For crackmeter

For crackmeter 2018-02-28T18:02:09+00:00

Newsteo Logger LGS31 & LGP33, wireless datalogger for crackmeter

The Newsteo Logger LGS31 and LGP33 allows you to connect any potentiometric sensor. It is mainly used to transmform crackmeters into wireless crackmeters.. It records the measurement or transmits it by radio to the supervision centre. The installation and maintenance of the sensor are thus simplified.

2 references are available:

  • LGS31: wireless transmission and measurement system, 1 input.
  • LGP33:wireless transmission and measurement system, 3 inputs.

Sensors to connect:

  • Crackmeter,  linear displacement sensors
  • Extensometer
  • Pressure sensor
  • Photoresistance
  • Potentiometer for angular measure
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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 Newsteo wireless crackmeter dataloggers?

  • Crackmeter users: move from a wired connection to a wireless connection, safer, faster to install and less expensive
  • Instrumentation on site, geotechnical expertise: this solution is perfectly suited to the instrumentation of structures

How does it work?

Installing recorders / Data Loggers

Technical specifications of the Newsteo Logger for crackmeter

Product type

Data logger with potentiometric interface




LGS 31:  1 input
LGP33: 3 multiplexed inputs (channel delay time: 150ms) not deactivable, common power supply

Range of measure

1 KOhm … 65KOhm


Total sum of the errors : 1LSB max meaning ±3×10-3% (using Newsteo transfer functions)


1LSB (corresponds to the full scale of the sensor divided by 32768)

Response time

0,15s, Maximum measurement speed : 1s

Operating temperature

-40°C to +85°C


Integrated temperature sensor on the electronic board

Measurement frequency

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

Memory Capacity

Up to 32 768 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

Through connector available on the top of the logger
> Newsteo Sensors


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 estimation


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 (included)

Connection cables for data logger

PFPN-SES58-001 (for LGS31 & LGP33)

  • Cable to connect the sensor of your choice to the LGS31.
  • The cable is provided with fast contactors

Crackmeters for LGS31

Fissuromètre 0...10mm


  • Stroke : 0 …10 mm
  • IP40

It is necessary to also order a 5 meter cable  for connection to the data logger (PFPN-STI58-002).

Fissuromètre LGS31


  • Stroke : 0 … 25 mm 
  • IP67

It is necessary to also order a 5 meter cable  for connection to the data logger (PFPN-STI58-003).

Fissuromètre LGS31 IP65


  • Stroke: 0 … 50 mm
  • IP65

It is necessary to also order a 5 meter cable  for connection to the data logger (PFPN-STI58-004).

PFPN-FISSU-005 : Crackmeter –  Linear displacement sensor

  • Stroke: 0 … 25 mm
  • IP66
  • Supplied connected to a cable to connect directly to the Newsteo Recorder

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