STATUS SCIENTIFIC CONTROLS
Installation, Commissioning & Routine Gas Testing
FGD10A-M Gas Detector
TD18/032
Issue:
10
Change Note:
1869
Page 33
9.1.5. 4
– 20 mA Current Loop
The analogue output is that of a current source. In order to calibrate the
output it is necessary to monitor the output signal. This can be performed as
follows:
Connect an ammeter (or multi-meter set to measure current in the mA range)
in series with the analogue output.
Note: the 4mA range should always be set prior to adjusting the 20 mA range
•
From the menu system select menu option:
Loop 4 mA
or
Loop 20 mA
and press ENTER.
Set 4 mA
Edit
Set 20 mA
Edit
•
Using the
buttons to increase / decrease the loop current
•
Press ENTER to accept the new loop current setting,
will be displayed
Note: Pressing MENU instead of ENTER leaves the setting
unchanged.
•
Press the MENU button to exit the loop current option menu.
On exit the display will show
if no changes have
b
een made or if changes have been made.
–
+
FGD10A-M
Analogue Output
(4
– 20mA)
Meter
mA
+
Meter range:
0.004A
– 0.020A
4mA
– 20mA
Updated
No change
Data updated
