Myron L TechPro II Manual de usuario

18 February 16

TECHPRO

Operation

Manual

MODELS TPH1, TP1

™

TechPro

TPH1

BUFFER

°C °F

TDS

COND

09 mar 15

Wrist/neck Strap slot

(Strap user supplied)

pH Sensor

Protective Cap

Up key/Memory Store

Down key/Memory Recall

Displayed here:

• Temperature

readout

• Memory Storage

Location

• pH Calibration

This Key for:

• Calibration

• Memory Clear

• Solution Selection

• Confirmation

These Measurement Keys will:

• Turn instrument on

• Measure parameter

• Exit any function

Icons for pH, Conductivity or

Total Dissolved Solids (TDS)

pH Glass

Electrode

pH Sensor

(User replaceable)

Reference

Junction

(Under Glass

Bulb)

Conductivity Cell

(Built-in

Electrodes)

Temperature

Sensor

Preprogrammed

conductivity/

TDS ratios

For detailed explanations, see Table of Contents

Instrument Illustration

MODEL TPH1 Shown

TDS/SalinityPPT - parts per thousand

µS - microsiemens/cm

(micromhos/cm)

mS - millisiemens/cm

(millimhos/cm)

PPM - parts per million TDS

Conductivity

Conductivity/

Salinity

TechPro

TPH1

BUFFER

°C °F

TDS

COND

09 mar 15

Wrist/neck Strap slot

(Strap user supplied)

pH Sensor

Protective Cap

Up key/Memory Store

Down key/Memory Recall

Displayed here:

• Temperature

readout

• Memory Storage

Location

• pH Calibration

This Key for:

• Calibration

• Memory Clear

• Solution Selection

• Confirmation

These Measurement Keys will:

• Turn instrument on

• Measure parameter

• Exit any function

Icons for pH, Conductivity or

Total Dissolved Solids (TDS)

pH Glass

Electrode

pH Sensor

(User replaceable)

Reference

Junction

(Under Glass

Bulb)

Conductivity Cell

(Built-in

Electrodes)

Temperature

Sensor

Preprogrammed

conductivity/

TDS ratios

For detailed explanations, see Table of Contents

Instrument Illustration

MODEL TPH1 Shown

TDS/SalinityPPT - parts per thousand

µS - microsiemens/cm

(micromhos/cm)

mS - millisiemens/cm

(millimhos/cm)

PPM - parts per million TDS

Conductivity

Conductivity/

Salinity

I. INTRODUCTION

Thank you for selecting the feature-packed TechPro II™, one of the

Myron L® Company’s latest in an increasing line of instruments utilizing

advanced microprocessor-based circuitry and SMT manufacturing

processes. This circuitry makes the instrument extremely accurate,

reliable and very easy to use.

The TechPro II incorporates several new features including: waterproof

enclosure, keypad calibration, FULL 4 digit LCD, the addition of a 20

location memory storage, and enhanced performance to name just some

of the improvements. Additionally, “salinity” units may be selected. See

Features and Specications on pages 2 & 3.

For your convenience, on the bottom side of your TechPro II is a brief

set of instructions.

Special note ... For the TPH1 & TP1 models, conductivity and TDS

require mathematical correction to 25°C values (ref. Temperature

Compensation, pg. 25). On the left of the TechPro II’s liquid crystal

display is shown an indicator of the salt solution characteristic used to

model temperature compensation (Tempco) of conductivity and its TDS

conversion. The indicator may be KCl, NaCl, or 442™. Selection affects

the temperature correction of conductivity, and the calculation of TDS

from compensated conductivity (ref. Conductivity Conversion to Total

Dissolved Solids (TDS), pg. 28).

The selection can affect the reported conductivity of hot or cold solutions,

and will change the reported TDS of a solution. Generally, using KCl

for conductivity, and 442™ (Natural Water characteristic) for TDS will

reect present industry practice for standardization. This is how your

instrument, as shipped from the factory, is set to operate. For use in sea

water desalination for example, both the CONDuctivity and TDS may

easily be changed to NaCl.

II. FEATURES and SPECIFICATIONS

A. Features

• Ranges:

Conductivity/TDS — 0-20,000 µS/ppm (TPH1 & TP1)

pH — 0 -14 (TPH1)

• Superior resolution four (4) digit LCD

• Conductivity/TDS accuracy of ±1% of reading

• pH accuracy of ±.01 pH units (TPH1)

• All electrodes are internal for maximum protection

• Waterproof to 1 meter/3 feet

• Memory storage (20 readings)

• Autoranging Conductivity/TDS (TPH1 & TP1)

• Easy keypad calibration

• Prompts for simple pH calibration (TPH1)

• Factory calibrations stored in microprocessor

• User selectable Conductivity/TDS modes (TPH1 & TP1)

• 3 “User Selectable” solution conversions (tempcos) (TPH1 & TP1)

• User Selectable “Salinity” units (TPH1 & TP1)

• Temperature accuracy of ±0.1°C/F

• Automatic Temperature Compensation to 25°C

• Temperature Compensation disable feature

B. General Specications

Display 4 Digit LCD

Dimensions (LxWxH) 196 x 68 x 64 mm

7.7 x 2.7 x 2.5 in.

