YOKOGAWA WE440, User Manual

Page: 32 / 67

<4. Analyzer Hardware Configuration and Calibration>
4-3
IM 12Y18A04-01EN 1st Edition : Oct. 04, 2019-00
4.6 Analog Outputs Calibration
The analyzer has two isolated analog outputs. The outputs are rated 0/4-20mA with a maximum
load of 900 ohms. They can be independently calibrated.
From the MAIN MENU, follow the sequence:
MENU → SERVICES → HARDWARE SETUP → CALIBRATE ANALOG OUTPUTS
The user is asked to connect a 900 ohms resistor to each two analog outputs. The calibration
requires the use of a current meter (0–100 mA range) placed in series with the output under test.
The user may select one output at a time for calibration. The calibration starts by adjusting the
full scale to 20 mA. The -/+ buttons are used to adjust the output to 20 mA. The instrument waits
for the user to confirm the calibration by pressing ENTER. If there is no user response within 90
seconds, the analog output procedure calibration is aborted.
Upon successful calibration of one of the analog outputs, the user has the choice of calibrating
the second analog output.
The calibrated values for the analog outputs are not available for editing. For testing the
calibrated outputs use:
MENU → SERVICES → DIAGNOSTICS → ANALOG OUTPUT → CHANNEL–1:
By pressing ENTER the user may select the signal level from the following settings:
0, 4, 10, 12, and 20 mA