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Servomex 1100A Instruction Manual

Oxygen analyser
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1100A / 1100H
Oxygen Analyser
Instruction Manual
Ref : 01100 / 002A / 17
Order as part No. 01100 002A

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Summary of Contents for Servomex 1100A

  • Page 1 1100A / 1100H Oxygen Analyser Instruction Manual Ref : 01100 / 002A / 17 Order as part No. 01100 002A...
  • Page 2 NOTES...
  • Page 3 SERVOMEX 1100A Oxygen Analyser This manual is for the following models. Control Unit Model 1101 from serial no: 181C Interface Unit Model 1102 from serial no: 11C Transducer Unit Model 1131 from serial no: 181C Transducer Unit Model 1132 from serial no: 01C Transducer Unit Model 1133 from serial no: 01C and software versions 01100 66X, 01100 67X, and 01100 68X where X is 0, 1, 2 or 3.
  • Page 4 USE OF WARNING, CAUTION AND NOTE This publication includes WARNING, CAUTION, and NOTE information where appropriate to point out safety related or other important information. WARNING - Hazards which will result in personal injury or death. CAUTION - Hazards which will result in equipment or property damage. NOTE - Alerts user to pertinent facts and conditions.
  • Page 5 HAZARDOUS APPLICATIONS The 1100A analyser has been certified by BASEEFA (The British Approvals Service for Electrical Equipment in Flammable Atmospheres) for use in hazardous areas and with flammable sample gases. Certain variants of the 1100A have been certified by Factory Mutual (USA), Eidgenossisches Starkstrominspectorat (Switzerland), CSA (Canada) and Japanese Ministry of Labour for use in hazardous applications.
  • Page 6 NOTES The 01100A GEN, EUR, UK2 and FM2 and the 01100H GEN and EUR comply with the European Community “Electromagnetic Compatibility Directive” 89/336/EEC by the application of the following: A Technical Construction File No. 01100-P-004-1 dated 27.11.95 and A Test Report No. 5044/981 issued by: ERA Technology Ltd, Cleeve Road, Leatherhead, Surrey, KT22 7SA The 01100A GEN and the 01100H GEN comply with the European Community “Low Voltage Directive”...
  • Page 7 INDEX Section 1 GENERAL DESCRIPTION Section 2 INSTALLATION OF ANALYSER Section 3 OPERATION Section 4 ROUTINE MAINTENANCE AND CALIBRATION Section 5 REPAIR Section 6 PARTS LISTS Section 7 APPENDICES Safety certification Ordering information Parameter listing Digital data communications Changing password Effect of background gases Software Specification...
  • Page 8 NOTES...

  • Page 9: Table Of Contents

    SECTION 1 : GENERAL DESCRIPTION LIST OF CONTENTS SECTION PAGE INTRODUCTION ............1.3 SAFETY APPROVALS .
  • Page 10 NOTES...

  • Page 11: Introduction

    INTRODUCTION This manual provides descriptive information, installation and maintenance instructions for the Servomex 1100A and 1100H Oxygen Analysers. Unless stated otherwise references to the 1100A include the 1100H. Comprehensive parts lists are included, also descriptive information covering optional plug-in modules and variants to the basic instrument which extend the range and capabilities.

  • Page 12: Safety Approvals

    Variants of the 1100A allow the two units to be separated by up to 100m, or up to 500 m (1600 ft) with the addition of an interface electronics unit, model 1102, (refer to Figure 1.1 and Section 1.4). Optional extras available include auto-calibration, alarm outputs, pressure compensation, digital output and sample conditioning systems.

  • Page 13: Analyser Configurations

    (01100918C or 01100918D, or earlier versions) are only supplied as a spare part complete with software. The ordering information for this is given in Section 6. ANALYSER CONFIGURATIONS The Servomex 1100 series oxygen analyser is available in several different configurations, identified by Feature 1 of the picture code. Feature 1...
  • Page 14 Feature 1 Separation Certification / Area Classification 04 (1100H) 100m maximum Transducer unit CENELEC Zone 1, Control unit Safe Area only 500m maximum Transducer CENELEC Zone 1, Interface and Control unit Safe Area only 500m maximum Transducer CSA Div1, Interface and Control unit CSA Div 2 500m maximum Transducer FM Div1, Interface and Control unit FM Div 2 06 (1100H) 500m maximum Transducer unit CENELEC Zone 1, Interface and Control unit.
  • Page 15 Figure 1.1 Analyser Architecture Configurations...

  • Page 16: Specification

    Pressure Compensation (Optional) 1.6.1.1 Measuring cell The 1100A oxygen analyser measures the paramagnetic susceptibility of the sample gas by means of a magneto- dynamic type measuring cell. The paramagnetic susceptibility of oxygen is significantly greater than that of other common gases.
  • Page 17 A single turn of fine platinum wire (the feedback coil) is secured in place around the dumb-bell. A rugged, taut band platinum ribbon suspension attached to the midpoint of the dumb-bell positions the dumb-bell in the strong non-uniform magnetic field existing between the specially shaped pole pieces of the permanent magnet structure.

  • Page 18: Control Unit

    1.6.1.2 Heaters and Temperature Sensor The transducer unit is temperature controlled. Heaters of type of construction 'N' (non-sparking) are fitted to the 1131 Transducer (Zone 2/Div 2) and of type 'd' (flameproof) construction to the 1132 and 1133 Transducer (Zone 1/Div 1). A platinum resistance thermometer senses the internal temperature of the transducer and transmits a signal to the amplifier board.
  • Page 19 1.6.2.3 Microprocessor Board 01100918C or 01100918D The microprocessor board controls all the functions within the system. It processes digital signals from the oxygen measuring circuit, temperature sensor and keypad to provide outputs to the digital display, isolated current output board, heater control and optional relay and data output modules.

  • Page 20: Interface Unit

    1.6.2.7 Power Supply Unit 01100968 The power supply unit generates +5V d.c., 0V and +/-8V d.c. supplies and also two isolated a.c. supplies for the analogue output and optional digital output board. An on/off signal is generated to provide the microprocessor with an indication of the state of the power supply unit.

  • Page 21: Data Output Board 01100927

    1.7.2 Data Output Board 01100927 A data output board may be fitted. The board uses an ASCII transmission code operating an asynchronous signal with a start bit, eight data bits and two stop bits at a transmission rate of 300 baud. Two types of output are available from the board.

  • Page 22: Auto-Calibration 01100936

    1.7.4 Auto-calibration 01100936 The analyser can be programmed to carry out an automatic calibration sequence. An optional relay board is fitted which has relays to drive three solenoid valves for controlling the zero, span and sample gases. The optional board comprises the relays only, it does not include the solenoid valves, these must be obtained by the user.

  • Page 23: Sampling Systems

    1162 Wet Gas System 1161 Dry Gas Sample System Figure 1.5 Sampling System Options 1.7.6 Sampling Systems See Figure 1.5. Two standard sampling systems are available: The 1161 for dry gases, comprises two flow meters fitted with needle valves to set bypass and sample flow rates and a filter with a replaceable element.

  • Page 24: Flow Alarm

    1.7.7 Flow Alarm A version of the 1161 dry gas sample panel is available fitted with a flow alarm. The signal from the alarm can be interfaced into the Control unit which will display an alarm if the sample flow through the cell falls below a predetermined level.
  • Page 25 SECTION 2 : INSTALLATION OF ANALYSER LIST OF CONTENTS SECTION PAGE SAFETY CONSIDERATIONS ..........2.3 2.1.1 General Safety Requirements .

  • Page 26: Section Page

    SECTION PAGE 2.12 FLOW ALARM ............2.37 2.13 TRANSDUCER UNIT DILUTION PURGE .

