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Model S214

Hydrogen Sulfide Gas

Enhanced Smart Sensor

(Single Point Calibration)

The information and technical data disclosed in this

document may be used and disseminated only for the

purposes and to the extent specifically authorized in

writing by General Monitors.

Instruction Manual

05/97

General Monitors reserves the right to change

published specifications and designs without prior

notice.

Part No

MANFL3100/1

Revision

E/11-99

Содержание S214

Страница 1: ...disclosed in this document may be used and disseminated only for the purposes and to the extent specifically authorized in writing by General Monitors Instruction Manual 05 97 General Monitors reserves the right to change published specifications and designs without prior notice Part No MANFL3100 1 Revision E 11 99 ...

Страница 2: ... accident improper installation or application or on which the original identification marks have been removed or altered Except for the express warranty stated above General Monitors disclaims all warranties with regard to the products sold including all implied warranties of merchantability and fitness and the express warranties stated herein are in lieu of all obligations or liabilities on the ...

Страница 3: ...he X P Integrity 4 0 Operation 4 1 Calibration 4 2 Calibration Equipment 4 3 Test Gas Mode 4 4 Digital Display Codes 4 5 Fault Codes Their Remedies 5 0 Appendix 5 1 Specifications 5 1 1 System Specifications 5 1 2 Mechanical Specifications 5 1 3 Electrical Specifications 5 1 4 Environmental Specifications 5 2 Engineering Documentation 5 2 1 Termination Outline Drawings 5 2 2 Termination Drawing CE...

Страница 4: ...ength Diagram Figure 10 Terminal Block Operation Drawing Figure 11 4 20mA Output Signal Connections Figure 12 Input Power Connections Figure 13 GMI Logo and Display Window Drawing Figure 14 Diagram Automatic Calibration Sequence Figure 15 CAL Bottle Ampoule Diagram Figure 16 Diagram of Test Gas Mode Figure 17 Termination Drawing S214 Figure 18 Outline and Dimensional Drawing S214 Figure 19 Termina...

Страница 5: ... processes input signals from the sensor and provides outputs in the form of display codes and an analog signal One Person Single Point Calibration initi ate the calibration sequence with a magnet apply the gas and wait for the display to indi cate that the unit has completed the calibra tion No tools or adjustments are required 2 Digit Display indicates gas concentrations fault codes and calibrat...

Страница 6: ...2 ...

Страница 7: ...plified by the input circuit figure 2 This amplified signal is fed to an Analog to Digital A D Converter converted to a digital signal and sent to the microprocessor to be processed The process of H2S adsorbing onto the MOS film is most effective at an elevated temperature On the outer edge of the substrate is a heater ring figure 2 The temperature of this heater ring is measured with a thermistor...

Страница 8: ... output to the display and the 4 20mA current generator When the CAL Switch is activated the MPU allows the user to choose between the Calibration and the Test Gas modes While the unit is in one of these modes the MPU will fix the 4 20mA output signal to 1 5mA 0mA is signal optional for the calibration mode only figure 4 figure 5 Calibration Mode When the unit is placed in this mode the MPU will l...

Страница 9: ...proximity to radio transmitters or similar equipment l Locate the Model S214 where prevailing air currents contain the maximum concentration of gas l Locate the Model S214 near possible sources of gas leaks l Observe the Model S214 s temperature specification and locate the unit away from concentrated sources of heat l Sensor Assemblies should be mounted in an area that is as free from wind dust w...

Страница 10: ...nitors recommends that the complete system including all alarm circuitry be tested at least annually The overall and mounting dimensions for the Model S214 figures 6 18 should be used when making installation determinations A complete list of the mechanical specifications can be found in the Appendix section 5 1 2 See pages 19 and 20 for dimensions and outline drawing To prevent possible corrosion...

Страница 11: ...body Some typical items to check during maintenance examinations are l The sensor mounting to see it is secure l The sensor screen to see it is clear of oil water dust or paint which might clog it l The cable connections for tightness and possible damage l All sensor placements are up to date with the layout of the plant e g modifications to the plant l The complete system to see it has a back up ...

Страница 12: ... be used if it is carefully stripped figure 9 figure 9 To connect wiring to the terminal block insert a screw driver into the orange tab and press down figure 10 opening the terminal Insert the wire into the terminal and release the orange tab clamping the wire in the terminal Check the connection by GENTLY tugging the wire to ensure it is locked in A 4 to 20mA output signal is provided by the Mod...

Страница 13: ... Trip Amplifier Module with a PS002 The following General Monitors Modules provide power connections for the Model S214 but need a customer supplied DC source see Appendix section 5 4 l DT210 Readout Relay Display Module without Power Supply Relay Module l DT220 Dual Channel Display Module l TA202A Trip Amplifier Module without a PS002 Since the Model S214 is designed to operate continuously a pow...

Страница 14: ... the lid and the housing is effected If power is left on when removing or loosening the cover bolts on the Model S214 it will be necessary to de classify the area When replacing the cover the gap between the lid and the housing should be less than 0015 inch 038mm This can be verified by tightening the cover bolts to a torque setting of 50 inch pounds or by using a feeler gauge to ensure the gap be...

