LaMotte pHTestr Spear User Manual

Page 2

3 Bars indicates Battery is full (100%)
2 Bars indicates 50% of the battery life is left
1 Bar indicates 25% of the battery life is left
Blinking battery casing indicates the need to replace
batteries with fresh ones as specified by manufacturer
Electrode is not in contact with solution or electrode is
failing.
Replacement sensor is not connected properly to the
tester during sensor replacement
Measured pH value or temperature value (pHTestr30)
exceeds its specified maximum or minimum value
Blinking ‘ATC’, ‘Or’ or ‘Ur’ indicates that there is a short
or open circuit at the built in temperature sensor
Temperature calibration error of attempting to calibrate
tester to a value which is out of range or under range
pH calibration error of attempting to confirm a calibration
value which is not within the specified calibration window

Self-Diagnostic Messages

E r

E r. 1

. 1

Low battery

indicator

Or / Ur

(Still)

Over range /

Under range

signal

ATC / Or /

Ur (Blinking)

E r

E r. 0

. 0

Error

Message

Large Screen

pHTestr10

pHTestr20 pHTestr30

pHTestr

pHSpear

Testers

10BNC

pH Range

-1.0 to 15.0 pH

-1.00 to 15.00 pH

Resolution

0.1 pH

0.01 pH

Relative Accuracy

0.1 pH

0.01 pH

Calibration Points

Up to 3 points

Buffer Set

USA - 4.0/7.0/10.0

USA - 4.01/7.00/10.01

Standard Selection

NIST - 4.0/6.9/9.2

NIST - 4.01/6.86/9.18

Calibration Window

+/-1.0 pH (pH 4.0

+/-1.00 pH (pH 4.01 & pH 10.01),

(USA Buffer Set

& pH 10.0),

+/-1.50 pH (pH 7.00)

Standard)

+/-1.5 pH (pH 7.0)

Calibration Window

+/-1.0 pH (pH 4.0

+/-1.00 pH (pH 4.01 & pH 9.18),

(NIST Buffer

& pH 9.2),

+/-1.25 pH (pH 6.86)

Set Standard)

+/-1.2 pH (pH 6.9)

Temperature

0-50.0°C or

Display

32.0-122.0°F

Automatic Temperature

Yes

No ( Fix Temp Compensation

Compensation (ATC)

at 25°C)

Temp Resolution

0.1 °C / °F

Temp Accuracy

0.5 °C / 0.9 °F

Temp Calibration

+/- (5°C /9 °F)

Window

from default value

Auto Off

After 8.5 minutes from last key press

User reset

Yes

Non Volatile

Yes

Memory Backup
LCD Display

Dual

Power Requirement

4 x 1.5V “A 76” micro Alkaline Batteries

Battery life

More than 500 hrs

Operating Temperature

0 – 50 °C

Tester Dimensions

6.5 “L x 1.5”dia. (165 x 38 mm)

9.75 “L x

1.5”dia.

(247 x

38 mm)

Weight

3.25 oz (90 gm)

Penetrating electrode total length

Not applicable

91 mm

Shaft length

Not applicable

31 mm

Penetrating electrode upper diameter

Not applicable

12 mm

Shaft diameter

Not applicable

7 mm

Specifications

Temperature Calibration (Only for pHTestr 30)

From the measurement mode,

1. Press the HOLD/ENT button to bring the tester to the ‘HOLD’ mode.

2. Press the CAL button for 3 seconds to switch to the °C or °F mode setting

selection screen. Pressing the CAL button continuously for 3 seconds allows you

to toggle in between the °C and °F mode setting selection screen.

3. Release the CAL button to confirm your mode selection and the display will go to

the temperature calibration mode with the upper display flashing. The upper

display shows the current measured temperature reading based on the last set

offset and the lower display shows the current measured temperature reading

based on factory default calibration.

4. Dip the tester into a solution of known temperature and allow time for the in built

temperature sensor to stabilize.

5. Press the HOLD/ENT button to set the upper display to the temperature value of

the solution.

6. Once the new temperature setting is reached, the new value is automatically

confirmed and returns to the measurement mode if no button is pressed after 5

seconds.

