Instruction Manual
(HI 981404N and HI 981405N)
pH & TDS/EC Monitors
http://www.hannainst.com
These Instruments are in
Compliance with the CE Directives
Hanna Instruments reserves the right to modify the design, construction
and appearance of its products without advance notice.
WARRANTY
HI 981404N and HI 981405N are warranted for one year
against defects in workmanship and materials when used for their in-
tended purpose and maintained according to instructions.
The probes
are warranted for a period of six months.
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 protec-
tion.
To validate your warranty, fill out and return the enclosed warranty card
within 14 days from the date of purchase.
All rights are reserved. Reproduction in whole or in part is prohibited
without the written consent of the copyright owner, Hanna Instru-
ments Inc., Woonsocket, Rhode Island, 02895 , USA.
Dear Customer,
Thank you for choosing a Hanna product. This manual will
provide you with the necessary information for the 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 [email protected].
These instruments are 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
•
HI 1283
grounding probe
•
HI 7634
TDS probe (for
HI 981404N
)
•
HI 7632
EC probe (for
HI 981405N
)
• Calibration screwdriver
• 12 VDC power adapter
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 981404N
(pH and TDS) and
HI 981405N
(pH and EC)
are specially designed to meet the needs of simple continuous
monitoring.
You can simply install the meter above the sample to be
tested for continuous measurement.
The
HI 1286
gel-filled pH electrode is replaceable and the
BNC connector is protected behind a waterproof sheath. The
unique design of the electrode provides longer life in aggres-
sive solutions.
The meter is equipped with two large LCDs which make easy
to read measurements from distance at any time.
Measurements are accurate and the meter can be cali-
brated at one or two points for pH and at a single point for
TDS and EC.
You no longer need to worry about battery changes either:
the unit runs without interruption on 12 VDC supplied
adapter.
GENERAL DESCRIPTION
FUNCTIONAL DESCRIPTION
1. Liquid Crystal Displays
2. pH 4.0/10.0 calibration trimmer
3. pH 7.0 calibration trimmer
4. BNC connector
5. Protective sheath
6.
HI 1286
pH electrode
7.
HI 1283
grounding probe
8.
HI 7632
TDS probe or
HI 7634
EC probe
9. 12 VDC power adapter
10. Power supply connector
11. EC/TDS calibration trimmer
HI 981404 and HI 981405
Range
0.0 to 14.0 pH
Resolution
0.1 pH
Accuracy
(@ 25°C/77°F)
±0.2 pH
Calibration
Manual at 1 or 2 points
Probes
HI 1286
replaceable pH electrode and
HI 1283
grounding probe (included)
Power supply
External 12 VDC (adaptor included)
Dimensions
165 x 110 x 35 mm (6.5 x 4.3 x 1.4’’)
Weight
300 g (10.6 oz.)
HI 981404 only
Range
0 to 1990 mg/L (ppm)
Resolution
10 mg/L (ppm)
Accuracy
(@ 25°C/77°F)
±2% f.s.
TDS Factor
0.7 ppm = 1 µS/cm
Temp. Compensation
Automatic from 5 to 50°C
(41 to 122°F, TDS only)
Calibration
Manual at 1 point
Probe
HI 7634
TDS probe (included)
HI 981405 only
Range
0.00 to 9.99 mS/cm (EC)
Resolution
0.01 mS/cm (EC)
Accuracy (@ 25°C/77°F)
±2% f.s.
Temp. Compensation
Automatic from 5 to 50°C
(41 to 122°F, EC only)
Calibration
Manual at 1 point
Probe
HI 7632
EC probe (included)
SPECIFICATIONS
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
interferences to radio and TV equipment.
The glass bulb at the end of the electrode is sensitive to electrostatic discharges. Avoid touching
the bulb at all times. During operation, ESD wrist straps should be worn to avoid possible damage
to the electrode by electrostatic discharges.
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.
