Hanna Instruments Hearing Aid HI 95771C ユーザーズマニュアル

5

for 771 Chlorine ULTRA HIGH RANGE
Range

0 to 500 mg/L

Resolution

1 mg/L from 0 to 200 mg/L; 10 mg/L above 200 mg/L

Precision

±2 mg/L @ 100 mg/L

Typical EMC Deviation ±1 mg/L

for 701 Chlorine LOW RANGE
Range

0.00 to 5.00 mg/L

Resolution

0.01 mg/L from 0.00 to 3.50 mg/L; 0.10 mg/L above 3.50 mg/L

Precision

±0.02 mg/L @ 1.00 mg/L

Typical EMC Deviation ±0.01 mg/L

Light Source

Tungsten lamp with narrow band interference filter @ 525 nm

Light Detector

Silicon Photocell

Method

Adaptation of Standard Methods for the Examination of Water and
Wastewater, 20

 4500-Cl. The reaction between chlorine

and the reagents causes a pink (701) or yellow (771) tint in the
sample.

Environment

0 to 50°C (32 to 122°F); max 95% RH non-condensing

Battery Type

1 x 9 volt

Auto-Shut off

After 10' of non-use in measurement mode;
after 1 hour of non-use in calibration mode.

Dimensions

180 x 83 x 46 mm (7.1 x 3.3 x 1.8")

Weight

290 g (10 oz.).

REQUIRED REAGENTS

Code

Description

Quantity/test

HI 95771A-0

Chlorine Ultra HR Reagent A

1 packet

HI 95771B-0

Chlorine Ultra HR Reagent B

1 packet

HI 93701-0

Free Chlorine Reagent

1 packet

20

or

• Press READ/TIMER and “SIP” will blink during

measurement.

• The instrument will show for three seconds the

CAL CHECK™ standard value, i.e. 100 for “771”
chlorine ULTRA HIGH RANGE or 1.00 for “701”
chlorine LOW RANGE.
Then the date of last calibration (e.g.:

“01.08”) appears on the display, or “01.01”
if the factory calibration was selected. In both
cases the number of the month is blinking,
ready for date input.
Note: if the display shows “ERR” the
calibration procedure failed. Verify that both

CAL CHECK™ Standards HI 95771-11 Cuvets, A
and B, are free from fingerprints or dirt and that
they are inserted correctly.

DATE INPUT
• Keep READ/TIMER pressed to scroll to the desired

month number (01-12).

• When the correct month has been set, press

ZERO/SET to confirm. Now the display will
show the day number blinking. Keep READ/
TIMER pressed to scroll to the desired day
number (01-31).
Note: it is possible to change from day  to
month 

and vice versa by pressing ZERO/SET.

• When both the day and month have been

selected, hold CAL CHECK for three seconds to
store date and calibration values. The instrument
will show for one second “Stor”, to confirm
that the new calibration data has been
accepted.

• The instrument will return automatically to

the measurement mode by  displaying "771"
or “701” on the LCD depending to which
parameter code has been selected.

or

or