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Related Manuals for ZIROX SGM5-EL
Summary of Contents for ZIROX SGM5-EL
- Page 1 Electrolysis Device SGM5-EL FOR THE MODULATION OF DEFINED OXYGEN CONCENTRATIONS IN INERT GASES OPERATION MANUAL ZIROX Sensoren & Elektronik GmbH Am Koppelberg 21, D-17489 Greifswald +49 3834 8309-00, Fax: -29 e-mail: info@zirox.de...
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Page 2: Table Of Contents
Characteristics ....................11 Mechanical data / ambient conditions ..............11 Electrical data ....................11 Interface data..................... 12 Composition of the SGM5-EL ..................15 General composition ..................15 Construction of the control unit ................17 6.2.1 Power supply ..................17 6.2.2 Front ...................... 17 6.2.3 Rear ....................... - Page 3 Electrolysis Device SGM5EL Content Maintenance, overhaul and storage ................28 General notes ....................28 Replace the equipment fuse ................28 10 Appendix ........................29 10.1 Mounting instructions for Swagelok®-fittings ..........29 10.2 Declaration of conformity ................30 10.3 Warranty conditions ..................31...
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Page 4: General Information
SGM5-EL with the aim of making technical improvements, the user is responsible for inserting the additional or updated pages supplied. Proper operation of the SGM5-EL can only be ensured if the contents of this manual are known. Therefore, all chapters of this manual must be read carefully prior to operating the SGM5-EL. - Page 5 Symbol for proper handling: NOTE This symbol appears where the manual refers to the adherence to rules, instructions and proper operation. In case of disregard, damage or destruction of the SGM5-EL or its single components may result.
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Page 6: Application Fields
(approx. 1ppm O in N With the SGM5-EL, a defined amount of oxygen can be electrolyzed into or out of the measuring gas (N , argon). The downstream analysis cell ensures that the oxygen concentration is measured accurately. -
Page 7: Safety Regulations
3 Safety regulations The following regulations for industrial safety provide basic information about potential danger during the operation of the SGM5-EL. Therefore, they must be observed and strictly followed by the responsible staff. A failure-free and functional operating of the device can only be •... -
Page 8: Functional Description
Functional description 4 Functional description Measuring principle Basic element of the SGM5-EL is the “combi cell”. An electrolysis cell and additionally an analysis cell are located on a ZrO solid electrolyte pipe (general composition see chapter 6). Electrolysis and analysis cell are electrochemical cells with two platinum electrodes each. -
Page 9: Measuring Conditions
Electrolysis Device SGM5EL Functional description Based on the assumption that the total pressures of the gases are almost the same at both electrodes (in this case the volume concentrations may be used in the calculation instead of the partial pressures) and replacing the parameters by numbers in equation (I) the following equation applies: (-46,42 ·... -
Page 10: Gas Flow Quantity
4.2.3 Accuracy of the measurement The SGM5-EL can be used as an electrolysis device and as an oxygen measuring device. For the measuring of oxygen the manufacturer guarantees a measuring error of less than 3% (relative error) only at oxygen concentrations within a range of 20.64*10... -
Page 11: Technical Data
......100 mbar overpressure vs. ambient pressure Max. permitted temperature of the measured gas ......... 80°C at the gas inlet Pressure loss in the SGM5-EL ..... Approx. 1 kPa (100 mm water column) at 10 l/h Mechanical data / ambient conditions Dimensions .......... Controlling device: 320×240×90... -
Page 12: Interface Data
Electrolysis Device SGM5EL Technical data Interface data Serial interface RS-232 Transfer rate ........max. 19200 Baud, adjustable Stop bits ........1 Data bits ........8 Parity ..........none Handshake ........none Interface commands All characters are ASCII - characters. Each transfer is completed with 'CR' (CR = carriage return). Description Command Reply (response) - Page 13 Save values Error code Meaning error0 Transcription error error11 Measuring temperature too low error16 Thermocouple defective Error20 System error Error99 No connection to the SGM5-EL Pin assignment of the socket SUB-D 9-pol. F Pin assignment RS 232 Pin No. Marking GNDA...
- Page 14 Electrolysis Device SGM5EL Technical data Analog output ....... 0/4 ... 20 mA, adjustable, alternatively 0 ··· 5 V or 0 ··· 10 V (on request) Alarm indication ......three potential free contacts (Changer), max. 60 V DC, 1 A, 30 W or 125 V AC, 1A, 62 VA Pin assignment of the socket analog output SUB-D 15-pol.
