Non Contact Pyrometer (AST E250 PL & E450 PL)

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E250 PL and E450 PL are highly economic digital IR pyrometers with extended sensor head and separate electronic box for non-contact temperature measurement of metals, ceramics and graphite etc in temperature ranges between 250oC and 1900oC

Details :

  • E250 PL and E450 PL IR Pyrometers are two piece measurement systems containing one extended sensor head and one electronic box .The electronic box comes with Inbuilt 4 digit LCD display which offers many signal processing features.The Keypad on the electronic box helps in setting parameters like Emissivity, Analog Sub range,Set point,Hysteresis (Hyst), Analog Output, Unit of temp(oC or F), Response Time, Peak Picker and Sensor address etc. The sensor head is un-effected by electromagnetic interferences.
  • E250 PL and E450 PL Infrared Pyrometers are provided with USB 2.0 output & PC Software for communication. The pyrometer can be powered through USB port, in this case no external power supply is required. 24V DC is required for operation of Analog output 4...20mA, 0...20mA, 0... 10V, Laser, RS-232/RS-485 and Relay output.

Product Feature :

  • Digital pyrometer with extended optical head.
  • Inbuilt LCD & Keypad for parameterization.

Temperature Range : E250 PL

  • 250oC.1000oC
  • 300°C.1300oC
  • 350oC.1800oC
  • E450 PL
  • 600oC1900oC

Features :

  • Wide temperature ranges from 250oC to 1900°C.
  • Spectral range from 1.0 μm...1.6 μm
  • Inbuilt LCD Display and Keypad for parameterisation
  • Fast response time within milliseconds
  • Laser Targeting light for precision targeting
  • Analog output options available like 0...20mA,4...20mA and 0...10V
  • USB2.0 Digital output and RS-232/RS-485 Serial interface
  • Relay output
  • User friendly PC software for communication

Standard Scope of Supply :

  • Pyrometer with LCD Display
  • Keypad for parameterizing
  • Extended Sensor head with 3 mtr cable
  • Laser Targeting Light
  • Analog output 4...20mA, 0...20mA, 0... 10V
  • USB 2.0 Digital output, USB cable
  • Relay Output
  • Calibration certificate, Software & Operation manual

Optional :

  • Mechanical & Electrical Accessories
  • RS-232 / RS-485 Interface card
  • Extra Sensor Head Extension Cable Lengths

Applications :

  • Induction heating Forging
  • Casting Sintering
  • Annealing Melting
  • Welding Rolling

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Technical Specification

Model E250 PL E450 PL
Temperature Range(Analog
sub-range adjustable)
Spectral Range 1.6 μm 1.0 μm
Photodetector Type InGaA Si
Distance to Spot Size Ratio 20 : 1
40 : 1
80 : 1
Emissivity (ε) 0.1….1.0 adjustable
Response Time 2 msec adjustable upto 10 sec
Accuracy ±0.3% of the measured value +1o C
Repeatability 0.1% of reading in oC +1oC
Sighting Option Laser Pilot Light(PL)
Analog Output 0-20mA, 4-20mA, 0-10V(User Selectable)
Digital Output USB 2.0 output
RS - 232 / RS - 485 interface card (Optional)
*at a time only one digital output possible
Operating Temp. Range Electronic Box and Sensor Head upto 70oC
Storage Temp. Range -20oC….70oC
Relay Output Relay output with hysteresis 60V DC / 42V AC RMS,
Adjustable Parameters and
Features via Software
Emissivity, Response Time, Clear Time(Peak Picker),
Analog Output, Analog Scale(sub range), Unit of
Temperature (oC/oF), Communication mode(Comm.
mode), Record Feature etc.
Adjustable Parameters and
Features via Keypad
Emissivity, Set Point, Hysteresis (Hyst), Analog Sub
Range, Analog Output, Unit of temperature, Sensor
address, Response Time, Clear Time (Peak Picker) etc.
Power Supply 24V DC
Power Consumption Max 2.5 watt
Laser Power <1 m watt
Protection Class IP65
Housing Sensor Head : Stainless Steel
Electronic Box : Zinc
  • Power supply,  Digital output and Analog output are
  • galvanically isolated against each other
  • Not applicable for USB 2.0 digital output
Operating Humidity 10-95%, Non-Condensing Conditions
Weight & Dimensions 600g 112.5mmx82.5mmx33mm (L x W x H)

Spot Sizes (mm)

Manufactured Working
Distances WD (mm)
E250 300oC-1300oC
E250 350oC-1800oC
E450600oC-1900oC (80:1)
90 4.5 2.3 1.2 1.2
300 15 7.5 3.8 3.8
600 3 15 7.5 7.5
Aperture(A) 5 5 5 5

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