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Applent AT420x Handheld Multi-Channel Temperature Meter

Applent AT420x Handheld Multi-Channel Temperature Meter
sku: AT4202/4/8
MPN: AT4202

Free UK Delivery On Orders Over £40
  • Choice of 3 models with 2, 4 and 8 channels
  • Compatible with type J, K, T, E, S, N, B and R thermocouples
  • Wide measurement range

£200.00 Incl. VAT £240.00
£200.00 Incl. VAT £240.00
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Applent AT420x Handheld Multi-Channel Temperature Meter Details

Note: there are three versions of this tester available. Use the drop-down box above to select between the different options of 2 channels, 4 channels and 8 channels.

Made for use on the move, the AT420x series (which consists of the AT4202, AT4204 and AT4208) is a handheld, portable and easy-to-use temperature monitoring tool that accepts inputs from 2 up to 8 thermocouples (varies depending on model chosen).

Designed for fast response with a high-performance ARM microprocessor built-in, the AT420x series displays comprehensive testing data on its built-in 2.8" true colour TFT-LCD display. The screen is also a touchscreen, making it easy to navigate between testing modes and results.

The unit is designed for use with a wide variety of thermocouples, giving it a large measurement range (varies depending on the type(s) of thermocouple used). It's compatible with type J, K, T, E, S, N, B and R type thermocouples, carries out all measurements with 0.2% + 1°C accuracy and has excellent resolution down to 0.1°C.

Applent AT420x Handheld Multi-Channel Temperature Meter Key Features

  • Choice of 3 models with 2, 4 and 8 channels
  • Compatible with type J, K, T, E, S, N, B and R thermocouples
  • Wide measurement range
  • High accuracy and excellent resolution
  • Sample rate: 500ms/ channel
  • Error correction for each channel
  • High and low beep function
  • TFT-LCD true colour LCD touchscreen
  • Cold junction compensation
  • Mini-USB interface
  • Broken thermocouple check
  • Powered by rechargeable batteries

What's Included?

  • Applent AT420x Handheld Multi-Channel Temperature Meter
  • 8x Thermocouples
  • ATL909 DC Power Adapter
  • ATL805 Lithium Battery
  • ATL105 Mini-USB Communication Cable
  • ATS42 Data Acquisition Softwar
Technical Specs

Part Code: AT4202

Applent AT420x Technical Specifications

Thermcouple Compatibility J, K, T, E, S, N, B, R
Accuracy 0.2% +1°C
Measurement Range Varies dependent on thermocouple used
Resolution 0.1°C
Channels 2 channels
Speed 500ms/channel
Correction Error correction for each channel
Comparator High and low beep function
Interface Mini USB interface

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Poorly designed and did not meet specs advertised

Review by James VG Hill (Posted on 12/06/2018)


On the plus side, this is a data logger rather than just a temperature meter.

When I purchased one, it was advertised with three scan rates, 0.1 sec, 0.5 sec and 1 second. What was not made clear is that, although the scan rate was supposed to be down to 0.1 sec ( 0.5 sec in the latest version, which was the one I actually received ), they failed to mention that the minimum record interval is only 1 second, with a maximum interval of 1 hour (3600 seconds).

The instrument comes with a standard USB port for a memory key but, according to the manual, an SD slot is an optional extra, which was not advertised when I bought my one. The latest manual suggests that it may now come with a SD slot as standard but no one has confirmed whether this is really the case. I would recommend the option of the SD, as the instrument’s soft case is a glove tight fit and you can’t use the USB key whilst it is in the case, where as the it could remain in the case with the SD card.

I had two specific tasks for the instrument, neither of which would be for very long, so I didn’t want to spend too much on an instrument that was going to get minimum use.

The instrument has succeeded in the first instance and I have the useful data that I needed in order to resolve a large temperature swing on a particular heat pump installation – So that is a plus point for the instrument.

My other requirement was for a temperature analysis around the annulus of a micro gas turbine (which I design and build) and I really needed the 0.1 scan rate. The 1 second record interval is way to long, so the data is not as helpful as it should have been. – So for me this was a big negative point against the instrument.

It is horses for courses; as long as you don’t need to record very fast rates of change then this instrument basically represent fair value for money. If you need to record rates of change fast then I wouldn’t recommend this instrument.

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