www.4oakton.com
June 2019
1065O101_MAN_pH30_35634-30
Symbol
Menu setting
Selection
Factory default
P1
P2
P3
P4
P5
P6
P7
Select pH buffer
solution
Set low
measurement alarm
Set high
measurement alarm
Select Automatic
Lock (HOLD)
Select backlight
Select temperature
unit
Restore to factory
default
USA – NIST
0 to 14.00 pH
Off – On
Off – 1 – On
°C – °F
No – Yes
USA
0 to 14.00 pH
0
14.00
Off
1
°C
No
Setting the Parameters
When tester is turned off, long press /MEAS key to enter
parameter setting. Short press MODE/
△
key to switch from P1 to
Notes
A. Select standard pH buffer solution (P1) There are two options of
standard buffer solutions: USA series and NIST series.
B. High and Low Measurement Heads-Up Examples (P1 and P2)
Alert when measured value ≤3.20 pH:
Preset lowest value (P2) = 3.20
pH, highest value (P3) = 14.00 pH, when measured value is ≤3.20
pH (stability icon (
) displays on LCD), the red backlight appears on
display.
Alert when measured value ≥8.60 pH:
Preset highest value (P3) = 8.60
pH, lowest value (P2) = 0.00 pH, when measured value is ≥8.60 pH
(stability icon (
) displays on LCD), the red backlight appears on
display.
Alert when measured value ≤3.20 pH or ≥8.60 pH:
Preset lowest
value (P2) = 3.20 pH, highest value (P3) = 8.60 pH, when measured
value is lower than 3.20 pH or higher than 8.60 pH (stability icon (
)
displays on LCD), the red backlight appears on display.
C. Automatic Lock (P4)
Select “On” to activate auto lock function. When reading is stable for
more than 10 seconds, the tester will lock the value automatically,
and “
HOLD
” icon will appear on the bottom left of the screen. Press
CAL/
key to cancel HOLD on reading.
D. Backlight (P5)
Select “Off” to turn off backlight function, “On” to turn on backlight
unction, or “1” to have backlight last for 1 minute.
E. Temperature Unit (P6)
Select °C or °F; the factory default is °C.
F. Factory Default Setting (P7)
Select “Yes” to recover instrument calibration to the theoretical value
(pH value in zero potential is 7.00 pH, slope is 100%), parameter
setting returns to initial value. This function can be used when
instrument does not work properly in calibration or measurement.
Calibrate and measure again after resetting the unit to factory
default status.
ORP Measurement
ORP stands for Oxidation-Reduction Potential. ORP is a measure of
the cleanliness of the water and its ability to break down
contaminants. Note that ORP sensor module 35634-58 or 35634-68
must be purchased separately (see Ordering Information).
Once ORP sensor probe is attached to tester, press MODE/
△
key to
enter ORP mode. Rinse the probe in distilled water and dry it. Dip
the probe in sample solution, stir gently, and allow it to stand still
until a stable reading is reached. Get readings after measurement
stability icon (
) appears and remains on the screen.
pH
ORP (mV)*
Temperature
Range
Resolution
Accuracy
–2.00 to 16.00 pH
0.01 pH
±0.01 pH ±1 digit
Calibration points
1, 2, or 3 points;
auto buffer recognition
Automatic
temperature
compensation
(ATC)
32 to 122°F(0 to 50°C)
Range
±1000 mV
Accuracy
±0.2% full-scale
Resolution
1 mV
Range
Resolution
Accuracy
32 to 122°F (0 to 50°C)
0.1°F/°C
±0.9°F (0.5°C)
Specifications
* Note that the ORP probe 35634-58 or 35634-68 must be purchased
separately (see Ordering Information).
Display:
LCD with three-color backlight. Blue = measurement;
Green = calibration; Red = alarm
Reading lock:
HOLD icon
Power:
four AAA batteries (included); >400 hours of continuous
operation
Low-voltage warning:
battery status icon flashes
Auto power-off:
tester automatically turns off after 8 minutes of
nonuse
IP rating:
IP67 (waterproof), floats on water when sensor cap is on
Dimensions (L x W x H):
7" x 1.5" x 1. 5" (17.8 x 4 x 4 cm)
Weight:
4.7 oz (133 g)
Probe Replacement
Screw off the probe/sensor ring, unplug the probe, plug in the new
replacement probe (pay attention to the probe’s position), and
rescrew on the sensor ring.
Battery Installation
The tester uses four AAA batteries. Please install batteries accor ing
to the following steps. Note the correct direction of battery installa-
tion: the positive side (+) of every single battery must face up.
Incorrect installation of batteries will cause damage to the tester and
create a potential hazard.
Warranty
We warrant this instrument to be free from defects in material and
workmanship and agrees to repair or replace free of charge, at
option of Oakton Instruments, any malfunctioned or damaged
product attributable to responsibility of Oakton Instruments, for a
period of two years from the delivery (a six-month limited warranty
applies to sensors). This warranty does not apply to defects
resulting from actions such as misuse (violation of the instructions in
this manual or operations in the manner not specified in this
manual), improper maintenance, and unauthorized repairs.
Warranty period is the time limit to provide free service for the
products purchased by customers, not the service life of the tester
or probe.
Oakton Instruments reserves the right to update the information in
this manual without giving notice in advance.
Model
Catalog
number
Product description
pH30
pHTestr 30 pocket pH tester
Replacement sensor for pHTestr 30
Optional probe/sensor for ORP testing
(single junction)
Optional probe/sensor for ORP testing
(double junction)
35634-30
35634-03
35634-58
35634-68
Ordering Information
—
—
—
Cap Lock
Clip
Battery Lid
Lift the clip to unlock
4×AAA
Batteries
Push the clip to open the battery lid
①
②
③
④
⑤
⑥
⑦
1. Open battery lid.
2. Slide the battery cap along the direction of arrow.
3. Open the battery cap.
4. Insert the batteries
(ALL POSITIVE SIDES FACING UP).
5. Close the battery cap.
6. Slide and lock the battery cap along the direction of arrow.
7. Fit the tester’s cap while making sure to push all the way down.
The tester’s waterproof design may be compromised if the cap is
not fitted correctly.
P2…P7. Short press CAL/
key and parameter will flash, then short
press MODE/
△
key to choose desired parameter. Short press
CAL/
key to confirm parameter selection. Long press /MEAS key
to return to measurement mode.
