20
Step 7b.
Press the
HOLD/mode
key to accept the decimal point and the meter will display
the decimal point with zeros.
Press the
HOLD/mode
key to move the numbers down (-).
Step 8.
Enter a calibration data point. Enter a number b31999 and -9999.)
Note:
The pressure or voltage/current must be applied to the appropriate channel
before entering this data point.
Caution: Do not try to calibrate Channel One of the DATUM 2000™ manometer
with a voltage input, this will damage the unit and void the warranty. Never apply
a voltage signal to the Channel One inputs (see page 14).
Press the
SCAN/adj
key to move the numbers up (+).
When the desired number is reached, press the
SCAN/adj
and
HOLD/mode
keys at
the same time. The number will flash repeatedly. Then, press the
SCAN/adj
key to
readjust the number or the
HOLD/mode
key to accept it. After the calibration data
point has been accepted, the meter will display "bUSY" for 10 seconds and then
display zero. The second data point may be entered.
**Set up wiring for second calibration point. The meter is programmed to allow
unlimited time for this wiring. It will not default to normal operating mode. If using
the internal reference voltage, the -IN and ground should be shorted, pin 7 and
pin 9 (CH2: pin 13 and 15). The reference voltage (either contact of the 2 pin blue
connector located behind the terminal strip) should be connected to the +IN, pin 6
(CH2: pin 12).
