Hanna Instruments HI 93706 User Manual

Instruction Manual

HI 93706

Phosphorus ISM

www.hannainst.com

Warranty

HI 93706 is warranted for two years against defects in workmanship and materials when used for its intended purpose and maintained according to instructions.

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.

This Instrument is 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.

This instrument is in compliance with directives.

Preliminary Examination

Remove the instrument from the packing material and examine it carefully to make sure that no damage has occurred during shipment. If there is any damage, notify your Dealer.

Each Ion Specific Meter is supplied complete with

• 9V Battery

• Two Sample Cuvets and Caps

• One Transport Cap

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

The HI 93706 meter measures the phosphorus content in water and wastewater in the 0.0 to 15.0 mg/L (ppm) range.

The meter uses an exclusive positive-locking system to ensure that the cuvet is in the same place every time it is placed into the measurement cell.

The reagents are in liquid and powder form and are supplied in bottles and in packets. The amount of reagent is precisely dosed to ensure maximum repeatability.

Display codes aid the user in routine operations. The meters have an auto-shut off feature that will turn the

instrument off after 10 minutes of non-use.

Specifications Display Code Guide

This indicates that the meter is in a ready state and zeroing can be performed.

Sampling in Progress. This prompt appears each time the meter is performing a measurement.

This indicates that the meter is in a zeroed state and measurement can be performed.

A zero reading was not taken. Insert a sample before adding reagent and press ZERO.

Under range. A blinking "0.00" indicates that the sample absorbs less light than the zero reference. Check the procedure

SPECIFICATIONS

Range 0.0 to 15.0 mg/L Resolution 0.1 mg/L Accuracy ±0.3 mg/L ±4% of reading Typical EMC ±0.2 mg/L

Deviation Light Source Light Emitting Diode @ 470 nm Method Adaptation of the Standard Methods

for the Examination of Water and Wastewater (18th edition), amino acid

method. The reaction between phosphorus and reagents causes a blue tint in the sample

Light Detector Silicon Photocell Environment 0 to 50°C (32 to 122°F);

max 95% RH non-condensing

Battery Type/Life 1 x 9 volt/40 hours Auto-Shut off After 10' of non-use Dimensions 0 x 83 x 46 mm (7.1 x 3.3 x 1.8") Weight 290 g (10 oz.)

REQUIRED REAGENTS

Code Description Quantity

HI 93706A-0 Molybdate 10 drops HI 93706B-0 Amino Acid Powder 1 packet

REAGENT SETS

HI 93706-01 Reagents for 100 tests HI 93706-03 Reagents for 300 tests

and make sure you use the same cuvet for reference (zero) and measurement.

Over range. A flashing value higher than the maximum concentration readable (see specifications) indicates that the sample absorbs too much light, meaning that the concentration is too high. Dilute the sample.

Light over range. The cuvet is not inserted correctly and an excess ambient light is reaching the detector. If the cover is properly installed, then contact your dealer or the nearest Hanna Customer Service Center.

Light under range. The zero sample is too dark for proper zeroing. If this is not the case, contact your dealer or the nearest Hanna Customer Service Center.

The "V" indicates that the battery voltage is getting low and the battery needs to be replaced.

This indicates that the battery is dead and must be replaced.

Note: once this indication is displayed, the meter will lockup. Change the battery to restart.

Operational Guide Tips for an Accurate Measurement Accessories

• Replace the cap and shake gently until dissolution is

MEASUREMENT PROCEDURE

• Turn the meter on by pressing ON/OFF.

• When the LCD displays “- - -”, it is ready.

• Fill the cuvet with 10 mL of unreacted sample, up to the

10 mL

mark, and replace the cap.

• Place the cuvet into the holder and ensure that the notch on the cap is positioned securely into the groove.

• Press ZERO and “SIP” will appear on the display.

OFF

complete.

• Reinsert the cuvet into the instrument.

• Press READ TIMED and the display will show the countdown prior to the measurement or, alternatively, wait for 5 minutes and press READ DIRECT. In both cases “SIP” will appear during measurement.

5’

READ

TIMED

READ

DIRECT

The instruction listed below should be carefully followed during testing to ensure best accuracy.

• Do not touch the cuvet walls with hands.

• In order to maintain the same conditions during the zeroing and the measuring phases, it is necessary to close the cuvet to prevent any contamination.

• Do not let the test sample stand too long after reagent is added or accuracy will be lost.

• Whenever the cuvet is placed into the measurement cell, it must be completely free of fingerprints, oil or dirt. Wipe it thoroughly with HI 731318 or a lint-free cloth prior to insertion.

• It is important that the sample does not contain any debris. This would corrupt the readings.

• It is possible to take multiple readings in a row, but it is recommended that a zero reading be taken for each sample and that the same cuvet is used for zeroing and measurement.

• It is important to discard the sample immediately after

REAGENT SETS

HI 93706-01 Reagents for 100 tests HI 93706-03 Reagents for 300 tests

OTHER ACCESSORIES

HI 710009 Blue rubber boot HI 710010 Orange rubber boot HI 721310 9V battery (10 pcs) HI 731318 Tissue for wiping cuvets (4 pcs) HI 731321 Glass cuvets (4 pcs) HI 731325 Caps for cuvets (4 pcs) HI 93703-50 Cuvets cleaning solution (230 mL).

CE Declaration of Conformity

the reading is taken because the glass might become

ZERO

• The instrument directly displays concentration in mg/L of phosphorus on the Liquid Crystal Display.

permanently stained.

• Shaking the cuvet can generate bubbles in the sample, causing higher readings. To obtain accurate

• Wait for a few seconds and the display will show “-0.0-”. Now the meter is zeroed and ready for measurement.

• Remove the cuvet.

• Add 10 drops of HI 93706A-0 Phosphorus Reagent A (Molybdate) to the cuvet.

• Add the content of one packet of HI 93706B-0 Phosphorus Reagent B (Amino Acid) to the cuvet.

x 10

INTERFERENCES

Interference may be caused by: Sulfide Chloride above 150000 mg/L as Cl Calcium above 10000 mg/L as CaCO Magnesium above 40000 mg/L as CaCO Ferrous iron above 100 mg/L. Color or suspended matter in large amounts will cause

interference. Therefore the turbidity should be removed by prior filtration.

HI 93707 - Nitrite Low RangeHI 93707 - Nitrite Low Range

HI 93707 - Nitrite Low Range

HI 93707 - Nitrite Low RangeHI 93707 - Nitrite Low Range

–

measurements, remove such bubbles by swirling or by gently tapping the vial.

• All the reaction times reported in this manual are referred to 20°C (68°F). As a general rule of thumb, they should be doubled at 10°C (50°F) and halved at 30°C (86°F).

Battery Replacement

Battery replacement must only take place in a non-hazardous area using a 9V alkaline battery.

Simply slide off the battery cover on the back of the meter. Detach the battery from the terminals and attach a fresh 9V battery while paying attention to the correct polarity. Replace the battery and the cover.

SLID

OFF

Recommendations for Users

Before using these products, make sure that they are entirely suitable for the environment in which they are used.

Operation of these instruments in residential area could cause unacceptable interferences to radio and TV equipments, requiring the operator to take all necessary steps to correct interferences.

Any variation introduced by the user to the supplied equipment may degrade the instruments' EMC performance.

To avoid damages or burns, do not perform any measurement in microwave ovens.

IST93706R5 09/03