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INTRODUCTION
The 3000 Series dry-well heat sources allow users to check the accuracy
of thermometers and sensors as a system, on site, without the need for
heavy, expensive equipment. The dry-wells are high accuracy portable
heat sources that are extremely easy to use. Simply plug in, switch on
and set the dry-well to the temperature that you wish to check, insert
your probe into the correct size well and take the reading. Compare the
temperature reading of your thermometer and probe to the displayed
temperature of the dry-well and the difference is the error of your
instrument. For optimum accuracy and UKAS traceability use an ETI
Reference Thermometer or similar to make comparison measurements.
The 3000 Series dry-wells are controlled by a closed loop microprocessor
based digital PID temperature controller system incorporating a heater
and a precision platinum RTD sensor housed in the aluminium block.
Fan cooling allows rapid changes in well temperature upon demand.
The required temperature may be adjusted in 0.1 °C increments across
the range of the instrument using the buttons on the front panel.
These units are ideal for use in a variety of industrial and process
applications. Each unit is supplied with a traceable certificate of
calibration showing actual test data, which can be used as part of quality
assurance programmes.
SAFETY
Operate dry-wells in an ambient temperature between 10 and 30 °C
(15 to 25 °C for optimum accuracy) and humidity between 5 to 95 %
(non condensing). The fan runs continuously to moderate the internal
unit temperature. Always ensure the air vents and fan aperture are clear
and have at least 150 mm of space between them and any obstructions.
NEVER cover the unit while in operation or operate if the fan stops. If
the equipment is used in a manner not specified by the manufacturer,
the protection provided by the equipment may be impaired.
!
The calibrator can operate at very high temperatures. Precautions
MUST be taken to prevent personal injury or damage to
surrounding objects. Probes may be hot when removed from the unit
and should be placed on a heat resistant surface. The unit may remain
hot for several minutes after switching off. DO NOT switch off at
temperatures above 100 °C. Allow to cool before storage.
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