Weight 320 g/11.2 oz.

Case Material VALOX

Cond/TDS Cell Material VALOX

Cond/TDS Electrodes 316 Stainless Steel

Cond/TDS Cell Capacity 5 ml/0.2 oz.

pH Sensor Well Capacity 1,2 ml/0.04 oz. (TPH1)

Power 9V Alkaline Battery

Battery Life >100 Hours/5000 Readings

Operating/Storage Temperature 0-55°C/32-132°F

Protection Ratings IP67/NEMA 6

(waterproof to 1 meter/3 feet)

Additional information is available on our website at:

www.myronl.com

C. Specication Chart

(TPH1)

Conductivity TDS Temperature

Ranges 0-14 pH 0-9999 µS/cm

10-20 mS/cm in

3 autoranges

0-9999 ppm

10-20 ppt in

3 autoranges

0-71°C

32-160°F

Resolution 0.01 pH 0.1 (<1000 µS)

1.0 (<10 mS)

0.01 (>10 mS)

0.1 (<1000 ppm)

1.0 (<10 ppt)

0.01 (>10 ppt)

0.1°C/F

Accuracy ±0.01 pH ±1% of reading ±0.1°C/F

Auto Temperature

Compensation

0-71°C

32-160°F

0-71°C

32-160°F

Conductivity or

TDS Ratios

KCl, NaCl, or 442™

D. Warranty/Service

The Myron L TechPro II™, excluding the pH sensor (TPH1), has a

Two (2) Year Limited Warranty. The pH sensor (TPH1) has a Six (6)

Month Limited Warranty. If an instrument fails to operate properly, see

Troubleshooting Chart, pg. 22. The battery and pH sensor (TPH1) are

user-replaceable. For other service, return the instrument prepaid to the

Myron L®Company.

MYRON L®COMPANY

2450 Impala Drive

Carlsbad, CA 92010-7226 USA

+1-760-438-2021

E-Mail: [email protected]

[email protected]

www.myronl.com

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

TechPro II only. The Myron L®Company assumes no other responsibility

or liability.

E. TechPro II™ Series Models

MADE IN USA

TechPro II Models TP1 TPH1

Parameters Conductivity, Conductivity,

TDS & TDS, pH &

Temperature Temperature

*EM Susceptibility: When Measuring 10.0 pH Reference Solution

±0.2 pH in the presence of RF elds ≥ 3 V/m.

±0.37 pH in the presence of RF elds at 300 MHz (±30MHz)

