Hanna Instruments HI981400 User manual

Instruction Manual
HI 981400
pH Indicator
with Alarm Signal for
HACCP Control
5.8
FOOD STABILITY
pH INDICATOR
HACCP
pH
pH4 pH7
Hanna Instruments reserves the right to modify the design, construction
and appearance of its products without advance notice.
WARRANTY
The HI 981400 pH Indicator is warranted for two years against
defects in workmanship and materials when used for their intended
purpose and maintained according to instructions. This warranty is lim-
ited to repair or replacement free of charge.
Damages due to accident, misuse, tampering or lack of prescribed
maintenance are not covered.
If service is required, contact the dealer from whom you purchased the
instrument. If under warranty, report the model number, date of pur-
chase, serial number and the nature of the failure. If the repair is not
covered by the warranty, you will be notified of the charges incurred. If
the instrument is to be returned to Hanna Instruments, first obtain a
Returned Goods Authorization Number from the Customer Service de-
partment and then send it with shipment costs prepaid.
When shipping any instrument, make sure it is properly packaged for
complete protection.
All rights are reserved. Reproduction in whole or in part is prohibited
without the written consent of the copyright owner.
PRELIMINARY EXAMINATION
GENERAL DESCRIPTION
www.hannainst.com
OPERATIONAL GUIDE
pH ELECTRODE
• Any combination pH electrode provided with a BNC
connector can be attached to the controller.
See our General Catalog for a complete range of Hanna
pH electrodes.
• Do not be alarmed if white crystals appear around the
electrode protective cap. This is normal with pH elec-
trodes and they dissolve when rinsed with water.
• When not in use, rinse the electrode with water and
store it with a few drops of storage (HI 70300) solution
in the protective cap.
NEVER USE DISTILLED OR DEIONIZED WATER FOR STOR-
AGE PURPOSES.
• If the electrode has been left dry, soak the tip in a
storage (HI 70300) or pH 7 (HI 7007) solution for at
least one hour to reactivate it.
• To minimize clogging and provide longer life for the pH
electrode, it is recommended to clean it monthly.
Immerse the tip of the electrode in the HI 7061 solution
for half an hour, then rinse it with tap water.
Dear Customer,
Thank you for choosing a Hanna product.
Please read carefully this manual before using the meter.
If you need additional technical information, do not hesitate
to e-mail us at [email protected].
This instrument is in compliance with the directives.
Remove the instrument from the packing material and
examine it carefully. If any damage has occurred during
shipment, immediately notify your Dealer or the nearest
Hanna Customer Service Center.
The meter is supplied with:
• Calibration screwdriver
• pH 4.01 and 7.01 buffer solutions (20 mL each)
• 12 Vdc power adapter and instructions
Note: Conserve all packing material until the instrument
has been observed to function correctly. Any defective
item must be returned in its original packing.
HI 981400 is a pH indicator specially designed for pH
control in foodstuffs.
The pH value is one of the most important indicators of food
quality and safety. pH of raw ingredients, such as milk and
meat, is measured to ensure the quality standards of
products. pH is also monitored at different stages of food
processing to guarantee safety and enhance quality.
HI 981400 is also provided with a flashing LED that
indicates if the measured pH exceeds the selected limit.
Hanna Instruments offers several pH electrodes specially
designed for the food industry, such as the FC 200B with
open junction, and the FC 230B with stainless steel blade
for direct meat measurement.
Thanks to the built-in hook, the meter can b easily hanged
right above the sample for continuous monitoring.
The meter can be calibrated at one or two points.
You no longer need to worry about battery changes because
the unit runs without interruption on 12 Vdc power supply.
FUNCTIONAL DESCRIPTION
1. Molded eye
2. Alarm LED
3. “pH 4” calibration trimmer
4. BNC connector for pH electrode
5. Liquid Crystal Display
6. “pH 7” calibration trimmer
7. Power supply connector
8. 12 Vdc power adapter (included)
5.8
FOOD STABILITY
pH INDICATOR
HACCP
pH
pH4 pH7
Any pH electrode ending in a
BNC connector can be attached
to the meter
1
2
3
4
6
5
7
8
SPECIFICATIONS
Range 0.0 to 14.0 pH
Resolution 0.1 pH
Accuracy (@ 25°C/77°F) ±0.2 pH
Typical EMC Deviation ±0.2 pH
Setpoint 4.6 to 7.5 pH
Alarm LED blinks when
measurement exceeds the setpoint value
Calibration Manual, 1 or 2 point, with
offset (pH 7) and slope (pH 4) trimmers
Power Supply 12 Vdc adapter (included)
Dimensions 86 x 110 x 43 mm (3.4 x 4.3 x 1.7’’)
Weight 150 g (5.3 oz.)

