YOKOGAWA ISC450G User Manual

39
IM 12D06D05-01E
6
CALIBRATION
6-7. Temperature calibration
In order to make the most accurate measure-
ments, it is important to have a precise temper-
ature measurement. This affects the display of
temperature, and the output signal when used.
More important, however, is the temperature
compensation, and calibration accuracy.
The temperature of the sensor system should
be measured independently with a high preci-
sion thermometer. The display should then be
adjusted to agree with the reading (zero offset
calibrationonly).Forbestaccuracythisshould
be done as near to the normal operating tem-
perature as possible.
Press the keyandchoose“
Execute: Cali-
bration.
” Press “
Temperature calibration
” to
execute it.
6-8. Operation of hold function during cali-
bration
EXAxtISC450GhasaHOLD function that will
suspend the operation of the control/alarm re-
lays and mA-outputs.
During calibration, the user may choose to
enable HOLD so that the output signals are
frozentoa“
last
”or“
fixed
”value.Someusers
willchoosetoleavetheoutputs“
live
”torecord
the calibration event. This has implications
for pharmaceutical manufacture, for example,
where an independent record of calibrations is
mandatory.
Press to select Execute: “
HOLD
” and then
choose “
Manual Hold ON
” or “
Manual Hold
OFF
”.Thisallowsyoutosetupmanualhold.
Tocancelmanualhold,pressthelitHOLDsec-
tion on the Main display.
Press “
HOLD
” button on mainscreen, to re-
movetheHOLD.
TherouteforHOLDsetupis
Commissioning >> Output setup>> Config-
ure Hold

YOKOGAWA ISC450G Specifications

General

Brand	YOKOGAWA
Model	ISC450G
Category	Media Converter
Language	English