sewerin EX-TEC Combi Operating Instructions Manual
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sewerin EX-TEC Combi Operating Instructions Manual

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Summary of Contents for sewerin EX-TEC Combi

  • Page 1 Operating Instructions...
  • Page 2 Measurable success by Sewerin equipment Congratulations. You have chosen a quality instrument manufactured by Hermann Sewerin GmbH. Our equipment will provide you with the highest standards of perfor- mance, safety and efficiency. They correspond with the national and international guide-lines.
  • Page 3 Illustration EX-TEC Combi Device variation 1 EX-TEC® Combi Device variation 2 EX-TEC® Combi 100%...
  • Page 4 Brief operating instructions EX-TEC Combi: brief operating instructions Switch on/off Toggle between GAS WARNING/GAS MEASUREMENT operating modes (Device variation 2) Device variation 1: Toggle between  GAS WARNING/GAS MEASURE- MENT operating modes Switch pump on/off  (in GAS MEASUREMENT mode)
  • Page 5 Operating Instructions EX-TEC® Combi 15.06.2005 – V2.X – 103401 – en...
  • Page 6 Hermann Sewerin GmbH accepts no liability for damage resulting from non-compliance with the foregoing. The guarantee and liability provisions in the Hermann Sewerin GmbH terms of sale and supply are not extended by the foregoing. We reserve the right to make changes in the context of continued techni- cal development.

  • Page 7: Table Of Contents

    Contents Page EX-TEC Combi system ............1 Excess-gas warning and measuring instrument .......1 Fields of application ..............2 Test certificates .................4 Carrying equipment ..............5 Safety ..................6 Safety notes ................6 Measuring operation ...............8 Instrument description ...............8 Switching on ................9 Modes ..................13 Switching gases ..............15 Alarms ..................16...
  • Page 8 Contents Page Info menu ................39 Menu structure ................39 Overview .................40 Adjustment menu ..............43 Menu structure ................43 Setting the H S sensor ............44 Setting the CO sensor .............45 Setting the O sensor ..............46 Setting the CO sensor ............47 Setting the CH sensor ............48 Setting the measurement quantity ..........50 Setting the test gas concentration ...........51...
  • Page 9 Contents Page Application hints ..............78 10.1 Application hints from report of suitability examination PFG-No. 41300401P ...............78 Technical aspects ..............80 11.1 Technical notices ..............80 11.2 Technical data .................82 11.3 Error messages ...............93 11.4 Error and Alarm properties ............97 11.5 Wearing Parts .................98 11.6 Spare parts ................98 11.7...

  • Page 10: Ex-Tec Combi System

    1 EX-TEC Combi system EX-TEC Combi system Excess-gas warning and measuring instrument The EX-TEC Combi is a com- bined warning and measuring instrument for a number of diffe- rent gases. It consists of: the basic instrument, incorpo-  rating a pump and a data...

  • Page 11: Fields Of Application

    1 EX-TEC Combi system Fields of application The EX-TEC Combi is suitable for use in the following fields: WARNING mode Workplace (atmospheric) monitoring in shafts and chambers in these fields: drinking-water supply (metering  and transfer shafts) district-heating systems ...
  • Page 12 1 EX-TEC Combi system - due to welding and heating processes with naked flames - due to air depletion Warning of toxic gases  - due to the formation of carbon dioxide by bacterial conversion processes - due to the formation of carbon dioxide in areas where there...

  • Page 13: Test Certificates

    1 EX-TEC Combi system Test certificates Passive explosion protection The EX-TEC Combi has been tested for explosion protection in accordance with the European norm (CENELEC): EC prototype test certificate: PTB 96 ATEX 2166, supplements 1 and 3 Identification: II 2 G EEx ib d IIB T3...

  • Page 14: Carrying Equipment

    1 EX-TEC Combi system Carrying equipment TRIANGEL carrying system a quick and easy way of carrying the instrument, consisting of a carrying strap and neck-pad front view side view back view CROSS-STRAP carrying system a comfortable way to carry the instrument for longer periods,...

  • Page 15: Safety

    Always use a probe hose with a hydrophobic filter. CAUTION! Do not use other than the original SEWERIN fine dust filters with the EX-TEC Combi. Never use ac- tivated carbon filters, as these will collect H S gas particles, thus causing the warning feature to stop working properly.
  • Page 16 Use the test gases only in well-ventilated areas, as some concentrations exceed the pertinent MAK values. CAUTION! The EX-TEC Combi satisfies the limits of the EMV regulation. When using it near mobile radio equip- ment please also observe the instructions in their manuals.

