Hanna Instruments hi 98143-04 User Manual

Instruction Manual

HI 98143

pH/EC isolated

Transmitter

http://www.hannainst.com

This Instrument is 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 98143 is warranted for two years against defects in workman-
ship and materials when used for its intended purpose and maintained
according to instructions.

The electrode and the probe are war-

ranted 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 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.

HI 98143-04

0 to 14 pH = 0 to 4 VDC

0 to 10 mS = 0 to 4 VDC

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
EN 50081-1 and EN 50082-1.

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.
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 98143 is a panel mounted pH/EC transmitter specially
designed for long distance measurement of pH and Electrical
Conductivity in industrial applications.
The pH and EC signals are transmitted through two wires.
Inputs are isolated to avoid any interference with the
receiving device.
Probes connectors, power supply, contacts and calibration
trimmers are easy to reach directly on the front panel.
For in-line applications the pH electrode should be HI1001
and conductivity probe should be HI3001. HI1001 is a
combined double junction pH electrode with BNC and 3 m
(10’) cable. HI3001 is a 4-ring conductivity probe with
platinum sensors and internal temperature sensor to com-
pensate reading for temperature changes. Both the probes
have external threads for easy installation in continuous
flow-thru monitoring, either in-line or tank applications.
They can resist up to 80 C (176 F) and 6 bar (87 psi).
The

HI 98143 is supplied with a differential input. An HI

1283 stainless steel probe to prevent potential grounding
problems can be connected thus ensuring longer life for your
electrode.
Measurements are accurate and the meter can be cali-
brated at one or two points.

GENERAL DESCRIPTION

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. EC 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

SPECIFICATIONS

Range

0 to 14 pH

0 to 10 mS/cm

Accuracy(@ 25°C/77°F)

±0.5% f.s.

±2% f.s.

Typical EMC Deviation

±2% f.s.

±2% f.s

Output

0 4 V (isolated)

Temperature Compensation

Automatic from 0 to 60 C with ß=2%/ºC

Calibration

Manual with two trimmers

Offset: ±2pH; Slope: 80 110%

Slope ±20%

CONNECTIONS

pH ELECTRODE CONNECTION

• Connect the pH electrode to the BNC connector (#3)

and the Potential Matching Pin to the PM terminal.

EC PROBE CONNECTION

• Probe wires are color coded for an easy installation. See

table below for proper installation.

Terminal #

Probe Wire Color

Cond.Probe 1

green

Cond.Probe 2

white

Cond.Probe 3

red

Cond.Probe 4

blue

Temp.Sens. 1

brown

Temp.Sens. 2

grey

yellow-green

POWER CONNECTION

• Connect a 2-wire cable to the 12 24 VDC power source

paying careful attention to its polarity.

OUTPUT CONNECTION

• Connect a 2-wire cable from the pH output terminals

(#8) to the pH receiver and another 2-wire cable from
the EC output terminals to the EC receiver paying
attention to the polarity. Voltages at these contacts vary
proportionally to the measured pH and EC values in the
range of 0 4 V.

pH Probes

HI1001 pH electrode (suggested) and

HI1283 Potential Matching Pin (not included)

EC Probe

HI3001(not included) with cell constant 2.1

Casing

IP54

Power supply

External 12 to 24 VDC (not included)

Dimensions

160x105x31mm (6.2x4.1x1.2”)

Weight

280 g (9.9 oz.)

OPERATIONAL GUIDE

•

HI 98143 may be wall-mounted at any convenient
location close to the measurement site. To minimize
thermal drifts due to extreme temperature fluctuations,
particularly if measurements are conducted outdoors, it
is recommended that the transmitter is protected in a
casing.