OI-6000 Explosion Proof Wire Powered Sensor Assembly With GEN II Radio


The Otis Instruments OI-6000 Series Ambient Air Hazardous Gas Detector is a versatile assembly that uses an electrochemical, infrared, catalytic bead, or PID sensor element to detect a variety of gases. Wired power (12 to 35 VDC) with 4-20 mA analog and RS-485 Modbus outputs standard. Magnetic switches allow for non-intrusive calibration while in the field as well as full system settings and diagnostics while remaining Class I Division 1 Groups C & D Certified.

Part Number Formula: OI-6000-[Sensor Type]-[Gas]-[Radio Option]-X-O





Sensor Type: Electrochemical, Infrared, Catalytic Bead, or Photo Ionization Detector

Power Voltage: Wired Power (3-Wire) 12 to 35 VDC

Power Draw: 2 Watts Maximum


  • Power Electromagnetic Interference (EMI) Filter

  • 4-20 mA Surge Suppression

  • RS-485 Surge Suppression

Display Screen:

  • 102×64 Resolution Graphical LCD Screen

  • Transflective (Sunlight Readable) with white LED Backlight


  • 3 Push-Buttons (MENU, ADD, and SUB)

  • 3 Magnetic Non-Intrusive Switches for Calibration (MENU, ADD and SUB)

Customizable Settings: 2 Individually-Configurable Alarm LED Set-Points

Tamb Temperature Range: -40°C to +54°C / -40°F to 130°F

Wired Analog Output:

  • 4-20 mA (3-Wire)

  • Fault Terminal

  • Optional 2 Dry-Contact Relays with Replaceable 4 Amp Fuses

Digital Output: RS-485 Modbus

Optional WireFree Radio Output: GEN II 900 MHz Radio or GEN II 2.4 GHz Radio

Remote Sensor Kit (Optional Additional Feature): OI-501-5 Remote Sensor Kit with Enclosure (5 Pin)

  • Electrochemical Sensor Max Length: 250 Feet

  • Infrared Sensor Max Length: 40 Feet

  • Photo Ionization Detector Sensor Max Length: 35 Feet

  • Catalytic Bead Sensor Max Length: 15 Feet

Product Dimensions: 5.5″ T x 6″ W x 7″ H (8” W x 17” H Maximum w/ Antenna Fitting and Antenna)

Total Weight: 6 lbs.

Hazardous Location/ Certifications and Approvals:

  • Class I, Division 1, Group C and D, T6

  • Ex d IIB T6

  • Zone 1, AEx d IIB T6

  • Tamb –40°C to +54°C

Hardware Warranty: Limited one year

Sensor Element Warranty: Varies with Gas Type


OI-6000-X-X-X-X-O Data Sheet

OI-6000-X-X-X-X-O Operation Manual


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Additional information

Sensor Type


Gas Type

LEL, VOC10, VOC20, VOC1K, VOC2K, VOC50, H2S, CO, O2, H2S2K, HCN, SO2, CO2, PH3

Radio Configuration

Gen II 900 MHz Radio, Gen II 2.4 GHz Radio

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