WARRANTY
HI 991404
and
HI 991405
are
warranted for two years
against
defects in workmanship and materials when used for their intended purpose
and maintained according to instructions.
The probes are warranted for
six months
. This warranty is limited to repair or replacement free of charge.
Damages due to accident, misuse, tampering or lack of prescribed mainte-
nance are not covered.
If service is required, contact the dealer from whom you purchased the instru-
ment. 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 ship-
ment 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 with-
out the written consent of the copyright owner.
Remove the instrument from the packing material and exam-
ine it carefully. If any damage has occurred during shipment,
notify your dealer or the nearest Hanna Service Center.
The meters are supplied with:
•
HI 1293D
pH electrode and
HI 7630
fixed EC probe
•
pH 4.01 and 7.01 buffer solutions (20 mL each)
• 1413 µS/cm calibration solution (20 mL), for
HI 991404
• 12.88 mS/cm calibration solution (20 mL), for
HI 991405
• 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 991404
and
HI 991405
have been designed for continu-
ous, high accuracy pH, EC/TDS and temperature measurements.
These indicators continuously monitor the three most impor-
tant nutrient parameters in hydroponics, greenhouses and
horticultural applications with a single instrument.
These micro-processor based meters feature a large, dual level,
backlit LCD to give instantaneous readings of pH, EC or TDS
and temperature, even from a distance.
Calibration and temperature compensation are automatic,
while the TDS conversion factor and temperature coefficient are
user adjustable for application-specific measurements.
The
HI 1293D
advanced, non-clogging double-junction pH
electrode and the rugged conductivity probe will withstand
even the most aggressive environments.
The instruments are powered by a 12 Vdc transformer and
are easy to install and use.
GENERAL DESCRIPTION
FUNCTIONAL DESCRIPTION
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 dis-
charges. Avoid touching this glass bulb at all times. During operation, ESD wrist
straps should be worn to avoid possible damage to the electrode by electro-
static 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 voltages at the
measurement surface exceed 24 Vac or 60 Vdc.
To avoid damages or burns, do not perform any measurement in microwave
ovens.
IST991404R2 07/05
Range
0.0 to 14.0 pH / 0.0 to 60.0°C / 32.0 to 122.0°F
0 to 3999 µS/cm / 0 to 2000 ppm (
HI 991404
)
0.00 to 20.00 mS/cm / 0.00 to 10.00 ppt (
HI 991405
)
Resolution
0.1 pH / 0.1°C / 0.1°F
1 µS/cm / 1 ppm (
HI 991404
)
0.01 mS/cm / 0.01 ppt (
HI 991405
)
Accuracy (@20ºC/68ºF)
±0.1 pH / ±0.5°C / ±1°F / ±2% FS for EC/TDS
Typical EMC Deviation
±0.1 pH / ±1°C / ±2°F / ±2.5 FS for EC/TDS
Temperature Compensation
Automatic,
with
β
adjustable from 0.0 to 2.4%/ºC for EC/TDS
TDS Factor
Adjustable form 0.45 to 1.00 (CONV)
Probes
HI 1293D
pH electrode (included)
HI 7630
conductivity probe (fixed)
pH Calibration
Automatic, 1 or 2 point
with auto-buffer recognition
EC/TDS Calibration
Automatic, 1 point
Power Supply
12 Vdc power adapter (included)
Environment
0 to 50ºC (32 to 122ºF);
RH max 95% non-condensing
Dimensions / Weight
160 x 105 x 31 mm (6.2x4.1x1.2’’) / 190 g (6.7 oz.)
1. Liquid Crystal Display
2. ON/OFF/MODE button
3. Power supply connector
4. 12 VDC power adapter
5.
HI 1293D
pH-electrode with differential input, pipe
thread 1/2’’ NPT
6. EC/TDS/Temperature probe, pipe thread 1/2’’ NPT
(works also as matching pin for pH-electrode)
7. DIN connector
8. SET/HOLD button
w w w . h a n n a i n s t . c o m
Instruction Manual
(HI 991404 - HI 991405)
Hanna Instruments reserves the right to modify the design, construction and
appearance of its products without advance notice.
Dear Customer,
Thank you for choosing a Hanna product.
This manual will provide you with the necessary information
for a correct operation.
If you need additional technical information, do not hesitate
to e-mail us at
.
These instruments are in compliance with the directives.
