Instruction Manual
(HI 981402)
On-line, Waterproof
pH meter with Alarm
w w w . h a n n a i n s t . c o m
Hanna Instruments reserves the right to modify the design, construction
and appearance of its products without advance notice.
WARRANTY
HI 981402 is warranted for two years
against defects in work-
manship and materials when used for their intended purpose and
maintained according to instructions.
The electrode is warranted for a period of six months.
This warranty is limited 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 purchase,
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 department 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.
Dear Customer,
Thank you for choosing a Hanna product.
This manual will provide you with the necessary information
for correct operation of the meter. Please read it carefully
before using the meter.
If you need additional technical information, do not hesitate
to e-mail us at
.
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:
•
HI 1286
pH electrode
• Calibration screwdriver
• 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.
PRELIMINARY EXAMINATION
HI 981402
is a pH meter specially designed to meet the
needs of simple continuous monitoring of pH.
The housing has been completely sealed against vapors and
humidity with IP54 rating.
Simply hang the meter right above the sample to be tested
for continuous measurement.
The
HI 1286
gel-filled pH electrode is interchangeable and
the BNC connector is protected behind a waterproof sheath.
The unique design of the electrode provides longer life even
in aggressive solutions.
This instruemnt also provides for a selectable setpoint and
alerts the user with a flashing LED alarm when an abnor-
mal situation occurs.
Measurements are highly accurate and the meter can be
calibrated at one or two points.
You no longer need to worry about battery changes either:
the unit runs without interruption on 12 Vdc power supply.
GENERAL DESCRIPTION
FUNCTIONAL DESCRIPTION
1. Molded eye
2. Alarm LED
3. “pH 4” calibration trimmer
4. BNC connector
5.
HI 1286
pH electrode
6. 12 VDC power adapter
7. Power supply connector
8. Protective sheath
9. “pH 7” calibration trimmer
10. Liquid Crystal Display
pH ELECTRODE CONNECTION & MAINTENANCE
In order to protect the instrument against
vapors and humidity, the BNC connector is
shielded behind a waterproof sheath.
• Slide the protective sheath down. Connect the pH
electrode to the BNC connector and then slide the
protective sheath back up. Since the protective sheath is
rubberized to ensure maximum waterproof protection,
make sure the connector is completely covered.
• 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.
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
Calibration
Manual, through offset and slope trimmers
pH Electrode
HI 1286
(included)
Setpoint
3.0 to 11.0 pH
Hysteresis
±0.5 pH around setpoint
Alarm
LED blinks when pH is outside hysteresis range
Casing
IP54
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.)
OPERATIONAL GUIDE
