Posted in | Pressure Sensors

Making Temperature and Pressure Measurements with Keller UK’s Digital Fluid LEO Record (Ei) Instrument

LEO Record is an autonomous battery powered instrument consisting of a digital display which is used for recording temperature and pressure for a long period of time. The pressure is recorded and displayed once per second.

The top display represents the actual pressure, and the bottom display represents the record status. Two operating keys are present in all LEO record models. The first key is used for switching on the instrument to select the pressure units and functions. The second key is used for performing the functions chosen by the first key.

The instrument consists of Logger 5 software which is used for configuring and reading data loggers. The measuring values can be exported, graphically displayed, air pressure compensated or converted into other units. The logger consists of the reader and writer. The writer is used for starting and configuring the LEO Record. The reader is used for reading the data in a file and saving the data in a PC or PDA. A carrying bag and a protective rubber covering are available as optional accessories.


The advantages of the LEO Record are:

  • Ensures maximum data security due to the usage of a non-volatile memory
  • Stores the installation data of the measuring station
  • Simple and well-structured configuration
  • High measuring accuracy
  • High resolution and robustness
  • Pressure connection with G1/4” thread
  • Intrinsically safe versions are available.


The specifications of the LEO Record are given in the following table.

Diameter x Height x Depth (approx.) 76 x 120 x 55 mm (LEO Record) / 76 x 150 x 55 mm (LEO Record capacitive)
Battery kife up to 2 years at 1 recording every 10 seconds
Supply 3.6 V Lithium battery, type SL-760
Interface RS485; rear-sided mating plug “Fischer” compatible with PC-converter cable K103-A (RS232) and K104-A(USB)
Temperature measurements Accuracy typ. 0,5°C
Protection IP 65
Material in contact with media LEO Record: Stainless steel (AISI 316L), Viton® O-ring LEO Record capacitive: Viton O-ring, gold-coated ceramic diaphragm
Measuring cycle Adjustable (shortest interval 1 x per second)
Storage/Operating Temperature -10 to 60°C / 0 to 50°C

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