Sper scientific 840065 User manual

Wide Range Pressure Meter
840065
Instruction Manual

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Wide Range Pressure Meter - 840065
Copyright ©2015 by Sper Scientic
ALL RIGHTS RESERVED
Printed in the USA
The contents of this manual may not be reproduced or transmitted
in any form or by any means electronic, mechanical, or other
means that do not yet exist or may be developed, including
photocopying, recording, or any information storage and retrieval
system without the express permission from Sper Scientic.
INTRODUCTION .....................................3
PANEL DESCRIPTION ................................3
OPERATING INSTRUCTIONS...........................4
SENSOR TYPES ...................................4
CHANGING THE SENSOR ...........................4
MEASURING PROCEDURES.........................4
DATA HOLD & DATA RECORD ........................5
MEASURING CONSIDERATIONS .....................5
AUTO POWER DISABLE.............................5
CALIBRATION .......................................6
BATTERY REPLACEMENT .............................6
SPECIFICATIONS ....................................7
WARRANTY.........................................8
TABLE OF CONTENTS

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INTRODUCTION
This unit covers a wide pressure range, 0 to 725 PSI, not usually
found in a single meter and is compatible with both liquids and
gases. Useful in measuring pneumatic pressure, automobile
engine vacuum pressure, super heat measurements, hydraulic
servo controls, refrigeration, air conditioning, and food processing.
Features eight units of measure (Bar, Psi, Kg/cm mm/1meter/H20,
inch/H20, Atmosphere), min-max, hold, and auto power o󰀨.
PANEL DESCRIPTION
1. Pressure Sensor
Socket & Plug
2. Display
3. Power Button
4. Hold Button
5. Sensor Type Selector
6. Max/Min Button
7. Unit Button
8. Zero Button
9. Pressure Sensor
Main Housing
10. Pressure Sensor
Port Connector
11. Battery Cover (on back)
1
2
3
4
5
11
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7
8
9
10

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OPERATING INSTRUCTIONS
Sensor Types
The meter works with optional pressure sensors.
When changing the sensor, re-calibration is not required.
The optional pressure sensor are:
• 2 Bar pressure sensor
• 5 Bar pressure sensor
• 10 Bar pressure sensor
• 20 Bar pressure sensor
• 50 Bar pressure sensor
• 100 Bar pressure sensor
• 200 Bar pressure sensor
Changing the Sensor
1. Turn the meter o󰀨.
2. Push and hold the following 3 buttons at the same time:
HOLD Button, MAX/MIN Button, SENSOR TYPE Button
3. Continue to hold the 3 buttons, while pushing the POWER
Button. Release the buttons and the display will indicate the
previous sensor type.
4. Push the SENSOR TYPE Button to select the sensor (2, 5, 10,
20, 50, 100, or 200 Bar). When the display indicates the desired
sensor, push the Zero button. The new sensor type will be
stored in memory, even after the unit has been turned o󰀨.
5. Turn o󰀨 the meter. This completes the sensor selection.
Measuring Procedures
1. Connect the Pressure Sensor Plug to the meter’s Sensor
Input Socket.
2. Press the POWER Button.
3. Press the SENSOR TYPE Button to check that the meter’s
sensor type is correct.
4. Press the UNIT Button to select the desired unit of measure:
Bar, Psi, Kg/cm2, mm/Hg, inch/Hg, meter/H20, inch/H20, or
Atmosphere.
5. Press the ZERO Button and the display reading will show zero.
6. Attach the Pressure Sensor Port Connector to the object to
be measured.
7. Apply pressure and the meter will indicate the pressure value.

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Data Hold
1. Press the HOLD Button during measurement to freeze the
displayed value. “HOLD” is shown on the LCD.
2. Press the HOLD Button a second time to resume measurement.
Data Record (Maximum/Minimum reading)
The Data Record function displays the maximum and minimum
readings. To start the Data Record function, press the MAX/MIN
Button once. The LCD display will indicate “REC.” Press the MAX/
MIN Button again and the “Max” symbol (along with the maximum
value) will appear on the LCD display. Press the MAX/MIN Button
a third time and the “Min” symbol (along with the minimum value)
will appear on the display. To exit the memory record function,
press and hold the MAX/MIN Button for approximately 2 seconds.
The display will revert back to the current reading.
Measuring Procedures Overview
1. Connect the Sensor Plug to the meter’s Input Socket
2. Turn on the meter
3. Select the display unit.
4. Zero the meter by pressing the ZERO Button.
5. Connect the pressure sensor to the object being measured.
6. Apply pressure and meter will display the pressure value.
Measuring Considerations
• The sensor diaphragm can be damaged by solid or sharp
objects. Never insert objects into the inlet port.
• The pressure sensor operates with industrial gases and liquids
that are compatible with 316 stainless steel or ceramic materials.
To determine the compatibility of a liquid or gas, refer to
manufacture’s specication.
Auto Power Disable
This unit has a built-in Auto Power O󰀨 function to prolong battery life.
The meter will shut o󰀨 automatically if no buttons are pressed within
10 minutes. To deactivate this feature, select the memory record
function during measurement, by pressing the MAX/MIN Button.