  • Page 17: Measuring Operation

    3 Measuring operation Measuring operation Instrument description Note: Fold out the illustration inside the front cover! Item description function alarm lamp optical warning on: breaching alarm thresholds  display of error messages  display of: gas concentrations  menu items ...

  • Page 18: Switching On

     (e.g. 2.1) and instrument type (Combi) are displayed Note: All the following instrument displays assume that the EX-TEC Combi is fully equipped for the mea- surement of 5 gases (CH - CO S - CO).
  • Page 19 3 Measuring operation - methane the measurement range for  methane is displayed: 0.00 – 4.40 %VOL depending on your last setting  a display in the %UEG, %LEL, %LIE, %VOL, %GAZ quanti- ties may also be possible (cf. section 7.6: Adjusting the CH sensor) - carbon dioxide the measurement range for...
  • Page 20 3 Measuring operation S - hydrogen sulphide the measurement range for  hydrogen sulphide is displayed: 0 – 100 PPM display of the sensor lifetime  in the form of bars (cf. section 11.2: Technical data): 8 bars = 100 % CO - carbon monoxide the measurement range for ...
  • Page 21 15 seconds switches to measuring operation Note: If the EX-TEC Combi now automatically switches off, the inspection date has passed with the inspec- tion block switched on (cf. section 9.4: Setting the inspection block). The instrument does not revert to measuring opera- tion until an inspection has been carried out and confirmed.

  • Page 22: Modes

    1.2: Fields of application) i m m e d i a t e l y a f t e r b e i n g  switched on the EX-TEC Combi is always in warning mode Indication: all alarm thresholds are ...
  • Page 23 Note: If you wish to use the EX-TEC Combi purely as a warn- ing device, you can deactivate GAS-MEASURING mode (cf. section 9.5: Setting the 100 vol.% range)!

  • Page 24: Switching Gases

    3 Measuring operation Switching gases repeatedly pressing the hand  key toggles between auto- matic and manual gas-type switching Automatic switching each available gas is dis-  played for about 3 seconds before switching to the next: Sequence: - CO S - CO Manual switching each gas is displayed until a...

  • Page 25: Alarms

    900)“ require certain limit values to be monitored and adhered to in the air in the workplace. In WARNING mode only the EX-TEC Combi thus has three different types of alarm: one optical (item 1), one acoustic (item 7) and one that takes the form of the LCD illumination (item 2)

  • Page 26: Instantaneous Value Alarms (Al1, Al2, Al3)

    3 Measuring operation Instantaneous value alarms (AL1, AL2, AL3) when in gas-warning mode  the EX-TEC Combi is con- stantly in alarm readiness this is displayed in the LCD  by two symbols: Ex-area and alarm threshold the alarm is triggered as soon ...
  • Page 27 3 Measuring operation Oxygen O alarm thresholds (factory set-  tings): AL1 = 18.0 %VOL AL2 = 23.0 %VOL the AL1 alarm threshold is  triggered when the value falls below the threshold Hydrogen sulphide H alarm thresholds (factory set- ...
  • Page 28 3 Measuring operation Triggering the alarm thresholds AL1 alarm (Example: CH exceeding this alarm threshold  triggers: - the optical alarm (item 1) - the acoustic alarm (item 7) - the appearance of AL1 in the LCD the interval tone is clearly dis- ...
  • Page 29 3 Measuring operation AL3 alarm (Example: CH if the end of the measurement  range is exceeded, the optical and acoustic alarms (items 1 and 7) are triggered and AL3 appears in the LCD the continuous tone is clearly  distinguishable from the ope- rating signal the AL3 alarm cannot be...
  • Page 30 3 Measuring operation Note: In the GAS-WARNING mode the following remarks should be observed during operation at degrees be- low zero, high temperatures and high humidity: Degrees below zero lead to a diminished display  (up to 4 % LEL at -10 °C) at the zero-point of the methane and propane sensor.
  • Page 31 3 Measuring operation Summary All alarm thresholds (factory settings) and clearance facilities in brief: Alarm display Pre-alarm Main alarm End of range Confirmation 0.90 %VOL 2.20 %VOL 4,40 %VOL 20 %LEL 50 %LEL 100 %LEL 0.34 %VOL 0.86 %VOL 1.7 %VOL 0.15 %VOL 0.35 %VOL 0.7 %VOL...

