Table 4-14. Current Loop Output Calibration With Resistor - Teledyne T101 Operation Manual

Operating Instructions
FROM ANALOG I/O CONFIGURATION MENU
DIAG ANALOG I / O CONFIGURATION
PREV NEXT
DIAG AIO AIN CALIBRATED: NO
SET>
EDIT
Press SET> to select the analog output channel
to be configured:.
DIAG AIO CONC_OUT_2:CURR, NO CAL
< SET SET> EDIT
DIAG AIO CONC_OUT_2 RANGE: CURR
<SET SET> EDIT
DIAG AIO CONC_OUT_2 CALIBRATED: NO
< SET CAL

Table 4-14. Current Loop Output Calibration with Resistor

FULL
SCALE
0%
100%
94
To adjust the zero and span values of the current outputs, activate the ANALOG I/O
CONFIGURATION MENU (see Section 4.6.3), then
DIAG AIO
ENTR
EXIT
EXIT
DIAG AIO
U100
DIAG AIO
U100 UP10 UP DOWN DN10 D100
EXIT
DIAG AIO
U100 UP10 UP DOWN DN10
EXIT
DIAG AIO
U100 UP10 UP DOWN DN10 D100
EXIT
DIAG AIO
If a current meter is not available, an alternative method for calibrating the current loop
outputs is to connect a 250 Ω ±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:
VOLTAGE FOR 2-20 MA
(measured across resistor)
0.5 V
5.0 V
The instrument attempt to automatically calibrate
the channel ... then beep.
AUTO CALIBRATING CONC_OUT_2
CONC_OUT_2 CURR-Z: 0 mV
UP10 UP DOWN DN10 D100
CONC_OUT_2 ZERO: 27 mV
CONC_OUT_2 SPAN: 5000 mV
D100
CONC_OUT_2 ZERO: 4921 mV
CONC_OUT_2 CALIBRATED: YES
< SET CAL
VOLTAGE FOR 4-20 MA
(measured across resistor)
Teledyne ML – T101 Operation Manual
press:
ENTR EXIT
Increase or decrease the current
output by 100, 10 or 1 counts.
ENTR EXIT
The resulting change in output
voltage is displayed in the upper
Continue adjustments until the
correct current is measured with
the current meter.
ENTR EXIT
EXIT ignores the
new setting, ENTR
ENTR EXIT
accepts the new
EXIT
1.0 V
5.0 V
line.
setting.