GHM GREISINGER Gourmet Thermometer, Руководство по эксплуатации

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H86.0.04.6C-01 Operating Manual Gourmet Thermometer Page 7 von 14
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3.3 Connections
BNC- socket:
connection for temperature probe
Usage of BNC plug:
Lock/ unlock with turnable ring at cable
socket
.
The connections are only waterproofed when a plug declared as waterproof is connected
4 Start operation
Be sure that suitable batteries are inserted (see chapter 10
Replacing batteries).
Turn device on via key “on/off”.
After segment test the device
displays some information about his configuration in the “auxiliary display”:
T.OF
If there are made a zero point correction for the temperature (see chapter 8 Adjustment of temperature input).
T.SL
If there are made a slope correction for the temperature probe (see chapter 8 Adjustment of temperature
input).
POFF
If “auto-power-off” is active - after the set time the instrument is switched off if no key is pressed (see chapter
7 Configuration).
When using interchangeable probes the accuracy of the whole measuring instrument can be
optimized with slope- and zero point correction. (see
chapter 8 Adjustment of temperature
input
).
Attention: If a correction is done this is only suitable for this specific probe.
After that the device is ready for measuring.
5 Basics of the measurement
5.1 Possible errors
5.1.1 Immersion depth
For measurements in liquids the probe should be immersed sufficiently deep (depending on probe
diameter, at least 20 mm with Ø 3 mm and 10 mm with Ø 1.5 mm) and subsequently stirred.
When measuring gases the probe should also emerge as deep as possible in the gas to be
measured (e.g. when measuring in channels/pipes) and the gas should flow around the probe at
sufficient flow.
5.1.2 Surface effects and bad heat transfer
For surface temperature measurements special surface probes are necessary. Surface quality, heat
transfer and ambient temperature have an influence on the measurement result.
5.1.3 Cooling (evaporation)
For air temperature measurements, the probe should be dry, otherwise it can be possible that a too
low temperature could be measured.
5.1.4 Response time
Before reading the measured value at the measuring process, it is necessary to wait a sufficient time
(see chapter 13 Specification
– Response time 90).