  • Page 32: Short-Term Value Alarm (Kzw), Long-Term Value Alarm (Lzw), Minimum And Maximum Values (Min/Max)

    3 Measuring operation Short-term value alarm (KZW), long-term value alarm (LZW), minimum and maximum values (MIN/MAX) briefly press the on/off key in  gas-warning mode MIN/MAX - minimum and maximum values Often it is only the display of the minimum or maximum con- centrations encountered so far that is of interest.
  • Page 33 3 Measuring operation KZW - short-term value alarm This monitoring mode is based on an averaging period, usu- ally 15 minutes (cf. section 8.5: Setting the short-term value interval). The total concentrations of the pertinent toxic gas over the averaging period must not exceed the product of the MAK value and the overshoot factor.
  • Page 34 3 Measuring operation LZW - long-term value alarm This monitoring mode is based on a shift length of 8 hours. The total concentrations of the pertinent toxic gas over the length of the shift must not exceed the MAK value. Example: a constant reading >...

  • Page 35: Zero Point Adjustment

    3 Measuring operation Zero point adjustment if the EX-TEC Combi deviates  from its zero point after flush- ing with „fresh air“ (observe tolerances), this can be cor- rected manually pressing the zero point key  sets the zero point for the gas displayed (max.

  • Page 36: Operating Hours Display And Battery Alarm

    3 Measuring operation Contrast simultaneously pressing the  light key and a arrow key increases or reduces the con- trast of the LCD your last setting is preserved  even when the instrument is switched off 3.10 Operating hours display and battery alarm Operating hours display simultaneously pressing both ...

  • Page 37: Switching Off

    3 Measuring operation this period of time is empha-  sized acoustically by a double beep tone after that the instrument must  be recharged (cf. section 4: Charging) 3.11 Switching off press the on/off key for about  3 seconds the optical and acoustic control ...

  • Page 38: Charging

    Car cable M4 12 V= mobile,  Car cable M4 24 V= mounting.  Switch the EX-TEC Combi off and place it in the charger. A dis- play on the following lines appears: the instrument still has 5 ope- ...

  • Page 39: Self-Discharge

    You can counteract this by fully discharging the EX-TEC Combi regularly (e.g. once a month): leave it switched on until it switches itself off, then recharge it!

  • Page 40: Testing/Maintenance

    5 Testing / maintenance Testing/maintenance Note: Gas warning instruments must always be tested by the user before use or before each shift. But at a minimum all 4 month. The test must cover: the battery charge  the display with environmental gas conditions ...

  • Page 41: Function Testing, Testing Display Accuracy, Maintenance

    (adjustment) ist company servicing SEWERIN, annual; (maintenance, any specialist or author- on defective instru- repairs required) ised company ments Function testing This is the simplest form of instrument test, which must be car- ried out by the user before starting work.
  • Page 42 A full function test must also be carried out. Servicing - maintenance and repair Instruments must be serviced (and any necessary repairs car- ried out) at least once a year, by SEWERIN Service, a specialist company authorised by SEWERIN or an authorised specialist of the gas-supply company.

  • Page 43: Test Set

    5 Testing / maintenance Test set The test set SPE VOL is available to test the pump power, zero point and sensitivity: (Fig. 1) Item description function device connection connection with: probe connection  test heads  test gas connection connection for: test gas cans ...

  • Page 44: Test Gases

    5 Testing / maintenance Test gases The following test gases are used in conjunction with the test set SPE VOL tester to test zero point and sensitivity: Test gas Methane CH zero point: fresh air sensitivity 1: 2.2 vol.% (50 %LEL) CH in synth.
  • Page 45 5 Testing / maintenance These gases are supplied in 6 test gas cans: 2.2 vol.% CH , 2.0 vol.% CO , 17.5 vol.% O , 40 ppm CO  1.0 vol.% C  0.3 vol.% C  40 ppm H ...

  • Page 46: Testing The Pump Power, Zero Point And Sensitivity

    5 Testing / maintenance Testing the pump power, zero point and sensitivity Proceed as follows: screw the selected test gas can onto the test set SPE VOL as  far as it will go (fig. 1, item B) connect the instrument‘s probe connection (item 3) with the ...
  • Page 47 5 Testing / maintenance If display values are outside these tolerances the pertinent sensor must be readjusted (cf. section 7: Adjustment menu). Sensitivity press the release key (fig. 1, item D) on the test set SPE VOL  and adjust the flow to the fresh air value (fig. 1, item F) hold down the release key until the displayed concentration ...

  • Page 48: Info Menu

    6 Info menu Info menu Menu structure INFO V2.1 JUSTAGE 0 PPM 40 PPM 0 PPM 30 PPM 0 VOL.% 20,9 VOL.% 0 VOL.% 2,00 VOL.% 0 %UEG 50 %UEG 100 %VOL %UEG %LEL %LIE %VOL %GAZ %VOL %GAZ PRÜFGAS INS-OK EXIT >...

