Free
And Total Chlorine Portable Photometer With CAL Check - HI-97711
HI-97711
is an advanced portable photometer for the measurement of free and total
chlorine in water. This meter offers a superior optical system that
utilizes a reference detector and narrow band interference filters for
extremely fast and repeatable measurements.
- No
warm up time before taking a measurement
- Tutorial
mode for step-by-step instructions
- Uses
either powder or cost saving liquid reagents
Chlorine
is a common chemical used by many due to is disinfection, oxidation and
bleaching properties. In swimming pools, drinking water, and food
processing chlorine is used to disinfect and keep bacteria from growing.
In metal finishing it used as an oxidizer to convert cyanide in wastewater
to cyanate while in the pulp and paper industry it used to bleach wood
pulp so that paper is white. The HI-97711 is designed to measure low
levels of free and total chlorine in water up to 5.00 mg/L (ppm).
The
HI-97711 has an innovative optical system that offers superior performance
in accuracy, repeatability, and the short amount of time it takes to
perform a measurement. This compact, waterproof meter is extremely user
friendly with a tutorial mode that walks the user graphically, step by
step, in performing a measurement. The use of a backlit dot matrix LED
allows the use of virtual keys which makes the operation of the meter very
intuitive including selecting different methods, reviewing GLP data,
recalling the last 50 measurements, and customizing the meter to user
preferences.
HI-97711
is completely waterproof including the cuvette holder that is designed
with ridges to protect the optical path from getting scratched by the
cuvette and a gasketed battery compartment that holds three common AA
batteries. The compact design fits comfortable in the hand for use in the
field or on a table for benchtop use. The LCD is 71 mm (2.75″) by 37 mm
(1.6″) and is backlit for easy viewing under all conditions.
- LED
that generates very little heat
- 8
nm narrowband interference filter that is accurate to ±1 nm and offers
25% increase in light efficiency.
- Reference
detector that modulates the voltage to LED for consistent light
output.
- A
concave focusing lens that reduces errors from imperfections in the
cuvette
HI-97711
FEATURES/BENEFITS:
Stable
Light Source:
- The
internal reference system of the HI-97711 photometer compensates for
any drifts due to power fluctuations or ambient temperature changes.
With a stable source of light the readings are fast and stable
between your blank (zero) measurement and sample measurement..
High
Efficiency Light Source:
- LED
light sources offer superior performance compared to tungsten lamps.
LEDs have a much higher luminous efficiency, providing more light
while using less power. They also produce little heat, which could
otherwise affect electronic stability.
High
Quality Filters:
- Improved
optical filters ensure greater wavelength accuracy and allow a
brighter, stronger signal to be received. The end result is higher
measurement stability and less wavelength error.
Greater
Light Yield:
- A
focusing lens collects all of the light that exits the cuvette,
eliminating errors from imperfections and scratches that may be
present in the glass. The use of the convex lens reduces the need
for indexing cuvettes.
CAL
Check Functionality:
- Hanna’s
exclusive CAL Check feature allows for performance verification and
calibration of the meter using NIST traceable standards. Our CAL
Check standard vials are developed to simulate a specific absorbance
value at each wavelength to verify the accuracy of subsequent
readings.
Mulitple
Measurement Methods:
- Users
can select the use of powder reagents supplied in packets or the use
of low cost liquid reagents supplied in a dropper bottle.
Built-in
Reaction Timer:
- Waiting
the proper reaction time is of key importance when performing
colorimetric measurements. The countdown timer displays the time
remaining until a measurement will be taken, ensuring consistent
results between sample measurements and users.
Large
Cuvette Size:
- The
sample cell of the HI-97711 fits a round, glass cuvette with a 25 mm
path length. The relatively long path length of the sample cuvette
allows the light to pass through more of the sample solution,
ensuring accurate measurements even in low absorbance samples.
Intuitive
Dot Matrix Display:
- The
H-I97711 is designed with a backlit, graphic LCD. With virtual keys,
a battery status indicator, and error messages. Users will find the
meter interface intuitive and easy to read. A dedicated help key
provides information relating to the current meter operation, and
can be used at any stage in the setup or measurement process to show
contextual help.
Auto-off
Protection:
- The
meter uses three common AA batteries that allow for about 800
measurements to be taken. The auto-off feature automatically shuts
off the meter after 15 minutes of inactivity in order conserve
battery life.
Specifications:
Free
Chlorine Range |
0.00
to 5.00 mg/L (as Cl2) |
Free
Chlorine Resolution |
0.01
mg/L |
Free
Chlorine Accuracy |
±0.03
mg/L ±3% of reading |
Total
Chlorine Range |
0.00
to 5.00 mg/L (as Cl2) |
Total
Chlorine Resolution |
0.01
mg/L |
Total
Chlorine Accuracy |
±0.03
mg/L ±3% of reading |
Chlorine
Method |
Adaptation
of the EPA 330.5 DPD method |
Photometer/Colorimeter
Light Source |
Light
emitting diode |
Photometer/Colorimeter
Light Detector |
silicon
photocell with narrow band interference filter @ 525 nm |
Bandpass
Filter Bandwidth |
8
nm |
Bandpass
Filter Wavelength Accuracy |
±1.0
nm |
Cuvette
Type |
round,
24.6 mm diameter (22 mm inside) |
GLP |
date,
time of last calibration |
Display |
128
x 64 pixel B/W LCD with backlight |
Logging
Type |
automatic
logging |
Logging
Memory |
50
measurement |
Battery
Type/Life |
1.5V
AA battery (3 pcs.) / > 800 measurements (without backlight) |
Automatic
Shut-Off |
After
15 minutes of inactivity (30 minutes before a READ measurement) |
Environment |
0
to 50°C (32 to 122°F); relative humidity |
Weight |
380
g (13.4 oz.) with batteries |
Dimensions |
142.5
x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0") |
Inclusions |
HI-97711
is supplied with cuvettes (2), caps (2), plastic inserts for
cuvettes (2), 1.5V AA batteries (3), instruction manual, and
instrument quality certificate. / |
Kit |
HI-97711C
is supplied with CAL-Check standards, cuvettes (2), caps (2),
plastic inserts for cuvettes (2), scissors, cuvette cleaning cloth,
1.5V AA batteries (3), instruction manual, and instrument quality
certificate. |
Brand : Hanna Instruments