Maintenance mode, How to calibrate the analog output, Bulletin f-107-uxf3 – Dwyer UXF3 User Manual
Page 77
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4.11. MAINTENANCE MODE
4.11.1. How to calibrate the analog output
Description
z The calibration is performed so as to obtain 4mA and 20mA when the analog signal (4-20mA DC) output is 0% and 100%,
respectively.
z Connect an ammeter to Iout terminals as shown below. In the CURRENT CALIBRATION mode, select 4mA or 20mA, and operate the
key (UP) or the
key (Down).
+
-
Ammeter
12
13
GND HF2
11
HF1
10
GND
9
8
-
+
For actual keying, refer to the typical operation indicated below. Set the parameter protection to OFF beforehand. (See Section 4.4.1.)
Operation
(example)
Adjust the 4mA and 20mA analog outputs.
Key operation
Description
Display
ź
Press the
key 4 times to display “MAINTENANCE MODE”.
MAINTENANCE MODE
ENT
ź
Press the
ENT
key once to display “RAS INFORMATION”.
RAS INFORMATION
0000000000000000
ź
Press the
key once to display “CURRENT”.
CURRENT
CALIBRATION
ENT
ź
Press the
ENT
key twice to enter the calibration mode of 4mA output.
Adjust the output to 4mA by the
(UP) and the
(down) key, while
observing the output of calibration devices such as an ammeter.
CALIBRATION
4 mA
Press the
ENT
key once to register the adjustment result.
CALIBRATION
COMPLETE
Ļ
ENT
ź
ź
ź
ź
ʊʊʊ 4mA adjustment result has been registered. ʊʊʊ
CALIBRATION
4 mA
ź
Press the
key once, and select 20mA.
CALIBRATION
20mA
ENT
ź
Press the
ENT
key twice to enter the calibration mode of 20mA output.
Adjust the output to 20mA by the
(UP) and the
(down) key.
CALIBRATION
20mA
Press the
ENT
key once to register the adjustment result.
CALIBRATION
COMPLETE
Ļ
ENT
ź
ź
ź
ź
ʊʊʊ 20mA adjustment result has been completed. ʊʊʊ
CALIBRATION
20mA
ESC
Press the
ESC
key twice and then press the
key once to enter the
measurement mode.
0.000 %
0.000 m3/h
Bulletin F-107-UXF3