TAKING pH MEASUREMENTS
• Turn the meter on by connecting the 12 Vdc power
adapter to the meter and the mains.
• Connect a pH electrode to the indicator.
• Remove the protective cap from the pH electrode and
immerse the tip (4 cm/1½”) in the sample.
• Allow the reading to stabilize.
ADJUSTING THE SETPOINT
You can select the setpoint value in the 4.6 to 7.5 pH
range. A visual indication (red LED) will alert you when the
measured pH exceeds the set value.
• To access the MEASURE/SET switch and the setpoint
adjustment trimmer, remove the rear panel.
• Move the switch upwards to visualize the setpoint.
• With a small screwdriver
adjust the setpoint trimmer
to display the desired value.
The setpoint is factory set at
5.5 pH.
•Move the switch back downwards to return to the
measurement mode.
• Close the meter while making sure the gasket is in place
before tightening the screws.
• Whenever the pH reading
exceeds setpoint, the alarm
LED blinks to warn the user.
For better accuracy, frequent calibration of the instrument is
recommended. In addition, the instrument must be recali-
brated whenever:
a) The pH electrode is replaced
b) After testing aggressive samples
c) Where higher accuracy is required
d) At least once a month
e) When the electrode has been used for a long time
PREPARATION
Pour small quantities of pH 7.0 (HI 7007) and pH 4.0
(HI 7004) solutions into two clean beakers.
For accurate calibration use two beakers for each buffer
solution, the first one for rinsing the tip of the electrode and
the second one for calibration.
A complete range of Hanna buffer solutions in single-use
sachets is available for a more hygienic calibration.
CALIBRATION PROCEDURE
• Turn the meter on and make sure that the MEASURE/SET
switch is on the MEASURE mode.
• Remove the protective cap from
the electrode, rinse and im-
merse it in pH 7.0 buffer
solution.
• Stir gently and wait a couple
of minutes for the reading to
stabilize.
Note: The electrode should be
submerged approximately
4 cm (1½”) in the solu-
tion.
• With the supplied calibration screwdriver, adjust the
“pH 7” trimmer until the dispaly shows “pH 7.0”.
CALIBRATION
•Rinse and immerse the electrode in pH 4.0 (or pH 10)
solution (second calibration point) and stir gently.
• Wait a couple of minutes, then adjust the “pH 4”
trimmer until the display shows the “pH 4.0” (or “pH
10.0”).
The pH calibration is now complete.
4 cm
(1½")
7.0
FOOD STABILITY
pH INDICATOR
HACCP
pH
pH4 pH7
Recommendations for Users
Before using this product, make sure that it is entirely suitable for the
environment in which it is used. Operation of this instrument in residential
areas could cause unacceptable interference to radio and TV equipment.
The glass bulb at the end of the electrode is sensitive to electrostatic discharge.
Avoid touching this glass bulb at all times. During operation, ESD wrist straps
should be worn to avoid possible damage to the electrode by electrostatic
discharge.
Any variation introduced by the user to the supplied equipment may degrade
the instrument’s EMC performance.
To avoid electrical shock, do not use this instrument when voltage at the
measurement surface exceeds 24 Vac or 60 Vdc.
To avoid damage or burns, do not perform any measurement in microwave
ovens.
ACCESSORIES
FC 200B Conic, open junction pH electrode
FC 230B pH electrode with optional blade
FC 098 Stainless steel blade, 20 mm (0.8”)
FC 099 Stainless steel blade, 35 mm (1.4”)
HI 70004P pH 4.01 solution, 20 mL sachet (25 pcs)
HI 70007P pH 7.01 solution, 20 mL sachet (25 pcs)
HI 70010P pH 10.01 solution, 20 mL sachet (25 pcs)
HI 7004M pH 4.01 solution, 230 mL bottle
HI 7007M pH 7.01 solution, 230 mL bottle
HI 7007M pH 7.01 solution, 230 mL bottle
HI 70300M Electrode storage solution, 230 mL bottle
HI 7061M Electrode cleaning solution, 230 mL bottle
HI 710005 12 Vdc power adapter, US plug
HI 710006 12 Vdc power adapter, European plug
SET
MEAS
5.8
FOOD STABILITY
pH INDICATOR
HACCP
pH
pH4 pH7
www.hannainst.com
IST981400R3 05/05
SET
MEAS
HI 7007
RINSE
HI 7007
CALIBRATION