Pt-100 Thermometer

Save £45
SKU: AET-936

Please Note: A probe must be ordered for use with this product. A pre-designed penetration or air probe can be selected and purchased online from Class B to 1/10DIN. Alternatively a fully customised probe can be purchased, please call us on 01530 566804 or email for a free quotation.


The AET-936 is a Pt100 Platinum Resistance Thermometer (PRT) with a selectable high resolution of 0.01°C at a range of -80°C to 200°C or 0.1°C from -200°C to 400°C. The unit is designed to accept a 3-wire configuration, flat film Pt100 sensor probe which offers fantastic accuracy at an affordable price and offers an exceptional response time. The probe connects to the unit  using a Lumberg KFV60 plug which is gold plated to minimise connection errors.

Following the constant introduction of directives to reduce the amount of high accuracy mercury thermometers in use, Pt100 thermometers have become the thermometer of choice for high accuracy measurement in laboratories, and industry. The increased accuracy also offers a distinct advantage over K-Type thermometers in industrial temperature measurement under 400°C

  • 34mm LCD display
  • Backlight and function indicators
  • Impact-resistant ABS Case
  • Low battery indicator
  • Auto power off after 15minutes
  • Data hold freezes displayed values
  • Measurement range of -200°C to 400°C (328°F to 752°F)
  • 2 selectable resolution options
    • 0.01°C: -80°C to 200°C
    • 0.1°C: -200°C to 400°C
  • Sampling rate of 3 times per second
  • Over range indicator

Pt-100 Probes

When it comes to probes, your spoilt for choice. We keep a choice of 3 Class B probes in stock, however, if you require increased levels of accuracy these can be easily upgraded to Class A, 1/3 DIN or 1/10 DIN. All of our probes are 3 wire, Flat Film Sensors ensuring a fast response time, and increased accuracy.

Standard Probe Prices In Stock Made to Order
Class B Class A 1/3 DIN 1/10 DIN
Penetration Probe (Pointed Tip) 100mm x 3.2mmØ £57.00 £58.00 £60.00 £102.00
Penetration Probe (Pointed Tip) 150mm x 3.2mmØ £57.00 £59.00 £61.00 £102.00
Immersion Probe (Round Tip) 100mm x 3.2mmØ £57.00 £58.00 £60.00 £102.00
Immersion Probe (Round Tip) 150mm x 3.2mmØ £57.00 £59.00 £61.00 £102.00
Air Probe 100mm x 3.2mmØ £56.00 £59.00 £61.00 £103.00

IEC 60751:2008 is considered the international standard and specifies the tolerances for platinum RTD elements. The two most common tolerances for Pt100 RTD sensors are class A and Class B, for closer tolerance 1/3 DIN and 1/10 DIN standards are available. The higher the element tolerance the broader it’s range to deviate away from the temperature-resistance curve increasing the level of uncertainty, although strictly speaking this doesn’t make 1/10th DIN detectors any more accurate then class B detectors, however it does significantly reduce uncertainty of reading. The table below shows the tolerance for class A and class B detectors as defined by DIN 43760, these standards are then used to find the tolerance of 1/3 DIN and 1/10 DIN detectors. As you can see the tolerance of a class B detector is ten times higher than the tolerance of a 1/10 DIN detector meaning the uncertainty of reading in a class B detector is ten times higher than in a 1/10 DIN detector. It should be noted that tolerances defined in the table below only refer to bare detectors and do not account for the design or construction of the complete sensor.

Misinterpretation of tolerance can lead to unnecessary expenditure as people assume closer tolerance assures better accuracy.

Where the differences in uncertainty can be eliminated or significantly reduced a calibrated class B detector is more cost effective than 1/10 DIN detector for example if an RTD feeds into a process control system the characteristics of each individual sensor can be input eliminating the uncertainties identified in calibration.


Technical Specification

Range: -200° to 400°C or -328.0 to 752.0°F
Resolution: Selectable resolution of 0.1° or 0.01° -80° to 200°C
0.1° -200° to 400°C
Accuracy: ±0.05°C -80° to 200°C, ±0.1°C Others
Power: 1 x 9V PP3 Alkaline Battery (LR-61)
Weight: 292g

Calibration Options

A calibration service can be purchased for this unit. Once the Service has been performed a certificate of calibration is produced and dispatched with your order. Calibration Services are performed on receipt of your order and as such will delay shipping. Details and options are outlined below.

UKAS Calibration (Pt-100) Price
Issued at 4 points: 0 & 200°C
+ 2 points of your choosing from -20°C to 255°C
Additional points: from -20°C to 255°C
from -21°C to -40°C
from -41°C to -80°C
+£10.00 per point
+£40.00 per point
+£95.00 per point

A UKAS calibration can also be considered traceable. The difference between the two is that UKAS calibrations are carried out under the remit of an ISO/IEC 17025 quality system by a laboratory that has been accredited by UKAS, to ensure the consistency and accuracy of results.

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