  • Page 49: Overview

    6 Info menu Overview The info menu is accessible only when the EX-TEC Combi is switched off. now simultaneously press the  following 3 keys you are now in the INFO menu  item (cf. menu structure) the software version number ...
  • Page 50 6 Info menu you are now in the ADJUST-  MENT menu item (cf. section 7: Adjustment menu) the arrow-up key brings you  to the next display you are now in the MEMORY  menu item (cf. section 8: Memory menu) the arrow-up key brings you ...
  • Page 51 6 Info menu you are now in the EXIT menu  item there are now 2 ways of con-  tinuing to navigate through the menu structure pressing the arrow-up key  returns you to the ADJUST- MENT menu item (cf. menu structure) ...

  • Page 52: Adjustment Menu

    7 Adjustment menu Adjustment menu Menu structure JUSTAGE 0 PPM 40 PPM 0 PPM 30 PPM 0 VOL.% 20,9 VOL.% 0 VOL.% 2,00 VOL.% 0 %UEG 50 %UEG 100 %VOL %UEG %LEL %LIE %VOL %GAZ %VOL %GAZ PRÜFGAS INS-OK EXIT > you are in the ADJUSTMENT ...

  • Page 53: Setting The H S Sensor

    7 Adjustment menu Setting the H S sensor S - zero point 0 PPM release fresh air from the  SPE VOL wait for the display to settle at  a stable value and confirm the adjustment with the on/off key (OK appears in the LCD) pressing the arrow-up key ...

  • Page 54: Setting The Co Sensor

    7 Adjustment menu Setting the CO sensor CO - zero point 0 PPM now release fresh air from the  SPE VOL wait for the display to settle at  a stable value and confirm the adjustment with the on/off key (OK appears in the LCD) pressing the arrow-up key ...

  • Page 55: Setting The O Sensor

    7 Adjustment menu Setting the O sensor - zero point 0 %VOL now release test gas 100 vol.%  from the SPE VOL wait for the display to settle at  a stable value and confirm the adjustment with the on/off key (OK appears in the LCD) once this has happened, turn ...

  • Page 56: Setting The Co Sensor

    - zero point 0 %VOL now release fresh air from the  SPE VOL through a carbon dioxide filter (Sewerin acces- sory, see section 13.2) wait for the display to settle at  a stable value and confirm the...

  • Page 57: Setting The Ch Sensor

    7 Adjustment menu Setting the CH sensor - zero point 0 %VOL now release fresh air from the  SPE VOL wait for the display to settle at  a stable value and confirm the adjustment with the on/off key (OK appears in the LCD) pressing the arrow-up key ...
  • Page 58 7 Adjustment menu - sensitivity 100 %VOL now release test gas 100 %VOL  CH4 from the SPE VOL alternatively you can dispense  with the SPE VOL and use natural gas from the local supply instead wait for the display to settle at ...

  • Page 59: Setting The Measurement Quantity

    7 Adjustment menu confirm the display, e.g.  %VOL, with the on/off key (OK appears in the LCD) this setting is preserved  even when the instrument is switched off pressing the arrow-up key  brings you to the measure- ment-quantity setting facility Setting the measurement quantity , CO...

  • Page 60: Setting The Test Gas Concentration

    Setting the test gas concentration PRÜFGAS EXIT >> if you use use test gases  other than those supplied by SEWERIN, the concentration must be set accordingly you are in the TEST GAS  menu item briefly pressing the on/off ...
  • Page 61 7 Adjustment menu briefly pressing the on/off key  brings you to the CH test gas concentration setting facility the current concentration is  displayed (e.g.: 50 %UEG = 2.20 %VOL) you can set the desired con-  centration by repeatedly pressing or holding down a arrow key the selected concentration is...
  • Page 62 7 Adjustment menu test gas 2.20 vol.% (50%LEL) methane CH adjustment range: 1.75 – 3.50 vol.% (40 – 80 %LEL) step size 0.05 vol.% (1 %LEL) test gas 1.0 vol.% (59 %LEL) propane C adjustment range 0.68 – 1.36 vol.% (40 – 88 %LEL) step size 0.02 vol.% (1 %LEL) test gas...

  • Page 63: Inspection Confirmation

     brings you to the inspection Inspection confirmation INSPECTION OK the EX-TEC Combi can re-  mind you of scheduled inspec- tion and adjustment dates this requires the inspection  interval and the inspection block to be set in the system menu (cf.

  • Page 64: Leaving The Adjustment Menu

    7 Adjustment menu the next inspection or adjust-  ment date is calculated in ac- cordance with the set inspec- tion interval pressing the arrow-up key  brings you to the exit from the adjustment menu 7.10 Leaving the adjustment menu EXIT >...

