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Model 2200D/P91 Page 19
e) Press RUN to return to on line or press CALL to proceed to another item in the
Utility Menu.
7.5 Adjust 4-20 mA Output
7.5.1 It may be desirable to fine tune the 4-20 mA isolated output to take into account the
characteristics of your particular loop. Before deciding that the adjustment is
necessary, be aware of the "Output High" and "Output Low" settings you may have
programmed as described in Section 5.4. The following method involves a high and
low calibration and requires the use of a Digital Multimeter (DVM). Proceed as
follows ignoring the instrument display.
a) Turn off the power to the instrument. Connect your DVM to the 4-20 mA output
terminals on the power supply board.
b) Turn on the power. Enter the Utility Menu as described in 7.2.1.
c) Press CALL to indicate CALIBRATION, which is "4-20 mA Output adjust, low" in
the Utility Menu (See table in 7.2.2.) Now use the arrow keys to make your
DVM read 8 mA. Press ENTER twice to confirm.
d) Press CALL to indicate TEMPERATURE, which is "4-20 mA Output adjust,
high" in the Utility Menu (See table in 7.2.2). Now use the arrow keys to make
your DVM read 16 mA. Press ENTER twice to confirm.
e) Press RUN to return to on line or press CALL to proceed to another item in the
Utility Menu.
7.6 Altitude Compensation
7.6.1 The instrument can be compensated for the altitude at which it is located by the
following procedure:
a) Go to the UTILITY MENU as described in 7.2.1.
b) Press CALL to indicate “STATUS” which is “ALTITUDE COMPENSATION” in
the Utility Menu.
c) Adjust the display to your altitude in thousands of feet. For example, 0.34 on
display corresponds to an altitude of 340 feet. Press ENTER. The display will
flash until ENTER is pressed again to confirm entry.
d) The supported altitude range is from –1,000 to 30,000 ft. (-305 to 9,144 m) or –
1.00 to 30.00 on the display. As shipped from the factory the altitude is set to
zero. i.e. sea level.
e) Press RUN to go on line, or CALL to proceed to another Utility Menu item.
8.0 DIAGNOSTICS
8.1 Description
8.1.1 The 2200D has diagnostic features which alerts the operator to invalid entries and
memory loss. Invalid entries are indicated by the flashing of the appropriate menu
LED. The flashing will commence after RUN is pressed and will continue until the
errors are corrected. Memory loss is indicated by the flashing of TEST and by the
alarm relay if enabled by DIP Switch No. 5 of Bank S1. See Section 4.8.3.
8.2 Invalid Output
8.2.1 Invalid output will be indicated if the expanded range is less than 10% of full scale.
To correct, refer to Section 5.4.
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