Notes: To exit this program without confirming the calibration, press the CAL button

before the automatic confirmation takes place.

Continuous pressing of CAL button (about 3

seconds) to toggle between temperature

setting of degrees Celsius and Farenheit

Release
CAL button
to start
entering the
new
temperature

During calibration, upper display will flash.

Press HOLD/ENT to increase offset up to

+5 °C (+9 °F) from default value. It will

roll over to -5 °C (-9 °F) from default value

and start increasing again.

When the

temperature offset

value is reached,

the new value is

automatically

confirmed if no

key is pressed

for 5 seconds.

Figure 6: Temperature Calibration Sequence ( Only for pHTestr 30DJ)

Electrode Maintenance

1. Rinse the electrode with tap water or electrode storage solution after each

measurement. Care has to be taken not to damage the sensor’s glass electrode

especially while rinsing the pHSpear penetrating tip electrode.

2. In aggressive chemicals, dirty or viscous solutions, and solutions with heavy

metals or proteins, take readings quickly and rinse electrode immediately afterward.

For the pHSpear, the remnants of the semi solid samples on the penetrating

electrode can be removed by rubbing it with some table salt and then rinsing. Mild

detergent can be used to wash the penetrating electrode clean.

3. If possible, keep a small piece of paper or sponge in the electrode cap – moistened

with clean water or electrode storage solution (NOT de-ionized water) – and close

the cap over the electrode. For pHSpear, ensure that the electrode is kept soaked

in electrode storage solution or tap water via its protective cap.

Electrode Replacement

You can replace the electrode module at the fraction of the cost of a new tester.

When the tester fails to calibrate or gives fluctuating readings in calibration standards,

you need to change the electrode.

1. With dry hands, grip the ribbed tester collar with electrode facing you. Twist the

collar counter clockwise (see picture A). Save the ribbed tester collar and

O-ring for later use.

2. Pull the old electrode module away from the tester.

3. Align the four tabs on the new module so that they match the four slots on the

tester (see picture B).

4. Gently push the module onto the slots to sit it in position. Push the smaller

O-ring fully onto the new electrode module. Push the collar over the module

and thread it into place by firmly twisting clockwise.

Note: It is necessary that you recalibrate your tester prior to measurement after an

electrode replacement.

Applications

Water quality testing • pools • spas • aquariums • aquaculture • hydroponics •

ecology studies • water and wastewater treatment • boilers • steam generators •

car washes • sanitation plants • labs • food sectors and more!

Rlbbed collar

Rotate collar

away from you

Insert Electrode Module

Electrode Module

Large

O-ring

Small O-ring

Small Tab

Large Tab

68X068042 11/04 Rev 2

Figure 8: Example of electrode module

fitting alignment

Figure 7: Removal of collar from tester

Changing Batteries

1. Open battery compartment lid (with attached lanyard loop).

2. Remove old batteries; replace with fresh ones. Note polarity

Accessories

I t e m

Eutech Instruments

Oakton Instruments

Order Code

pHTestr 10,20,30 replacement sensor

ECPHWPSEN03

OKPHWPSEN03

pHTestr10BNC replacement sensor

ECPHWPSENBNC

OKPHWPSENBNC

pHSpear replacement sensor

ECPHWPSEN04

OKPHWPSEN04

Warranty

The waterproof pHTestr10, pHTestr20, pHTestr30, pHTestr10BNC and pHSpear are warranted

to be free from manufacturing defects for 2 years and electrode module for 6 months. If

repair, adjustment or replacement is necessary and has not been the result of abuse or

misuse within the time period, please return the tester – freight prepaid – and correction

will be made without charge. Out of warranty products will be repaired on a charge basis.

Return of Items

Authorization must be obtained from your distributor before returning items for any

reason. When applying for authorization, please include information regarding the reason

the item(s) are to be returned.

Note: We reserve the right to make improvements in design, construction and appearance

of products without notice. Prices are subject to change without notice.

This manual is related to the following products:

pHTestr 10BNC pHTestr 30 pHTestr 20 pHTestr 10