Myron L 4P User Manual
Ultrameter
™
Operation
Manual
Model 4P
10 - 02 (WEB) EG
MYRON L
COMPANY
7-11-00
Instrument Illustration
MS
MR
MMYYRROONN LL
CCOOMMPPAANNYY
4P
COND
RES TDS
These 3 Measurement keys will:
• Turn instrument on
• Measure parameter
• Exit any function
(Built-in
Electrodes)
Preprogrammed
variable conductivity/
TDS ratios
Parameters (3)
Wrist/neck strap slot
(user supplied)
This key for:
• Calibration
• Memory Clear
• Solution selection
• Confirmation
Up key/Memory Store
Down key/Memory Recall
Conductivity Cell
USER mode
for programming
special temperature
compensation
factor and
conductivity/TDS
ratio
Displayed here:
• Temperature
readout
• USER temperature
compensation or
conductivity/TDS
ratio
• Memory Storage/
Recall
BUFFER
PPM
PPT
µS
mS
K
M
°C
RATIO
% /
KCl
442
NaCl
User
LOBATT CAL MEMORY
RES TDSCOND
For detailed explanations see Table of Contents
Units of Measurement
Ω
Megohms - cm
Ω
Kilohms - cm
mS - millisiemens/cm
(millimhos/cm)
µS - microsiemens/cm
(micromhos/cm)
PPM - parts per million
PPT - parts per thousand
Parameter
Resistivity
Resistivity
Conductivity
Conductivity
TDS
TDS
Temperature
Sensor
MCLR
CAL
1
ULTRAMETER
TM
FEATURES and SPECIFICATIONS
C. Specification Chart
A. Features
• Superior resolution 4 digit LCD displays full 9999 µS/ppm.
• Accuracy of ±1% of reading (not merely full scale).
• All electrodes are internal for maximum protection.
• Latest 4 electrode cell technology.
• Waterproof to 3 feet/1 meter.
• Autoranging conductivity/TDS/resistivity.
• Memory saves 20 readings.
• Factory calibrations stored in microprocessor.
• 3 conductivity/TDS solution conversions preprogrammed into
microprocessor.
• USER feature allows:
Programming your own cond/TDS conversion factor.
Programming your own temperature compensation factor.
Disabling temperature compensation.
B. General Specifications
Display 4 Digit LCD
Dimensions (LxWxH) 7.7x2.7x2.5 in.
196x68x64 mm
Weight 12oz./341g
Case Material VALOX*
Cond/Res/TDS Cell Material VALOX*
Cond/Res/TDS Cell Capacity 0.2 oz./5 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.
Additional information available on our web site at:
www.myronl.com
4P
Ranges
Auto
Temperature
Compensation
Temperature
Compensation
Cond/TDS
Ratios
Preprogrammed
Adjustable
Cond/TDS Ratio
Factor
* up to 100mS/ppt; 100 - 200mS/ppt: ± 1 - 2% typ.
Conductivity TDS Resistivity
0-9999 µS
10-200 mS
in 5 autoranges
0.01 (<100 µS)
0.1 (<1000 µS)
1.0 (>1000 µS)
±1 % of reading* ±1 % of reading*
0-71°C
32 - 160°F
0 - 9.99%/°CAdjustable
KCl, NaCl, 442™
0.20 - 7.99
0-9999 ppm
in 5 autoranges
0.01 (<100 ppm)
0.1 (<1000 ppm)
1.0 (>1000 ppm)
32 - 160°F
0 - 9.99%/°C 0 - 9.99%/°C
10-200 ppt
0-71°C
10K - 30M ohms
0.01 (<100K ohmsΩ
0.1 (<1000K ohmsΩ
1.0 (>1 MΩ)
±1 % of reading**
**10K ohms - 10M ohms
Ω
0-71°C
32 - 160°F
Ω Ω
Temperature
0-71°C
32 - 160 °F
Ω
0.1 °C/FResolution
)
)
±0.1 °CAccuracy
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. 21. 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
other responsibility or liability.
E. Ultrameter Models
ULTRAMETER MODELS 3P 4P 6P
PARAMETERS pH/ORP/Temp. Conductivity/TDS Conductivity/TDS/pH
2
Resistivity/Temp. Resistivity/ORP/Temp.
