CS74 Intrinsically Safe Temperature Transmitter

CSA Class 1, Division 1, Groups C and D, T3
Class 1 Zone 1 AEx ia IIB T3 Gb

Core Sensors offers the CS74 Intrinsically Safe temperature transmitter, designed for use in hazardous locations with an approved barrier (see page 3 of datasheet for entity parameters). Features include a 316L SS probe and thread area and a stainless steel housing, making it compatible with a wide range of process liquids and gasses for harsh applications. Configurable temperature ranges from -40 to +200°C are available with various probe lengths. A wide variety of standard electrical connections are available with 4-20mA or various voltage output signals.

±0.4% BFSL



Max Ambient Operating Temperature


Maximum Media Temperature

Temperature Sensor Range-40+200°C, as specified
Sensor TypeRTD
Max Pressure (<2 inch probe)7,250PSI
Max Pressure (>2 inch probe)2,175PSI
Total Error at RT±0.5%±1%of FS
Total Error at FS±2%of FS
Accuracy (includes non-linearity,
hysteresis, repeatability)
≤±0.4%FSO BFSL
Supply Voltage
(4-20mA, 1-5V)
1427VDC, unregulated
Supply Voltage
(0.5-4.5V ratiometric)
4.555.5VDC, regulated
Supply Voltage
(0.5-2.5V non-ratiometric)
35VDC, unregulated
Insulation Resistance100MΩ (50 VDC case to pins)
Ambient Operating Temperature-40+85°C
Storage Temperature-40+125°C
Shock Resistance100G11 msec ½ sine
Linear Vibration10G10 to 1000Hz
Ingress ProtectionIP65Rating dependent on electrical termination.
Contact factory for higher ratings
EMI/RFI ProtectionYes
  • Gear Box lubrication systems
  • Hydraulic oil fluid
  • Gas flow
  • Fracking pump mud temperature monitoring
  • Water & chemical storage
  • CSA Class 1, Division 1, Groups C and D, T3
  • Class 1, Zone 1 AEx ia IIC T4 Gb
  • Wide configurable temperature ranges from -40 to +200°C
  • ≤ ±0.4% BFSL accuracy

While the certification of products limits the ability to customize products, work with our team to discuss our capabilities to further certify the options you need. Our capabilities include the customization of:

  • Process connection thread and material
  • Pressure range calibration
  • Electrical connection
  • Accuracy
  • Proof / Burst pressure rating
  • IP rating
  • Overall size
Dimensional Reference Drawing

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Model Number Configuration


We are committed to providing the highest quality instrumentation on every order.

Core Sensors warrants that all items shipped will be free of defects in material and workmanship for a period of one (1) year from the date of shipment.

View our complete warranty information here.