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Page 15: Composition Of The Sgm5-El
6 Composition of the SGM5-EL General composition The SGM5-EL is composed of the control unit and the combicell. The general composition and evaluation unit are shown in figure 1. The combi cell consists of electrolysis cell and analysis cell (figure 2). - Page 16 Electrolysis Device SGM5EL Composition In order to gain a higher oxide ion conductivity of the zirconium dioxide tube, Sensor heater the sensor is heated up to 750°C. This also prevents interfering reactions with combustible components of the measuring gas at the electrode due to chemical unbalances.
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Page 17: Construction Of The Control Unit
30°. The angle of inclination inclination of the SGM5-EL can be altered by pulling out the two attachment points of adjustment the carrying handle between 0° and 30°. When the attachment points are released, the carrying handle engages in the chosen position. -
Page 18: Rear
Composition 6.2.3 Rear All connections and the power switch are on the rear of the SGM5-EL. Fig 4: Rear of the control unit 6.2.4 Combi cell The combi cell is connected with the control unit with a 12pol cable. The... -
Page 19: Installation And Initiation
SGM5-EL! Set-up of operating state A temperature compensation is required after the transportation of the SGM5-EL from cold surroundings to a site with higher ambient temperature or humidity. A waiting time of about 2 hours before switching-on must be considered. - Page 20 4. If you want to install an external flow meter, you have to install it behind the gas outlet (where potential leaks do not have an influence on the measuring result). 5. Connect the SGM5-EL with the power supply. NOTE The measuring gas can also flow through the cold combi cell.
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Page 21: Operation And Parametrization
Operation 8.1.1 Switch-on and measurement indication When the SGM5-EL is in operating state and all lines are connected according to chapter 7.2, it can be switched on. The combi cell reaches its operating temperature of 750 °C after approx. 10 minutes. The current measuring value is displayed but only reaches the indicated error limits after an hour when the thermal conditions in the measuring cell are even. -
Page 22: Status And Error Messages
8.1.4 Status and error messages Self-check of the During the measuring the functions of the measuring cell are monitored. In SGM5-EL case of faults and/or error, messages are displayed. The relay output is activated simultaneously. The following status and error messages can appear:... - Page 23 Electrolysis Device SGM5EL Operation A. Control CONTROL PARAMETER CONTROL: [ppm] also OFF, Uz/mV ,Ie/mA SETPOINT: input value Kpr: 0.04 0.01 SAVE. RETURN B. Strip chart XY-Plot XY-Plot TRACE ppm O also Ie/mA Yaxis-min: 0 ppm Yaxis-max: 300000 ppm Xaxis: 3 min SAVE RETURN C.
- Page 24 Electrolysis Device SGM5EL Operation C.1. General GENERAL USER CODE: 0000 NEW USER CODE: 0000 LANGUAGE: ENGLISH English,German BAUD RATE: 19200 4800,9600 C.2. Limits LIMIT VALUES LIMIT VALUE 1: > 250000 ppm 1...250000ppm, < or > LIMIT VALUE 2: > 250000 ppm 1...250000ppm, <...
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Page 25: Calibration
Electrolysis Device SGM5EL Operation D. Calibration CALIBRATION 206400 ppm ZERO GAS: 206400 ppm CALIBR. ZERO POINT: ( 5.6) SPAN GAS: 1 ppm CALIBR. SPAN GAS: ( 1.00) START/SAVE RETURN Calibration For measurements with high accuracy requirements a calibration is highly recommended (The high stability of the combi cell requires one check-up per year only!). -
Page 26: Fault Clearance
Electrolysis current too low Electrodes defective Send SGM5-EL to manufacturer Cell voltage of analysis cell Leaks or electrodes of the Check gas connections too low (lower than expected) analysis cell defective... -
Page 27: Operation Via Pc
Electrolysis Device SGM5EL Operation Operation via PC The most important settings of the SGM5-EL can also be executed with a software (optional) via PC. After starting the program, the COM interface must be entered which connects the equipment with the computer. In the following window the cell... -
Page 28: Maintenance, Overhaul And Storage
In case of defects in combi cell or thermocouple, send the SGM5-EL to the manufacturer for an overhaul. storage If not used, the SGM5-EL has to be stored in a dry, dust-free room in the original packing (if possible). Replace the equipment fuse Before replacing the equipment fuse, turn off the SGM5-EL and separate it from the power supply system. -
Page 29: Appendix
Electrolysis Device SGM5EL Appendix 10 Appendix 10.1 Mounting instructions for Swagelok®-fittings... -
Page 30: Declaration Of Conformity
Electrolysis Device SGM5EL Appendix 10.2 Declaration of conformity... -
Page 31: Warranty Conditions
In case of defects and faults within 12 months (probe) and 24 months (electronics assembly) respectively after dispatch, ZIROX will clear faults at its own option by repair or replacement. The purchaser must give prompt written notice to ZIROX.