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Calex PyroUSB - USB Configurable Infrared Temperature Sensor

Manufacturer:
PyroUSB Series infrared pyrometers measure temperatures accurately from -40°C to 2000°C. Suitable for various applications, these models offer easy installation, are PC Configurable and have 4-20 mA Output
Part Number: PyroUSB
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Get reliable, repeatable results without the need for special interfacing or signal conditioning

PyroUSB Series infrared pyrometers measure temperatures from -40°C to 2000°C accurately and consistently, with an outstanding response time of 200 ms. The 4 to 20 mA output is compatible with almost any indicator, controller, recorder or data logger. without the need for special interfacing or signal conditioning.

A choice of measurement wavelengths is available to suit a range of applications.

General-purpose PUA8 (8-14 μm) models can measure from -40°C to 1000°C. They are suitable for measuring high-emissivity materials such as paper, thick plastics, food, pharmaceuticals, rubber, asphalt and painted surfaces. These models are capable of measuring very low temperatures, so they are ideal for sub-zero measurements in the food, logistics and storage industries.

Short-wavelength PUA2 (2.2 μm) models have a choice of temperature ranges from 45°C to 2000°C. They provide a more accurate reading when measuring low-emissivity materials such as many reflective metals. They are also capable of measuring through glass viewports.

Glass PUA5 (5 μm) models have a choice of temperature ranges from 50°C to 1650°C. They are filtered at a wavelength where glass is least reflective, making them an ideal pyrometer for glass surface temperature measurement.

All models have USB communications. A USB cable is included and free software is available to download from the Calex website.

Data is transmitted via Modbus, so it is also easy to configure and read temperatures from the sensor using third-party software.

The USB cable has an IP65 connector at the sensor end, and an IP65 cap protects the sensor when the USB cable is not connected.


Sensor Features

  • Temperature ranges from -40°C to 2000°C
  • 2-wire 4-20 mA output
  • Fully configurable via USB using Modbus protocol
  • Cable and software included
  • Specialised models for measuring metals, high- temperature objects or glass surfaces
  • General-purpose models for most other applications
  • Peak and valley hold mode allows easy measurement of objects on conveyors
  • Stainless steel housing, sealed to IP65
  • Quick and easy installation


Software

The sensor can be configured using the included USB cable and free Windows software, CalexConfig. It is also possible to take temperature readings, see temperature charts and log data via USB in real time. 

CalexConfig is available to download free of charge at www.calex.co.uk/software.


CalexConfig Features

Simple, touch-friendly software for one sensor.

  • Temperature display (°C or °F)
  • Scrolling temperature chart
  • Data logging to comma-separated text file, Excel-compatible
  • PyroUSB sensor configuration:
    • Emissivity setting
    • Averaging
    • Peak/valley hold processing
    • Reflected energy compensation
    • 4-20 mA output temperature scale

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

Every IR instrument has a field of view (FOV), an angle of vision in which it will average all the temperatures it sees

Field of view is described either by its angle or by a distance-to-size ratio (D:S). If D:S = 20:1, and if the distance to the object divided by the diameter of the object is exactly 20, then the object exactly fills the instrument’s field of view. A D:S ratio of 60:1 equals a field of view of 1°.


     

Typical Applications

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


Measuring Hot Food Product Temperature Through Glass Jars

The new PyroUSB 2.2 Series of infrared temperature sensors is ideal for measuring the temperature of hot food products through glass containers.

After a food product is filled into glass jars, samples are usually taken from the production line and manually probed to check the product temperature. The PyroUSB 2.2 now makes it possible to check product temperatures without taking samples from the production line, and without even touching the samples at all.

Read More >>

Technical Information

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:
GLT: 50°C to 1000°C
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)

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

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

Electromagnetic Compatibility Standards

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

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.


Get reliable, repeatable results without the need for special interfacing or signal conditioning

PyroUSB Series infrared pyrometers measure temperatures from -40°C to 2000°C accurately and consistently, with an outstanding response time of 200 ms. The 4 to 20 mA output is compatible with almost any indicator, controller, recorder or data logger. without the need for special interfacing or signal conditioning.

A choice of measurement wavelengths is available to suit a range of applications.

General-purpose PUA8 (8-14 μm) models can measure from -40°C to 1000°C. They are suitable for measuring high-emissivity materials such as paper, thick plastics, food, pharmaceuticals, rubber, asphalt and painted surfaces. These models are capable of measuring very low temperatures, so they are ideal for sub-zero measurements in the food, logistics and storage industries.

Short-wavelength PUA2 (2.2 μm) models have a choice of temperature ranges from 45°C to 2000°C. They provide a more accurate reading when measuring low-emissivity materials such as many reflective metals. They are also capable of measuring through glass viewports.

Glass PUA5 (5 μm) models have a choice of temperature ranges from 50°C to 1650°C. They are filtered at a wavelength where glass is least reflective, making them an ideal pyrometer for glass surface temperature measurement.

All models have USB communications. A USB cable is included and free software is available to download from the Calex website.

Data is transmitted via Modbus, so it is also easy to configure and read temperatures from the sensor using third-party software.

The USB cable has an IP65 connector at the sensor end, and an IP65 cap protects the sensor when the USB cable is not connected.


Sensor Features

  • Temperature ranges from -40°C to 2000°C
  • 2-wire 4-20 mA output
  • Fully configurable via USB using Modbus protocol
  • Cable and software included
  • Specialised models for measuring metals, high- temperature objects or glass surfaces
  • General-purpose models for most other applications
  • Peak and valley hold mode allows easy measurement of objects on conveyors
  • Stainless steel housing, sealed to IP65
  • Quick and easy installation


Software

The sensor can be configured using the included USB cable and free Windows software, CalexConfig. It is also possible to take temperature readings, see temperature charts and log data via USB in real time. 

CalexConfig is available to download free of charge at www.calex.co.uk/software.


CalexConfig Features

Simple, touch-friendly software for one sensor.

  • Temperature display (°C or °F)
  • Scrolling temperature chart
  • Data logging to comma-separated text file, Excel-compatible
  • PyroUSB sensor configuration:
    • Emissivity setting
    • Averaging
    • Peak/valley hold processing
    • Reflected energy compensation
    • 4-20 mA output temperature scale