  • Page 27: Safety Considerations

    SECTION 2 INSTALLATION OF ANALYSER This section includes installation instructions for the various options, information for connecting the analyser units together and for the electrical and sample gas connections. Installation Overview Mounting of analyser - Section 2.3 Sample gas connections - Section 2.5 Electrical supply connections - Section 2.6 Transducer to Control unit interconnections (separated systems only) - Section 2.8.

  • Page 28: Pre-Installation Checks

    MOUNTING DETAILS 2.4.1 Close Coupled Configuration The close coupled variant of the 1100A is supplied with straps for surface mounting (Refer to Figure 2.1 for principal dimensions). 2.4.2 Separate Configuration The Transducer and Interface units are supplied with straps for surface mounting (Figure 2.2).
  • Page 29 Installation instructions for the three arrangements are as follows: Surface mounting using kit 01100 401 (Figure 2.2) Attach the two straps to the rear of the Control unit using the screws supplied. This unit can now be hung on any convenient vertical surface. Flush panel mounting using kit 01100 413 (Figure 2.3) Make a rectangular hole in the panel as shown in Figure 2.3.
  • Page 30 Figure 2.1 (a) Principal Dimensions Close Coupled Analyser or Transducer with Interface Unit Architecture Codes 01, 03, 21 and 23...
  • Page 31 Figure 2.1 (b) Principal Dimensions 1131 Transducer Unit Architecture Codes 02 and 22...
  • Page 32 Figure 2.1 (c) Principal Dimensions 1133 Transducer Unit Architecture Codes 04, 06, 14,16, 24 and 26...
  • Page 33 Figure 2.1(d) Principal Dimensions 1132 Transducer Unit Architecture Codes 04 and 06...
  • Page 34 Figure 2.2 Surface Mounting Control Unit Figure 2.3 Flush Panel Mounting (Control Unit Only) Figure 2.4 19" Rack Mounting (Control Unit Only) 2.10...

  • Page 35: Sample Gas Connections

    It is recommended that 'O' ring fittings are used for inlet and outlet connections. If a Servomex sampling system is not used then the sample requirements are: Inlet pressure 0.3kPa (50mm wg) maximum relative to vent pressure.
  • Page 36 Temperature: 1131 and 1133 50°C (122°F) maximum, transducers: 10°C (14°F) minimum at analyser inlet. 1132 transducer: 105°C (221°F) maximum, 10°C (14°F) minimum at analyser inlet. The sample must be dry and clean with a maximum particulate size of 3 micron. It will be necessary to regulate the sample pressure and flow to ensure stable operation and to prevent damage to the measuring cell.
  • Page 37 (a) 1131/1133 Transducers (b) 1132 Transducer Figure 2.5 Gas Connections to Transducer Units. (a) Dry Gas Samples (b) Wet Gas Samples Figure 2.6 Recommended Sample System Schematics 2.13...
  • Page 38 Figure 2.7(a) Connection of 1161 Dry Gas Sampling System 2.14...
  • Page 39 Figure 2.7(b) Connection of the 1162 Wet Gas Sampling System 2.15...

  • Page 40: 1131 And 1133 Transducers Gas Connections

    2.5.1 1131 and 1133 Transducers Gas Connections: If a Servomex type 1161 or 1162 sampling system has been supplied, this must be mounted beneath the transducer unit and connected as shown in Figure 2.7. The sample gas inlet connection to the sampling system is a Rp 1/4 (1/4 in.BSPP) fitting for the 1161 dry gas sampling system;...
  • Page 41 Figure 2.8 Electrical Connections 2.17...

  • Page 42: Voltage Selection

    If there is a possibility of the electrical supply carrying interference into the analyser then a filter should be fitted adjacent to the analyser. A suitable filter is available from Servomex, part number 01100 981 (BASEEFA and FM approved) or 01100 959 (CSA approved).

  • Page 43: Connection To Power Supplies

    The power supply unit is held in place by four screws, two located at the front and two at the rear of the assembly. Remove the two screws located in the front. Loosen the two screws located at the rear of the assembly. Slots in the power supply bracket allow the assembly to be manipulated and removed without removing the rear screws.

  • Page 44: Ground (Earth) Connections

    To connect the instrument to the electrical supply, proceed as follows: Note: to meet CE requirements for EMC it is necessary to fit the mains filter unit. (See section 2.14) Remove the instrument cover as described in Section 2.6.1(1). The terminals for connecting the instrument to the electrical supply are located at the front of the power supply unit (TB-A) and are protected by a plastic cover.

  • Page 45: Battery Back-Up

    BATTERY BACK-UP Analysers fitted with microprocessor board 01100918C or 01100918D and software version 0110068X (X = 1,2 or 3) do not need battery back-up of the memory. These analysers have serial number of the Control unit 1101/2301 and above and serial number of Interface unit 1102/201 and above.
  • Page 46 Cable requirements are:- Seven twisted pairs with an overall shield or screen with drain wire. In electrically noisy installations it may be necessary to shield each individual pair. For analysers without pressure compensation, five twisted pairs only are used. The recommended conductor size is 16/0.2mm (20 AWG), but others are acceptable provided the cross-sectional area of the conductor is within the range 0.5 to 1.5mm (20 to 16 AWG) and the loop resistance does not exceed 10 ohms.
  • Page 47 Capacitance and inductance or inductance to resistance (L/R) ratio must not exceed the following values: For O not exceeding 21% (CENELEC certification) Gas group Capacitance Inductance or L/R ratio : H/ohm 0.35 1.05 20.0 See certification details in Supplementary manual 01100 008A for conditions of use, in particular Certificate BAS No Ex 842393/2 (10 February 1988).
  • Page 48 Figure 2.8(a) Installation of Signal cable (FM Requirements) 2.24...

  • Page 49: Heater Cable

    2.8.1.4 C.S.A. Certification Requirements Capacitance and inductance or inductance to resistance (L/R) ratio for this cable must not exceed the following values: For O not exceeding 21% Gas group Capacitance Inductance or L/R ratio : H/ohm 0.35 1.05 20.0 Installation of this cable should conform to CSA STD. C22.2 No. 157 M1987: Clause 4.3.8.9. See certification details in Supplementary manual 01100 008A for conditions of use, in particular system wiring schematic 01100/898 CSA.

  • Page 50: Interface To Control Unit Interconnections

    INTERFACE TO CONTROL UNIT INTERCONNECTIONS The Interface and Control units have to be connected by a cable carrying digital signals. This is terminated in both units on the Data Output board (01100 927). Cable requirements are: Two twisted pairs with an overall shield or screen and drain wire. The recommended conductor size is 16/0.2 mm (20 AWG), but others are acceptable provided the cross-sectional area of the conductor is within the range 0.5 to 1.5mm...
  • Page 51 Figure 2.10a Connections to 1132 Transducer Unit Architecture Code 04 and 06 (1100H) Figure 2.10b Connections to 1133 Transducer Unit Architecture Codes 04, 14, 24, 06, 16 and 66 2.27...

  • Page 52: Cable Kit Options

    Figure 2.11 Interface to Control Unit Connections Figure 2.11 shows the connections between the Interface and Control units (analyser Codes 03, 23, 06, 16 and 26). See Section 2.11.2 if the 01100 927 boards have not already been fitted. 2.10 CABLE KIT OPTIONS A cable kit is available for the signal and heater cables.

  • Page 53: Output Connections

    WARNING The heater cable is unsuitable for use in hazardous areas without further protection. The kit includes four glands and sealing washers each for the heater cables and signal cables. The cable glands are constructed from brass Certified EEx 'd' IIC. If used in a hazardous area, the glands must be properly fitted to the analyser enclosures to ensure that the sealing is maintained to IP54 (NEMA 4).

