Gossen MetraWatt METRAHit 28C light Operating Instructions Manual page 9

entered to the calibrator as a reference temperature. The cali-
brator and the device under test are connected with copper
wire.
Otherwise, the external reference temperature is entered in all
cases where temperature measurement at the device under
test is accomplished by means of a thermostatic reference
junction (end of the thermocouple equalizing lead).
!
Attention!
In this operating mode interference voltages must not
be applied to the calibrator jacks.
In the event of operating errors, such as the short-
term application of a high interference voltage, the in-
strument/calibrator is protected by a replaceable
fuse F3, see chapter 12.3.
Example ad a) Internal Reference Junction
CALIBRATOR
Output
– +
Terminal Block
Device to be calibrated
Example ad b) External Reference Junction
CALIBRATOR
Output
– +
Terminal Block
Device to be calibrated
GOSSEN METRAWATT GMBH
Selecting Sensor Type, Setting the Temperature Simulation Value
and Entering the External Reference Temperature
Temperature
measurement, e.g.
via multimeter with
temperature sensor
sens0r
B, E, J, K, L
N, R, S, T, U
TC
l
#"
Sensor
Selection
#"
l:0120.2
$ !
TC
2L
Temperature
Simulation Value
(... 2x)
e=tern
#"
intern
ref
extern
#"
E:000.0
$ !
ref
External
Temperature Value
°C
sele t
↵
ESC
(... 4x)
NUM ON
°C
E. 030. 0
↵
ESC
intern
temp
↵
ESC
(... 4x)
°C
temp
ESC
°C / °F
↵
↵
9