Hanna Instruments HI 7101 Manuale utente

www.hannainst.com

Instruction Manual

HI 7101 • HI 7102

RH Calibration Kits

Dear Customer,

Remove the calibration kit 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 kit has been

observed to function correctly. Any defective item must

be returned in its original packing.

PRELIMINARY EXAMINATION

Thank you for choosing a Hanna product.

Please read this instruction manual carefully before using

the instrument. This manual will provide you with the

necessary information for correct operation.

If you need additional technical information, do not hesitate

to e-mail us at [email protected].

HI 7101 and HI 7102 portable

chambers allows you to calibrate

your hygrometers. These kits include

two thermally isolated chambers,

each one equipped with a cap and

three bottles containing the appro-

priate precalibrated saturated salts to produce a known RH

value: two 15-gram bottles of Lithium Chloride (LiCl) and

one 33-gram bottle of Sodium Chloride (NaCl).

HI 7101 is used with HI 8564, HI 9064, HI 9065,

HI 9161 and HI 91610.

HI 7102 is used with HI 93640 and HI 8666.

They measure only 190 x 115 x 110 mm.

You can check the status of your probe and perform a quick

recalibration (with an accuracy of ±5%) by using the

Hanna mini-calibration chambers HI 7101 and HI 7102.

GENERAL DESCRIPTION

PREPARING THE CALIBRATION SOLUTIONS:

• Pour approximately 26 cc of distilled

water into a glass container.

• Immerse this container into a bath of ice

and water and shake briefly.

• Slowly add the contents of a HI 7111

bottle containing LiCl into the glass con-

tainer while continuing to shake.

• When the salt has dissolved completely, add all the

content of the second bottle of HI 7111.

• Allow the solution obtained to cool, and

then pour it into the chamber marked

"RH11.1%", making sure that no resi-

due remains on the walls of the glass

container.

• Seal the chamber well when not in use, as the LiCl

solution is extremely hygroscopic and tends to capture

the humidity present in the air causing the solution to

expand in volume and to overflow from the container.

CALIBRATION

Li Cl

11.1% Na Cl

75.4%

CALIBRATION KIT

Li Cl

11.1% Na Cl

75.4%

CALIBRATION KIT

H2O

26 cc

Li Cl

11.1% NaCl

75.4%

CALIBRATION KIT

All rights are reserved. Reproduction in whole or in part is prohibited

without the written consent of the copyright owner.

• Pour approximately 12 cc of distilled

water into the other chamber marked

"RH 75.4%".

• Add all the content of the HI 7121

bottle containing NaCl while continuously

shaking the container to avoid the for-

mation of lumps. Seal this container well

when not in use.

The calibration kit needs 4 hours for

stabilization.

• Switch the RH meter on.

• Wait for the measurement to stabilize

(this takes about 4 hours).

• Turn the low humidity trimmer (see Hygrometer Instruc-

tion Manual) until a value of 0.0% is seen on the

readout (reading between 0.0% and 1.0% RH is also

acceptable).

• Remove the probe and tightly seal the chamber con-

taining the LiCl solution.

• Remove the cap from the "RH75.4%"

chamber containing the NaCl solution

and insert the probe.

• Wait for the measurement to stabilize

(approximately 4 hours).

IST7101R2 06/05

WARRANTY

HI 7101 and HI 7102 are warranted for two years against defects

in workmanship and materials when used for their intended purpose and

maintained according to instructions. This warranty is limited to repair or

replacement free of charge.

Damages due to accidents, 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 problem. 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.

RH CALIBRATION PROCEDURE :

• Bring the calibration kit to a temperature of approxi-

mately 20°C.

• Remove the cap from the "RH 11.1%"

chamber containing the LiCl solution and

insert the probe paying attention not to

dip it into the liquid.

• Remove the adhesive sticker which covers the calibration

trimmer access holes.

Li Cl

11.1% NaCl

75.4%

CALIBRATION KIT

Na Cl

Li Cl

11.1% NaCl

75.4%

CALIBRATION KIT

4 h

CALIBRATION KIT

Li Cl

11.1% NaCl

75.4%

OFF

4 h

CALIBRATION KIT

Li Cl

11.1% NaCl

75.4%

4 h

• Turn the high humidity trimmer until the readout on

the display is 64.3%.

• Wait for 1 hour and readjust if necessary.

• Leaving the probe in the "RH 75.4%" chamber, adjust

the low humidity trimmer until the value of 75.4% is

read.

• Now, the humidity calibration is complete.

ACCESSORIES

HI 7111/P Spare saturation salts (6 x 15 g bottles of

LiCl) for low range humidity calibration

HI 7121/P Spare saturation salts (6 x 33 g bottles of

NaCl) for high range humidity calibration

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