Hanna Instruments HI 981402 User Manual

Instruction Manual

(HI 981402, HI 981403)

On-line, Waterproof

pH meter with Alarm

http://www.hannainst.com

WARRANTYWARRANTY

WARRANTY

WARRANTYWARRANTY

HI 981402 and HI 981403 are warranted for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. The electrode is warranted for a period of one year. 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 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.

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 Instruments Inc., Woonsocket, Rhode Island, 02895 , USA.

Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice.

These Instruments are in

Compliance with the CE Directives

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 EN 50081-1 and EN 50082-1.

PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION

PRELIMINARY EXAMINATION

PRELIMINARY EXAMINATIONPRELIMINARY 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.

The meter is supplied with:

• HI 1286 pH electrode for HI981402;

• HI 2114P/2 pH electrode for HI981403;

• 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.

GENERAL DESCRIPTIONGENERAL DESCRIPTION

GENERAL DESCRIPTION

GENERAL DESCRIPTIONGENERAL DESCRIPTION

HI 981402 and HI 981403 are pH meters specially designed to meet the needs of simple continuous monitoring of pH.

The housing has been completely sealed against vapors and humidity with IP54 rating.

You can simply hang the meter right above the sample to be tested for continuous measurement.

The HI 1286 and HI 2114P/2 gel-filled pH electrodes are interchangeable and the BNC connector is protected behind a waterproof sheath. The unique design of the electrode provides longer life even in aggressive solutions.

You can even select your own setpoint and be alerted of an abnormal situation with a flashing LED alarm.

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

You no longer need to worry about battery changes either: the unit runs without interruption on 12 VDC power supply.

directives

FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION

FUNCTIONAL DESCRIPTION

FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION

1. Molded eye

2. Alarm LED

3. pH 4.0 calibration trimmer

4. BNC connector

5. HI 1286 or HI 2114P/2 pH electrode

6. 12 VDC power adapter

7. Power supply connector

8. Protective sheath

9. pH 7.0 calibration trimmer

10. Liquid Crystal Display

SPECIFICATIONSSPECIFICATIONS

SPECIFICATIONS

SPECIFICATIONSSPECIFICATIONS

HI 981402 Electrode HI 1286 interchangeable pH electrode Setpoint 3.0 to 11.0 pH Hysteresis ±0.5 pH around setpoint Alarm LED blinks when pH is outside hysteresis range

HI 981403 Electrode HI 2114P/2 interchangeable pH electrode Setpoint 6.0 to 9.5 pH Hysteresis 0.5 pH below setpoint Alarm LED starts blinking when pH is over setpoint

COMMON SPECIFICATIONS Range 0.0 to 14.0 pH Resolution 0.1 pH Accuracy (@ 25°C/77°F) ±0.2 pH Typical EMC Deviation ±0.2 pH Calibration Manual with two trimmers

for offset and slope

Casing IP54 Power supply External 12 VDC (included) Dimensions 86 x 94 x 33 mm (3.4 x 3.7 x 1.3”) Weight 150 g (5.3 oz.)

OPERATIONAL GUIDEOPERATIONAL GUIDE

OPERATIONAL GUIDE

OPERATIONAL GUIDEOPERATIONAL GUIDE

pH ELECTRODE CONNECTION & MAINTENANCE

In order to protect the instrument against vapors and humidity, the BNC connector is shielded behind a waterproof sheath.

• Slide the protective sheath down. Connect the pH

electrode to the BNC connector and then slide the protective sheath back up all the way up to the casing. Since the protective sheath is rubberized to ensure maximum waterproof protection, make sure the connector is completely covered.

• Do not be alarmed if white crystals appear around the electrode protective cap. This is normal with pH electrodes and they dissolve when rinsed with water.

• When not in use, rinse the electrode with water to minimize contamination and store it with a few drops of storage (HI 70300) or pH 7 (HI 7007) solution in the protective cap. Always replace the protective cap after use.

DO NOT USE DISTILLED OR DEIONIZED WATER FOR STORAGE PURPOSES.

• If the electrode has been left dry, soak the tip in a storage (HI 70300) or pH 7 (HI 7007) solution for at least one hour to reactivate it.

• To minimize clogging and provide longer life for the pH electrode, it is recommended to clean it monthly. Immerse the tip of the electrode in HI 7061 for one hour and then rinse it with tap water.