  • Page 65: Memory Menu

    Memory menu Menu structure MEM-CLR MEMORY MEM-INT MEM-STOP KZW-INT EXIT > the EX-TEC Combi continu-  ously stores readings from the sensors that are present these can later be read out  with the appropriate evalua- tion software (separate user...

  • Page 66: Clearing Memory

    8 Memory menu Clearing memory (⊗) MEMORY CLEAR if you have set the memory  mode = stack memory (cf. section 8.4: Setting memory mode), this function enables you to clear the entire readings memory confirm the clearance with  the on/off key (OK appears in the LCD) pressing the arrow-up key...

  • Page 67: Setting The Memory Interval

    8 Memory menu Setting the memory interval (⊗) MEMORY INTERVAL briefly pressing the on/off key  brings you to the memory-in- terval setting facility by repeatedly pressing or  holding down a arrow key you can select the following memory intervals: Seconds range: 1 second - 10 seconds...
  • Page 68 8 Memory menu Data-memory capacity the EX-TEC Combi stores the following values in its data  memory: - readings for each gas (instantaneous values at the moment of scanning) - event values for each gas (MIN, MAX, KZW, LZW values and...

  • Page 69: Setting The Memory Mode

    8 Memory menu confirm the interval with the  on/off key this setting is preserved  even when the instrument is switched off pressing the arrow-up key  brings you to the memory- mode setting facility Setting the memory mode (⊗) MEMORY STOP you have the possibility to...

  • Page 70: Setting The Short-Term Value Interval

    8 Memory menu ON (stack memory) readings are only written to memory until it is full, thus write- protecting the oldest values confirm the memory mode with  the on/off key this setting is preserved  even when the instrument is switched off pressing the arrow-up key ...

  • Page 71: Leaving The Memory Menu

    8 Memory menu the usual setting is for a 15  minutes averaging interval confirm the interval with the  on/off key this setting is preserved  even when the instrument is switched off pressing the arrow-up key  brings you to the exit from the memory menu Leaving the memory menu EXIT >...

  • Page 72: System Menu

    9 System menu System menu Menu structure SYSTEM DAT/UHR INS-INT INS-STOP 100 %VOL PIN-CODE ALARM EXIT > you are in the SYSTEM menu  item briefly pressing the on/off  key brings you to the system menu...

  • Page 73: Setting The Date/Time

    9 System menu Setting the date/time DATE/TIME briefly pressing the on/off key  brings you to the date/time setting Date the last day (24 - flashing)  and month (02) to be set are displayed by repeatedly pressing or  holding down a arrow key ...
  • Page 74 9 System menu by repeatedly pressing or  holding down a arrow key ..and confirming with the  on/off key you can set the current year Time the last hours (17 - flashing)  and minutes (49) to be set are displayed by repeatedly pressing or ...

  • Page 75: Setting The Inspection Interval

    9 System menu Setting the inspection interval INSPECTION INTERVAL the EX-TEC Combi can re-  mind you of regular scheduled tests (e.g. inspections, adjust- ments) this reminder is based on the  inspection interval briefly pressing the on/off key ...
  • Page 76 09. – 15.03.2004 During the next 3 weeks the EX-TEC Combi will display the fol- lowing references to the inspection date: 24.02.2004 – 01.03.2004 (> 1 week before)
  • Page 77 9 System menu 09.03.2004 – 15.03.2004 (scheduled) LCD: the due inspection date is dis- played on switch-on lamp/buzzer: interval light/sound instrument: when the display is cleared with the buzzer key (item 4) or after waiting for about 15 seconds the instrument automatically switches to measuring operation.

  • Page 78: Setting The Inspection Block

    9 System menu Setting the inspection block INSPECTION STOP to make sure your EX-TEC  Combi is regularly checked you can activate an inspec- tion block this block does not become  active until the next inspection date has passed (cf. section 9.3: Setting the inspection interval) after that you cannot use the...

  • Page 79: Setting The 100 Vol.% Range

     brings you to the operating- signal setting facility Setting the 100 vol.% range 100 %VOL (GAS-MEASURING) the EX-TEC Combi has  two modes (cf. section 3.3: Modes): WARNING mode monitoring the atmosphere (workplace monitoring) in...

  • Page 80: Setting The Pin Code

    9 System menu by repeatedly pressing a  arrow key ..and confirming with the on/  off key you can set the desired condition this setting is preserved  even when the instrument is switched off pressing the arrow-up key ...
  • Page 81  brings you to the alarm-thresh- old setting facility Note: Make a note of your PIN code and only give it to authorised persons. If you forget your PIN, please contact SEWERIN Service.

