ADM-870C 07/14/0913
NO LIGHT/BATTERY/TOO LOW
This sequence of messages indicates that the battery charge is low and the back-light 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.
NOT ALLOWD
This message is displayed if the user tries to select STORE mode while in TREND mode.
NP 0
This message is displayed when a stored NEG PITOT reading is accessed using a RCL 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 factory
if 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.
OVER VEL
This display advises the operator that the velocity measurement being attempted is beyond the range of the meter.
OVER VEL may also be displayed if internal voltage settings are out of proper range. (Contact factory if meter
continues to read OVER VEL at inappropriate times).
PITOT TUBE
This signal will be flashed when the pitot tube mode is selected, and also upon each subsequent operation of the
READ key.
PRINT MEM?
This message is displayed when the operator has selected the print mode by pressing the STORE key, followed by
the MODE key. If an appropriate printer is connected to the RS232 jack and the READ key is pressed, the entire
contents of the memory will be downloaded to the printer. This message is also displayed whiled readings are being
downloaded to a computer using HyperTerminal.
PRINTING
This message is displayed when the operator is printing readings from memory by selecting PRINT MEM? and then
pressing the READ key.
PROBE
This message is displayed following SHIFT/SHIFT if the TemProbe is connected.
RATIO ERR
This message advises the operator that the backpressure compensated air flow measurement, which is in process,
is invalid because the numerical ratio of the two parts of the measurement sequence exceeds the predetermined
limits. Normally, this means that the operator has made a procedural error, or that a dynamic change (such as a
changed damper setting) has occurred between the two parts of the backpressure compensated air flow
measurement process.
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