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detcon inc.

Detcon MicroSafe

™

TP-524C Hydrogen Sulfide Sensor

This manual covers the following ranges: 0-20 PPM, 0-50 PPM, and 0-100 PPM

Operator’s Installation & Instruction Manual

May 09, 2012 • Document #2297 • Version 2.5

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Содержание MicroSafe TP-524C

Страница 1: ...n inc Detcon MicroSafe TP 524C Hydrogen Sulfide Sensor This manual covers the following ranges 0 20 PPM 0 50 PPM and 0 100 PPM Operator s Installation Instruction Manual May 09 2012 Document 2297 Version 2 5 ...

Страница 2: ...t up 3 7 Calibration 3 8 Status of Programming Software Version Calibration Level Heater Voltage Range and Sensor Life 3 9 Program Features 3 10 Display Contrast Adjust 3 11 Trouble Shooting Guide 3 12 Spare Parts List 3 13 Warranty 3 14 Service Policy 3 15 Software Flow Chart 3 16 Revision Log Detcon Model TP 524C Hydrogen Sulfide Sensor PG 2 ...

Страница 3: ...nu driven features via a hand held programming magnet 3 0 1 Sensor Technology The sensor technology is a patented solid state metal oxide semiconductor The sensor consists of two thin films a temperature sensitive heater film and an hydrogen sulfide sensitive sensor film Both films are deposited on a sili con microchip by vacuum deposition The heater film elevates the operating temperature of the ...

Страница 4: ...put 3 0 3 Base Connector Board The base connector board is mounted in the explosion proof enclosure and includes the mating connector for the control circuit reverse input and secondary transient suppression input filter and lugless terminals for field wiring 3 0 4 Explosion Proof Enclosure Detcon Model TP 524C Hydrogen Sulfide Sensor PG 4 detcon inc Program Switch 2 FLT CAL MicroSafe H2S Gas Sens...

Страница 5: ...ons 3 2 APPLICATION Model TP 524C MicroSafe sensors are designed to detect and monitor hydrogen sulfide gas in ambient air in the range of 0 100 parts per million The sensor can also be programmed to operate in the range 0 20 ppm or 0 50 ppm Minimum sensitivity and scale resolution is 1 ppm Operating temperature range is 40 F to 175 F While the sen sor is capable of operating outside these tempera...

Страница 6: ...ace plate The two switches are referred to as PGM 1 and PGM 2 The menu list consists of 3 items which include sub menus as indicated below Note see the last page of this manual for a complete software flow chart 01 Normal Operation a Current Status 02 Calibration Mode a Span 03 Program Menu a View Program Status b Set Calibration Level c Set Heater Level d Set Range e Utility Menu 3 4 1 Normal Ope...

Страница 7: ...t X Value is an adjustment for linearization factory setting only Set Filter Mode is a selection of filtering modes factory setting only 3 5 INSTALLATION Optimum performance of ambient air gas sensor devices is directly relative to proper location and installation practice 3 5 1 Field Wiring Table 4 20 mA output Detcon Model TP 524C solid state H2S sensor assemblies require three conductor connect...

Страница 8: ...lity engi neers with experience in similar processes Ventilation Normal ventilation or prevailing wind conditions can dictate efficient location of gas sensors in a manner where the migration of gas clouds is quickly detected Personnel Exposure The undetected migration of gas clouds should not be allowed to approach concentrated per sonnel areas such as control rooms maintenance or warehouse build...

Страница 9: ...g to the sensor base connector board in accordance with the detail shown in Figure 3 d Replace the plug in transmitter circuit and replace the junction box cover 3 5 6 Remote Mounting Applications Some sensor mounting applications require that the gas sensor head be remotely mounted away from the sensor transmitter This is usually true in instances where the gas sensor head must be mounted in a lo...

Страница 10: ...ion 3 6 2 then proceed with the initial operation tests below section 3 6 1 Note 3 The 4 20mA output signal will be held at 4mA for the first two minutes after power up 3 6 1 Initial Operational Tests Initial Operational Tests After a warm up period at least 15 minutes has been allowed for the sensor should be checked to verify sensitivity to H2S gas Material Requirements Detcon PN 6038 Threaded C...

