ADM-880C 07/20/0914
This message sequence is displayed when a change in setup would invalidate the result in incompatible readings.
MODE / UNITS
This message sequence is displayed when the ASSOCIATED function has been selected. It is followed by a display
of the measurement mode and units for that particular reading.
NEG PITOT
This message indicates an invalid, negative, pitot tube velocity reading. This may result from reversed tubing
connections to the meter, or from other conditions described in the section on PITOT TUBE VELOCITY
MEASUREMENT.
NO FLAPS
This message advises that the flaps plug on the FlowHood has not been connected to the meter for air flow
measurements. The meter senses the position of the flaps through the flaps plug.
NO LIGHT
This message will appear as part of the [NO LIGHT / BATTERY / TOO LOW] sequence, when the battery charge
is too low to support use of the backlight.
NO LIGHT / BATTERY / TOO LOW
This sequence of messages indicates that the battery charge is low and the backlight may not be used until the
batteries are recharged.
NO PROBE
This message appears when the operator has neglected to install the TemProbe sensor prior to initiating a
temperature measurement. This term is also displayed if the TemProbe or extension cord has been damaged so
as to create an open circuit.
NO READING
This is part of the ASSOCIATED READING sequence and is displayed when an associated reading is not available
for that type of primary reading.
NO STATS
This message is displayed when the VIEW key is pressed while there are no readings in memory.
NOT A GRP
This message is displayed when an empty memory group is selected using the ALT /
=SCAN function.
NOT ALLOWD
This message is displayed if the user tries to select the STORE mode while in TREND mode and in sequence with
other messages to indicate that a selected function is not available.
NP 0
This message is displayed when a stored negative pitot tube reading is viewed using a SCAN key.
OPEN FLAPS
This message advises that the operator has attempted to perform a nonbackpressure compensated air flow
measurement at greater than 500 cfm with the flaps closed. The flaps must be opened to proceed.
OVER FLOW
This display advises the operator that the air flow measurement being attempted is beyond the range of the meter.
OVER PRES
This display advises the operator that the pressure measurement being attempted is beyond the range of the meter.
[OVER PRES] may also be displayed if internal voltage settings or linearity is out of proper range. (Contact the
factory if the meter continues to read [OVER PRES] at inappropriate times).
OVER TEMP
This display advises the operator that the temperature measurement being attempted exceeds the upper range of
the meter.
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