Dwyer UXF2 - Manual (Page 89)

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4.7. Maintenance mode
4.7.1. How to calibrate the analog output
Description
z
The calibration is performed to output 4 mA and 20 mA when the analog signal (4-20 mA DC) output is 0%
and 100%, respectively.
z Connect an ammeter to Iout terminals as shown below. In the CURRENT CALIBRATION mode, select 4 mA or
20 mA, and operate key (UP) or key (Down).
+
-
+
Iout
Ammeter
+
DO1
+
DO2
-
Iout
-
DO1
-
DO2
For actual keying, refer to the typical operation indicated below. Set the parameter protection to OFF beforehand
(Section 4.4.1).
Typical operation Calibrate the output of 4 mA and 20 mA.
Keying order Description Indication
ź
Pressed 4 times to indicate "MAINTENANCE MODE". MAINTENANCE MODE
ENT
ź
Pressed to indicate "CURRENT CALIBRATION". CURRENT
CALIBRATION
ENT
ź
Pressed twice to select the calibration mode for 4 mA.
(When the cursor blinks, 4 mA of current is outputted.)
Then, press (UP) or (Down) key so as to
obtain 4 mA, watching the reading on ammeter or other
calibration instruments.
CURRENT
4 mA
Pressed to register the calibration result. CURRENT
½½ COMPLETE ½½
Ļ
ENT
ź
ź
ź
ź
--- 4 mA calibration registered.--- CURRENT
4 mA
ź
Pressed to select 20 mA. CURRENT
20 mA
ENT
ź
Pressed to select the calibration mode for 20 mA.
(When the cursor blinks, 20 mA of current is outputted.)
Then, press (UP) or (Down) key so as to
obtain 20 mA.
CURRENT
20 mA
Pressed to register the calibration result. CURRENT
½½ COMPLETE ½½
Ļ
ENT
ź
ź
ź
ź
--- 20 mA calibration registered.--- CURRENT
20 mA
ESC Press ESC key twice, and key once to resume
the measurement mode.
0.000 m/s
0.000 m3/h
BULLETIN F-70