Sper scientific 840087 User manual

BASIC PH METER
840087
BASIC PH METER KIT
840088
Instruction Manual

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I. INTRODUCTION ...................................... 3
II. PANEL DESCRIPTION ................................. 4
III. OPERATING INSTRUCTIONS
A. PH CALIBRATION PROCEDURE ....................... 5
B. MEASUREMENT PROCEDURES ....................... 5
C. BATTERY REPLACEMENT ............................ 6
D. TROUBLE SHOOTING ............................... 6
IV. SPECIFICATIONS...................................... 7
V. OPTIONAL ACCESSORIES.............................. 7
VI. WARRANTY ......................................... 8
I. INTRODUCTION
The Basic pH Meter is a high quality, easy to operate general purpose
pH meter. Your meter can be used with any electrode with a BNC type
connector. It’s light weight, compact yet heavy duty construction makes
it ideal for eld applications. Comes with a 9V battery, calibration tool,
and instructions.
TABLE OF CONTENTS

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II. PANEL DESCRIPTION
1. LCD Display 4. HOLD Button 7. Cal. PH7
2. ON Button 5. pH BNC Input Socket 8. Battery Compartment
3. OFF Button 6. Slope PH4/PH10 Adj. 9. Stand
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2
4
3
5
9
7
6
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III. OPERATING INSTRUCTIONS
A. PH CALIBRATION PROCEDURES
The meter is factory calibrated to simulate the ideal pH electrode
(0 mV at pH 7.00 and 177.4 mV at pH4, based on an ambient
temperature of 77°F/25°C ). Follow the two-point calibration procedures
to ensure the highest degree of accuracy.
Two Point Calibration
1. Connect the pH electrode to the BNC SOCKET.
2. Press the ON button and place the pH electrode into the pH7 solution.
3. Using a small screw driver, turn the CAL. PH7 adjustment until the
display indicates 7.00.
4. Rinse the electrode in distilled water and shake dry.
5. Next, place the electrode into the pH4 solution.
6. Turn the SLOPE PH4 PH10 adjustment until the display
indicates 4.00.
7. Rinse the electrode again.
Single Point Calibration
1. Connect the pH electrode to the BNC SOCKET.
2. Press the ON button and place the pH electrode into the pH7 solution.
3. Using a small screw driver, turn the CAL. PH7 adjustment until the
display indicates 7.00.
4. Rinse the electrode in distilled water.
B. PH MEASUREMENT PROCEDURES
1. Connect the pH electrode and press the ON button.
2. Calibrate the meter (see above instructions).
3. Place the pH electrode into the solution to be measured.
4. The pH level of the solution is displayed.
5. To freeze the displayed value, press the HOLD button.
To cancel this function, press the HOLD button again.
6. Rinse the electrode in distilled water after each use.
7. Press the OFF button.

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C. BATTERY REPLACEMENT
1. Replace the battery when the low battery icon is displayed in
the left corner of LCD. In-spec measurements may be made
for several hours after the low battery indicator appears.
2. Slide the battery cover away from the instrument, remove the battery
and replace with a 9V battery (alkaline or heavy duty type).
3. Close the battery cover.
D. TROUBLE SHOOTING
If you pH meter malfunctions, follow these steps to pinpoint the problem.
1. Replace the battery when the low battery icon is displayed.
2. Check that the electrode is correctly connected to the BNC socket.
3. Determine if the problem is the pH meter or the electrode by:
A. Substituting a known working electrode for the one in use.
- Or -
B. Remove the electrode and turn the unit on. Next, insert a wire or
paper clip into the center hole of the BNC electrode socket while
touching the other end of the wire to the outer metal ring. If the
meter is functioning, the pH reading should be stable and between
6.00 and 8.00.
4. If your meter displays a reading during step 3, replace the electrode. If
the meter does not display a reading after following all trouble shooting
steps, return it to Sper Scientic under the terms of the warranty.

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IV. SPECIFICATIONS
Display LCD, 1/2” (21.5 mm ) digit height
Input Impedance 1012 ohm
Measurement Range 0 to 14 pH X 0.01 pH
Resolution 0.01 pH
Accuracy ± 0.07pH (pH5 to pH9)
± 0.2pH (<pH5, >pH9)
Meter only, after calibration and including
error for temperature at 64 to 82°F (18 to 28°C)
Ph Calibration External pH4 (slope adjustment) and
pH7 Cal. adjustment
PH Electrode Any pH electrode with a BNC connector
Operating Temperature 32 to 122°F (0 to 50°C )
Operating Humidity Max. 80% RH
Sampling Time Approximately 0.4 seconds
Power Supply 006P DC 9V battery
Power Consumption Approximately 2.0 mA
Weight (meter) 7 1/2 oz (220g)
Size (meter) 7 3/4 x 2 ½" x 1" (205 x 68 x 30 mm)
V. OPTIONAL ACCESSORIES (item number and description)
840090 - Water Resistant Instrument Pouch
840093 - Field Tripod
840016 - pH Probe
860008 - pH 4 Bu󰀨er Solution (3 bottles, 40 mL each)
860009 - pH 7 Bu󰀨er Solution (3 bottles, 40 mL each)
860010 - pH 10 Bu󰀨er Solution (3 bottles, 40 mL each)

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WARRANTY
Sper Scientic warrants this product against defects in materials
and workmanship for a period of ve (5) 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 7/5/2017