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Products  |  Thermal Engineering and HVAC  |  Fundamentals of Thermodynamics  |  WL 202
WL 202 Fundamentals of Temperature Measurement Show data sheet (pdf file) Print page
Technical Description

  Recording temperature is one of the basic tasks in process and manufacturing automation. Electronic temperature sensors are the most widely used in automation applications but conventional thermometer types are still widely applied in many areas. The WL 202 experimentation set-up covers the full range of temperature measurement methods. As well as non-electrical measuring methods, such as gas- and liquid-filled thermometers and bimetallic thermometers, all typical electronic measuring methods are covered in the experiments. The electronically measured temperatures are displayed directly on programmable digital displays. A temperature-proportionate output voltage signal (0...10V) is accessible from lab jacks, enabling temperature characteristics to be recorded with, for example, a plotter. A digital multimeter with precision resistors is used to calibrate the electrical measuring devices. Various heat sources or storage units (immersion heater, vacuum flask and laboratory heater) permit relevant temperature ranges to be achieved for the sensors being tested. A plastic casing houses the sensors, cables, temperature measuring strips and immersion heater.

  The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.


Learning Objectives / Experiments

- learning the fundamentals of temperature

  measurement by experimentation
- familiarisation with the various methods, their

  areas of application and special features
  * non-electrical methods: gas- and liquid-filled

     thermometers, bimetallic thermometers and

     temperature measuring strips
  * electronic methods: thermocouple,

     resistance temperature detector Pt100,

     thermistor  (NTC)
- determining air humidity with a psychrometer
- calibrating electronic temperature sensors



* Experimental introduction to temperature

  measurement: methods, areas of application,

* Clearly laid out unit primarily for laboratory

  experiments, also suitable for demonstration


Alternative products
HL 104 -- Temperature Measurement Training Panel
IA 110 -- Calibrating a Pressure Sensor
IA 120 -- Principles of Industrial Sensors
WL 920 -- Advanced Temperature Measurement Trainer

[1] experiments in the fundamentals of temperature measurement with 7 typical measuring devices
[2] various heat sources or storage units: laboratory heater, immersion heater, vacuum flask
[3] calibration units: precision resistors and digital multimeter, +/-200mV
[4] mercury, bimetallic and gas pressure thermometers
[5] temperature sensors: Pt100, thermocouple type K, thermistor (NTC)
[6] various temperature measuring strips
[7] psychrometer for humidity measurement
[8] plastic casing for sensors, cables, measuring strips and immersion heater

Technical Data

Immersion heater
- power output: 300W
- adjustment of power feed via power-regulated

Laboratory heater with thermostat
- power output: 450W
- max. temperature: 450C
Vacuum flask: 1L

Measuring ranges
- resistance temperature detector Pt100: 0...100C
- thermocouple type K: 0...1.000C
- thermistor (NTC): 20...55C
- mercury thermometer: -10...300C
- bimetallic, gas pressure thermometer: 0...200C
- temperature measuring strips: 29...290C
Precision resistors: 10Ω, 100Ω, 1.000Ω
Psychrometer: thermometer: 0...60C


Dimensions and Weight
LxWxH: 800x500x650mm
Weight: approx. 50kg
Required for Operation
230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase
Scope of Delivery

1 experimental unit

1 case
1 set of cables
1 laboratory heater
1 immersion heater
1 vacuum flask
1 digital multimeter
1 set of instructional material

Order Details

060.20200  WL 202  Fundamentals of

                                 Temperature Measurement

© 2005 G.U.N.T. Gerätebau GmbH