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Calex PyroEpsilon Series Infrared Thermometers

Manufacturer:
PyroEpsilon non-contact infrared sensors measure temperatures from -20°C to 500°C and provide a linear 4 to 20mA output. This output signal is compatible with almost any indicator, controller, recorder, data logger etc., without the need for special interfacing or signal conditioning.
Part Number: PyroEpsilon
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Measure Temperatures From -20°C to 500°C Without Contact

PyroEpsilon non-contact infrared sensors measure temperatures from -20°C to 500°C and provide a linear 4 to 20mA output. This output signal is compatible with almost any indicator, controller, recorder, data logger etc., without the need for special interfacing or signal conditioning.

The sensor’s emissivity setting can be adjusted from 0.2 to 1.0 to cope with different target materials and is controlled by a 4-20 mA input. This gives the opportunity to adjust the emissivity setting automatically from a programmable logic controller (PLC). Alternatively the emissivity setting can be adjusted manually using the optional PyroTune module. If the 4-20 mA input is left open or short-circuit, the emissivity setting defaults to 0.95.


Features

  • Temperature ranges from -20°C to 500°C
  • Two-wire 4-20 mA output
  • Adjustable emissivity via continuously variable 4-20 mA input - measure a wide range of target materials
  • Choice of precision optics for large or small targets
  • Fast response with high stability
  • Stainless steel housing, sealed to IP65
  • Quick and easy installation
  • Wide range of accessories
  • Conforms to industrial EMC standards

Target size and distance are critical to accuracy for most IR thermometers

   

Please note: The given measured spot size contains 90% of the energy detected by the sensor. We normally recommend the target is at least twice as large as the given measured spot for maximum accuracy. Sensors may be used at longer distances than the above diagrams show. There is no maximum measurement distance in clean air; this is because the PyroEpsilon detects only the wavelengths of infrared radiation that are not absorbed by the atmosphere. 2:1 optics are not available on sensors with temperature range 0°C to 500°C as standard. Please contact Calex for more information.

Typical Applications

The emissivity setting of the PyroEpsilon infrared temperature sensor is adjustable via an analogue input, so it can be controlled automatically during the process, for example by a PLC, or manually, by using the controls on the optional PPT245 indicating controller or the optional PyroTune emissivity adjuster. If the emissivity of the target changes during the process, then the PyroEpsilon is ideal.

The PyroEpsilon is also a good choice if a simple pyrometer with a 4-20 mA output is required, but you are not sure if the emissivity of the target surface is high enough for a fixed-emissivity sensor to be suitable. When no 4-20 mA input signal is present, the emissivity setting will default to 0.95. Emissivity adjustment may then be added later on if required.

The PyroEpsilon may be used in many applications, including the following:


Food

Measurement of the temperature of food production equipment including bakery trays and plastic moulds. Surface temperature of PTFE coated rollers.


Paper and Packaging

Glossy or shiny paper temperature


Plastics

Thermoforming temperatures, temperature of plastic bottle parison tubes before inflation in blow moulding


Power Industry

Measuring the temperature of painted surfaces in switchgear cabinets, generator housings


Pipe Coating

Measurement of pipe temperature during coating where the emissivity of the surface increases during the process


Condition Monitoring

e.g. painted bearing housings, driveshafts, rollers and gearboxes. Turbine housing temperature measurement. Monitoring the outer surface temperature of boilers and pipe

Technical Information

Output Two-wire 4-20 mA
Temperature Range LT = -20 to 100 °C
MT = 0 to 250 °C
HT = 0 to 500 °C
Accuracy ±1% of reading or ±1°C, whichever is greater
Repeatability ± 0.5% of reading or ± 0.5°C, whichever is greater
Emmisivity Setting Variable 0.2 to 1.0 via continuous 4-20 mA input
Response Time 240 ms (90% response)
Spectral Range 8 to 14 μm
Supply Voltage (at
Sensor)
6 V DC to 28 V DC
Max. Loop Impedance 900 Ω (output loop)
Input Impedance 50 Ω (input loop)
Max. Current Draw 20 mA



Mechanical

Construction Stainless Stee
Dimensions 18 mm diameter x 103 mm long
Thread Mounting M16 x 1 mm pitch
Cable Length 1m (longer lengths available to order)
Weight with Cable 95 g



Environmental

Environmental (IP) Rating IP65
Ambient (Operating)
Temperature Range
0°C to 70°C
Ambient (Operating)
Humidity
95% max. non-condensing

Electromagnetic Compatibility Standards

Conforms with EN61326-1, EN61326-2-3 (Electrical Equipment for Measurement, Control and Laboratory Use – EMC Requirements – Industrial)

Measure Temperatures From -20°C to 500°C Without Contact

PyroEpsilon non-contact infrared sensors measure temperatures from -20°C to 500°C and provide a linear 4 to 20mA output. This output signal is compatible with almost any indicator, controller, recorder, data logger etc., without the need for special interfacing or signal conditioning.

The sensor’s emissivity setting can be adjusted from 0.2 to 1.0 to cope with different target materials and is controlled by a 4-20 mA input. This gives the opportunity to adjust the emissivity setting automatically from a programmable logic controller (PLC). Alternatively the emissivity setting can be adjusted manually using the optional PyroTune module. If the 4-20 mA input is left open or short-circuit, the emissivity setting defaults to 0.95.


Features

  • Temperature ranges from -20°C to 500°C
  • Two-wire 4-20 mA output
  • Adjustable emissivity via continuously variable 4-20 mA input - measure a wide range of target materials
  • Choice of precision optics for large or small targets
  • Fast response with high stability
  • Stainless steel housing, sealed to IP65
  • Quick and easy installation
  • Wide range of accessories
  • Conforms to industrial EMC standards