  • Page 54: Analogue Output

    Glands should be used to protect the signal cables from chafing and to ensure the weatherproofing of the analyser. If the analyser is installed in a hazardous area these glands should have appropriate safety approvals and be fitted to maintain the IP54 (NEMA 4) protection.
  • Page 55 Figure 2.13 Analogue Output - Hazardous Area Applications With Output Board 01100929 The analogue output is certified intrinsically safe (ib) and, when the 1100A is used for hazardous applications, certification conditions place certain restrictions on the way the output may be connected. The certificates give full details (See Supplementary manual, part no.

  • Page 56: Digital Data Output

    2.11.2 Digital Data Output The data output board (01100 927) is fitted into the third position from the left in the module rack (Figure 2.12). This board requires a separate power supply which is taken from the flying lead that is secured to the module rack. Unfasten this lead and connect it to the terminal block as shown in Figure 2.14.
  • Page 57 Two outputs are available - 20mA current loop and RS 232C. Current Loop: To maintain EMC requirements, connection to TB-G must be made using a screened cable having two twisted pairs. The screen termination is made only at one end (generally at the 1102 Interface Unit in maximum separation configuration) and the terminating wire must be maintained as short as practical (less than 40mm).

  • Page 58: Alarm Relay Board

    2.11.3 Alarm Relay Board The alarm relay board (01100936) is normally installed in the Control unit in the first slot on the left hand side of the module rack (Figure 2.12) and its associated terminal block is fixed to the upper left hand side of the enclosure.
  • Page 59 Figure 2.15 shows suggested connections to solenoid valves. It is recommended that 3 off 2 way normally closed, electrically operated a.c. solenoid valves are used. The connections are: Relay (top) Sample Gas Zero Gas Span Gas No connection The logic is that when a given gas is flowing only the appropriate relay is energised while the remaining two are not.
  • Page 60 : F capacitors in series with 100 ohm resistors. They can be supplies, suitable ones are 0.047 obtained from Servomex under part no. 2692-0029. For dc supplies suppressing diodes are required. The cable must not be installed close to other equipment likely to generate severe levels of electromagnetic interference.
  • Page 61 They also open when the flow alarm unit loses electrical power. If the signal is to be used by the 1100A then connection is made to TB-C, terminals 1 and 4 on the 01100916A board. Remove and discard the shorting link on these terminals. This is in the Control unit (or Interface unit when this is used).
  • Page 62 2.14 EFFECT OF ELECTRICAL INTERFERENCE Good installation procedures should minimise the electrical interference to which the 1100A may be subjected. The analyser will work within specification with supply voltage reduced by 10% and has been tested not to malfunction at -15%. If the supply voltage drops by 20% to 30% of the nominal, this will be detected and the microprocessor will perform a restart.
  • Page 63 The 1100A hardware and software incorporates a number of features to protect against incorrect operation, but these cannot guarantee against malfunctioning in extreme environments.
  • Page 64 The Control and/or Interface unit may be purged to provide hazardous area safety. Figure 2.19 shows location of the purge connections. Servomex can supply an analyser complete with certified purge system. See manual 00480001A for complete installation and operating instructions.
  • Page 65 Figure 2.19 Purge Connections 2.41...
  • Page 66 NOTES 2.42...
  • Page 67 SECTION 3 : OPERATION LIST OF CONTENTS SECTION PAGE OPERATING PRINCIPLE ........... 3.3 PRE START CHECKS .
  • Page 68 SECTION PAGE ALARM RELAYS ............3.24 3.9.1 Allocation of Alarms of Relays .

  • Page 69: Operating Principle

    SECTION 3 OPERATION This section contains a detailed description of the full operating procedure of the 1100A analyser. Before operating the analyser it is advisable to check that the various services, sample and calibration gases are correctly connected and leak tight.

  • Page 70: Pre Start Checks

    Perform a leak test on both the Transducer unit and any sampling system fitted. Remove any packing material. If a Servomex sampling system is not supplied with the analyser check that the sample condition requirements are met. (See Section 2.5).

  • Page 71: Software Issue Number

    Flow rates with these gases will have to be set at a lower value. Highest accuracy from the analyser will be achieved if the cell flowrate is kept constant. Calibration gases should have the same flowrate as the sample gas. With 1162 Wet Gas Sampling System Fill the bubbler bowl with water, using the filling port on the top plate, until it has reached the level of the drain hole.

  • Page 72: Use Of The Keypad

    Transducer temperature may be checked by displaying parameter 17 (Refer to section 3.5.1). Each time the analyser is switched on a self-check routine will be initiated. This routine will produce various indications on the front panel display as follows:- Random numbers will show and the buzzer will sound. The Software Issue Number will be displayed.
  • Page 73 Figure 3.1(a) Keypad layout up to S/N 1101/5199...
  • Page 74 Figure 3.1 (b) Keypad layout from S/N 1101/5200...
  • Page 75 Figure 3.2 Keypad Functions...

  • Page 76: Display Mode

    3.5.1 Display Mode If software with customised default values is fitted then the values shown in the examples below may differ. To display the Lo Lo alarm level press DISPLAY ALARM Lo Lo The display will show -10.00 40 -10.00% is the alarm setting and 40 is the parameter number. To display the span of the analogue output press DISPLAY RANGE...

  • Page 77: Operator Mode

    3.5.2 Operator Mode This is used to change information and values. It is accessed via a password. As the analyser is supplied the password is: ENTER The SET and ENTER keys are only used in the OPERATOR mode. For example to change the Lo Lo alarm setting to 5%: First enter the password ENTER The display will change to...

  • Page 78: Calibration

    Once the analyser is in the OPERATOR mode it is not necessary to re-enter the password between operations. To change the password see Appendix 5. CALIBRATION There are no electrical adjustments for calibration, the microprocessor performs all the calibration functions. If the auto-calibration option is fitted the analyser should be initially calibrated manually to ensure its correct operation.

  • Page 79: Zero Calibration

    To enter the span gas oxygen content, press SPAN ENTER Span gas oxygen content parameter Oxygen value The display should show 20.95 98 is the parameter number for the oxygen content of the span gas. Once the oxygen contents have been entered they are stored and do not have to be re-entered unless the gases are changed or the microprocessor memory is lost because of battery failure.

  • Page 80: Span Calibration

    77 is the parameter number for zero calibration, 0.01 is a status message which indicates a successful zero calibration. Other values indicate an error and the zero has not been calibrated. See Table 3.1 for a listing of manual calibration error messages. Note: With 0110066X software, performing a zero calibration loses the previous span calibration.

  • Page 81: Calibration Limits

    3.6.3 Calibration Limits There are built in limits for both the zero and span calibration points. If the oxygen signal exceeds these the analyser will not calibrate. This has been done to prevent the analyser being calibrated when: The mechanical zero is a long way out of adjustment. There is a fault in the optical feed-back system of the cell which prevents a correct span reading.
  • Page 82 TABLE 3.1 CALIBRATION FAILURE DISPLAYS DISPLAY DESCRIPTION 0.01 Zero calibration successful 0.02 Zero calibration unsuccessful due to the zero gas being outside the limits. 10.01 77* Both Zero and Span successfully calibrated. 100.01 77* Refer to 0.02 78 0.06 Unable to perform a manual calibration because analyser is in the auto-calibration mode.

  • Page 83: Calibration Failure

    If a span calibration cannot be achieved it can be due to a change in barometric pressure due to altitude or climatic effects. The 1100A is set for a barometric pressure of approximately 1000mbar. It may also be due to the measuring cell being replaced with one of a different sensitivity, see Section 5.3.6.10 for details on changing the sensitivity.

  • Page 84: Zero Offset

    For example to change the span to 2.5%. Enter the password then press RANGE SPAN ENTER Output span Span value parameter The display should show 2.50 18 is the parameter number for the analogue output span. 3.7.2 Zero Offset The zero offset of the analogue output can be set to any value from -10.00 to +99.99%. When the analyser is supplied the offset is set to 0.00%.