3
TABLE OF CONTENTS
Instrument Illustration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
FEA TURES and SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
A. Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
B. General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 2
C. Specification Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
D. Warranty/Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
E. Ultrameter Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
I. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
II. RULES of OPERA TION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
A. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
B. Characteristics of the Keys . . . . . . . . . . . . . . . . . . . . . . 7
C. Operation of the Keys . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1. Measurement Keys in General . . . . . . . . . . . . 8
2. COND, RES and TDS keys . . . . . . . . . . . . . . .8
3. CAL/MCLR key . . . . . . . . . . . . . . . . . . . . . . . . . 8
4. UP or DOWN keys . . . . . . . . . . . . . . . . . . . . . . .9
III. AFTER USING the UL TRAMETER
Maintenance of the Conductivity Cell . . . . . . . . . . . . . . . 9
IV. SPECIFIC RECOMMENDED MEASURING PROCEDURES . . . .9
A. Measuring Conductivity/Total Dissolved Solids . . . . .9
B. Measuring Resistivity . . . . . . . . . . . . . . . . . . . . . . . . . . 10
V. SOLUTION SELECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
A. Why Solution Selection is A vailable. . . . . . . . . . . . . . 10
B. The 4 Solution Types. . . . . . . . . . . . . . . . . . . . . . . . . . 10
C. Calibration of Each Solution T ype . . . . . . . . . . . . . . .10
D. Procedure to Select a Solution . . . . . . . . . . . . . . . . . 10
E. Application of USER Solution Type . . . . . . . . . . . . . .11
1. User Programmable Tempco . . . . . . . . . . . . 11
2. Disabling Temperature Compensation . . . . 12
3. User Programmable Conductivity to TDS
Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
VI. CALIBRA TION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
A. Calibration Intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
B. Rules for Calibration in the Ultrameter . . . . . . . . . . . . 13
1. Calibration Steps . . . . . . . . . . . . . . . . . . . . . . .13
2. Calibration Limits . . . . . . . . . . . . . . . . . . . . . . .14
C. Calibration Procedures . . . . . . . . . . . . . . . . . . . . . . . . 14
1. Conductivity or TDS Calibration . . . . . . . . . .14
2. User Calibration Conductivity/TDS . . . . . . . .15
3. Resistivity Calibration . . . . . . . . . . . . . . . . . . . 15
4. Reloading Factory Calibration . . . . . . . . . . . .15
5. Temperature Calibration . . . . . . . . . . . . . . . . 16
VII. MEMORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
A. Memory Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
B. Memory Recall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
C. Clearing a Record/Memory Clear . . . . . . . . . . . . . . . . 16
VIII. CHANGING from CENTIGRADE to FAHRENHEIT . . . . . . . . . . . .17
IX. T OTAL RETURN to FACTOR Y SETTINGS . . . . . . . . . . . . . . . . . 18
X. CALIBRA TION INTER VALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
A. Suggested Intervals . . . . . . . . . . . . . . . . . . . . . . . . . . .19
B. Calibration Tracking Records . . . . . . . . . . . . . . . . . . . 19
C. Conductivity , RES, TDS Practices . . . . . . . . . . . . . . .19
XI. CARE and MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
A. Temperature Extremes . . . . . . . . . . . . . . . . . . . . . . . . 20
B. Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . 20
C. Cleaning Cell Cup . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
XII. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
XIII. ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
A. Conductivity/TDS Standard Solutions . . . . . . . . . . . 22
B. Soft Protective Case . . . . . . . . . . . . . . . . . . . . . . . . . . 22
C. Data Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
D. pH Buffer Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
E. pH Sensor Storage Solution . . . . . . . . . . . . . . . . . . . 23
XIV. TEMPERATURE COMPENSATION (Tempco)
of Aqueous Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
A. Standardized to 25°C . . . . . . . . . . . . . . . . . . . . . . . . . .23
B. Tempco Variation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
C. An Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
D. A Chart of Comparative Error . . . . . . . . . . . . . . . . . . . .25
E. Other Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
4
5
XV. CONDUCTIVITY CONVERSION to
TOTAL DISSOLVED SOLIDS (TDS) . . . . . . . . . . . . . . .26
A. How it’s Done . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
B. Solution Characteristics . . . . . . . . . . . . . . . . . . . . . . . .26
C. When does it make a lot of difference? . . . . . . . . . . . 27
XVI. TEMPERATURE COMPENSATION (Tempco)
and TDS DERIVA TION . . . . . . . . . . . . . . . . . . . . . . . . . . .27
A. Conductivity Characteristics . . . . . . . . . . . . . . . . . . . . 27
B. Finding the Tempco of an Unknown . . . . . . . . . . . . . 28
C. Finding the TDS Ratio of an Unknown . . . . . . . . . . . 28
XVII. GLOSSARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Addendum
I. HIGH RESISTIVITY MEASUREMENTS . . . . . . . . . . . . . . . . . . . . . .1
Offset Zero Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Cell Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
II. USER MODE GAIN CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . 3
A. Calibration of Ultrameter for Use in User Mode . . . . . 3
B. Setting User mode Calibration “Link” . . . . . . . . . . . . . 3
C. Canceling User Mode Calibration “Link” . . . . . . . . . . . 4
* CHECKING YOUR INSTRUMENTS SOFTWARE VERSION . . . . . . . . . 5
I. INTRODUCTION
Thank you for selecting the Ultrameter™ Model 4P, one of the Myron L
Company’s latest in a new line of instruments utilizing advanced
microprocessor-based circuitry. This circuitry makes it extremely accurate
and very easy to use (see pages 2 & 3 for Features and Specifications on
this and other models). For your convenience, your Ultrameter has a brief
set of instructions on its bottom, and a pocket sized card with abbreviated
instructions is included with the instrument.
