Commissioning and operation
TP17 / TPM
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© SIKA • Ba_TP17-TPM_en • 01/2016
4.3.4
Micro bath calibrator
Type
TP17 200 TP17 165 TP17 166 TP17 450 TP17 650 TPM 165 TPM 225 TPM 255
Micro bath
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CAUTION! Risk of injury - Wear safety goggles!
Calibration liquid can be ejected when working with the micro bath calibrator.
Always wear safety goggles for the eyes when handling calibration liquids.
The micro bath is used for calibrating sensors with special shapes or dimensions. Direct
contact between the sensor and the calibration liquid ensures excellent heat transfer.
The calibration liquid is poured directly into the tank or into a tub insert (
p. 21).
The micro bath includes the transport cover, the work cover, the sensor cage, the magnetic
stirrer, the draining pump, the magnetic lifter and as an accessory, the tub insert. The
individual components are described below.
Transport cover:
The transport cover serves for secure closing of the micro bath. It prevents spillage of the
calibration liquid during transport.
CAUTION! Safety valve!
The transport cover is equipped with a safety valve, which is activated once
the pressure reaches ~1.5 bar. This can result in hot steam being released.
Always unscrew the transport cover before putting the micro bath into
service, in order to avoid excessive pressure.
Work cover:
The work cover fulfils various tasks during the operation.
•
It reduces the evaporation of the calibration liquid to a minimum.
•
It reduces the cooling on the surface of the calibration liquid.
•
It ensures stable positioning of the test specimens in the micro bath.
The work cover is screwed on to the micro bath and has five openings for
test specimens. The unused openings can be closed with suitable silicone
plugs.
Sensor cage and magnetic stirrer:
The sensor cage protects the magnetic stirrer. It prevents the sensors from
blocking the magnetic stirrer. The function of stirring is ensured by the
sensor cage.
IMPORTANT! Wearing part!
The magnetic stirrer is a wearing part.
Replace worn-out magnetic stirrers (
§ 8.1 "Maintenance").
The magnetic stirrer ensures a uniform temperature distribution in the
calibration liquid.