Страница 15: ... sensor head sensors accidentally being painted over etc see Appendix 5 5 NOTE A calibration check consists of ap plying a 50 of full scale concentration of gas to the sensor and observing the reading on the Model S214 General Monitors recommends that a calibra tion schedule be established and followed A log book should also be kept showing calibra tion dates and dates of sensor replacement Calibr...

Страница 16: ... fault code and the analog output current will drop to zero The Model S214 will indicate an F1 if the sensor is too responsive an F3 if the sensor is not sensitive enough an F2 if the total calibration interval has been exceeded or an F7 if the calibration values were not prop erly stored in the NOVRAM Other fault codes are explained in section 4 5 Fault Codes Their Remedies NOTE If the unit fails...

Страница 17: ...e value of the gas concentration will be indicated by the flashing display in two to three minutes Note applied gas concentration must be 10 of full scale l When the reading has stabilized and the test is complete remove the gas and the unit will return to normal operation when the concentration drops below 5 of full scale figure 16 If the Model S214 is placed in the test gas mode and no gas is ap...

Страница 18: ...n the display if a Fault condition occurs For more information about these codes refer to section 4 5 Fault Codes Their Remedies or flashing This indicates that the concentration of hydro gen sulfide gas exceeds the scale range of the display over range When the unit is in the normal operating mode the display will indicate the presence of hydrogen sulfide gas in parts per million ppm The ranges o...

Страница 19: ...ur if the unit is placed in the calibration mode and the sensor has not re sponded within twelve minutes F3 Low response during calibration This fault may occur for either of the follow ing reasons l Incorrect gas concentration If the applied gas concentration is too low l Faulty sensor The sensor may have suffered a loss of sensitivity due to contamination Take the appropriate action l Make sure ...

Страница 20: ... to verify the calibration parameter just written to the non volatile memory fails The usual cause of this is electrical interference corrupting the data although on rare occa sions it may indicate a problem within the electronics module Place the magnet over the GMI Logo and ini tiate another calibration F8 NOT USED AT THIS TIME F9 Calibration check period exceeded If the Model S214 is left in th...

Страница 21: ...stor Performance Standard General Monitors Model S214 Smart Sensor meets the ISA S12 15 Part I Performance Standard for Hydrogen Sulfide Gas Detection Instruments when the recommended intial power up calibration sequences are performed Approvals CSA Certified FMRC Approved Cenelec certified SS arrestor sensors CE Mark approval against EMC Directive and Product Safety 5 1 2 Mechanical Specification...

Страница 22: ...ervatively shorter than the maximum given values Input Power 24VDC 300mA nom 1A during SU 20 to 30VDC range Output Current 300 ohms max Signal Range 0 to 22mA Malfunction 0 0mA Calibration 1 5mA 0mA optional Test Gas Mode 1 5mA always Detection Range 4 to 20mA Over Range 20 to 22mA Electrical Classification Class I Division 1 Groups B C D NEMA 4x rated 5 1 4 Environmental Specifications Operating ...

Страница 23: ...Appendix 5 2 Engineering Documentation 5 2 1 Termination Outline Drawings GENERAL MONITORS Model S214 19 figure 17 ...

Страница 24: ...Appendix 20 GENERAL MONITORS Model S214 figure 18 ...

Страница 25: ...Appendix 5 2 2 Termination Drawing CE Marked Units GENERAL MONITORS Model S214 21 figure 19 ...

Страница 26: ... CSA FM stan dard 5 50 ppm Scale CSA FM Hydrogen Sulfide Sensor see section 5 5 00 No Sensor 01 50445 1 100ppm standard 02 50445 5 50ppm 03 50445 9 20ppm 04 50448 1 100ppm 05 50448 5 50ppm 06 50448 9 20ppm 07 50454 1 100ppm 08 50454 5 50ppm 09 50454 9 20ppm 10 50457 1 100ppm 11 50457 5 50ppm 12 50457 9 20ppm 13 Other Consult Factory Active Channels 0 Without Sensor 1 With Sensor standard GENERAL M...

Страница 27: ...Aluminum Body H2S Gas Specific MOS Sensor 0 to 100 ppm l 50445 5 Aluminum Body H2S Gas Specific MOS Sensor 0 to 50 ppm l 50445 9 Aluminum Body H2S Gas Specific MOS Sensor 0 to 20 ppm l 50448 1 Stainless Steel Body H2S Gas Specific MOS Sensor 0 to 100 ppm l 50448 5 Stainless Steel Body H2S Gas Specific MOS Sensor 0 to 50 ppm l 50448 9 Stainless Steel Body H2S Gas Specific MOS Sensor 0 to 20 ppm The...

Страница 28: ...ord date and reading of calibration check Repeat after 14 days if reading deviates more than 20 or 4ppm whichever is greater Otherwise go to step 5 Date Reading Date Reading Date Reading 5 30 day calibration check Record date and reading of calibration check Repeat after 30 days if reading deviates more than 20 or 4ppm whichever is greater Otherwise go to step 6 Date Reading Date Reading Date Read...

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