  • Page 82: Setting The Alarm Thresholds

    Setting the alarm thresholds ALARM EXIT >> you can set your own alarm  thresholds if you do not wish to use those pre-set by SEWERIN you are in the ALARM menu  item briefly pressing the on/off  key brings you to the alarm-...
  • Page 83 9 System menu Example: CH alarm threshold 2 you are now in the CH4 AL2  menu item briefly pressing the on/off key  brings you to the facility to set alarm threshold 2 for methane the current alarm threshold is ...
  • Page 84 9 System menu AL1 threshold AL2 threshold Methane CH (vol.%) 0.90 vol.% 2.20 vol.% adjustment range: 0.45 – 4.15 vol.% 0.50 – 4.20 vol.% step size: 0.05 Vol.% 0.05 Vol.% Methane CH (%LEL) 20 %LEL 50 %LEL adjustment range: 10 – 94 %LEL 11 –...
  • Page 85 9 System menu confirm the alarm threshold  with the on/off key this setting is preserved even  when the instrument is switched repeatedly pressing a arrow  key brings you to the exit from the alarm-threshold menu EXIT >> signpost (>>) to menu level 2 ...

  • Page 86: Checking The Lcd

    9 System menu Checking the LCD with this function you can carry  out a visual check that all segments of the LCD are in working order confirm the LCD check with  the on/off key all the possible LCD characters ...

  • Page 87: Application Hints

    On the basis of the measurement results and remarks contained in the test report PFG-No 41300401P, the EX-TEC portable gas warning device from Hermann Sewerin GmbH is suitable for measuring carbon monoxide up to 500 ppm CO, hydrogen sulphide up to 100 ppm H...
  • Page 88 10 Application hints Other indentification regulations, especially those of ElexV, re- mains unaffected. By attaching this name plate, the manufacturer confirms that the devices meet the properties and technical re- quirements described in this report. Any device not bearing this name plate does not conform to the present report.

  • Page 89: Technical Aspects

    The rule of thumb is: the concentration display is delayed by about 1 second per metre of hose. Always use SEWERIN probe hoses 1 m, 2 m or 6 m long. The maximum length of 12 m should not be exceeded.
  • Page 90 11.5: Wearing parts)! CAUTION! Do not use other than the original SEWERIN fine dust filters with the EX-TEC Combi. Never use ac- tivated carbon filters, as these will collect H S gas particles, thus causing the warning feature to stop...

  • Page 91: Technical Data

    11 Technical aspects 11.2 Technical data Instrument data Serial no.: 045 01 0001 (type - model - number) Dimensions: 129 x 192 x 65 mm (W x H x D) Weight: 1500 g (depending on sensor equipment) Type of protection: IP 54 Fields of application Operating temperature: -10 °C –...
  • Page 92 11 Technical aspects Pump performance Gas-warning: > 30 l/h and >150 mbar Gas-measuring: > 50 l/h and >150 mbar Sensors warm-up time for all sensors: < 60s...
  • Page 93 11 Technical aspects Sensor - Methane CH Sensor data measurement principle: combined sensor, thermal shad- ing (TS) and thermal conductivity (TC) measurement range: 0 – 4.40 vol.% (AL3) in 0.05 vol.% steps or 0 – 100 %LEL (AL3) in 1 %LEL steps time: <...
  • Page 94 11 Technical aspects Sensor - Carbon dioxide CO Sensor data measurement principle: infra-red sensor (IR) measurement range: 0.06 – 5.00 vol.% (AL3) in 0.02 vol.% steps zero point drift: 0.12 vol.% time: < 20 seconds storage temperature: -20 °C – +60 °C (for repl. sensors) Alarm thresholds (factory settings) AL1 = 0.50 vol.% AL2=1.00 vol.% Temperature influence...
  • Page 95 11 Technical aspects Sensor - Oxygen O Sensor data measurement principle: electrochemical sensor (EC) measurement range: 0 – 25.0 vol.% (AL3) in 0.1 vol.% steps time: < 30 seconds storage temperature: -0 °C – +20 °C (for repl. sensors) Alarm thresholds (factory settings) AL1 = 18.0 vol.% AL2=23.0 vol.% Temperature influence sensitivity...
  • Page 96 11 Technical aspects Sensor - Hydrogen sulphide H Sensor data measurement principle: electrochemical sensor (EC) measurement range: 2 – 100 ppm (AL3) in 1 ppm steps zero point drift: 3 ppm time: < 30 seconds storage temperature: -0 °C – +20 °C (for repl. sensors) Alarm thresholds (factory settings) AL1 = 10 ppm AL2 = 20 ppm...
  • Page 97 11 Technical aspects Sensor - Carbon monoxide CO Sensor data measurement principle: electrochemical sensor (EC) measurement range: 2 – 500 ppm (AL3) in 1 ppm steps zero point drift: 4 ppm time: < 30 seconds storage temperature: -0 °C – +20 °C (for repl. sensors) Alarm thresholds (factory settings) AL1 = 30 ppm AL2 = 60 ppm...
  • Page 98 11 Technical aspects Sensor - Hydrogen sulphide H S/Carbon monoxide CO Sensor data measurement principle: electrochemical combined sensor (EC) measurement range H 2 – 100 ppm (AL3) in 1 ppm steps measurement range CO: 2 – 500 ppm (AL3) in 1 ppm steps zero point drift H 3 ppm zero point drift CO:...
  • Page 99 11 Technical aspects Sensor - Propane C Sensor data measurement principle: combined sensor catalytic com- bustion and thermal conductivity measurement range: 0 – 1.70 vol.% (AL3) in 0.05 vol.% steps or 0 – 100 %LEL (AL3) in 1 %LEL steps time: <...
  • Page 100 11 Technical aspects Sensor - Nonane C (⊗) Sensor data measurement principle: combined sensor catalytic combus- tion and thermal conductivity measurement range: 0 – 0.70 vol.% (AL3) in 0.05 vol.% steps or 0 – 100 %LEL (AL3) in 1 %LEL steps time: <...
  • Page 101 11 Technical aspects Sensor - Ammoniak NH (⊗) Sensor data measurement principle: electrochemical sensor (EC) measurement range: 2 – 100 ppm (AL3) in 1 ppm steps zero point drift: 1 ppm time: < 90 seconds storage temperature: 0 °C – +20 °C (for repl. sensors) Alarm thresholds (factory settings) AL1 = 50 ppm AL2 = 75 ppm...