**If either ORP or pH is outside the specied limits, the instrument will display “-Or-”.

TABLE OF CONTENTS

Instrument Illustration ...................................... i

I. INTRODUCTION ................................... 1

II. FEATURES and SPECIFICATIONS .................... 2

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

B. General Specications ..................... 2

C. Specication Chart ........................ 3

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

E. TechPro II Series Models ................... 3

III. RULES of OPERATION.............................. 6

A. Operation ............................... 6

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

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

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

2. COND and TDS Keys (TPH1 & TP1) .... 6

3. pH Key (TPH1) .................... 7

4. CAL/MCLR Key .................... 7

5. UP or DOWN Keys .................. 7

IV. AFTER USING the TechPro II ......................... 8

A. Maintenance of the Conductivity Cell

(TPH1 & TP1) ........................ 8

B. Maintenance of the pH Sensor (TPH1) ......... 8

V. SPECIFIC RECOMMENDED MEASURING PROCEDURES . . 8

A. Measuring Conductivity/Total Dissolved Solids .. 8

B. Measuring pH (TPH1) ...................... 8

VI. SOLUTION SELECTION (TPH1 & TP1) ................. 9

A. Why Solution Selection is Available ........... 9

B. The 3 Solution Types....................... 9

C. Calibration of Each Solution Type............. 9

D. Procedure to Select a Solution ............... 9

VII. CALIBRATION ................................... 10

A. Calibration Intervals ...................... 10

B. Rules for Calibration of the TechPro II ........ 10

1. Calibration Steps .................. 10

2. Calibration Limits .................. 11

C. Calibration Procedures

1. Conductivity or TDS Calibration

(TPH1 & TP1) ................. 11

2. Reloading Factory Calibration ........ 12

3. pH Calibration (TPH1) .............. 12

VIII. CALIBRATION INTERVALS ......................... 14

A. Suggested Intervals ...................... 14

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

C. Conductivity or TDS Practices (TPH1 & TP1)... 15

D. pH Practices (TPH1) ...................... 15

IX. MEMORY........................................ 15

A. Memory Storage ......................... 16

B. Memory Recall .......................... 16

C. Clearing a Record/Memory Clear ............ 16

X. TEMPERATURE FORMAT “Centigrade & Fahrenheit” ..... 17

XI. TEMPERATURE COMPENSATION (TC) DISABLE

(TPH1 & TP1) .............................. 17

XII. SALINITY UNITS (TPH1 & TP1) ...................... 18

XIII. TOTAL RETURN to FACTORY SETTINGS.............. 19

XIV. CARE and MAINTENANCE ......................... 19

A. Temperature Extremes .................... 20

B. Battery Replacement (LO BATT) ............ 20

C. pH Sensor Replacement (TPH1) ............ 20

D. Cleaning Sensors ........................ 20

XV. TROUBLESHOOTING CHART ....................... 22

XVI. ACCESSORIES................................... 24

A. Conductivity/TDS Standard Solutions

(TPH1 & TP1) ....................... 24

B. pH Buffer Solutions (TPH1)................. 24

C. pH Sensor Storage Solution (TPH1).......... 24

D. Soft Protective Case ...................... 25

E. Hard Protective Carry Cases ............... 25

F. Replacement pH Sensor (TPH1) ............. 25

XVII. TEMPERATURE COMPENSATION (TPH1 & TP1) ....... 25

A. Standardized to 25°C ..................... 25

B. Tempco Variation......................... 25

C. An Example............................. 26

D. A Chart of Comparative Error ............... 26

E. Other Solutions .......................... 27

XVIII. CONDUCTIVITY CONVERSION to

TOTAL DISSOLVED SOLIDS (TDS) (TPH1 & TP1)... 28

A. How it’s Done ........................... 28

B. Solution Characteristics ................... 28

C. When does it make a lot of difference?........ 28

XIX. TEMPERATURE COMPENSATION (Tempco)

and TDS DERIVATION (TPH1 & TP1) ........... 29

XX. pH MEASUREMENT (TPH1) ........................ 29

A. pH as an Indicator (TPH1) ................. 29

B. pH Units (TPH1) ......................... 30

C. pH Sensor (TPH1) ....................... 30

D. Myron L Integral pH Sensor (TPH1) .......... 31

E. Sources of Error (TPH1) ................... 31

XXI. SOFTWARE VERSION ............................. 32

XXII. GLOSSARY...................................... 33

XXIII. ADDENDUM ..................................... 34

XXIV. NOTES ......................................... 36

III. RULES of OPERATION

A. Operation

Using the instrument is simple:

• Individual or multiple parameter readings may be obtained by

lling individual sensors or entire cell cup area.

• Rinse the conductivity cell or pH sensor well (TPH1) with

test solution 3 times and rell. Temperature and/or

measurement extremes will require additional rinses for

maximum accuracy.

• Press the desired measurement key to start measurement.

Pressing the key again restarts the 20 second auto “off” timer.

• Note the value displayed or press the MS key to store the

reading (ref. Memory Storage, pg. 16). It’s that simple!

B. Characteristics of the Keys

• Though your TechPro II has a variety of sophisticated options,

it is designed to provide quick, easy, accurate measurements

by simply pressing one key.

• All functions are performed one key at a time.

• There is no “off” key. After 20 seconds of inactivity the

instrument turns itself off (60 seconds in CAL mode).

• Rarely is it necessary to press and

hold

a key (as in Procedure

to Select a Solution, pg.9; or Cond. or TDS Calibration, pg. 11).

C. Operation of the Keys (See Instrument Illustration on pg. i)

1. Measurement Keys in General

The measurement keys turn on the instrument in the mode selected.

The parameter is shown at the bottom of the display, and the measurement

units appear at the right. Pressing a measurement key does this even

if you are in a calibration sequence and also serves to cancel a change

(ref. Leaving Calibration, pg. 11).

2. COND and TDS Keys (TPH1 & TP1)

These keys are used with solution in the Conductivity Cell.

Precautions:

• While lling cell cup ensure no air bubbles cling on the cell wall.

• If the proper solution is not selected (KCl, NaCl or 442), (ref.

Why Solution Selection is Available, pg. 9).

a. COND Key

Solution to be tested is introduced into the conductivity cell and a press

of displays conductivity with units on the right. On the left is

shown the solution type selected for conductivity.

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