Choose wireless for your thermocouple

Data logger for thermocouple

Newsteo Logger LGR37, wireless data logger for  thermocouple

The Newsteo Logger Thermocouple is a device which enables to connect a thermocouple probe to oversee at distance the temperature of an environment. Thanks to its compact design and its high autonomy, it makes easier the supervision in environments where temperature is a crucial factor. The Newsteo Logger Thermocouple can transfer the data directly on a monitoring computer by radio frequencies or can store the data in its memory.

  • LGR37 : temperature data logger for thermocouple

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Where the measurements will be displayed ?

2 choices to create your wireless sensor network:

  • Local single-site solution: you have a small installation (some dataloggers, located near the supervisory position). In this case, the RF Monitor software is appropriate. You install this software on a computer and connect the RF-to-USB Key (radio receiver, provided by Newsteo) to a USB port.

    > More about single-site solution


  • Multi-site solution with remote monitoring: you want to display the measurements of your dataloggers via different PCs located in different sites. The Newsteo Cloud offer allows you to send all the measurements of your recorders to the cloud and access it through a Web application, Webmonitor.

    > More about multi-sites installations

Who uses the LGR37, thermocouple temperature datalogger?

  • Thermocouples users: move from a wired connection to a wireless connection, safer, faster to install and less expensive
  • Extreme temperatures: ovens…
  • Thermal flow sensor: measurement of heat transfer through any surface. It can thus be used to assess the quality of an insulation, textile …

How does it work?

Installing recorders / Data Loggers

Technical specifications of the Newsteo Logger for thermocouple


Newsteo Logger for Thermocouple



Measuring Range

100 % of the selected thermocouple range.


0.1 to 0.5 °C, without sensor’s accuracy


0,04 °C to 0,23 °C depending on the thermocouple

Operating temperature

-40°C to +85°C

Cold Junction Temperature

Measured through a temperature sensor integrated on the electronic board.

Measurement frequency

Can be set from one measure every second to one every 4 hours

Memory Capacity

Up to 32 256 measurements with date and time.

Measurement securisation

Acknowledgment process between the transmitter and the receiver to ensure that no data is lost during radio transmission
Back-up of the last 32.000 measurements in Logger memory even after transmission to the receiver

Sensor connection

either via the already integrated in the probe connector (probes provided by Newsteo)
either via a connector to order to Newsteo (for client’s probes).
> Newsteo Probes and connector


COFRAC on order


AA Lithium Thionyle (3,6V) included, special design with plug to maintain the battery
Accessible and user replaceable battery
Optional: dual battery pack to double battery life


Up to 3 years (at 25°C with a frequency measure of 15 minutes)

See Battery life model


98mm x 64mm x 34mm

Weight with battery




IP level


Radio frequency

ISM 868 MHz

Radio range

Up to 900 meters (with supplied antenna)


1/2 wave antenna

Thermocouple probes Newsteo Logger LGR37


  • K type Thermocouple with 250 mm probe, class A
  • Measurement range: -100°C to +1100°C
  • Accuracy: class A : ± 0.004*temperature or ± 1.5 °C (take the biggest imprecision at the considered temperature )
  • Supplied with the connector allowing to connect it to the Newsteo Logger LGR37 (CON05)


  • K Type Thermocouple
  • Measurement range: -75°C to +250°C
  • Cable length: 5 meters
  • Accuracy: A class : ± 0.004*temperature or ± 1.5 °C
    (take the biggest imprecision at the considered temperature)
  • Supplied with the connector allowing to connect it to the Newsteo LGR37 (CON05)


  • Probe for thermal flux
  • 50x50mm
  • Resolution 0.60W/m2.


  • Connector to connect the thermocouple of your choice (K, T) to the Newsteo Logger.

Evaluate the newsteo logger thermocouple

This kit enables you to estimate the Newsteo Logger Thermocouple.
The kit is made of:

  • A Newsteo Logger LGR37
  • A Thermocouple type K probe (STC01-002)
  • A RF-to-USB Key medium-range (¼ wavelength antenna integrated)
  • A CD-ROM containing the installation of the RF Monitor software with USB drivers, the application software of the Logger which enables the restoration of the recorded measures, and the documentation.

Price of the kit: 520 EUR excl. VAT, preparation and shipping costs in addition.