  • Page 85: Select 4-20Ma, 0-20Ma, 20-4Ma Or 20-0Ma

    3.7.3 Select 4-20mA, 0-20mA, 20-4mA or 20-0mA As the analyser is supplied the analogue output is set to give 4-20 mA. It can be set to 0-20 mA by using parameter 13 and setting it to zero. Press: Hi Hi ENTER It can be set to 4-20mA by setting parameter 13 to 4.

  • Page 86: Alarms

    ALARMS 3.8.1 Alarm Functions Sixteen alarm functions are available and listed in Table 3.2. TABLE 3.2 ALARM FUNCTIONS Alarm/Diagnostic Parameter Default Code Value Oxygen low-low -10.00% Oxygen low -10.00% Oxygen high 150.00% Oxygen high-high 150.00% Current output frozen Analyser in auto-calibration Range change Data-link between Interface and Control Units broken.

  • Page 87: Oxygen Level Alarms

    Enter the password and press ENTER Return to the oxygen mode: SAMPLE ENTER The display will then show the oxygen value alternating with the parameter number of the alarm(s) which are active. As the alarms are cleared the relevant parameter numbers will be cleared from the display until with no alarms the oxygen reading is shown continuously.

  • Page 88: Sample Flow Alarm

    3.8.4 Sample Flow Alarm This is only available if the optional sample flow alarm is fitted. It is parameter number 65. No action on this alarm is possible via the keyboard. It is self clearing when the sample flow through the cell returns to within its normal limits.

  • Page 89: Data-Link Broken

    Software 0110068X If this software is fitted to microprocessor board 01100918B, 01100918C or 01100918D, the alarm can be cleared either by switching the analyser 'on' and 'off' or by entering the password and setting parameter 67 to zero by pressing: ZERO ENTER Software 01100651, 01100652, 0110066X and 0110067X...

  • Page 90: Range Change Alarm

    To erase the store, enter the password and set parameter 95 to zero by pressing: SAMPLE ENTER 3.8.10 Range Change Alarm This alarm indicates any change in the setting of the analogue output. It is parameter number 61. Changing the following will cause the alarm to go active:- Output range - parameter no.

  • Page 91: Displaying Allocation Of Alarms

    Enter the password and press: SAMPLE ENTER Parameter no. of Decimal Parameter no. of third relay Point alarm Note the decimal point which has to precede the parameter number of the alarms. To allocate another alarm to the same relay, repeat the above but with the new alarm parameter number.
  • Page 92 Figure 3.3 Auto-calibration Response Curve 3.26...
  • Page 93 Note: For auto-calibration to operate the oxygen content of the Span gas must be at least 10% greater than the oxygen content of the Zero gas. The oxygen signal during the auto-calibration sequence is shown in Figure 3.3. At the start of auto-calibration the analyser measures and stores the oxygen content of the sample gas.

  • Page 94: Automatic Calibration Initiation

    3.10.2 Automatic Calibration Initiation Auto-calibration may be initiated either on demand, at fixed timer intervals or by momentary closure of an external contact. Enter the password before commencing. 3.10.2.1 On Demand This sequence uses parameter code 46 and is initiated by pressing ENTER The analyser will perform an auto-calibration sequence.

  • Page 95: Initial Programming

    3.10.3 Initial Programming To set up auto-calibration initially the following parameters will need to be adjusted to tune the analyser to the sampling system and to ensure that failure modes are detected. Code Function Range Default value Zero to Span DV lag 0-163.00secs 90.00 Zero to Span 90% response...

  • Page 96: Accuracy

    Similarly, the span stabilisation time aborts the auto-calibration if a stable calibration point is not reached. This could be because of a failure in the sampling system or a malfunction of the analyser. 3.10.4 Accuracy The accuracy from this system will be within approximately 0.02 - 0.03% oxygen, for both the zero and span gas calibrations.

  • Page 97: Failure To Auto-Calibrate

    TABLE 3.3 CALIBRATION STATUS INDICATION DISPLAY DESCRIPTION 0.01 46 Initialising auto-cal. 0.02 46 Zero gas flowing and 3% point being searched for. 0.03 46 Span gas on and DV lag being measured. 0.04 46 Span gas 90% point being measured. 0.05 46 Stabilisation period, plateau being measured.
  • Page 98 90% response too long. Stabilisation period too long. Span gas within 5% O of zero gas (10% with software versions 0110066X, 0110067X and 010068X Rev 0). Best accuracy will be obtained if the span gas is at least 10% greater than the zero gas. If the analyser has failed to auto-calibrate then alarm codes 63, 64 or 66 will be shown and the value of parameter no.

  • Page 99: Auto Calibration Alarms

    When an auto-cal is initiated the values of these parameters are set to zero. As auto-cal progresses the values are updated. If auto-cal fails because a response time was exceeded then all subsequent values will still be set at zero. The test at which it failed will have the appropriate maximum value, as set by the user in codes 49 - 57, in it.

  • Page 100: Oxygen Level Alarms In Auto-Calibration

    There has to be a means of putting a back pressure on the analyser. The most convenient way to do this is to use the back pressure valve supplied by Servomex. This is designed to be placed on the bypass of the 1161 sampling system and will give the correct back pressure when the bypass flow is 4 to 6 litres/min.

  • Page 101: Pressure Compensation Calibration Initiation

    The pressure compensation calibration sequence measures the oxygen level; initially at atmospheric pressure and then increased by 5% to 10% above atmosphere. From the resulting values the microprocessor calculates a calibration constant which then applies to all other oxygen readings. Since the pressure transducer is very stable, calibration will normally only be necessary at monthly intervals.
  • Page 102 The display should show 0.02 The microprocessor has measured and stored the first pair of oxygen and pressure readings. Display the measured oxygen reading. Press: SAMPLE ENTER Display should show: 100.00 (±0.02%) Increase the pressure in the measuring cell by closing the back pressure hand valve on the vent of the system.
  • Page 103 Display should show 100.00 (±0.02%) This is now the compensated oxygen reading. Recalibrate the span point. After calibration the pressure compensation can be checked by performing the following tests. Allow the oxygen reading to stabilise after each adjustment which takes about 30 seconds. Bypass flow Sample flow Back pressure...

  • Page 104: Pressure Compensation Calibration Error

    3.11.2 Pressure Compensation Calibration Error The following error indications listed below in Table 3.5 will be displayed during a pressure compensation calibration. TABLE 3.5 PRESSURE COMPENSATION ERROR INDICATIONS DISPLAY DESCRIPTION 0.01 70 Pressure compensation calibration completed. New correction being used. 0.02 70 First stage completed, back pressure to be applied.
  • Page 105 Enter the password and press: VALVE SPAN ENTER Will open the span gas valve and ensure the other two valves are closed. The display will show: 0.01 88 is the parameter number for the sample gas valve. 0.01 indicates that it is open. If it was closed 0.88 would be shown.
  • Page 106 NOTES 3.40...
  • Page 107 SECTION 4 : ROUTINE MAINTENANCE AND CALIBRATION LIST OF CONTENTS SECTION PAGE ROUTINE MAINTENANCE AND CALIBRATION ....... . 4.3 4.1.1 Daily .
  • Page 108 NOTES...

  • Page 109: Routine Maintenance And Calibration

    SECTION 4. ROUTINE MAINTENANCE AND CALIBRATION Note: Maintenance of the analyser should be done by qualified personnel who are familiar with good workshop practice. GENERAL Routine maintenance is limited to checking calibration, inspecting the sampling system and changing the memory back-up batteries. The following maintenance instructions are suggested as a guide to the procedure and time intervals.
  • Page 110 The oxygen content of the Span gas should be at least 5% O greater than the oxygen content of the Zero gas. Instrument quality air may be used as the span calibration gas. Alternatively, dry air from a cylinder, or clean, dust free atmospheric air may be used, provided it is dried. For the best accuracy, the span gas should be at least 10% O greater than the oxygen content of the zero gas.

