The ISA-60M controller with remote MRI-5175 oxygen sensor/transmitter is specifically designed to continuously monitor for oxygen deficiency in a Magnetic Resonance Imaging (MRI) facility. Maintaining the quality of breathing air in an MRI room is an important safety consideration. Cryogenic gas used to maintain the magnetic field is highly dangerous if released into an enclosed space. Inert gas can create a hazardous situation by reducing the concentration of oxygen in the breathing air to unsafe levels. The ISA-60M system ensures the safety of the technicians and patients by continuously monitoring and displaying the levels of oxygen in the room and providing audio and visual alarms when there is an unsafe, low level oxygen condition in the area being monitored. Three verisons available; Single Channel, Dual Channel, and Three Channel.

Product Highlights

  • Continuous monitoring of area with Long-life oxygen sensor
  • Oxygen sensor/transmitter is designed for EMC compatibility
  • User-programmable alarms and high capacity relays
  • 4-20 mA inputs and outputs
  • 100-240 VAC, 12 VDC power options
  • Fault relay and visual fault alarm
  • RS-232/485 with Modbus protocol
  • Safety Approvals: CE
  • Conforms to STD 61010-1
  • Certified to C22.2 #61010-1


Unit of Measure

Alarm Level Setting

N/A Alarm 1: 5 ppm CO, user adjustable Alarm 2: 10 ppm CO, user adjustable Alarm 3: 20 ppm CO, user adjustable, All adjustable between 1 to 50 ppm

Audible Alarm

N/A 105 dB at 12 in 95 dB at 24 in

Inlet Size

N/A Strain relief (2 supplied) for 0.20” to 0.35” OD Cable

Operating Temperature Range

N/A 32° to 104°F ºF

Power Requirements

N/A 100 to 240 VAC and/or 12 VDC, 15W 12 VDC


N/A 10 lbs

General Description


Temperature: 32° to 104°F (0° to 40°C)


Relative Humidity: 10-99% RH, non-condensing


Pressure, Atmospheric: 20 to 36 inHg (68 to 122 kPa)


Approval: Safety Approvals: CE, Conforms to STD 61010-1, Certified to C22.2 #61010-1






Standard Alarm Points: 19.5% & 17% decreasing oxygen


Display: High-contrast, backlit


Alarms: Visual: LEDs; Audible: Piezoelectric horn, 95 dB at 2 feet


Alarm Relays: 5 programmable gas relays plus fault. All relays are programmable latching or non-latching, dry SPDT, 10 amps (resistive load only) at 110 VAC.


Operating Power: 100 to 240 VAC and/or 12 VDC, 15 Watts


Connections: Strain relief (2 supplied) for 0.20” to 0.35” OD Cable


Operating Power: 100 to 240 VAC and/or 12 VDC, 15 Watts


Enclosure: Thermoplastic box with clear, hinged front cover, designed for NEMA 12 and 4X


Size: 10.5 H x 8.5 W x 5.8 D inches (27 x 22 x 15 cm)


Weight: 8 lbs. (3.6 kg)






Alarms: Visual: 3 Red LEDs; Visual Power/Fault: Green/Red LED; Optional Audible Alarm: 105 dB at 12 inches (30 cm)


Outputs: 4-20 mA, RS-485 Modbus


Power: 24 VDC from ISA-60M


Connection to ISA-60M: Strain relief (1 supplied) for 24 VDC, 4-20 mA, 0.20” to 0.35” OD Cable


Enclosure: Fiberglass-reinforced polyester with non-magnetic coating and hardware


Dimensions: 5 x 5 x 4 inches (2 x 2 x 1.6 cm)


Weight: 2 lbs. (0.9 kg)


Oxygen Sensor supplied with MRI-5175: Type: Electrochemical; Range: 0 to 30.0% by Vol. O2; Resolution: 0.1% by Volume Oxygen; Typical Life: 4 to 5 years


Sensor Cable from MRI-5175 to ISA-60M: 3-wire, shielded cable, typically 18 to 20 AWG, user supplied, UL Listed type CM, PLTC or TC