Nova-Tech Oakton Testr 35 - Manual (Page 4)

Conductivity Calibration (Automatic):
For best results, calibrate with certified accurate conductivity calibration standards.
Selection of multi-point calibration will allow up to three of the following values, while
Single-point calibration will allow only one; choose 84 μS, 1413 μS, or 12.88 mS.
Conductivity Range Automatic Calibration Value Available with
0.0 – 200.0
µ
S 84
µ
S PCS only
201 – 2000
µ
S 1413
µ
S PC or PCS
2.01 – 20.00 mS 12.88 mS PC or PCS
1. Press to turn meter on and to select conductivity mode as needed.
2. Rinse the sensor with clean water. Immerse the sensor into your standard and
press . The primary display will show the un-calibrated value, while the
secondary display display should search for and lock on the closest automatic
calibration value.
3. Allow the primary display to stabilize, then press to confirm the calibration
value. The primary value will blink briefly before returning to measurement mode.
4. Repeat steps 2 & 3 with additional calibrations standards if desired.
Conductivity, TDS, & Salinity Calibration (Manual):
For best results, calibrate with certified accurate calibration standards. 1 point per
range.
Conductivity (3-pt) TDS (3-pt) Salinity (1-pt)
0.0 – 200.0 µS* 0.0 – 99.9 ppm*
201 – 2000 µS 100 – 999 ppm
2.01 – 20.00 mS 1.00 – 10 ppt
1.00 – 10 ppt
*
Range only available with PCS Testr 35
1. Press to turn meter on and to select conductivity, TDS, or salinity
mode.
2. Rinse the sensor with clean water. Immerse the sensor into your standard and
press . The primary display will show the un-calibrated value, while the
secondary display will display the factory default calibration.
3. Press or to manually adjust the primary display to your calibration
standard.
4. Press to confirm the new adjusted value. The primary value will blink briefly
before returning to measurement mode.
5. Repeat steps 2 & 3 with additional calibration standards if desired.
Hold Function:
For prolonged observation of a reading, press during measurement mode to
freeze the display. The “HOLD” indicator will display when the reading is held. To
release the held value and resume live measurement, press .
Sensor Replacement:
Your instrument includes a replaceable sensor (Eutech PCSENSOR - 01X097108 /
Oakton 35425-50). If the tip gets damaged or as the sensor wears over time, the
entire sensor can easily be replaced. To remove the old sensor, simply twist off the
ribbed collar and pull the sensor straight out.
To install the new sensor, line up the tabs and 8 pins of the
sensor to the instrument body. Twist ribbed collar back on to
keep waterproof rating and secure sensor. The O-rings
should create a watertight seal and provide some resistance
when twisting.
Battery Replacement:
Your Testr includes (4) 1.5V alkaline batteries. LR44 or A76 battery types are suitable
and commonly available. Replace all (4) batteries together.
Waiting too long to replace the batteries can lead to inaccurate
readings and is the most common cause of problems. Twist and
unscrew to remove the battery cover at the top of the Testr. Pull
on the white ribbon to remove the batteries. Note the correct
polarity of the instrument before installing. The flat side of the battery is +. Place new
batteries on top of the white ribbon so they can be easily removed next time. Hand
tighten the battery cover to keep waterproof rating.
Storage:
The sensor does not require special storage. Rinse with clean water after use and
cover the sensor with the included cap. Keep at room temperature away from extreme
temperatures. The sensor can easily be re-hydrated by soaking if stored dry.
Message Indicates
>75% battery life remaining
50-75% battery life remaining
25-50% battery life remaining
No bars & blinking = replace batteries
Err
Calibration error, usually attempting to calibrate to a value which is
out of range or under range.
Unstable pH reading
/ Slow response
Broken or dirty sensor. Clean, rehydrate, and replace if necessary.
Could also be due to low battery condition or sample with
temperature that has not stabilized.
“Ur” (Under range)
or
“Or” (Over range)
Measured value is out of range. Most often caused by dry electrode
that needs to be re-hydrated / soaked. Sensor may not be
completely submersed or is not connected to Testr body properly.
Meter not responsive If “Hold” on display, press Hold key to resume live measurement.
Secondary display
continually scrolls
The automatic calibration standard is not within expected calibration
range. Use fresh standard or an alternate calibration standard.
Warranty:
The waterproof Testrs are warranted to be free from manufacturing defects for 1 year
and the electrode module is warranted for 6 months, unless otherwise stated. If repair,
adjustment or replacement is necessary and has not been the result of abuse or
misuse within the time period specified, 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.
For more information on our products, please contact us or visit our websites:
Oakton Instruments
625 E Bunker Court
Vernon Hills, IL 60061, USA
Tel: (1) 888-462-5866
Fax: (1) 847-247-2984
[email protected]
www.4oakton.com
Eutech Instruments Pte Ltd
Blk 55, Ayer Rajah Crescent,
#04-16/24, Singapore 139949
Tel: (65) 6778 6876
Fax: (65) 6773 0836
[email protected]
www.eutechinst.com