Teledyne GFC-7000T - Trace CO2 Analyzer - manual User Manual
Page 151
Operating Instructions
Model GFC7000TA Carbon Dioxide Analyzer
Teledyne Analytical Instruments
133
DIAG AIO
CONC_OUT_2 SPAN: 10000 mV
U100 UP10
UP DOWN DN10
D100
ENTR EXIT
DIAG AIO
AUTO CALIBRATING CONC_OUT_2
DIAG AIO
AIN CALIBRATED:
NO
SET>
EDIT
EXIT
DIAG
ANALOG I / O CONFIGURATION
PREV
NEXT
ENTR
EXIT
FROM ANALOG I/O CONFIGURATION MENU
DIAG AIO
CONC_OUT_2 RANGE: CURR
<SET
SET>
EDIT
EXIT
DIAG AIO
CONC_OUT_2 CALIBRATED: NO
< SET
CAL
EXIT
DIAG AIO
CONC_OUT_2:CURR, NO CAL
< SET SET>
EDIT
EXIT
Press SET> to select the analog output channel
to be configured:.
Increase or decrease the current
output by 100, 10 or 1 counts.
The resulting change in output
voltage is displayed in the upper
line.
Continue adjustments until the
correct current is measured with
the current meter.
DIAG AIO
CONC_OUT_2 ZERO: 27 mV
U100 UP10
UP DOWN DN10 D100
ENTR EXIT
EXIT
ignores the
new setting, ENTR
accepts the new
setting.
DIAG AIO
CONC_OUT_2 CALIBRATED: YES
< SET
CAL
EXIT
DIAG AIO
CONC_OUT_2 ZERO: 9731 mV
U100 UP10
UP DOWN DN10 D100
ENTR EXIT
DIAG AIO
CONC_OUT_2 CURR-Z: 0 mV
U100
UP10
UP DOWN DN10 D100
ENTR EXIT
The instrument attempt to automatically calibrate
the channel … then beep.
DIAG AIO
CONC_OUT_2 D/A/ CAL ERROR
EXIT
If a current meter is not available, an alternative method for calibrating the current loop outputs is to
connect a 250
1% resistor across the current loop output. Using a voltmeter connected across the
resistor, follow the procedure above but adjust the output to the following values:
Table 6-21: Current Loop Output Calibration with Resistor
Full scale
Voltage for 2-20 mA
(measured across resistor)
Voltage for 4-20 mA
(measured across resistor)
0%
0.5 V
1.0 V
100%
5.0 V
5.0 V