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


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Part NumberDescription
OI-6000-CB-PCAOI-6000 Control Board with LCD Screen Installed
OI-6000-IR-152-CB-PCAOI-6000 Control Board with LCD Screen Installed (For OI-6000-IR-152 Only)
OI-LCD-102LCD Screen with White LED Backlight
OI-6000-FP-KITOI-6000 Faceplate Kit with Faceplate, Label, (2) Thumbscrews, and Foam to Secure LCD Screen
OI-6000-XRB-PCAOI-6000 Radio/Relay Board with Relay Components Only (Not for OI-6000-IR-152)
OI-6000-RXB-PCAOI-6000 Radio/Relay Board with Radio Components Only, No Radio Module Installed (Not for OI-6000-IR-152)
OI-6000-RRB-PCAOI-6000 Radio/Relay Board with Radio and Relay Components, No Radio Module Installed (Not for OI-6000-IR-152)
OI-RADIO-2.4-THGEN II 2.4 GHz Radio Module
OI-RADIO-900-LAIRDGEN II 900 MHz Radio Module
OI-432-UFL-4u.FL Cable for Connecting Radio Module to Board
OI-AN-2.4-RIGID-R2.4 GHz Antenna, Non-Flexible, Right Angle
OI-AN-900-FLEX-R900 MHz Antenna, Flexible, Right Angle
OI-420Otis Magnet
OI-402-5PACKPackage of 5 Desiccant Bags, 6 Grams per Bag
OI-495-OMain Enclosure O-Ring
OI-2011-SB-IRAnalog Sensor Board for Infrared Sensor Elements
OI-2014-10Analog Sensor Board for PID Sensor Elements, 0-10 PPM Scale
OI-2014-20Analog Sensor Board for PID Sensor Elements, 0-20 PPM Scale
OI-2014-50Analog Sensor Board for PID Sensor Elements, 0-50 PPM Scale
OI-2014-1KAnalog Sensor Board for PID Sensor Elements, 0-1000 PPM Scale
OI-2014-2KAnalog Sensor Board for PID Sensor Elements, 0-2000 PPM Scale
OI-2015-SB-NECAnalog Sensor Board for Electrochemical Sensor Elements, Please Specify Gas Type
OI-2016-SB-O2Analog Sensor Board for Oxygen Sensor Elements
OI-2000-CAP-ASSYSensor Housing Cap with Flame Arrestor and O-Ring (Not for OI-6000-IR-152)
OI-500-BSensor Housing Rainguard
OI-6000-SXB-PCAOI-6000 Sensor/Relay Board without Relay Components Installed (Only for OI-6000-IR-152)
OI-6000-SRB-PCAOI-6000 Sensor/Relay Board with Relay Components Installed (Only for OI-6000-IR-152)
OI-410Calibration Cup Kit, Includes 3 Feet of Tubing
OI-501-55 Wire Remote Sensor Housing Mounting Kit, Does Not Include Cable
OI-SENSOR-CABLERemote Sensor Kit Cable, Sold per Foot
OI-FUSE-4A-250Fuse 4A, 250V Slow Blow

Additional information

Sensor Type


Gas Type

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

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