Otis Instruments OI-675 Sensor Assembly

Availability: In stock
Sensor TypeElectrochemical
Power TypeLoop-Powered (2-Wire)
Operating Voltage12V to 24V DC
Current Draw35 mA Maximum
Display Screen3 Character, 7 Segment Display Screen
Product CompatibilityGEN II WireFree Transmitter (01-5900)
GEN II Wired Monitors (01-7010, 01-7032, 01-7440, 01-7480)
Interface3 Push-Buttons (MENU, ADD and SUB)
3 Magnetic, Non-Intrusive Switches for Calibration
Tamb Temperature Range-40°C to +50°C (Varies with Sensor Type)
Wired (Analog) Output4-20 mA (2-Wire)
Product Dimensions5.42 in. L x 6.03 in. W x 17.03 in. H (Max. Dimensions with Attachments)
Enclosure MaterialsAluminum Device Enclosure
303 Stainless-Steel Sensor Housing
Total Weight5.75 Ibs.
Product MountingWall Mount (Included)
ApprovalsQPS Component Certified Explosion-Proof (CO, H2S, O2, and SO2 Gas Types)
Hazardous Location CertificationClass I, Division 1, Groups C & D
Hardware Warranty1-Year Limited
Sensor Element Warranty1-Year (Varies with Gas Type)
Part Number Formula01-675-[Gas]-[Enclosure]


The Otis Instruments OI-675 Series Toxic Gas Detector is a versatile assembly that uses an electrochemical sensor to detect a variety of gases. 2-Wire Loop-Powered to withstand extreme climatic conditions and harsh environments. Magnetic switches allow for non-intrusive calibration while in the field as well as full system settings and diagnostics.


  • Electrochemical Sensor
  • Wired Communication
  • Loop-Powered (2-Wire)
  • 3 Character, 7 Segment Display Screen
  • 3 Push-Button Interface (ADD, MENU, SUB) with 3 Corresponding Magnetic, Non-Intrusive Switches
  • Operating Temperature Range of -40°C to +50°C
  • Aluminum Device Enclosure
  • 4-20 mA (2-Wire) Analog Output
  • 303 Stainless-Steel Sensor Housing
  • QPS Explosion Proof/Flame-Proof Certification for Select Gases
  • 1-Year Limited Hardware Warranty

​Please refer to datasheet for more information