OI-6000 Explosion Proof Wire Powered Sensor Assembly


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.

Product Number Formula: OI-6000-[Sensor Type]-[Gas Type]-X-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

OI-6000 Certificate 1

OI-6000 Certificate 2

OI-6000 Certificate 3

OI-6000 Certificate 4

OI-6000 Certificate 5

Additional information

Sensor Type


Gas Type

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

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