  • Page 111: Mechanical Zero Adjustment

    MECHANICAL ZERO ADJUSTMENT Section 3.6 gives details of how to calibrate the analyser. If the zero point of the analyser cannot be calibrated then the mechanical zero will require adjustment. There are two adjustments possible, fine and coarse. The coarse adjustment is done as part of the cell replacement procedure and is described in Section 5.3.3.

  • Page 112: Sampling System Maintenance

    SAMPLING SYSTEM MAINTENANCE If a Servomex sampling system 1161 or 1162 is used refer to Section 5.4. BATTERY REPLACEMENT This is only required on earlier analysers Batteries are located in the Control unit except for maximum separation systems when they are in the Interface unit.

  • Page 113: Loop Gain

    Remove the battery housing located on the underside of the card frame by removing the screw. Remove the batteries from the clips and replace. Battery Specification: Size - AA Type - Alkaline non rechargeable Voltage - 1.5 V Quantity - 3 Observe polarity Replace the Battery housing.
  • Page 114 Note that when a loop gain check is carried out the oxygen signal is decreased by the value of the loop gain. This decrease lasts for about 1 second. There is a possibility that a low oxygen alarm might be triggered by this test. See Table 4.1 for loop gain status codes.
  • Page 115 SECTION 5 : FAULT FINDING AND REPAIR LIST OF CONTENTS SECTION PAGE DIAGNOSTIC FLOW CHARTS ..........5.4 5.1.1 Initialisation of Tests (Restart) .
  • Page 116 NOTES...
  • Page 117 NOTE: Repair of the analyser should be done by qualified personnel who are familiar with good workshop practice and the requirements for repairing certified equipment. Any spare parts which are used should be as specified by Servomex. ELECTRICAL SAFETY WARNING The electrical power in this equipment is at a voltage high enough to endanger life.

  • Page 118: Diagnostic Flow Charts

    Section 5.3 Detailed repair procedures. Section 5.4 Servicing procedures for Servomex sampling systems. DIAGNOSTIC FLOW CHARTS The purpose of these diagnostic flow charts is to assist in locating analyser faults. They cannot include every potential fault but they will enable the identification of a sub-assembly which requires replacement.
  • Page 119 Diagnostic Flow Chart 1...
  • Page 120 Diagnostic Flow Chart 2...
  • Page 121 Diagnostic Flow Chart 3...
  • Page 122 Diagnostic Flow Chart 4...
  • Page 123 Diagnostic Flow Chart 5...
  • Page 124 Diagnostic Flow Chart 6 5.10...
  • Page 125 Diagnostic Flow Chart 7 5.11...
  • Page 126 Diagnostic Flow Chart 8 5.12...
  • Page 127 Diagnostic Flow Chart 9 5.13...
  • Page 128 Diagnostic Flow Chart 10 5.14...
  • Page 129 Diagnostic Flow Chart 11 5.15...
  • Page 130 Diagnostic Flow Chart 12 5.16...
  • Page 131 Diagnostic Flow Chart 13 5.17...
  • Page 132 Diagnostic Flow Chart 14 5.18...

  • Page 133: Diagnostic Tests

    DIAGNOSTIC TESTS The function of these tests is to isolate faults at a lower level than major sub-assemblies. 5.2.1 Oxygen Transducer The following series of tests assumes that the transducer unit is connected to a close coupled control/interface unit in which a 01100925B amplifier board is fitted. In systems in which the transducer is separated from the control/interface unit, refer to circuit diagrams in Figures 2.9 or 2.10 (depending upon Transducer unit fitted) for connection details.
  • Page 134 Step Procedure Normal Corrective Indication Action Pass the air as span gas through the transducer at a sample rate of 100 to 200 ml/min. Output from the photo-cells should e.g.: N Replace increase. Air (21% O oxygen 280mV measuring cell. See section 5.3.2.1.

  • Page 135: Power Supply Unit Test

    TABLE 5.1 RESISTANCE THERMOMETER VALUES Resistance in ohms across sensor Temperature in degC (blue and brown wires) 100.0 103.9 107.8 111.7 115.5 119.4 123.2 127.0 130.9 134.7 138.5 142.3 146.1 149.8 5.2.2 Power Supply Unit Test Remove PSU from analyser. See Section 2.6.1, paras 1 to 3. With PSU still connected to analyser measure the following voltages on TB-B (terminal block on right hand side of PSU with analyser connections).
  • Page 136 If the +5V is low and no current is being drawn, check the voltage regulator. If either of the +8v or -8V supplies are low then replace the pcb 01100919. See Section 5.3.6.1. 5.2.2.1 Transformer Test Note: Disconnect electrical supply to PSU when making connections/disconnections in the following test.

  • Page 137: Heater Resistance

    5.2.2.3 Heater Control Circuit Tests Remove the power supply unit from the analyser (See 2.6.1 Paragraphs 1 to 3). Remove connector from TB-B. Connect a load to simulate the heater resistance (see Table 5.2) or reconnect the heaters. Connect an ammeter in series with the heaters and measure the current flowing. The current should be less than 5mA.

  • Page 138: Keyboard Encoder Test

    TABLE 5.2 HEATER RESISTANCE Transducer Terminal Heater Heater Heater Model Number Voltage Resistance Current PSU TB-A (ohms) (approx.) 1131A 110V 560+5% 200mA 1131B 120+5% 450mA 1131C 120+5% 450mA 1132/701 110V 201+10% 550mA 1132/000 220V 814+10% 270mA 1133 96+10% 570mA Note: Heater voltage measured relative to TB-A-4. See Section 5.3.5 for details on the replacement of the heater elements in the Transducer units.
  • Page 139 Figure 5.0 Rear view (solder side) of Display Board 01101902 showing location of test points on IC5 5.25...

  • Page 140: Repair

    TABLE 5.4 KEYBOARD TEST IC5 Pin No. DISPLAY CLEAR ENTER If this test is unsatisfactory it indicates the front panel assembly should be replaced. REPAIR 5.3.1 Repair Equipment and Tools The following equipment and tools should be available to personnel responsible for maintenance and repair of the analyser.

  • Page 141: Servicing The Magnet Assembly Of 1131, 1132 And 1133

    - Soldering Iron 25W. - De-solder braid or vacuum de-soldering tool. - Open ended spanner, width across flats 0.28 in (9/32in) British 3BA, non-magnetic (only for 312 and 313 cells). - Open ended spanner, width across flats 0.45 in (7/16in) British 3/16 Whit nominal, non-magnetic.
  • Page 142 Lift the magnet assembly (3) carefully, easing it past the gas connections and then resting it in the case. To replace magnet assembly: Refit magnet assembly (3) onto the 3 x M6 studs and re-tighten the nuts (20). Fit sample tubes (15) and (16) to the measuring cell (8) using two new 'O' rings. Tighten the connectors not more than three flats beyond finger tight.
  • Page 143 Solder wires to measuring cell. Do not overheat the terminals as this could cause a leak. The black sleeved wire goes to the terminal pin adjacent to the black spot and the yellow sleeved wire goes to the terminal pin adjacent to the yellow spot. Refit magnet frame.
  • Page 144 Solder the blue wire to the upper pin and the black wire to the lower pin. Care must be taken not to overheat the pins. See Figure 5.1. Carefully slide photocells into zero assembly and lock in mid-position with the M4 screw. Replace magnet assembly.
  • Page 145 Undo the fittings to enable the transducer to be separated from the sampling panel and remove the heat transfer chimney by undoing the 4 M4 nuts. Remove the cover of the right hand junction box and disconnect the signal and earth wires from the terminal block.
  • Page 146 Test complete transducer unit for leaks. See Section 5.3.4. Note: Do not attempt to clean the internal parts of the cell. The dumbell and suspension are delicate and are easily damaged. Cells damaged in this way will not be covered by the Servomex guarantee. 5.32...

