Sper scientific 840087 Manual de usuario

BASIC PH METER

840087

BASIC PH METER KIT

840088

Instruction Manual

2 3

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

4 5

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

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.

6 7

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.

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)

8 PB

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

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