TAKING pH MEASUREMENTS

• Turn the meter on by connecting the 12 VDC power adapter to the meter and to the mains.

• Remove the protective cap from the pH electrode and immerse the tip (4 cm/1½”) of pH electrode in the sample.

• The LCD will show the pH value. Allow the reading to stabilize and the instrument will start continuous monitoring.

Note: to prevent damages to the electrode, remove the pH

electrode from the sample before turning the meter off.

ADJUSTING THE SETPOINT

With HI 981402 and HI 981403 you can select your own setpoint and be alerted with a visual LED alarm when an abnormal situation arises.

• Unscrew and remove the rear panel and gasket seal to access the MEASURE/SET switch and the setpoint adjustment trimmer.

• Move the switch to the left (SET).

• With a small screwdriver adjust the setpoint trimmer to display the desired value in the range 3 to 11 pH (HI

981402) or 6 to 9.5 pH (HI 981403).

• Make sure the switch is moved back to the right (MEASURE Mode).

• Replace the rear panel and the gasket, ensuring the unit is properly closed.

• In HI 981402, whenever the pH reading varies by more than ±0.5 pH from the setpoint, the red alarm LED blinks to warn the user. In HI 981403 the alarm LED starts blinking when the pH reading becomes greater than setpoint and stops blinking only when the reading becomes 0.5 pH lower than setpoint.

CALIBRATIONCALIBRATION

CALIBRATION

CALIBRATIONCALIBRATION

For the greatest accuracy, frequent calibration of the instrument is recommended. In addition, the instrument must be recalibrated whenever:

a) The pH electrode is replaced. b) After testing aggressive chemicals. c) Where extreme accuracy is required. d) At least once a month.

PREPARATION

I 7

Pour small quantities of pH

7.0 (HI 7007) and pH 4.0

(HI 7004) solution into two

HI 7004 HI 7007HI 7004 HI 7007

clean beakers. For accurate calibration use two beakers for each buffer solution, the first one for rinsing the tip of the electrode and the second one for calibration. This way, contamination of the buffers is minimized.

RINSE

HI 7007

CALIBRATION

HI 7007

pH 4.0 (HI 7004) is recommended for measuring acidic samples. Use pH 10.0 (HI 7010) if subsequent samples are alkaline.

CALIBRATION PROCEDURE

• Turn the meter on and make sure that the MEASURE/SET switch is on the MEASURE mode.

• Remove the protective cap from the electrode, rinse and immerse it in a pH

7.0 buffer. Stir gently and then wait a couple of minutes for the reading to stabilize.

Note: the electrode should be sub-

merged approximately 4 cm (1½”) in the solution.

• Adjust the right hand trimmer with the calibration screwdriver until the LCD shows pH 7.0.

• Rinse and immerse the pH electrode in pH 4.0 (or pH 10.0) buffer and stir gently.

• Wait a couple of minutes and then adjust the left hand trimmer until the LCD shows the value of the second buffer.

The pH calibration is now complete.

(1½ ")

ACCESSORIESACCESSORIES

ACCESSORIES

ACCESSORIESACCESSORIES

HI 1286 Double junction, plastic body pH electrode

with 2 m (6.6’) cable and BNC connector

HI 2114P/2 Double junction, plastic body pH electrode

with 2 m (6.6’) cable and BNC connector

HI 70004P pH 4.01 solution, 20 mL sachet (25 pcs) HI 70007P pH 7.01 solution, 20 mL sachet (25 pcs) HI 7004L pH 4.01 solution, 460 mL bottle HI 7007L pH 7.01 solution, 460 mL bottle HI 7061L Electrode cleaning solution, 460 mL bottle HI 710005 12 VDC power adapter, US plug HI 710006 12 VDC power adapter, European plug HI 710012 12 VDC power adapter, Australian plug HI 710013 12 VDC power adapter, Southern Africa plug HI 710014 12 VDC power adapter, UK plug

4 cm

HI 77400P pH 4 & 7 solutions, 20 mL sachet (5 each)

CE DECLARATIONCE DECLARATION

CE DECLARATION

CE DECLARATIONCE DECLARATION

OF CONFORMITYOF CONFORMITY

OF CONFORMITY

OF CONFORMITYOF CONFORMITY

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 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 voltages at the measurement surface exceed 24 VAC or 60 VDC. To avoid damages or burns, do not perform any measurement in microwave ovens.

ISTR9814R1 07/98PRINTED IN PORTUGAL