Hanna Instruments HI 98143-22 User Manual

Instruction Manual

HI 98143 pH/EC isolated

Transmitter

0 to 14 pH = 4 to 20 mA

HI 98143-22

0 to 10 mS = 4 to 20 mA

These Instruments are in http://www.hannainst.com Compliance with the CE Directives

WARRANTY

HI 98143 is warranted for two years against defects in workmanship and materials when used for their intended purpose and maintained

according to instructions. The electrode and the probe are 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 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 department 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.

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 [e-mail].

This instrument is in compliance with the directives.

PRELIMINARY EXAMINATION

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.

GENERAL DESCRIPTION

HI 98143 is a pH/EC transmitter specially designed for long distance measurements of pH and Electrical Conductivity in industrial applications. It can be either panelor wallmounted.

The pH and EC signals 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 recommended pH electrode is the HI1001 while the conductivity probe is the HI3001.

HI1001 is a combined double junction pH electrode with BNC and 3m cable; HI3001 is a 4-ring conductivity probe with platinum sensors and an internal temperature sensor to compensate reading for temperature changes.

Both probes have external threads for easy installation in continuous flow-thru monitoring, for either in-line or tank applications.

They can resist up to 80 C (176 F) and 6 bar (87 psi).

The instrument is supplied with a differential input. An HI1283 stainless steel probe can be connected to prevent potential grounding problems and ensure longer life to the electrode.

Measurements are accurate and the meter can be calibrated at one or two points.

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			pH	0 - 14
			EC	0 - 10 mS/cm
Accuracy			pH	±0.5% f.s
(@25 C/77 F)			EC	±2%	f.s.
Typical EMC			pH	±2%	f.s.
Deviation			EC	±2%	f.s.
Active Output			pH	4 20 mA (isolated)
			EC	4 20 mA (isolated)
Temp.Compensation			Automatic from 0 to 60 C with ß=2%/ C
Calibration		pH	Manual with two trimmers
			Offset: ±2pH; Slope: 80 110%
		EC	Slope: ±20%
pH	Probes	HI1001 pH electrode (suggested) and
		HI1283 Potential Matching Pins (not included)
EC	Probe	HI3001 (not included) with cell constant 2.1
Power supply		External, 12 to 24 VDC (not included)
Dimensions		160 x 105 x 31mm (6.2 x 4.1 x 1.2”)
Weight			280 g (9.9 oz)

CONNECTIONS pH ELECTRODE CONNECTION

•Connect the pH electrode to the BNC connector and the Potential Matching Pin to the PM terminal.

EC PROBE CONNECTION

•Probe wires are color coded for an easy operating. Follow the 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
SH	yellow-green

POWER CONNECTION

•Connect a 2-wire cable to the 12 24 VDC power source paying attention to its polarity.

OUTPUT CONNECTION

•Connect the pH output terminals to the pH receiver with a 2-wire cable, and the EC output terminals to the EC receiver with a second 2-wire cable. Pay attention to the polarity. At these contacts currents vary proportionally to the measured pH and EC values between 4 and 20 mA.

OPERATIONAL GUIDE

•To minimize thermal drifts due to extreme temperature fluctuations and in case of outdoors measurements, it is recommended to protect the transmitter with a proper casing.

•Connect pH electrode, EC probe, power supply and receiving devices to the transmitter by following the previous instructions.

•Remove the protective cap from the pH electrode and immerse it into the sample, at least 4 cm.

•When using the matching pin, dip it together with the pH electrode; otherwise, connect its terminal to the reference with a jumper wire.

•Immerse the EC probe in the sample.

•For continuous flow-thru measurements, the probes can be easily installed in any standard ½” pipe tee. Use Teflon tape between the probe and the pipe to ensure a leak free joint. Take care not to overtighten it, as excessive pressures can cause probe damage.