  • Page 147: Setting Mechanical Zero

    5.3.3 Setting Mechanical Zero See Figure 6.2. Power up the analyser Pass a zero gas (e.g. Nitrogen) though at a sample rate of 100-200 ml/min (150 ml/min max for 313 and 324 cells). Turn the zero screw (9) anticlockwise until the photo cell assembly (24) reaches limit, then turn the screw clockwise to the limit, counting the number of turns (between 4 and 6).

  • Page 148: Replacement Of Heaters And Thermal Fuse

    5.3.5 Replacement of Heaters and Thermal Fuse 5.3.5.1 1132 and 1133 Transducers. See Figure 5.4. Remove Cover of junction box on left hand side of the transducer by removing 4 x M6 socket head screws. (5mm A/F allen key). Remove split pin (1). Remove Heater wires from terminal block (2).
  • Page 149 Lift out the complete transducer inner box assembly. To change the thermal fuse (1132 transducer only): The thermal fuse is located on top of the inner box assembly. Remove the two wire connections from the thermal fuse assembly. Undo fixing screw and remove the complete thermal fuse assembly. Install a new thermal fuse assembly (01131355) by screwing it to the top of the inner box and reconnecting the two wires (push-on-fitting).

  • Page 150: Repair Of Control/Interface Unit

    5.3.6 Repair of Control / Interface Unit See Figure 6.1 for location of boards and assemblies. All boards in the card rack are removed by: Removing the 4 x M6 socket head screws (5mm Allen Key) securing the front cover. Loosening the two screws holding the PCB locking bar and sliding the bar to the right.
  • Page 151 5.3.6.2 Replacement of Display Board. (The Display Board is not fitted to an interface unit.) Remove the front cover of the Control Unit. Unplug the two ‘IDC’ connectors, one from the base of the display board (13), the other from microprocessor board (PCB 1). Unscrew and remove slot head screws holding the printed circuit board to the front cover If required, the display elements (14) can be replaced as necessary.
  • Page 152 Pull out board (PCB 1) from unit. Plug in replacement microprocessor board (see Figure 1.1 for correct board) into right hand slot. Plug in IDC connector. Reconnect TB-H. (Observe polarity, top terminal is negative.) 5.3.6.5 Replacement of Analogue to Digital Converter Unplug IDC Connector.
  • Page 153 Connect yellow and black wires into TB-F. Black wire to centre connector. Yellow wires to outer connectors marked ‘26V’. Remake output connections. Observe polarity. To select 4-20mA or 0-20mA see section 3.7.3. 5.3.6.8 Replacement of Data Output Board Pull out board (PCB5) from unit. Disconnect violet and green wires from TB ‘M’.

  • Page 154: Sampling System Repair

    - On amplifier boards 01100925 and 01100925A adjustments are made by changing the value of resistor R41. Use only the special resistors supplied by Servomex, part numbers as follows: 5K ohm 2621-1989 2.5K ohm 2621-1996 In extreme cases it may be necessary to fit two resistors in parallel.
  • Page 155 Push the top insert (3) up to the stop while holding the bottom insert (4) down. Tilt the tube forwards until the lower end it clear of the bottom insert (4) and with draw tube. Inserts (3) and (4) can now be lifted out. Clean the tubes by washing them thoroughly with a volatile solvent or with soap and water.

  • Page 156: Wet Gas Sampling System 1162

    5.4.2 Wet Gas Sampling System 1162 5.4.2.1 Disassembly and Cleaning See Figure 6.9. Turn off gas supplies to analyser Drain water out of bubbler tube by unscrewing and removing drain plug. Disconnect vent/drain pipe if fitted. Open door (2) by turning Dzus fastener (12) and remove door. Unscrew and remove 2 X M6 slot head screws in base (4) Unscrew and remove 1/4 BSP locknut (28) and collar (7) while holding bubbler base.

  • Page 157: Figures And Circuit Diagrams

    FIGURES AND CIRCUIT DIAGRAMS Figure 5.1 Positioning and Wiring Of Measuring Cell 5.43...
  • Page 158 Figure 5.2 Wiring Connections to Magnet Assembly Figure 5.3 Connections to Optional Pressure Transducer 5.44...
  • Page 159 Figure 5.4 Heater Assembly 1132 and 1133 Transducers Configuration Codes 01, 03, 21 and 23 Figure 5.5 Wiring Connections between Transducer and Control / Interface Unit 5.45...
  • Page 160 Figure 5.6 Power Supply Board 01100919 Figure 5.7 Flowmeter Assembly 5.46...
  • Page 161 Note Model A,B,C refers to the variant of power supply, not to the model A,B,C, of the Transducer Unit. Figure 5.8 Power Supply Unit 01100919 5.47...
  • Page 162 Figure 5.9 A to D Converter Board 01100916 5.48...
  • Page 163 NOTES 5.49...
  • Page 164 Figure 5.10 A to D Converter Board 01100916A 5.50...
  • Page 165 Figure 5.10 A to D Converter Board 01100916A 5.51...
  • Page 166 Figure 5.11 Data Communications Board 01100927 5.52...
  • Page 167 Figure 5.12 Current Output Board 01100929 5.53...
  • Page 168 Figure 5.13 Current Output Board 01100939 5.54...
  • Page 169 Figure 5.14 Amplifier Board 01100925B 5.55...
  • Page 170 Figure 5.15 Relay Board 01100936 5.56...
  • Page 171 SECTION 6 : PARTS LISTS LIST OF CONTENTS SECTION PAGE RECOMMENDED SPARES LIST ..........6.3 6.1.1 Control Unit 1101 or Interface Unit 1102 .
  • Page 172 NOTES...

  • Page 173: Recommended Spares List

    (8XXXXX) which appears when the instrument is switched on must also be quoted. Spare parts may be obtained from Servomex at one of the addresses on the back cover of this manual or from local agents. RECOMMENDED SPARES LIST The following is a guide.

  • Page 174: Control Unit 1101 Or Interface Unit 1102

    Control Unit 1101 or Interface Unit 1102 Analyser code Control unit Interface unit See Section 1.4 board board 01 and 21 (1100A) 01100971 02 and 22 (1100A) 01100971 03 and 23 (1100A) 01100970 01100971 04, 14 and 24 (1100A) 01100973...

  • Page 175: Transducer Unit 1132

    6.1.3 Transducer Unit 1132 Recommended Qty Description Part No No. of Analysers Photocells 4931-7174 LED assembly 01191907 Measuring cell 00364000 Temperature sensor 01100999 Seals kit (enclosure ports only) S1132990 Cell connection kit 01132982 Heater cartridge (240V) 01191914 or Heater cartridge (110V) 01191917 Heat transfer assy.

  • Page 176: Dry Gas Sampling System 01161000 Or 01161710

    6.1.5 Dry Gas Sampling System 01161000 or 01161710 Recommended Qty Description Part No No. of Analysers Sample flow tube and float 5981-3871 Bypass flow tube and float 5981-3888 O-Ring kit (Viton) 01161999 Filter element 2377-3608 6.1.6 Wet Gas Sampling System 01162000 Recommended Qty Description Part No...
  • Page 177 NOTES...

  • Page 178: Control And Interface Unit Parts List 1101 And 1102

    CONTROL AND INTERFACE UNIT PARTS LIST 1101 AND 1102 Refer to figure 6.1 Item Description Part No PCB 1 Microprocessor board (See $ below) S1100918C or S1100918D PCB 2 Analogue to digital convertor ** S1100916A PCB 3 Amplifier board ** S1100925B PCB 4 Current output board (general) *...
  • Page 179 Figure 6.1 Control and Interface Unit - Exploded View (Note: No Keypad is fitted to the interface unit)
  • Page 180 NOTES 6.10...