  • Page 102: Error Messages

    11 Technical aspects 11.3 Error messages the EX-TEC Combi detects  faults itself and displays an error code in the LCD Error code Cause, Remedy and Error properties F1 ....Sensor error: No sensor found Remedy : switch the device off/on again,...
  • Page 103 Error code Cause, Remedy and Error properties F32 ....Adjustment error: Zero point in the O range (EC), Remedy : check test gas, repeat the adjust- ment, contact SEWERIN-Service Error properties: 3s alarm, self-resetting F33 ....Adjustment error: Sensitivity in the O range (EC), Remedy:...
  • Page 104 H S sensor Error properties: self-resetting, non clearable F50 ....Microcontroller ROM-Test: Self-test faulty Remedy: switch the device off/on again, SEWERIN-Service Error properties: self-retaining, non clearable F51 ....Microcontroller RAM-Test: Self-test faulty Remedy: switch the device off/on again, SEWERIN-Service Error properties: self-retaining, non clearable F52 ....
  • Page 105 11 Technical aspects Error code Cause, Remedy and Error properties F54 ....External RAM-Test: Self-test faulty Remedy: switch the device off/on again, SEWERIN-Service Error properties: self-retaining, non clearable F55 ....Clock module: Clock error Remedy: switch the device off/on again,...

  • Page 106: Error And Alarm Properties

    11 Technical aspects Alarm Cause, Remedy and Alarm properties AL1 ....Lower alarm threshold: Alarm threshold exceeded Alarm properties: acoustic alarm clearable, optical alarm stays on, self-resetting Exception O sensor (cf. Chap. 3.6): fallen below the alarm theshold Alarm properties:clearable when the level of the alarm threshold exceeds once again AL2 ....

  • Page 107: Wearing Parts

    11 Technical aspects 11.5 Wearing Parts Fine dust filter ... in the probe connection from the EX-TEC Combi (item 3) to most probes Hydrophobic filter ..in the 1 m, 2 m and 6 m probe hoses Test gas can ....various concentrations for monitoring and adjustment Note: Test gas can are under pressure: do not store above...

  • Page 108: Hints On Disposal

    Corresponding EWC Code Instrument 16 02 13 Test gas can 16 05 05 Battery, accu 16 06 05 Old Instruments Old instruments can be returned to Hermann Sewerin GmbH. We will arrange the qualified disposal free of charge through certified specialists.

  • Page 109: Delivery Variants And Accessories

    13 Delivery variants and accessories Delivery variants and accessories 13.1 Delivery variants EX-TEC Combi Part-No.: MG02-10001 Multiple Gas Warning Device with built-in pump, data storage  and serial port with space to plug-in 4 sensors  for the monitoring of max. 5 ...

