Calibrating Current Outputs - Emerson Clarity II Instruction Manual

MODEL CLARITY II

6.8 CALIBRATING CURRENT OUTPUTS

6.8.1 Purpose
Although the analyzer outputs are calibrated at the factory, they can be trimmed in the field to match the reading
from a standard current meter. Both the low (0 or 4 mA) and the high (20 mA) outputs can be trimmed.
6.8.2 Procedure
C C a a l l i i b b r r a a t t e e
Program Display
Calibrate?
Sen1 Sen2
Calibrate?
Sensor
Calibrate?
O O u u t t p p u u t t 1 1
Output2
4mA Output N Cal
Meter: 0 0
4mA Output N Cal
Meter: 2 2
1. Press the MENU key. The main menu appears. Choose Calibrate.
Hold
2. Choose Output.
O O u u t t p p u u t t
O O u u t t p p u u t t
3. Choose Output1 or Output2. For a single input analyzer, this screen
does not appear.
4. Connect a calibrated milliammeter across the out put terminals. Use the
arrow keys to change the reading in the second line to match the current
4.00mA
measured by the ammeter.
5. Connect a calibrated milli-ammeter across the out put terminals. Use the
arrow keys to change the reading in the second line to match the current
0.00mA
measured by the ammeter.
6. The display returns to the screen in step 2. To return to the main display,
press MENU then EXIT.
SECTION 6.0
CALIBRATION
45