Страница 11: ...s or automati cally return to the programming menu in 30 seconds h Exit back to normal operation by holding the programming magnet over PGM 2 for 3 seconds or automati cally return to normal operation in 30 seconds i Replace the junction box cover on the remote sensor enclosure Heater voltage adjustment is complete 3 6 3 Programming Magnet Operating Instructions Operator interface to MicroSafe gas...

Страница 12: ... over PGM1 for 3 seconds or automati cally return to the programming menu in 30 seconds e Exit back to normal operation by holding the programming magnet over PGM 2 for 3 seconds or automati cally return to normal operation in 30 seconds NOTE When switching between ranges remember to readjust your Cal Level setting if necessary see section 3 7 2 3 6 5 Setting Heater Voltage The Detcon TP524C H2S s...

Страница 13: ... and 50 of full scale range However any alternate span gas concentration value must be programmed via the calibration gas level menu before proceeding with span calibration Follow the instructions below for span calibration a Verify the current calibration gas level setting as indicated by the programming status menu To do this follow the instructions in section 3 8 and make note of the setting fo...

Страница 14: ...ignal reports a 0 mA value to indicate there is a Fault condition that needs to be corrected 3 7 3 Additional Notes 1 Upon entering the calibration menu the 4 20 mA signal drops to 2 mA and is held at this level until the pro gram returns to normal operation 2 If during calibration the sensor circuitry is unable to attain the proper span adjustment the sensor will enter into one of the calibration...

Страница 15: ...ange 20 50 or 100 ppm it will cause the display to flash 20 50 100 PPM H2S on and off The 4 20 mA signal will report a 20 mA output Zero Fault If the sensor does not clear to 10 of range in 5 minutes after completing a span calibration the sensor will enter into a calibration fault mode which will cause the display to alternate between ZERO FAULT and the sen sors current reading The Fault LED will...

Страница 16: ...st remove the enclosure cover and use a jewelers screwdriver to turn the contrast adjust screw located beneath the metallic face plate The adjustment location is marked CONTRAST See figure 6 for location 3 11 TROUBLE SHOOTING GUIDE SENSOR FAULTS Open Heater Verify resistance between black and white wires using ohm meter with the sensor unplugged and at room tempera ture Heater Film s normal readin...

Страница 17: ...emperature 2 If poor contrast adjust contrast pot accordingly Nothing Displayed Transmitter not Responding 1 Verify condulet has no accumulated water or abnormal corrosion 2 Verify required DC power is applied to correct terminals 3 Swap with a known good transmitter to determine if transmitter is faulty Bad 4 20 mA output or RS485 Output 1 Check that wiring is connected to correct terminal output...

Страница 18: ...hipping point is FOB the Detcon factory Net payment is due within 30 days of invoice Detcon Inc reserves the right to refund the original purchase price in lieu of sensor replacement 3 14 SERVICE POLICY Detcon Inc as manufacturer warrants under intended normal use each new MicroSafe plug in control circuit to be free from defects in material and workmanship for a period of two years from the date ...

Страница 19: ...2 3 SET CAL LEVEL PGM2 3 PGM2 3 SENSOR LIFE PGM1 3 PGM2 30 SET X VALUE UTILITY MENU CAL LEVEL PPM HEATER VDC PGM1 M PGM2 M PGM1 3 INC DEC PGM1 3 PGM2 M PGM2 3 HEATER VDC SET HEATER VOLTS PGM1 M PGM2 M PGM1 3 INC DEC PGM1 3 PGM2 M PGM2 3 RANGE 0 PPM SET RANGE RANGE 0 PPM PGM1 3 PGM2 M PGM2 3 SET FILTER PGM1 3 PGM2 M PGM2 3 PGM1 M PGM2 M PGM1 3 INC DEC X PGM1 M PGM2 M PGM1 3 INC DEC FILTER www detco...

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