  • Page 181: Transducer Units Parts List

    6.3 TRANSDUCER UNITS PARTS LIST See Figures 6.2, 6.3, 6.4 and 6.5. Item Description 1131 1132 1133 Inner Box - Front Assembly 01131913 01191909 01131913 Magnet Frame Assembly S1131901 S1191911 01131931 Inner Box - Rear Assembly 01131914 01132924 01133905 Thermistor 2651-6330 2651-6330 2651-6330...
  • Page 182 Figure 6.2 Zero Assembly and Magnet Frame 6.12...
  • Page 183 6.13...
  • Page 184 Figure 6.3 Transducer unit (1131) - Exploded View 6.14...
  • Page 185 Figure 6.4 Transducer Unit (1132) - Exploded View Figure 6.5 Transducer Unit (1133) - Exploded View 6.15...

  • Page 186: Dry Gas Sampling Systems Parts Lists

    6.4 DRY GAS SAMPLING SYSTEMS PARTS LISTS 6.4.1 Model 01161000 Item Description Part No Chassis flowmeter mounting 01161415 Tube - sample flowmeter in 01161414 Cell Outlet Tube 01161902 Cell Inlet Tube 01161903 Assembly - Filter block 01161904 Connector nut, stainless steel 00022472 Mounting bracket 01161416...
  • Page 187 Figure 6.6 Dry Gas Sampling System 01161000 6.17...

  • Page 188: Filter Block 01161904

    6.4.2 Filter block 01161904 Item Description Part No O-Ring BS112 Viton A 2323-6019 O-Ring BS006 Viton A 5981-0593 Filter Element 2377-3608 Seal Washer PTFE 3/4" 1/D 2321-1012 * A complete set of seals for the 1161 dry gas sampling system is available, with part no 01161999 (Viton) or 01161998 (EPDM).

  • Page 189: Flowmeter Seals Kits

    6.4.3 Flowmeter Seals Kits Complete Sampling System Kit 01161999 (Viton) or 01161998 (EPDM). Item Manufacturer Techniquip (year 2000 on) Platon or MPB BS006/BS011* BS006/BS011* BS013 BS014 BS611 BS4518 51-16 * denotes either type fitted depending upon bypass or sample flowmeter. Also see appropriate spares instruction sheet 01161/998SP or 01161/999SP.

  • Page 190: Wet Gas Sampling System Parts Lists

    WET GAS SAMPLING SYSTEM PARTS LISTS 6.5.1 Model 01162000 Item Description Part No Support Bracket 01162412 Door 01152413 Bubbler - top 01162414 Bubbler - base 01162415 Modified Stud Coupling 01162421 Mounting Bracket 01162417 Collar - bubbler 00542425 Drain - bubbler 00542435 Lock Nut 1/4"...
  • Page 191 Figure 6.9 Wet Gas Sampling System Assembly 1162 6.21...

  • Page 192: Filter Block 01162901

    6.5.2 Filter Block 01162901 Item Description Part No Seal Washer PTFE 3/4" I/D 2321-1012 O-Ring BS006 PTFE 2323-1014 O-Ring BS112 Viton A 2323-6019 Filter element 2377-3608 Cartridge valve 2372-0572 * A complete set of O-Rings and seals for the 1162 wet gas sampling system is available with part number 01162998 (Viton) and 01162999 (EPDM).

  • Page 193: Pressure Compensation Kit 01100997B

    PRESSURE COMPENSATION KIT S1100997B Item Description Part No Pressure transducer assembly 01100991B O-Ring BS113 Viton A 2323-6057 INTERCHANGEABILITY OF BOARDS AND SOFTWARE The following Table lists the part numbers of older printed circuit boards and the equivalent new part numbers. Fitting of the specified boards will not invalidate any safety approvals. TABLE 6.1 EQUIVALENT PRINTED CIRCUIT BOARDS Board Type Previous...
  • Page 194 TABLE 6.2 SOFTWARE COMPATIBILITY WITH MICROPROCESSOR BOARDS Microprocessor board Software 01100915 01100918 S1100918A S1100918B issue S1100918C S1100918D 01100923 01100651 0110066X 0110067X 0110068X X represents 0, 1, 2 or 3. Note: 12 bit resolution on the 4 to 20mA analogue output will only be obtained if software 0110067X or 0110068X with microprocessor board 01100918A, 01100918B, 01100918C or 01100918D and output board 01100929A or 01100939 are fitted.
  • Page 195 1100A ........
  • Page 196 NOTES...

  • Page 197: Safety Certification

    Appendix 1 SAFETY CERTIFICATION A1.1...

  • Page 198: British Standards

    APPENDIX 1. SAFETY CERTIFICATION The 1100A and 1100H analysers have been approved by various authorities for installation in hazardous areas. The certification offered with a specific analyser will depend upon specification and country of delivery. See the certification labels attached to the analyser for exact approval details.

  • Page 199: Cenelec Standards

    CENELEC STANDARDS Control and Interface units (1101 and 1102) Code: [EEx ia] IIC EN50 014 (1977) EN50 020 (1977) Certificate No. Ex 84B2391X Transducer unit (1132 and 1133) Code: EEx ia d IIC T3 (Tamb = 50 deg C) EN50 014 (1977) EN50 018 (1977) EN50 020 (1977) Certificate No.

  • Page 200: Swiss Approvals

    The Ministry of Labour have approved the 1133 Transducer unit for Division 1 application. Certificate No. 39568. CANADIAN (CSA) APPROVALS C.S.A have approved the 1100A (architecture codes 14 and 16) to the following standards: C22.2 No 0-M C22.2 No 0.4-M C22.2 No 94...

  • Page 201: Ordering Information

    Appendix 2 ORDERING INFORMATION A2.1...
  • Page 202 A2.2...
  • Page 203 A2.3...
  • Page 204 NOTES A2.4...

  • Page 205: Parameter Listing

    Appendix 3 PARAMETER LISTING A3.1...
  • Page 206 Parameter Equivalent Defaults/ Unit Customer Description Enterable Range Recommended Code No. Entry Start-Up Entered of Values Range Value Value Asymptote secs Time delay between checks during stabilisation time 2 to 100.00 5.0 to 20.0 Timer 11‡ Range Lo 0.00 Analogue output - zero offset -10 to 149.00 0.00 to +99.00 Range Hi...
  • Page 207 Parameter Equivalent Defaults/ Unit Customer Description Enterable Range Recommended Code No. Entry Start-Up Entered of Values Range Value Value Alarm Lo Lo -10.00 Lo Lo oxygen alarm level -10.00 to 163.80 -10.00 to 100.00 Alarm Lo -10.00 Lo oxygen alarm level -10.00 to 163.80 -10.00 to 100.00 Alarm Hi...
  • Page 208 Parameter Equivalent Defaults/ Unit Customer Description Enterable Range Recommended Code No. Entry Start-Up Entered of Values Range Value Value 0.00 Corrupt memory 0.68 Loop gain check request - set to zero to initiate test 0 to initiate test 0.00 Loop gain error Cal 0 0.08 or 0.70 Calibrate pressure compensation (if fitted).
  • Page 209 Appendix 4 DIGITAL DATA COMMUNICATIONS 01100 927 A4.1...
  • Page 210 APPENDIX 4 DIGITAL DATA COMMUNICATIONS - 01100927 Installation and electrical details are given in Section 2.11.2. This Appendix gives information for the interpretation of the digital output. Serial transmission code: ASCII Protocol: Asynchronous signal with a start bit, eight data bits and two stop bits.
  • Page 211 Characters 22-25 - Status of the 16 alarm functions. Character 26 Space. Characters 27, 28 - Checksum. Used internally by the 1100A. Character 29 Carriage return. Character 30 Line feed. Consecutive data frames are output without a break, ie the start character immediately follows the line feed of the previous data frame.
  • Page 212 This enables two digit decimal numbers to be output as a single character hexadecimal number. Decimal to hexadecimal conversion: Decimal Hexadecimal Decimal Hexadecimal e.g. With 01100 67X and 01100 68X software; if alarm parameters 93 and 92 are active, their sum of equivalent decimal numbers is 8 + 4 = 12.