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CALIBRATION
Generally, it is not necessary to perform calibrations on the
pressure meter or the external pressure sensor. Each unit is
preadjusted and calibrated.
Zero Calibration
After a long period of operation or due to the environment, the zero
and gain (span) may drift. To ensure an accurate reading, perform
a Zero Calibration as follows:
1. Connect the pressure sensor and shut on the meter.
2. Press and hold both the MAX/MIN Button and the HOLD Button.
The zero value will be displayed in both large and small digits.
3. Continue pressing the MAX/MIN and HOLD Buttons and press
the ZERO Button. The display will ash once and return to zero.
4. Release all three buttons and the new zero value will be stored.
Gain Calibration (Span Adjust)
1. Turn on the meter and allow it to warm up for two minutes.
2. Push the ZERO Button.
3. Connect the pressure regulator to a nitrogen bottle and the
reference gauge to the pressure regulator.
4. Press and hold both the MAX/MIN Button and the HOLD Button.
Results will be displayed in both the large and the small digits.
5. Continue pressing the MAX/MIN and HOLD Buttons and press
the SENSOR TYPE Button once, to add one count to the small
digit value.
6. Press the UNIT Button once to decrease the small digit value by
one count.
7. When the desired value is reached (for example 9.00), release
the HOLD and MAX/MIN Buttons. The display will ash. Push
the SENSOR TYPE Button within 5 seconds. The new gain
value will be stored in the unit.
BATTERY REPLACEMENT
When the top left corner of LCD display indicates “LBT,” it is time
to replace the battery. Accurate readings may be taken for several
hours after the low battery indicator appears. Open the battery
cover, install a fresh 9V battery and replace the cover.

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Transducer 840066 840067 840068 840069 840070
Max
Range Res. Max Range Res. Max Range Res. Max Range Res. Max Range Res.
Bar 2 0.002 50.005 10 0.01 20 0.02 50 0.05
PSI 29 0.02 72.5 0.1 145 0.2 290 0.2 725 1
Kg cm22.040 0.002 5.095 0.005 10.19 0.01 20.40 0.02 50.95 0.05
mm Hg 1500 2 3750 5 7500 10 15000 20 37500 50
In Hg 59.05 0.05 147.6 0.1 295.2 0.2 590.5 0.5 1476 1
Meter H2O20.40 0.02 50.95 0.05 101.9 0.1 204.0 0.2 509.5 0.5
In H2O 802 1 2006 2 4010 5 8020 10 20050 20
Atmospheres 1.974 0.002 4.935 0.005 9.87 0.01 19.74 0.02 49.35 0.05
SPECIFICATIONS - TRANSDUCERS
SPECIFICATIONS - METER
Circuit Microprocessor LSI circuit.
Sensor type
Works with optional 2, 5, 10, 20, 50, 100, 200 bar
sensor, new calibration is not necessary when the
sensor is changed.
Measuring units Bar, Psi, Kg/cm2, mm/Hg, inch/Hg, meter/H2O,
inch/H2O Atmosphere.
Accuracy ± 0.5% + 1d, within 23°C ± 5°C
Zero adjust Push button on the front panel.
Span adjust Push button gain adjustment for precise calibration.
Input signal
from sensor DC 100 mV for full scale.
Data output RS 232 PC serial interface.
Sampling time Approx. 0.8 second.
Operating Temp. 0 to 50°C (32 to 122°F), Less than 80% R.H.
Power supply Alkaline or heavy duty type DC 9V battery, 006P,
MN1604 (PP3) or equivalent.
Power current Approx. DC 7.0 mA.
Dimensions 7" × 3" × 1½" (178 × 76 × 38 mm)
Weight 13 oz (369 g)

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WARRANTY
Sper Scientic warrants this product against defects in materials
and workmanship for a period of one (1) year 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