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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 toselect 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.
Advantages
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.
Specifications
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 yearsat 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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