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PyroUSB (New Version)

PC Configurable Infrared Temperature Sensors with 4-20 mA Output
Part Number: PyroUSB
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Product Files

Sensor Features

  • Temperature ranges from -40°C to 2000°C
  • Short-wavelength models for better accuracy on high-temperature targets and metals
  • 5 µm models for measuring glass surface temperature
  • General purpose models for most other applications
  • Rescalable 4-20 mA output
  • Fully configurable via USB interface (cable and Windows software included)
  • Use the USB or analogue output only, or both together

Software Features

  • Sensor configuration
  • Display of measured temperature
  • Scrolling temperature chart
  • On-screen and audible alarms
  • Data acquisition to Excel-compatible file

 

Sensor Features

  • Temperature ranges from -40°C to 2000°C
  • Short-wavelength models for better accuracy on high-temperature targets and metals
  • 5 µm models for measuring glass surface temperature
  • General purpose models for most other applications
  • Rescalable 4-20 mA output
  • Fully configurable via USB interface (cable and Windows software included)
  • Use the USB or analogue output only, or both together

Software Features

  • Sensor configuration
  • Display of measured temperature
  • Scrolling temperature chart
  • On-screen and audible alarms
  • Data acquisition to Excel-compatible file

 

The PyroUSB’s choice of measurement wavelengths allows it to be used in a wide range of industrial applications.

Typical Applications

Steel
The short-wavelength PUA2 provides a more accurate reading on reflective metal surfaces, such as iron and steel, than longer-wavelength sensors. Applications include general steel strip temperature measurements at low temperatures, steel temperature measurement before the reheat furnace and temperature at the coiler on the hot rolling mill
Extrusion, Forging and Casting
PUA2 models are ideal for measuring the temperature of steel dies and workpieces in extrusion, forging and casting applications
Food
Measure the temperature of hot food products inside glass containers from 45°C to 300°C using PyroUSB PUA2 models. The pyrometer measures through the glass; readings can be taken on-line without interrupting production.

Other applications include tunnel pasteuriser temperature monitoring, and temperature of bare stainless steel surfaces on food manufacturing machinery, such as hot rollers and conveyors
Brake testing
PyroUSB PUA2 sensors allow non-contact measurement of ceramic, carbon, iron and steel brake disc temperatures between 45°C and 2000°C on brake test rigs
Wind power
PUA2 models can monitor brake disc surface temperature in wind turbines, to help warn of overheating and optimise cooling cycles. PUA8 models measure non-reflective parts of the turbine, such as gearbox and bearing housings. Non-contact infrared sensors can monitor the temperature of vibrating parts while being isolated completely from vibration.
Bearings, gearboxes and shafts
Non-contact temperature measurement of bare steel surfaces: the PyroUSB PUA2 is less susceptible than long-wavelength sensors to errors caused by reflections
Furnaces and ovens
The high-temperature capability of the PyroUSB PUA2 is ideal for measuring the temperature of hot objects inside furnaces and ovens, including steel mill heat treatment furnaces.
Pipe coating
Furnace-heated or induction heated pipe temperature measurement, at the preheat stage, before coating (using model PUA2)
Paper, Print and Converting
PUA2 models: Monitoring of the surface temperature of hot bare steel rollers, such as steam-heated dryer cylinder temperature in paper manufacturing. 

PUA8 models: Accurate measurement of the paper temperature is easy, even at very low temperatures. 

Temperature readings may be used for control and alarm.

General Specifications

Temperature Range
PUA2 models: 
LT: 45°C* to 300°C
PT: 100°C to 400°C
MT: 250°C to 1000°C
HT: 450°C to 2000°C

PUA5 models: 
GHT: 200°C to 1650°C

PUA8 models: 
-40°C to 1000°C
Field-of-View
PUA2 models: 
15:1 (with LT or PT temperature range)
25:1 (with MT or HT temperature range)
75:1 (with MT or HT temperature range)
Close Focus ø7.5mm @ 500mm (with MT or HT temperature range)

PUA5 models: 25:1

PUA8 models: 30:1 or Close Focus ø 5 mm @ 100 mm
Output
Two-wire 4 to 20 mA (linear with temperature)
Configuration
Via PC port conforming to USB 2.0
Accuracy
PUA2 models: ±1% of reading or ±2°C, whichever is greater

PUA5 and PUA8 models: ± 1°C or 1% of reading, whichever is greater
Repeatability
±0.5% of reading or ±0.5°C, whichever is greater
Emissivity Setting
Adjustable 0.1 to 1.0 via software
Response Time, t90
200 ms
Spectral Range
PUA2: 2.0 to 2.6 µm
PUA5: 5 µm
PUA8: 8 to 14 µm
Supply Voltage
24 V DC (28 V DC max)
Sensor Voltage
6 V DC min
Max Loop Impedance
900 Ω @ 24 V DC
Maximum Span (analogue output)
Full temperature range
Minimum Span (analogue output)
100°C

Software Specifications (CalexConfig)

Operating System
Windows
Features
Temperature display, scrolling temperature chart, sensor configuration, data acquisition with scheduled start, on-screen alarm
Data log file format
.csd (comma separated text format, may be imported to spreadsheet software such as Excel)
Data transmission protocol
Modbus over USB (it is possible to communicate with the sensor for temperature measurement and configuration using third-party software. Protocol information is provided in the instruction manual.)

Environmental Specifications

Environmental Rating
IP65
Ambient Temperature Range
0ºC to 70ºC (cooling option available for use in higher ambient temperatures)
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 Calex sensors detect only the wavelengths of infrared radiation that are not absorbed by the atmosphere.

Mechanical Specifications

Construction
Stainless Steel
Dimensions
Ø 27.6 x length 61 mm including cable glands
Thread Mounting
M20 x 1 mm pitch, length 15 mm
Weight with Output Cable
155 g
Output Cable Length
1 m (longer cable available to order)
USB Cable Length
1.8 m

Minimum Measurable Temperature (PUA2-151-LT only)

Graph showing the minimum measurable object temperature (Tmin), determined by surface emissivity (ε) and sensor temperature (Ts). Applies to model PUA2-151-LT only.

Electromagnetic Compatibility Standards

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

The 4-20 mA analogue output and USB output may be used individually, or both may be used at the same time.

Electrical Installation

4-20 mA output

USB and 4-20 mA outputs together

USB output only

Dimensions (mm)

 

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