ADM-870C 07/14/095
velocity measurements. A retractile cord connects the TemProbe or the MultiTemp to the temperature input jack
for remote temperature sensing.
RESET SWITCH
The reset pushbutton switch is on the back of the meter in a recess near the upper left corner. This switch is used
to reset the meter in the unlikely event that the microprocessor becomes lost in its program. This may occur if the
meter is dropped, and may cause the keypad to become nonfunctional until the meter is reset. If the meter continues
to fall into "lockout", it may have been damaged, and should be returned for repair. Press the reset switch once to
restart the meter. Do not hold the switch down or press the switch twice in close sequence.
Information stored in memory will be saved in blocks of 50 readings if the meter must be reset while readings are
in memory. If the meter was turned off, then on again while readings were in memory, but prior to resetting the
meter, all readings saved prior to turning the meter off will remain in memory after the meter is reset.
PNEUMATIC PRESSURE INLETS
Two pneumatic pressure inlets positive (+) and negative (-) are centered on the back of the meter at the top edge
and may be connected to various pressure sources for the measurement of air velocity, flow, or pressure. Sources
include the FlowHood, AirFoil probe, VelGrid, pitot tubes, static pressure probes, or any other pressure source not
exceeding the safe limits for the meter. The negative (-) inlet senses the static pressure during flow or velocity
measurements, and also is used for direct absolute pressure measurements.
SERIAL PORT JACK
When viewed from the front, the serial port jack is centered on the right side of the meter just below the battery
charger jack. The circular plug of a custom RS232 serial cable is connected here. The other end of the cable
provides a standard DB9 connection for a printer or computer.
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