Myron L 3P User Manual

Ultrameter

™

Operation

Manual

Model 3P

10 - 02 (WEB) EG

MYRON L

COMPANY

MS

MR

pH

MMYYRROONN LL

CCOOMMPPAANNYY

3P

ORP

These 2 Measurement keys will:

• Turn instrument on

• Measure parameter

• Exit any function

Parameters (2)

Wrist/neck strap slot
(user supplied)

pH/ORP Sensor
Protective Cap

This key for:

• Calibration

• Memory Clear

• Confirmation

Up key/Memory Store

Down key/Memory Recall

Displayed here:

• Temperature
readout

• Memory Storage/
Recall

• pH Calibration

Parameter
pH
ORP

Units of Measurement
None
mV - millivolts

* ™DuPont Company
** U.S. Patent #4128468

Teflon* Reference
Junction** under
Glass pH Bulb

ORP
Electrode

pH Glass
Electrode

pH/ORP Sensor
(Replaceable)

BUFFER

mV

°C% /

ORP pH

LOBATT CAL MEMORY

3-23-98

For detailed explanations see Table of Contents

Instrument Illustration

MCLR

CAL

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ULTRAMETER

TM

FEATURES and SPECIFICATIONS

A. Features

• Accuracy of ±.01 pH/±1 mV @ calibration point.

• All electrodes are internal for maximum protection.

• Waterproof to 3 feet/1 meter.

• Prompts for easy pH calibration.

• Memory saves 20 readings.

• Factory calibrations stored in microprocessor.

B. General Specifications
Display 4 Digit LCD
Dimensions (LxWxH) 7.7x2.7x2.5 in.

196x68x64 mm
Weight 13oz./369g
Case Material VALOX*
pH/ORP Sensor Well Capacity 0.04 oz./1.2 ml
Power 9V Alkaline Battery
Battery Life >100 Hours/5000 Readings
Operating/Storage Temperature 32-132°F/0-55°C
Protection Ratings IP67/NEMA 6 (waterproof to

3 feet/1 meter)

* ™ GE Corp.

D. Warranty/Service

All Myron L Ultrameters have a 2 year warranty except for pH sensors
which have a 6-month limited warranty. If an instrument fails to operate
properly, see the Troublshooting Chart, pg. 18. The battery and pH/ORP
sensor are user replaceable. For other service, return the instrument
prepaid to the Myron L Company.

MYRON L COMPANY
2450 Impala Drive
Carlsbad, CA 92010
USA
760-438-2021

If, in the opinion of the factory, failure was due to materials or
workmanship, repair or replacement will be made without charge. A
reasonable service charge will be made for diagnosis or repairs due to
normal wear, abuse or tampering. This warranty is limited to the repair or

replacement of the Ultrameter only. The Myron L Company assumes no

other responsibility or liability.

E. Ultrameter Models

ULTRAMETER MODELS

PARAMETERS pH/ORP/Temp. Conductivity/TDS Conductivity/TDS/pH

3P 4P 6P

Resistivity/Temp. Resistivity/ORP/Temp

C. Specification Chart

pH ORP3P

Ranges 0-14 pH ±999 mV

Resolution

±.01 pH ±1 mV

Accuracy ±.01 pH ±1 mV

Auto

Temperature

0-71°C

32 - 160°F

Compensation

Additional information available on our web site at:

www.myronl.com

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TABLE OF CONTENTS

VII. CHANGING from CENTIGRADE to FAHRENHEIT . . . . . . . . . . . .14

Instrument Illustration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

FEA TURES and SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . 2

A. Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

B. General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 2

C. Specification Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

D. Warranty/Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

E. Ultramter Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

I. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

II. RULES of OPERA TION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

A. Operation in a Nutshell . . . . . . . . . . . . . . . . . . . . . . . . . 6

B. Characteristics of the Keys . . . . . . . . . . . . . . . . . . . . . . 6

C. Operation of the Keys . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1. Measurement Keys in General . . . . . . . . . . . . 6

2. pH and ORP keys . . . . . . . . . . . . . . . . . . . . . . . 6

3. CAL/MCLR key . . . . . . . . . . . . . . . . . . . . . . . . . 7

4. UP or DOWN keys . . . . . . . . . . . . . . . . . . . . . . .7

III. AFTER USING the ULTRAMETER

Maintenance of the pH/ORP Sensor . . . . . . . . . . . . . . . . .7

IV. THE SPECIFIC RECOMMENDED MEASURING

PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

A. Measuring pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

B. Measuring ORP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

V. CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

A. Calibration Intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

B. Rules for Calibration in the Ultrameter . . . . . . . . . . . . . 9

1. Calibration Steps . . . . . . . . . . . . . . . . . . . . . . . .9

2. Calibration Limits . . . . . . . . . . . . . . . . . . . . . . . .9

C. Calibration Procedures . . . . . . . . . . . . . . . . . . . . . . . . 10

1. pH Calibration . . . . . . . . . . . . . . . . . . . . . . . . . 10

2. ORP Calibration . . . . . . . . . . . . . . . . . . . . . . . .12

3. Temperature Calibration . . . . . . . . . . . . . . . . 12

VIII. TOTAL RETURN to FACTORY SETTINGS . . . . . . . . . . . . . . . . . 14

IX. CALIBRA TION INTER VALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

A. Suggested Intervals . . . . . . . . . . . . . . . . . . . . . . . . . . .15

B. Calibration Tracking Records . . . . . . . . . . . . . . . . . . . 15

C. pH and ORP Practices . . . . . . . . . . . . . . . . . . . . . . . . . 15

X. CARE and MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

A. Temperature Extremes . . . . . . . . . . . . . . . . . . . . . . . . 16

B. Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . 16

C. pH/ORP Sensor Replacement . . . . . . . . . . . . . . . . . .16

D. Cleaning Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

XI. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

XII. ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

A. pH Buffer Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

B. pH Sensor Storage Solution . . . . . . . . . . . . . . . . . . . 19

C. Soft Protective Case . . . . . . . . . . . . . . . . . . . . . . . . . . 19

D. Replacement pH/ORP Sensor . . . . . . . . . . . . . . . . . .19

E. Data Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

F. Conductivity/TDS Standard Solutions . . . . . . . . . . . 19

XIII. pH and ORP MEASURING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

A. pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

B. ORP/Oxidation-Reduction Potential/REDOX . . . . . .21

XIV. GLOSSARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

VI. MEMORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

A. Memory Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

B. Memory Recall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

C. Clearing a Record/Memory Clear . . . . . . . . . . . . . . . . 13

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