Sper scientific 840064 User manual

Vacuum Meter
840064
Instruction Manual

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TABLE OF CONTENTS
1. INTRODUCTION ...................................2
2. METER DESCRIPTION ..............................3
3. OPERATING INSTRUCTIONS
3-A PRECAUTIONS - READ BEFORE FIRST USE .........4
3-B MEASUREMENT PROCEDURE ....................4
3-C HOLD .........................................4
3-D RECORD, MAXIMUM, MINIMUM ...................5
4. BATTERY REPLACEMENT ...........................5
6. SPECIFICATIONS ..................................6
7. WARRANTY ......................................8
INTRODUCTION
Portable meter for absolute vacuum pressure measurements in
hospital labs, crystal growing, solvent recovery, distillation, and
rotary evaporation. Also used in HVAC, automotive and other
industrial applications. Includes a detachable heavy-duty probe
with ¼ PS connector for liquid, air, oil and gas.
Features a large display, min-max, hold, low battery indicator,
auto power o󰀨, and 8 units of measure: torr, mm Hg, micron, mbar,
KPa, PA, inch Hg, and PSI.
Comes ready to use in a foam-lined, hard-shell carrying case, with
9V battery and instructions.

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4
5
6
7
8
9
10
11
1
2
3
POWER HOLD
MAX/MIN UNIT
Unit:
mmHg mbar inch Hg psi
torr
(t orr)
micron
(uH9)
kpa
(- -PA)
pa
(PA )
SPER
SCIENTIFIC 840064
VACUUM METER
METER DESCRIPTION
1. Power Button 6. Unit Button
2. Max/Min Button 7. Battery Compartment (back)
3. Input Socket 8. Sensor Input
4. Display 9. Sensor Body
5. Hold 10. Probe Plug
1
2
3
4
5
6
7
8
9
10

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OPERATING INSTRUCTIONS
3-A. Precautions - 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 displayed.
3-B. General Measurement - See page 7 for range, resolution
and accuracy specications.
• Connect the Probe Plug (11) to the meter’s Input Socket (4).
• Remove the protective cap and connect the threaded Sensor
Input (9) to the vacuum source to be measured.
• 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.
• The measurement will appear on the Display (5).
• This meter has an automatic shut o󰀨 function in order to prolong
battery life. After approximately 10 minutes without activity (no
buttons pushed), the meter will automatically shut o󰀨. To disable
this feature, press the MAX/MIN (3) button once during
measurement. “REC” will be displayed.
• Press the POWER (2) button to manually turn the meter o󰀨.
3-C. Hold
• During the measurement procedure, press the HOLD (6) button
to freeze the current measurement.
• “HOLD” and the measured value are displayed.
• Press the HOLD (6) button again to exit this function.

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3-D. Record, Maximum, Minimum
• Press the MAX/MIN (3) button once to enter the recording mode.
• “REC” and the recorded values are displayed and
continuously updated.
• Press the MAX/MIN (3) button as needed to view the recorded Max
and Min values. “REC”, “Max” and the maximum recorded value or
“REC”, “Min” and the minimum recorded value are displayed.
• To exit the this function, press and hold the MAX/MIN (3) button
for about 2 seconds, the display reverts to the current reading.
4. BATTERY REPLACEMENT
• Replace the battery when the low battery icon is displayed.
• In-spec measurements may be made for several hours after the
low battery indicator appears.
• Use a small screwdriver to gently pry o󰀨 the BATTERY COVER (8).
• Replace the battery with a fresh 9V battery (alkaline or heavy duty).

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SPECIFICATIONS
Unit Range Resolution Accuracy
mbar 0 to 1500 mbar 1 mbar
± 1% Full Scale
(at 23°C ±5°C)
including linearity,
hysteresis and
repeatability
Kpa 0 to 150.0 Kpa 0.1 Kpa
Pa 0 to 150,000 Pa 100 Pa
torr 0 to 1125 torr 1 torr
mm Hg 0 to 1125 mm Hg 1 mm Hg
micron 0 to 1,125,000 micron 1000 micron
In Hg 0 to 44.30 inch Hg 0.02 inch Hg
PSI 0 to 21.75 psi 0.01 psi
Dimension Meter: 7 × 3 × 1 ½” (180 × 75 × 35 mm)
Probe cord: 49” (125 cm)
Display 61 mm x 34 mm super large LCD display.
15 mm (0.6”) digit size
Weight Meter with battery: 8 oz (220 g)
Probe: 6 oz (170 g)
Sampling
Time
Approx. 0.8 second
Operating
Environment
32 to 122°F (0to50°C), less than 80% rh
Power
Consumption
Approx. DC 6 mA
Circuit Exclusive microcomputer circuit
Optional
Accessories
840090 Water Resistant Instrument Pouch

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PB8
WARRANTY
Sper Scientic warrants this product against defects in materials
and workmanship for a period of one (1) years from the date
of purchase, and agrees to repair or replace any defective unit
without charge. If your model has since been discontinued, an
equivalent Sper Scientic product will be substituted if available.
This warranty does not cover probes, batteries, battery leakage,
or damage resulting from accident, tampering, misuse, or abuse of
the product. Opening the meter to expose its electronics will break
the waterproof seal and void the warranty.
To obtain warranty service, ship the unit postage prepaid to:
SPER SCIENTIFIC LTD.
8281 East Evans Road, Suite #103
Scottsdale, AZ 85260
The defective unit must be accompanied by a description of the
problem and your return address. Register your product online at
www.sperwarranty.com within 10 days of purchase.
Rev 3/8/2018