Delmhorst Instrument FX-2000 - Manual (Page 6)

If you check the calibration and the display does not read
“12,” it is likely an indication of a low battery. If this
occurs, replace the battery with a new one immediately.
Continued use with a low battery may cause the meter to go
out of calibration. If you have a fresh battery and the instru-
ment still does not indicate an acceptable calibration, return
it to DELMHORST for service. See
Service for Your Meter
section.
A hard Reset is required if after changing the battery, the
display is frozen.This is sometimes caused by the interruption
of contact between the battery and battery lead wire. Resolve
this as follows:
Disconnect the battery. Press and hold the Read key for 15
seconds. Release the Read key. Press and hold the Check key
for 15 seconds. Release the Check key.
Connect a fresh battery to the lead wire in a single action,
making sure to align the poles properly and without inter-
rupting contact. If the display remains frozen, repeat the
procedure. If this procedure does not solve the problem, refer
to the Service For Your Meter section.
CHANGE THE SET-POINT
h To change the set-point value press the set-point increase
key
$
. The meter will display the current set-point value.
h To scroll forward to a higher value, hold the set-point
increase key
$
while the current value is displayed and
scroll up to the set-point value desired.
h To scroll backward through the set-point values, press and
release the set-point increase key
$
. Within one second
press and hold the set-point decrease key
#
.
h Continue to hold the set-point decrease key
#
and the
set-point value will decrease.
h When scrolling in either direction, release the button to
stop at your desired set-point.
If the meter reads a %MC higher than that of the set-point,
a buzzer will sound.
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