Special note ...... Conductivity, Resistivity, and TDS require mathematical
correction to 25°C values (ref. Temperature Compensation, pg. 23). On
the left of the Ultrameter’s liquid crystal display is shown an indicator of
the salt solution characteristic used to model temperature compensation
of conductivity and its TDS conversion. The indicator can be KCl, NaCl,
442 or USER. Selection affects the temperature correction of
conductivity, and the calculation of TDS from compensated conductivity
(ref. Conductivity Conversion to Total Dissolved Solids (TDS), pg. 26).
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, NaCl for resistivity, and 442™ (Natural Water
characteristic)
standardization. This is how your instrument, as shipped from the factory,
is set to operate.
II. RULES of OPERATION
A. Operation
Using the instrument is simple:
• Rinse the conductivity cell with test solution 3 times and refill.
• Press the desired measurement key to start measurement.
Pressing the key again does no harm and restarts the 15 second
“off” timer.
• Note the value displayed or press the MS key to store
(ref. Memory Storage, pg. 16). It’s that simple!
for TDS will reflect present industry practice for
B. Characteristics of the Keys
• Though your Ultrameter 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 15 seconds of inactivity the
instrument turns itself off (60 seconds in CAL mode).
• Rarely will a key be required to be held down (as in Procedure to
Select a Solution, pg. 10 or Conductivity or TDS Calibration, pg.
14).
6
7
C. Operation of the Keys (See Instrument Illustration on page 1)
1. Measurement Keys in General
Any of the 3 measurement keys in the upper part of the keypad turns on
the instrument in the mode selected. The mode 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 abandon a change (ref. Leaving Calibration, pg. 14).
2. COND, RES and TDS keys
These 3 keys are used with solution in the Conductivity Cell.
Precautions:
• While filling cell cup, ensure no air bubbles cling on the cell wall.
• If the proper solution is not selected (KCl, NaCl, 442 or USER)
refer to Why Solution Selection is Available, pg. 10 and
Procedure to Select a Solution, pg. 10.
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
COND
shown the solution type selected for conductivity. An overrange
condition will show only [- - - -] (ref. Solution Selection, pg. 10).
b. RES Key
A press of displays resistivity with units on the right. On the left
RES
is shown solution type selected for resistivity (ref. Solution Selection, pg.
10). The range of display of Resistivity is limited to between 10 kilohms
(KΩ) and 30 megohms (MΩ). A solution outside that range will only show
[- - - -] in the display .
c. TDS key
A press of displays Total Dissolved Solids with units on the
TDS
right. This is a display of the concentration of material calculated from
compensated conductivity using the characteristics of a known material.
On the left is shown solution type selected for TDS (ref. Solution
Selection, pg. 10).
3. CAL/MCLR key
CAL
If is held down for about 3 seconds, CAL mode is not entered, but
MCLR
“SEL” appears to allow Solution Selection (ref. pg. 10) with the Up or
Down keys. As in calibration, the CAL key is now an “accept” key.
While reviewing stored records, the MCLR side of the key is active to
allow clearing records (ref. Clearing a Record/Memory Clear, pg. 16).
4. UP or DOWN keys
While measuring in any parameter, the or keys activate the
MS
MR
Memory Store and Memory Recall functions.
While in CAL mode, the keys step or scroll the displayed value up or
down. A single press steps the display and holding either key scrolls the
value rapidly.
While in Memory Recall, the keys move the display up and down the stack
of records (ref. Memory Recall, pg. 16).
III. AFTER USING the ULTRAMETER
Maintenance of the Conductivity Cell
Rinse out the cell cup with clean water. Do not scrub the cell. For oily
films, squirt in a foaming non-abrasive cleaner and rinse. Even if a very
active chemical discolors the electrodes, this does not affect the
accuracy; leave it alone (ref. Cleaning Conductivity/TDS/Resistivity Cell
Cup, pg. 20).
IV. THE SPECIFIC RECOMMENDED MEASURING
PROCEDURES
If the proper solution is not selected (KCl, NaCl, 442 or USER), see
Solution Selection, Pg. 10.
NOTE
: After sampling high concentration solutions or temperature
extremes, more rinsing may be required.
A. Measuring Conductivity/Total Dissolved Solids (TDS)
1. Rinse cell cup 3 times with sample to be measured. (This
conditions the temperature compensation network and prepares
the cell.)
A press of allows you to enter the calibration mode while
CAL
MCLR
measuring conductivity or TDS. Once in CAL mode, a press of this key
accepts the new value. If no more calibration options follow, the
instrument returns to measuring (ref. Leaving Calibration, pg. 14).
8
2. Refill cell cup with sample.
3. Press or .
COND
TDS
4. Take reading. A display of [- - - -] indicates an overrange
condition.
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