E-023-2-E
3.7.4 Analog output adjustment (Trim Analog)
This adjusts the output value of the flowmeter converter
’
s analog output.
This function is for adjusting the values by outputting analog values equivalent to 4mA and 20mA
regardless of the processing state. If the flowmeter
’
s output is used to control valves or other such parts,
then for the sake of safety, change the control loop to manual control so that the control loop is in a state
whereby it is not influenced by the flowmeter
’
s output.
3.7.4.1 Analog output 1 adjustment (Trim Analog 1)
This adjusts the output value of the flowmeter converter
’
s analog output 1.
①
Click the "Diag/Service (T)" menu, and then select and click "Trim Analog 1" from the "Trim Analog"
drop-down list.
②
A message box (Fig. 135) will be displayed. Click the "OK" button to adjust analog output 1.
③
The following window will be displayed after the "OK" button is clicked (Fig. 136). Select the scale from
4 to 20mA for adjusting analog 1, or select another scale (Other scale), then click the "OK" button.
When the 4 to 20mA scale is used for adjustment, a standard ammeter is inserted into the analog output 1
output loop, and adjustment follows the method described in steps
④
to
⑦
.
When another scale is used, load resistance is inserted into the analog output 1 output loop, and
adjustment follows the method described in steps
⑧
to
⑫
(this description covers the situation where
R
L
=250 ohms will be inserted, with adjustment to both ends of the voltage value scale of 1 to 5V).
Fig.135
Fig.136