  • Page 110: Accessories

    13 Delivery variants and accessories 13.2 Accessories Charging Technique Docking station HS 1,2 A Part-No.: LP08-10201 to charge the instrument,  with a connection socket for  the AC/DC adapter or a car cable AC/DC adapter M4 Part-No.: LD10-10001 to connect the docking station ...
  • Page 111 13 Delivery variants and accessories Car cable M4 24 V= mounting Part-No.: ZL09-10000 to connect the docking station  HS 1,2 A to 24 volt= vehicle electrics with voltage transformer and  blade receptacles Carrying Technique Carrying system “Triangel” Part-No.: 3209-0005 upholstered back belt, and ...
  • Page 112 13 Delivery variants and accessories Case VT/SR Part-No.: ZD08-10000 w i t h b u i l t - i n p a r t i t i o n s ,  charging possibility from the outside Case VT/SR universal Part-No.: ZD11-10000 with built-in partitions ...
  • Page 113 13 Delivery variants and accessories Probe Systems Hand probe Part-No.: ZS14-10100 900 mm long, divisible  with fine dust filter  probe hose 1 m will be re-  quired Flexible hand probe (⊗) Part-No.: ZS32-10000 360 mm long, flexible tip ...
  • Page 114 13 Delivery variants and accessories Pinpointing probe (⊗) Part-No.: ZS03-10300 345 mm probe tip  for localizing  with probe filter inset  probe hose 1 m will be re-  quired Trench probe (⊗) Part-No.: ZS03-10400 345 mm probe tip ...
  • Page 115  quick connect Testing Technique Test set SPE VOL Part-No.: PP01-90101 for mobile vehicle mounting,  connection for all SEWERIN  test gas cans, flow-rate control, release key and connecting hose Test gas cans (⊗) for testing display accuracy ...
  • Page 116 100 – 150 bar Test manometer for test gas cans  manometer 0 – 16 bar with  valve adapter for SEWERIN test gas cans Carbon dioxide filter to „filter-out“ CO shares within  test gas samples, with Rectus plug connections ...

  • Page 117: Appendix

    Appendix...
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  • Page 127: Declaration Of Conformity

    Konformitätserklärung / Declaration of Conformity Gerätebezeichnung: tragbares, batteriebetriebenes Gasmeßgerät Type of Product: portable battery-operated gas measuring device Geräte-Typ: EX-TEC Combi Product Name: Fabrikations-Nr.: 045 xx xxxx Fabr.No.: Hiermit erklären wir, daß oben genanntes Produkt mit der / den folgenden Norm(en) oder normativen Dokument(en) übereinstimmt.

  • Page 128: Inspection Protocols

    Appendix INSPECTION PROTOCOL EX-TEC® Combi S CO Sensors: Serial Number: (e.g.: 045 11 0001) 25.04.2005 1.0 Device status 1.1 - status correct (e. g.: Y / N) 1.2 - fine dust filter correct (e. g.: Y / N) 1.3 - remaining operating hours (e. g.: 5 h) 2.0 Pump test 2.1 - low pressure >...
  • Page 129 Appendix 8.0 Alarm function 8.1 optical alarm (e.g.: Y / N) 8.2 audible alarm (e.g.: Y / N) 9.0 Observations - housing broken - adjustment, repair - factory inspection - or the like 10.0 Test - day - month - year - signature...
  • Page 130 Appendix INSPECTION PROTOCOL EX-TEC® Combi S CO Sensors: Serial Number: (e.g.: 045 11 0001) 25.04.2005 1.0 Device status 1.1 - status correct (e. g.: Y / N) 1.2 - fine dust filter correct (e. g.: Y / N) 1.3 - remaining operating hours (e. g.: 5 h) 2.0 Pump test 2.1 - low pressure >...
  • Page 131 Appendix 8.0 Alarm function 8.1 optical alarm (e.g.: Y / N) 8.2 audible alarm (e.g.: Y / N) 9.0 Observations - housing broken - adjustment, repair - factory inspection - or the like 10.0 Test - day - month - year - signature...
  • Page 132 Appendix INSPECTION PROTOCOL EX-TEC® Combi CO2 O S CO Sensors: Serial Number: (e.g.: 045 11 0001) 25.04.2005 1.0 Device status 1.1 - status correct (e. g.: Y / N) 1.2 - fine dust filter correct (e. g.: Y / N) 1.3 - remaining operating hours (e.
  • Page 133 Appendix 8.0 Alarm function 8.1 optical alarm (e.g.: Y / N) 8.2 audible alarm (e.g.: Y / N) 9.0 Observations - housing broken - adjustment, repair - factory inspection - or the like 10.0 Test - day - month - year - signature...
  • Page 134 Hermann Sewerin GmbH Robert-Bosch-Straße 3 · 33334 Gütersloh · Germany Telefon +49 5241 934-0 · Telefax +49 5241 934-444 www.sewerin.com · info@sewerin.com...

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