Data sheet

Model TP-624D

Detcon The TP-624D is a "smart" gas detection sensor designed to detect and monitor H2S in the air over a range of 0 to 100 ppm using proprietary metal oxide semiconductor technology.

This innovative design offers several benefits, including longer sensor life and better temperature and humidity performance.

The TP-624D is equipped with Detcon's MicroSafe ™ intelligent electronics, non-intrusive operator interface, and comprehensive fault diagnosis. The sensor transmitter has an advanced universal design that fits all existing Detos MOS H2S detectors over 20 years old.

The sensor assembly includes a MOS sensor in a stainless steel housing, a basic connection board, an explosion-proof enclosure (available in aluminum or stainless steel), a pluggable control emitter circuit and a splashguard with integrated gauge port. The packaging is explosion-proof (Class I, Division 1, Groups B, C, D).

The TP-624D is equipped with a standard 4-20 mA analog current signal equivalent to the sensor sensing range, RS-485 serial communication port, 3 alarm relays, single operator remote calibration, auto-adjustable zero and range and LED indicators for fault, alarm and calibration status.

Detcon's Solid State MOS Sensor has an infinite life and is backed by a 10-year industry leading conditional warranty

  • Certified Performance to ISA 92.0.01, Part I-1998: Performance Requirements for H2S

  • CSA-US approved for Class I, Division 1, Groups B, C and D

  • Transmitter design is suitable for all existing 20 year old Detos MOS H2S detectors

  • Compatible with PLCs, SCADA, DCS, via 0-20 mA, and / or RS-485, and / or alarm relays

  • Sensor status and parameters accessible via RS-485 (Modbus ™)

  • Standard programmable relays (two alarms plus fault)

  • Simple menu driven calibration - less than 3 minutes

  • LED display and LED indicators for FAULT and CAL status

  • Pluggable field replaceable transmitter

  • Similar response to electrochemical sensors: T-50 <30 sec., T-80 <60 sec.

  • VERY wide operating temperature range: -40 ° C to + 75 ° C

  • 10-year warranty of the conditional sensor

  • Direct response constant temperature control

  • Resistant to exposure to high concentrations of H2S and other acid gases

  • Impervious to high humidity environments in powered and unpowered mode

  • Extended fault diagnosis

Sensor life

From 5 to 10 years typical

Measuring range

0-20 ppm, 0-50 ppm, 0-100 ppm

Precision / Repeatability

± 10% of reading or ± 2 ppm (greater of)

Response / compensation time

T50 <30 seconds

T90 <60 seconds

Outputs

Linear 4-20 mA DC

RS-485 MODBUS-RTU

3 relays (alarm 1, alarm 2, & fault)

Classified contacts 5 amps