F:\MARKETING\TECHNICAL MANUALS\Air Samplers\DF Battery TECH MANUALS\DF-75 LPM SERIES.doc
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11
OPERATING FEATURES and INSTRUCTIONS (Cont.)
The Digital Flowmeter:
The Digital Flowmeter (DFM) is the control panel of the air sampler. Through the DFM, the operator
activates the features of the instrument, as well as monitor the flow parameters.
The keypad for the DFM series of air samplers has the following features:
1.
Four keypad buttons
2.
6 character LED display of 0.5 inch (1.2 cm) height
3.
Label indicating the engineering units for the flow represented by the digits
displayed by the LED
These engineering units are factory set and can not be changed in the field.
Flow / Volume: SLPM / SL
UNITS
