CFM-88L 07/20/093
3.0 EXTERNAL FEATURES
3.1 KEYPAD
Control Name Function
ON/OFF Turns the meter on or off.
MODE Sequential action for air flow, absolute pressure, temperature.
UNITS Alternate action for English or metric units.
READ Initiate a measurement; initiate or halt TREND readings.
' Turns the back-light on or off.
3.2 FEATURES ON SIDES AND BACK OF METER
BATTERY CHARGER JACK
When viewed from the front, the battery charger jack is on the right side of the meter toward the top. The battery
charger plug is to be connected here.
EXTERNAL READ JACK
When viewed from the front, the external read jack is on the left side of the meter toward the top. The plug for the
external thumbswitch is connected here. This feature allows the operator to trigger measurements from the
FlowHood handle while working overhead or in awkward circumstances. The thumbswitch performs the same
function as the READ key.
FLAPS JACK
The flaps jack is on the back of the meter, in the upper right hand corner. The flaps plug on the FlowHood is inserted
here.
TEMPERATURE INPUT JACK
The temperature input jack is centered on the back of the meter, slightly toward the top. The flexible TemProbe
sensor must be connected to this receptacle whenever temperature density correction is desired for air flow
measurements.
OFF/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.
PNEUMATIC PRESSURE INLETS
Two pneumatic pressure inlets positive (+) and negative (-) are centered on the back of the meter at the top edge.
These inlets are connected to the flow sensing grid with two 3/16 inch ID neoprene tubes.
To Next Page
Loading...
Need help?
General
