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 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
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Sensor type |
Continuous diffusion / adsorption CHEMFET Solid State Metal Oxide Semiconductor |
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Sensor life |
From 5 to 10 years typical |
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Measuring range |
0-20 ppm, 0-50 ppm, 0-100 ppm |
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Precision / Repeatability |
± 10% of reading or ± 2 ppm (greater of) |
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Response / compensation time |
T50 <30 seconds T90 <60 seconds |
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Outputs |
Linear 4-20 mA DC RS-485 MODBUS-RTU 3 relays (alarm 1, alarm 2, & fault) Classified contacts 5 amps |
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Electrical classification |
Explosion CSA and US (NRTL) Class I, Division 1, Groups B, C, D (Tamb = -40 ° C to + 75 ° C) Class I, Zone 1, Group IIB + H2 ATEX EEx d IIB + H2 T4 (Tamb = -40 ° C to + 60 ° C) |
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Performance Approvals |
ISA 92.0.01 Part I-1998; H2S performance requirements |
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Security approvals |
CSA / NRTL (US OSHA certified) ATEX CE marking SILED rating FMEDA |
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Protection against ingress |
NEMA 4X, IP66 |
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Warranty |
Plug-in detector - 10 years conditional Transmitter - 2 years |
