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PyroEpsilon – Fixed Infrared Temperature Sensor with Adjustable Emissivity

PyroEpsilon – Fixed Infrared Temperature Sensor with Adjustable Emissivity

PyroEpsilon is a fixed infrared temperature sensor with adjustable emissivity setting. It can control temperature range of -20°C to 500°C. You can modify the emissivity setting via 4 – 20 mA input to 4 – 20 mA output to measure temperature. You will get quickest response with the higher stability. It has a stainless steel 316 cover and IP65 protection level. It is ideal to use with the PID controller model number PPT245. The series of PyroEpsilon is of optimum quality, low price and non-contact temperature sensors.

Features :

  • Temperature ranges from -20°C to 500°C
  • 2-wire 4-20 mA output for measured temperature
  • Emissivity adjustment via separate 4-20 mA input
  • 4-20 mA input signal may be supplied by the optional PyroTune emissivity adjuster (pictured), DRR245 indicating controller, or any other source such as a PLC output
  • Stainless steel housing, sealed to IP65
  • Choice of optics to suit all target sizes
  • Not designed or approved for fever detection

 

Description

Field of View -20°C to 100°C 0°C to 250°C 0°C to 500°C
2:1 PE21LT PE21MT * (Contact Calex)
15:1 PE151LT PE151MT PE151HT
30:1 PE301LT PE301MT PE301HT
Ø 5 mm @ 100 mm PECFLT PECFMT PECFHT

PyroEpsilon Sensor:

Attribute Value
Temperature Ranges -20°C to 500°C
Output 4-20 mA (two-wire, on power loop)
Emissivity Setting Adjustable from 0.2 to 1.0 via 4-20 mA input
Response Time, t90 240 ms (90% response)
Spectral Range 8 to 14 μm
Supply Voltage 24 V DC (28 V DC max.)
Min. Sensor Voltage 6 V DC
Max. Loop Impedance 900 Ω (4-20 mA output)
Input Impedance 50 Ω

PyroTune Emissivity Adjuster:

Attribute Value
Output 4-20 mA
Supply Voltage 24 V DC (13 V to 28 V DC)
Display Format 3.5 digit LCD
Display Units Emissivity (0.2 to 1.0) or current (4 to 20 mA)
Adjustment Push-buttons (raise/lower/set)
Construction Polycarbonate with gasket, transparent lid (PC), and quick-release screws
Mounting Surface
Dimensions 65(h) x 50(w) x 35(d) mm
Weight 72 g
Environmental Rating IP65
Ambient Temperature Range 0°C to 70°C
Relative Humidity 95% max. non-condensing

Field of View Diagrams

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.

Mechanical Specifications:

Attribute Value
Construction Stainless Steel
Dimensions Diameter 18 mm x length 103 mm
Thread Mounting M16 x 1 mm pitch
Cable Length 1 m (longer lengths available to order)
Weight with Cable 95 g

Environmental Specifications:

Attribute Value
Environmental Rating IP65
Ambient Temperature Range 0°C to 70°C
Relative Humidity 95% max. non-condensing

 

Datasheet

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Manual

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