  • Page 213: Changing The Password

    Appendix 5 CHANGING THE PASSWORD A5.1...
  • Page 214 APPENDIX 5. CHANGING THE PASSWORD The password is factory set to: Enter but can be altered by entering into the system a pre-calculated number which relates to the new password. Any three digits, from zero to nine, can be used as the password. A value, calculated from these digits is entered into codes 71 and 72.
  • Page 215 To Enter these values: Enter the existing password. Factory set as: Enter Enter the first new value. Enter Display will read. 20.50 71 Enter the second new value. Enter Display will read 10.38 72 Revert back to the oxygen mode. Sample Enter Note: When altering the password both parameter codes 71 and 72 must be entered during the...
  • Page 216 NOTES A5.4...

  • Page 217: Effect Of Background Gases

    Appendix 6 EFFECT OF BACKGROUND GASES A6.1...
  • Page 218 C or 11 C. Neither of these temperatures may actually be the temperature of the process. Note 2. Servomex Application Note AP01 lists the zero offsets for a range of technically important gases at cell temperatures of 60 C and 110...
  • Page 219 Table A1 Zero Correction for Various Gases Formula Molar Zero Offset mag.susc x 10 x 0.01% x 0.01% x 0.01% x 0.01% Acetaldehyde -22.70 -0.31 -0.34 -0.35 -0.40 Acetic acid -31.50 -0.56 -0.62 -0.64 -0.74 Acetone COCH -33.70 -0.63 -0.69 -0.71 -0.82 Acetylene...
  • Page 220 Formula Molar Zero Offset mag.susc x 10 x 0.01% x 0.01% x 0.01% x 0.01% Enflurane (Ethrane) -80.10 -1.97 -2.17 -2.24 -2.57 Ethane -26.80 -0.43 -0.47 -0.49 -0.56 Ethanol -33.60 -0.62 -0.69 -0.71 -0.82 Ethyl acetate COOC -54.20 -1.22 -1.34 -1.39 -1.59 Ethyl amine...
  • Page 221 Formula Molar Zero Offset mag.susc x 10 x 0.01% x 0.01% x 0.01% x 0.01% Methyl formate HCOOCH -32.00 -0.58 -0.64 -0.66 -0.75 Methyl iodide -57.20 -1.31 -1.44 -1.48 -1.71 Methyl iso-butyl ketone (MIBK) COCH -69.30 -1.66 -1.82 -1.88 -2.16 Methyl mercaptan -35.30 -0.67...
  • Page 222 Formula Molar Zero Offset mag.susc x 10 x 0.01% x 0.01% x 0.01% x 0.01% Trimethylamine -51.70 -1.15 -1.26 -1.30 -1.50 Tungsten flouride -40.00 -0.81 -0.89 -0.92 -1.06 Urethane CO(NH -57.00 -1.30 -1.43 -1.48 -1.70 Vacuum 0.00 0.35 0.38 0.39 0.45 Vinyl bromide =CHBr...
  • Page 223 Appendix 7 SOFTWARE 01100 651, 01100 652 AND 01100 699 A7.1...
  • Page 224 APPENDIX 7. SOFTWARE 01100 651, 01100 652 AND 01100 699 This manual may be used for the above versions of software but there are a number of differences. Alarm code 67 (memory corrupted) is not permanently allocated to relay 4. It is not possible to allocate this alarm to a relay.
  • Page 225 Auto-calibration response curve The oxygen signal during the auto-calibration sequence is shown in Figure 3.3. At the start of auto- calibration the analyser measures and stores the oxygen content of the sample gas. The zero gas is turned on and then there is a short distance velocity (DV) lag before the oxygen reading changes towards zero gas.
  • Page 226 Once the calibration point has been established the zero gas flow is stopped and the span gas flow is started. There is another DV lag and the analyser searches for the end of this DV lag indicated by a change in oxygen signal. If a change is not detected within a certain time the analyser will abort the auto-calibration sequence and will return to the sample gas without automatically re-calibrating.
  • Page 227 3.10.2 Automatic Calibration Initiation Auto-calibration may be initiated either on demand or at fixed timer intervals. On Demand This sequence uses parameter code 46 and is initiated by pressing Enter The analyser will perform an auto-calibration sequence. Fixed Time Intervals If an auto-calibration sequence is required repetitively then the time interval between the sequences uses parameter code 47.
  • Page 228 The status of the analyser during an auto-calibration sequence can be checked with the displays listed in Table 3.3. TABLE 3.3 CALIBRATION STATUS INDICATION DISPLAY DESCRIPTION 0.72 Zero gas flowing and zero gas DV lag being measured. 0.74 Sample to zero 90% response being measured. 0.76 Stabilisation period, plateau being measured.
  • Page 229 3.10.5 Failure to Auto-Calibrate The analyser will not calibrate if any of the following are in error: Sample gas oxygen reading is within 1.5% O of the zero gas content. Sample gas oxygen reading is within 1.5% O of the span gas oxygen content. Zero or span gas oxygen contents out of limits.
  • Page 230 3.10.6.3 Zero Gas Flow Failure - 63 Indicates that the analyser has not detected a change in oxygen reading within a preset time interval after switching on the zero gas. This may be due to: No zero gas or low flow. Preset time intervals too short.

  • Page 231: Specification

    Appendix 8 SPECIFICATION A8.1...

  • Page 232: Functional Characteristics

    APPENDIX 8 SPECIFICATION Functional Characteristics Display: Digital LED display reading 0-100% oxygen with 0.01% resolution and over range capability. Analogue output: 0/4 - 20 mA or 20 - 4/0mA isolated, selected by the keyboard. Maximum impedance 600 ohms. Option of the output to be intrinsically safe "ib" when it is connected to ground (ie non-isolated).

  • Page 233: Performance Characteristics

    Zero <0.02% O /week Span (100% O )<0.02% O /day, <0.05% O /week Repeatability 1100A 0.02% O 1100H 0.03% O Effect of ambient temperature A change of 10 deg C (18 deg F) in the range 10 to changes: +50 deg C (14 to 122 deg F) will cause the zero to change by 0.01% max and the span to change by +/...

  • Page 234: Physical Characteristics

    The performance of pressure compensation will be degraded if the separation of the Transducer and Control (or Interface) units exceeds 30m. Pressure compensation cannot be fitted to 1100H systems. Effect of supply voltage A change of +/ 10% in the supply voltage will cause the output variation: to change by less than 0.02% O or 0.2% of FSD, whichever is...

  • Page 235: Dry Gas Sampling System 1161

    Dry Gas Sampling System 1161 (Not suitable for use with model 1132 transducer unit.) By-pass flow rate: 1 to 9 litres/min (air) Sample flow rate: 10 to 250ml/min (air) Temperature range: Operating 10 to +50 deg C (14 to 122 deg F) Storage 20 to +65 deg C ( 4 to 149 deg F)

  • Page 236: Wet Gas Sampling System

    Wet Gas Sampling System 1162 (Not for use with model 1132 transducer unit.) By-pass flow rate: 400 to 1100ml/min (air) Sample flow rate: 200ml/min recommended Temperature range: Operating 10 to +50 deg C (14 to 122 deg F) Note 1 Storage 20 to +65 deg C ( 4 to 149 deg F)

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