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Teledyne Detcon PI-700 Universal VOC Gas Sensor

SKU: PI-700

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Model PI-700 is a non-intrusive “Smart” sensor that use photo-ionization detector technology to monitor VOC gases over ranges from 0-10 ppm to 0-5,000 ppm. In the PI-700 sensor design, Detcon has successfully converted the sensitive laboratory style PID technology into a rugged, environmentally insensitive, and long-life industrial gas sensor. The plug-in, field replaceable detector features over-sized gold-plated connections that help prevent corrosion. The PI-700’s rugged framework includes an electro-polished 316 stainless steel housing with fully encapsulated electronics and dual layer surge protection. This innovative design virtually eliminates sensor failure due to water ingress, corrosion, vibration, and transient spikes. A primary feature of the Model PI-700 is embedded intuitive software that simplifies operator interface by guiding the user through routine calibration, configuration, and fault diagnostic functions using a built-in alpha/numeric display. The Model PI-700 is equipped with standard analog 4-20mA, and Modbus™ RS-485 outputs. Among its unique features 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 PID sensors have a long shelf life and are supported by an industry leading warranty.

Order Guide Specify junction box options (below)

PN 967-P15520-010 – PI-700-VOC Sensor Assembly (no junction box)
PN 967-P11520-010 – PI-700-VOC Sensor Assembly with Aluminum Junction Box
PN 967-P14520-010 – PI-700-VOC Sensor Assembly with 316 SS Junction Box
PN 967-P25520-01K – PI-701-VOC Sensor Assembly (no junction box)
PN 967-P21520-01K – PI-701-VOC Sensor Assembly with Aluminum Junction Box
PN 967-P24520-01K – PI-701-VOC Sensor Assembly with 316 SS Junction Box
PN 967-P15520-0X5 – PI-700-VOC Special Low Range Sensor Assembly with 316 SS Junction Box


  • Pharmaceutical industry
  • Power plants
  • Chemical industry
  • Air quality
  • Refineries and petrochemical plants
  • Solvent recovery systems
  • Waste water treatment plants
  • Marine and off-shore oil wells
  • Pulp and paper industry
  • Painting and coating operations


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


Sensor Type
Continuous diffusion/adsorption
Photo Ionization Detector (PID)
Plug-in replaceable intelligent type (with replacement lamp)

Sensor Life
2 years typical

Measurement Range
Gas Dependent, ranges as low as 0-10 ppm
or as high as 0-5,000ppm (consult Detcon)

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

Response Time
T50 <30 seconds; T90 <60 seconds

Linear 4-20 mA DC

Electrical Classification
Explosion proof
Class I, Division 1, Groups B, C, D (Tamb = -20°C to +50°C)
Class I, Zone 1, Group IIB+H2
II 2 G Ex d ib IIB + H2 T4 Gb (Tamb = -20°C to +50°C)

Ingress Protection

Safety Approvals
CE Marking



Operating Temperature Range
-4°F to +122°F; -20°C to +50°C

Storage Temperature Range
-4°F to +122°F; -20°C to +50°C

Operating Humidity Range
0-100% RH non-condensing


7”H x 2.2” Dia.; 178mmH x 65mm Dia. (sensor assembly only)
11”H x 6.1”W x 3.75”D; 280mmH x 155mmW x 96mmD (with junction box)
Mounting holes (J-box) 5.5”; 140mm center to center

2 lbs; 0.907kg (sensor only)
6 lbs; 2.72kg (w/aluminum j-box)
9 lbs; 4.08kg (w/stainless steel j-box)


Power Input
11-30 VDC

Power Consumption
Maximum = 65mA (1.6 watts)

Inrush Current
1.67A @ 24V

RFI/EMI Protection
Complies with EN50270

Analog Output
Linear 4-20mA DC (1,000 ohms max loop load @ 24VDC)
0mA All Fault Diagnostics
2mA In-Calibration
4-20mA 0-100% full-scale
22mA 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,
Set-up Options, and Fault Reporting

Faults Monitored
Loop, Input Voltage,
Zero, Missing Sensor,
Processor, Memory, Calibration

Cable Requirements
3-wire shielded cable
Maximum distance is 13,300 feet with 14 AWG
Serial Output
2-wire twisted-pair shielded cable specifically for use with RS-485 installations
Maximum distance is 4,000 feet to last sensor

I/O Protection
Over-voltage, Miswiring, EMI/RFI Immunity


Remote Alarm Module (Remote Operation and 2 Alarm Relays plus Fault)
Hart Integration Module (Hart Communication Protocol version 7.0, HART Registered)

Product Data Sheet


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