Hanna Instruments HI 98143 Instruction Manual

Instruction Manual
HI 98143
pH & EC Transmitter
with Isolated Output
0 to 14 pH = 0 to 1 Vdc
HI 98143-01
0 to 10 mS = 0 to 1 Vdc
0 to 14 pH = 0 to 4 Vdc
HI 98143-04
0 to 10 mS = 0 to 4 Vdc
0 to 14 pH = 4 to 20 mA
HI 98143-20
0 to 10 mS = 4 to 20 mA
0 to 14 pH = 4 to 20 mA
HI 98143-22
0 to 10 mS = 4 to 20 mA
w w w . h a n n a i n s t . c o m
WARRANTY
These instruments are warranted for two years against defects in
workmanship and materials when used for its intended purpose and main-
tained according to instructions. Electrodes and probes are warranted
for a period of six months. This warranty is limited to repair or re-
placement free of charge.
Damages due to accident, misuse, tampering or lack of prescribed main-
tenance 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.
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 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 tech@hannainst.com.
These instruments are in compliance with the directives.
PRELIMINARY EXAMINATION
Remove the instrument from the packing material and exam-
ine it carefully. If any damage has occurred during shipment,
immediately notify your Dealer or the nearest Hanna Customer
Service Center.
Each instrument is supplied complete with 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.
GENERAL DESCRIPTION
HI 98143 is a panel mounted pH and EC transmitter specially
designed to accept signals directly from a pH electrode and
conductivity probe at the same time.
Direct connections of the probes to the transmitter assures a
positive electrical connection with no signal loss.
Four models are available, transmitting at 0-1 V, 0-4 V or 4-
20 mA signal. The output signals are prooprtional to the
input signals, but independent of changes in load or cable
capacitance.
Conductivity readings are compensated for temperature changes.
These transmitters can be connected to any pH or conductivity
controller, recorder, computer or any data monitoring device
that accepts 0 to 1 V, 0 to 4 V or 4 to 20 mA input.
The HI 98143-22 model has been specifically designed to be
used with the HI 8000 fertigation controllers.
FUNCTIONAL DESCRIPTION
1. pH offset calibration trimmer
2. pH slope calibration trimmer
3. BNC connector for pH electrode
4. pH electrode (not included)
5. Potential matching pin (not included)
6. Conductivity probe (not included)
7. 12-24 Vdc power adapter (not included)
8. pH output terminals
9. EC output terminals
10. Power supply terminals
11. EC slope calibration trimmer
12. EC offset calibration trimmer
ACCESSORIES
HI 1001 "flow-thru", double junction pH electrode with
BNC connector and 3 m (10')
HI 1283 Stainless steel grounding probe with 2 m
(6.6') cable
HI 3001 "flow-thru", 4 platinum ring EC probe with
built-in temperature sensor & 3 m (10') cable
HI 7004L pH 4.01 buffer solution, 500 mL bottle
HI 7007L pH 7.01 buffer solution, 500 mL bottle
HI 7039L 5.00 mS/cm calibration solution, 500 mL bottle
HI 70300L Electrode storage solution, 500 mL bottle
HI 7061L Electrode cleaning solution, 500 mL bottle
HI 710005 115 Vac to 12 Vdc power adapter
HI 710006 230 Vac to 12 Vdc power adapter
SPECIFICATIONS
Range
pH 0 to 14 pH
EC 0 to 10 mS/cm
Accuracy(@ 25°C/77°F)
pH ±0.5% f.s.
EC ±2% f.s.
Typical EMC Deviation
pH ±2% f.s.
EC ±2% f.s
Isolated Output (pH and EC)
HI 98143-01 0-1 V
HI 98143-04 0-4 V
HI 98143-20 4-20 mA (passive)
HI 98143-22 4-20 mA (active)
Calibration Manual, 2 point, through trimmers
pH offset and slope trimmers
EC 0 and 5 mS/cm trimmers
Temperature Compensation (EC only)
Automatic from 0 to 60°C with ß=2%/ºC
pH Electrode HI 1001 pH electrode (suggested) and
HI 1283 matching pin (not included)
EC Probe HI 3001(not included) with cell constant 2.1
Casing IP54
Power Supply 12-24 Vdc
Environment 0 to 50°C (32 to 122°F); RH max 95%
Dimensions 160 x 105 x 31mm (6.3 x 4.1 x 1.2")
Weight 280 g (9.9 oz.)
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 this glass bulb all the time. The metal band at
the end of the EC probe is sensitive to electrostatic discharges. Avoid
touching this metal band all the time. 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 voltages at the measurement surface
exceed 24 Vac or 60 Vdc. To avoid damages or burns, do not perform any
measurement in microwave ovens.
IST98143 07/05