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Intrinsically Safe Infrared Temperature Sensor


Intrinsically Safe Infrared Temperature Sensor | OSAT

Intrinsically Safe Infrared Temperature Sensor

  • Suitable for Hazardous Areas, Zone 0, 1 and 2 (Gas), and Zone 20, 21 and 22 (Dust), With a Suitable Intrinsically Safe Isolator
  • Temperature Range: -20 to 1000°C (-4 to 1832°F)
  • Two-Wire, 4 to 20 mA Output
  • Re-Scalable Output and Adjustable Emissivity Setting via Optional USB Adaptor
  • Fast Response Time and High Stability
  • 316 Stainless Steel Housing—Ideal for Offshore Applications
  • IP65 Sealed
  • Supplied with Up to 25 m Cable
Infrared Temperature Measurement Instruments - View related products


The OSAT is an intrinsically safe infrared pyrometer. It measures the temperature of surfaces in hazardous areas without contact, and provides a direct 4-20 mA output. It is certified to ATEX, IECEx and TIIS standards.The OSAT is a small and compact low cost option for temperature measurement in hazardous locations. It uses Intrinsic Safety as the method of protection, whereas explosion proof pyrometers typically have bulky, and expensive housings.

Typical Applications

Petrochemical - condition monitoring
Bearing, gearbox and motor housing surface temperatures in refineries and chemical plants can be monitored without contact, eliminating the need to replace contact probes that are easily damaged by vibration.
Petrochemical - liquid storage and processing The sensor can be positioned in a Zone 0 environment such as the top of a tank of hazardous liquid or reactor, to measure the surface temperature of the liquid.
Dust in pulp, paper and packaging plants can create a fire and explosion hazard. The OSAT intrinsically safe pyrometer can be used for paper web temperature measurement and condition monitoring in ATEX and IECEx classified hazardous areas.
Coal conveyors
The OSAT fast 240 ms response time makes it ideal for measuring the surface temperature of coal on conveyors, as well as other bulk materials where there is an explosive dust hazard.
Gas cylinder filling
The surface temperature of cylinders of explosive gases is monitored with the OSAT as they are filled. The Group IIC, T4 classification makes it suitable for almost all gases including propane, butane, hydrogen and acetylene. The temperature of each cylinder is measured on the filling rig to help detect fault conditions in filling, to calculate the final filled volume (in conjunction with the pressure), to ensure the volume is repeatable, and to improve the filling rate.
Automotive painting
Solvents in automotive painting can create a gas explosion risk. The intrinsically safe OSAT may be used to monitor the temperature of containers and vessels, the surface temperature of liquids and powders, and the temperature of painted surfaces.
The OSAT 316 stainless steel housing and intrinsically safe certification makes it well-suited for use on offshore platforms. As well as measuring the temperature of surfaces on the rig, it can be used to measure the temperature of the sea surface.

General Specifications
Output: 4 to 20 mA
Maximum Temperature Span: 1000°C (1832°F)
Minimum Temperature Span: 100°C (180°F)
Field of View: See To Order chart on next page for details
Accuracy: ±1°C or 1%, whichever is greater
Repeatability: ±0.5°C or 0.5%, whichever is greater
Emissivity Setting Range: 0.20 to 1.00 (pre-set to 0.95)
Emissivity Setting Method: User configurable via USB interface Response Time, t90: 240 ms (90% response)
Spectral Range: 8 to 14 µm
Supply Voltage: 12 to 24 Vdc, ±5%
Maximum Current Draw: 25 mA
Construction: Stainless Steel 316
Dimensions: ø20 x length 150 mm (5.9")
Mounting: M20 x 1.5 mm thread, length 46 mm (1.81"), supplied with two mounting nuts
Cable Length: 5, 10 or 25 m (16.4, 32.8, 82') as standard (custom lengths also available)
Weight: 475 g (1 lb), with 5 m (16.4') cable
Environmental Rating: NEMA 4 (IP65)
Ambient Temperature Operating Range: 0 to 70°C (32 to 158°F)
Relative Humidity: 95% non-condensing maximum

ATEX Classification: Ex II 1GD
IECEx Classification (Gas): Ex ia IIC T4 Ga
IECEx Classification (Dust): Ex ia IIIC T135°C IP65 Da
Ambient Temperature Rating: -20°C ≤Ta ≤70°C
Maximum DC Input Voltage: Ui = 28V
Maximum Input Current: Ii = 93 mA
Maximum Input Power: Pi = 650 mW
Maximum Internal Capacitance: Ci = 8 nF
Maximum Internal Inductance: Li = 0 mH
ATEX Certificate Number: CML 14ATEX2079
IECEx Certificate Number: IECEx CML 14.0032
Place Order(Specify Model Number)
Part Number/Desc.
15:1 FOV Models
Availability: 10 weeks
ATEX infrared temperature transmitter 15:1 FOV, -20 to 100°C (-4 to 212°F) Range, 5 m (16 ft) cable
Availability: 1 week
ATEX infrared temperature transmitter 15:1 FOV, 0 to 250°C (32 to 482°F) Range, 5 m (16 ft) cable
Availability: 10 weeks
ATEX infrared temperature transmitter 15:1 FOV, 0 to 500°C (32 to 932°F) Range, 5 m Range, 5 m (16 ft) cable15:1
Availability: 10 weeks
ATEX infrared temperature transmitter 15:1 FOV, 0 to 1000°C (32 to 1832°F) Range, 5 m Range, 5 m (16 ft) cable30:1
Availability: 7 weeks
Fixed Mounting Bracket
Availability: 3 weeks
Adjustable Mounting Bracket
Availability: 10 weeks
USB Adaptor and Configuration Software
Availability: 10 weeks
Air Purge Collar
For other FOV Models, see Part Number Builder Below
All amounts shown in USD
Note: To order with a UKAS traceable calibration certificate at 3 temperature points add “-CALCERTA” to end of model number, contact Sales for additional cost. If ordering “ST” custom range option, then specify range required in order comments.

Part Number Builder

Build Your Part Number Below
Option Descriptions:

(1) Field of View select from:
211 for 2 to 1 FOV
151 for 15 to 1 FOV
301 for 30 to 1 FOV
801 for Close focus 5 mm @ 100 mm ( 1/8” @ 4”)

(2) Temperature Range select from:
LT for -20 to 100°C (-4 to 212°F)
MT for 0 to 250°C (32 to 482°F)
HT for 0 to 500°C (32 to 932°F)
XT for 0 to 1000°C (32 to 1832°F)
ST for Custom (within -20°C (-4°F) and 1000°C (1832°F))

(3) Cable Length select from:
05 for 5 m (16 ft)
10 for 10 m (33 ft)
25 for 25 m (82 ft)
Note: All combinations may not be valid, check spec sheet for valid part numbers.
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