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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
Description 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.
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 processingThe 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.
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.
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.
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 onnext page for details
Accuracy: ±1°C or 1%, whichever isgreater
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 interfaceResponse 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 withtwo mounting nuts
Cable Length: 5, 10 or 25 m(16.4, 32.8, 82')as standard (custom lengthsalso available)
Weight: 475 g (1 lb), with 5 m(16.4') cable
Environmental Rating:NEMA 4 (IP65)
Ambient Temperature OperatingRange: 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
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