Detcon TP-624C - Manual (Page 23)

6. Check sensor lot # and report to Detcon.
7. Check area for presence of reducing gases such as Cl2 and ozone which may cause low readings.
Unstable output/ Sudden spiking
Unstable power supply, Inadequate grounding, Inadequate RFI protection.
1. Verify Power source.
2. Contact Detcon to optimize shielding and grounding.
3. Add RFI protection accessory.
Nuisance Alarms
1. Check condulet for accumulated water and abnormal corrosion.
If Nuisance alarms happening at night suspect condensation in condulet.
2. Add/Replace Detcon Condensation Prevention Packet P/N 960-202200-000
Memory or Error reports
1. Reinitialize Sensor - Unplug transmitter, replug transmitter then swipe magnet over PGM 1 in the f irst 3 seconds.
This will clear the processor and recover from error state. Remember to put in all customer settings for range, alarm
and cal gas level after re-initialization.
Non readable display
1. If blue background, install sunshade to reduce temperature.
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 outputs.
Swap with a known-good transmitter to determine if transmitter is faulty.
3.14 S PARE P ARTS L IST
600-500000-000 Sensor rain shield
600-610000-000 Sensor splash guard
943-000006-038 Threaded Calibration Adapter
399-800000-000 H2S sensor in stainless steel housing
926-015500-100 TP-624C Plug-in control circuit
500-001794-004 Connector board
327-000000-000 Programming Magnet
897-850800-000 3 port enclosure less cover
897-850700-000 Enclosure glass lens cover
960-202200-000 Condensation prevention packet (replace annually).
985-241100-321 In-Line Humidifying Tube
943-020000-000 Span Gas Kit: Includes calibration adapter, In-Line Humidifying Tube, 200 ml/m span
gas regulator, and carrying case. Does not include span gas.
942-010112-010 Span gas bottle containing 58 liters 10ppm H2S in air (operating range dependent).
942-010112-020 Span gas bottle containing 58 liters 20ppm H2S in air (operating range dependent).
942-010112-025 Span gas bottle containing 58 liters 25ppm H2S in air (operating range dependent).
942-010112-050 Span gas bottle containing 58 liters 50ppm H2S in air (operating range dependent).
943-090005-502 200 ml/m regulator for span gas bottle
Detcon Model TP-624C Hydrogen Sulfide Sensor PG.23