Detcon PI-700 VOC Sensor

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Detcon PI-700 VOC Sensor

The Detcon TP-700 by Teledyne is a non-intrusive, “Smart” sensor designed to detect and monitor H2S in the air over a 0-100 ppm range, utilising proprietary solid-state metal oxide semiconductor technology. The plug-in, field-replaceable detector features oversized gold-plated connections that help prevent corrosion.

The TP-700’s rugged framework features an electro-polished 316 stainless steel housing, fully encapsulated electronics, and dual-layer surge protection. This innovative design eliminates sensor failure due to water ingress, corrosion, vibration, and transient spikes. A primary feature is embedded intuitive software that simplifies the operator interface by guiding the user through routine calibration, configuration, and fault diagnostic functions using a built-in alpha/numeric display.

The Model TP-700 has standard analogue 4-20mA and Modbus RS-485 outputs. Its unique feature is a wireless option that can be used with Detcon’s SmartWireless product line. Additional integration options include a Remote Alarm Module (RAM) and HART. Detcon’s solid-state MOS H2S gas sensor has an infinite shelf life and a 10-year conditional warranty.

Applications include oil and Gas drilling and production sites, Refining and Petrochemical facilities, Pulp and Paper Mills, and Wastewater Treatment Plants.

Features

Failsafe User-Friendly Interface

  • LED Display (With Antiglare Cover)
  • Full-Text Display Method
  • Non-intrusive Interface
  • Auto Zero/Auto Span
  • Pre-emptive Fault Diagnostics

Environmentally Bulletproof

  • Electropolished 316SS Construction
  • 100% Epoxy Encapsulated Circuitry
  • Bulletproof I/O Protection
  • Water-Proof, Corrosion-Proof
  • Vibration-Proof

Modular and Serviceable

  • Modular Design
  • Plug and Play Components
  • Quick Thread Release (For Sensor Replacement)
  • Integral Calibration Port

Order Information

700 Series MOS Hydrogen Sulfide Gas Detection Sensor Assemblies (Semiconductor Versions)

Part Number Description
967-015520-100 TP-700 Solid State MOS H2S Sensor Assembly (no condulet)
967-011520-100 TP-700 Solid State MOS H2S Gas Sensor Assembly (aluminium condulet)
967-014520-100 TP-700 Solid State MOS H2S Gas Sensor Assembly (316SS condulet)
9H7-011520-100 TP-700 MOS H2S Gas Sensor with HART bridge Assembly (aluminium condulet)
9H7-014520-100 TP-700 MOS H2S Gas Sensor with HART bridge Assembly (316SS condulet)
9R7-011520-100 TP-700 MOS H2S Gas Sensor with RAM Assembly (aluminium condulet)
9R7-014520-100 TP-700 MOS H2S Gas Sensor with RAM Assembly (316SS condulet)
9K7-011520-100 TP-700 MOS H2S Gas Sensor with HART-RAM Assembly (aluminium condulet)
9K7-014520-100 TP-700 MOS H2S Gas Sensor with HART-RAM Assembly (316SS condulet)

Model Series 700 Integration Modules in Enclosures

Certification: Class 1; Div 1; Groups B, C, D – Zone I Group IIB+H2

Part Number Description
975-70000A-00A Remote Control / Alarm Relay Module in Aluminium Enclosure
975-70000A-00S Remote Control / Alarm Relay Module in 316SS Enclosure
975-70000H-00A Remote Control / Alarm Relay Module with HART in Aluminium Enclosure
975-70000H-00S Remote Control / Alarm Relay Module with HART in 316SS Enclosure
975-70005H-00A HART Integration Module in Aluminium Enclosure
975-70005H-00S HART Integration Module in 316SS Enclosure
System Specifications
Sensor Type Continuous diffusion/adsorption CHEMFET Solid State Metal Oxide Semiconductor sensor.
Plug-in, field-replaceable design.
Sensor Life 5 to 10 years typical.
Measurement Range 0–20 ppm, 0–50 ppm, 0–100 ppm.
Accuracy / Repeatability ±10% of reading or ±2 ppm (whichever is greater).
Response / Clearing Time T50 < 30 seconds; T80 < 60 seconds.
Outputs Linear 4-20 mA DC
RS-485 Modbus RTU
Electrical Classification CSA & US (NRTL):
Class I, Division 1, Groups B, C, D
(Tamb = -40°C to +75°C)
Class I, Zone 1, Group IIB+H₂

ATEX:
II 2 G Ex d IIB + H₂ T4 Gb
(Tamb = -40°C to +70°C)
Ingress Protection NEMA 4X, IP66.
Safety Approvals cCSAus
Complies with ISA 92.01 Part 1-1998 (Performance Requirements for H₂S)
ATEX
CE Marking
SIL2 Certified to IEC 61508
Warranty Plug-in Detector – 10-Year Conditional Warranty
Transmitter – 2 Years
Environmental Specifications
Operating Temperature Range -40°F to +167°F (-40°C to +75°C).
Storage Temperature Range -31°F to +131°F (-35°C to +55°C).
Operating Humidity Range 5–100% RH non-condensing.
Operating Pressure Range Atmospheric ±10%.
Mechanical Specifications
Dimensions Sensor Assembly: 7" H × 2.2" Dia. (178 mm H × 65 mm Dia.)
With Junction Box: 11" H × 6.1" W × 3.75" D (280 mm H × 155 mm W × 96 mm D)
Mounting Hole Centres (J-Box): 5.5" (140 mm)
Weight Sensor Only: 2 lbs (0.907 kg)
With Aluminum Junction Box: 6 lbs (2.72 kg)
With Stainless Steel Junction Box: 9 lbs (4.08 kg)
Electrical Specifications
Power Input 11–30 VDC.
Power Consumption Normal Operation: 68 mA (<1.7 Watts)
Maximum: 85 mA (2 Watts)
Inrush Current 1.0 A @ 24 VDC.
RFI / EMI Protection Complies with EN50270.
Analog Output Linear 4–20 mA DC (1,000 Ω maximum loop load @ 24 VDC)
0 mA – All Fault Diagnostics
2 mA – Calibration Mode
4–20 mA – 0–100% Full Scale
22 mA – Over-range Condition
Serial RS-485 Output RS-485 Modbus™ RTU.
Baud Rate 9600 BPS (9600, N, 8, 1 Half Duplex).
Status Indicators 4-digit LED display with gas concentration.
Full-script menu prompts for AutoSpan, Setup Options, and Fault Reporting.
Faults Monitored Heater, Loop, Input Voltage, Sensor, Processor, Memory, and Calibration.
Cable Requirements Power / Analog:
3-wire shielded cable.
Maximum distance: 13,300 ft using 14 AWG cable.

Serial Output:
2-wire twisted-pair shielded cable specifically for RS-485 installations.
Maximum distance: 4,000 ft to the last sensor.
I/O Protection Over-voltage protection, miswiring protection, and EMI/RFI immunity.

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