Sper Scientific 840064 Vacuum Meter - Manual (Page 4)

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3. OPERATING INSTRUCTIONS - See item 2 on page 3 for button
locations and description.
3-A. NOTES - READ BEFORE FIRST USE
•
Do not insert objects into the Sensor Input (9) or the diaphragm
can be damaged and the warranty voided.
• The sensor is compatible with industrial gases and liquids that are
also compatible with ceramic material.
• The sensor must be attached to the meter in order to display the
ambient barometric pressure (in/Hg). Otherwise, "0" will be dis-
played.
•
3-B. MEASUREMENT PROCEDURES
•
Connect the Probe Plug (11) to the meter's Input Socket (4).
• Press the Power (2) button to turn on the meter.
• Press the Unit (7) button to select one of the eight units of measure:
torr, mm Hg, micron (
uH9), mbar, KPa (- - PA), PA, inch Hg (in/Hg),
or PSI.
• Remove the protective cap and connect the threaded Sensor Input
(10) to the vacuum source to be measured.
• The measurement will appear on the Display (5).
3-C. HOLD
• Press the Hold (6) button during measurement to freeze the
displayed reading. "HOLD" and the reading are displayed.
• Press the Hold (6) button a second time to resume measurement.
3-D. MAXIMUM / MINIMUM RECORDING
•
Press the Max/Min (3) button once. The LCD display will indicate
"REC" as the data recording function begins.
• Press the Max/Min (3) and "REC Max" (along with the maximum
recorded reading) will appear on the LCD display.
• Press the Max/Min (3) again and "REC Min" (along with the
minimum recorded reading) will appear on the display.
• Press and hold the Max/Min (3) for approximately 2 seconds to exit
this function and resume measurment.