Hameg HM8112-3 Benutzerhandbuch Seite 57

Overview of menu structure – part 2
Math-Menu
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5: Math
Starting / Stopping the data logger, dumping the test series
6: LOGGER
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Dump
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Dumping the test series
Interface: selecting the baud rate
7: Com
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Calibration
8: Cal
This area is protected by password
Scanner, choice of the channel
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9: Mux
of 0° C, connected with the closed end to the measuring point,
and the reference put into the ice bath. The closed end of the
thermocouples can be connected with standard measurement
cables to the terminals of the HM8112-3.
2nd: Comp PT-Front
The temperature measured with a platinum sensor is the re-
ference for the measurement used with the thermocouples. If
several thermocouples will be attached to the HM8112-3 via a
scanner, the use of the ice bath would be necessary for each
thermocouple. To overcome this, the ambient temperature or
even a source with a constant temperature is taken as the refe-
rence (e.g. ice bath, heated reference). If "PT-Front" is seleced
by pressing MENU 18 the function δPT will be activated. Now
2- or 4-wire measurement can be chosen. Then the reference
temperature is measured with a platinum sensor and assumed
by confirmation with button MENU
rement the PT-sensor can stay connected to the thermocouple.
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MENU
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MENU
MENU
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MENU
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MENU
18 . In case of 2-wire measu-
C o n t r o l e l e m e n t s a n d d i s p l a y
Off
Lo Limit
Hi Limit
Offset
Start
Stop
Dump
00000 ➡
ENTER
ENTER
ENTER
ENTER
MENU
by
Rs19200
Rs9600
Off
empty
Chanal 1
. . . .
Chanal 8
For 4-wire measurement it has to be disconnected and replaced
by the connection of the thermocouple.
3rd: Comp 23° C/ °F
A temperature of 23° C is specified as reference. For measure-
ments of high temperatures the resulting measurement error
can be neglected, unless the open end of the thermocouple
is on the level of the ambient temperature. The ambient tem-
perature should be about 23° C.
4:Info
In this menu item all instrument information is available:
Version: Display of revision number of the software
Ser-Nr: Display of the intrument's serial number
Cal date: Display of the date of the last calibration.
5: Mathematics
Analysis of different characteristics of the measured values
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MENU
default
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MENU
default
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Wert1 00001
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Wert2 00002
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Wertn 0000n
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Storage End
ESC
or leaving menu
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MENU
last setting
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MENU
default
Subject to change without notice
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