How it Works
Hanna Instruments
Loading...
HI 96101
User Manual
36 pgs2.54 Mb0

Hanna Instruments HI 96101 User Manual

Instruction Manual
HI 96101C
pH, Chlorine, Cyanuric Acid,
Iodine, Bromine, Iron LR
ISM
www.hannainst.com
1
Dear Customer, Thank you for choosing a Hanna product. This manual will provide you with the necessary
information for the correct use of the instrument. 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.
TABLE OF CONTENTS
FUNCTIONAL DESCRIPTION ................................................................................................ 10
ERRORS AND WARNINGS .................................................................................................. 12
GENERAL TIPS FOR AN ACCURATE MEASUREMENT ............................................................. 14
STARTUP ........................................................................................................................... 15
RANGE SELECTION ............................................................................................................. 16
MEASUREMENT PROCEDURE ............................................................................................. 16
VALIDATION PROCEDURE ................................................................................................... 28
CALIBRATION PROCEDURE ................................................................................................. 29
GLP ................................................................................................................................... 32
BATTERY MANAGEMENT .................................................................................................... 33
BATTERY REPLACEMENT .................................................................................................... 33
ACCESSORIES ..................................................................................................................... 34
WARRANTY........................................................................................................................ 35
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.
2
PRELIMINARY EXAMINATION
Please examine this product carefully. Make sure that the instrument is not damaged. If any damage occurred during shipment, please notify your Dealer.
Each HI 96101 Ion Selective Meter is supplied complete with:
• Two Sample Cuvettes and Caps
• Seven CAL CHECK standard cuvettes HI 96101KIT
• 9V Battery
• Tissue for wiping cuvettes
• Instrument quality certificate
• Instruction Manual
• Rigid carrying case
Note:Save all packing material until you are sure that the instrument works correctly. Any
defective item must be returned in its original packing.
3
GENERAL DESCRIPTION
The HI 96101 is an auto diagnostic portable microprocessor meter that benefits from Hanna’s years of experience as a manufacturer of analytical instruments. It has the advanced optical system based on a special tungsten lamp and a narrow band interference filter that allows most accurate and repeatable readings. All instruments are factory calibrated and the electronic and optical design minimizes the need of frequent calibration.
With the powerful CAL CHECKTM validation function, you are able to validate good performance of your instrument at any time. The validation procedure is extremely user friendly. Just use the exclusive HANNA ready-made, NIST traceable standards to verify the performance of the instrument and recalibrate if necessary.
All instruments are splash waterproof and the lamp and filter units are protected from dust or dirt by a transparent cup. This makes the instruments fulfill field applications. Display messages aid the user in routine operation. The meter has an auto-shut off feature that will turn off the instrument after 10 minutes of non use in
calibration mode
The meter uses an exclusive positive-locking system to ensure that the cuvette is in the same position every time it is placed into the measurement cell. It is designed to fit a cuvette with a larger neck making it easier to add both sample and reagents. The cuvette is made from special optical glass to obtain best results.
The HI 96101 meter measures pH, Free and Total Chlorine, Cyanuric Acid, Iodine, Bromine and Iron Low Range content in water and wastewater samples in the following ranges:
.
measurement mode
or after 1 hour if left in
Parameter Range
pH 6.5 to 8.5 pH Free Chlorine 0.00 to 5.00 mg/L Total Chlorine 0.00 to 5.00 mg/L Cyanuric Acid 0 to 80 mg/L Iodine 0.0 to 12.5 mg/L Bromine 0.00 to 10.00 mg/L Iron LR 0.00 to 1.60 mg/L
The reagents are in liquid and powder form depending on the parameter and they are supplied in dropper bottles and packets. The amount of reagent is precisely dosed to ensure the maximum repeatability.
4
ABBREVIATIONS
degree Celsius
°C:
degree Fahrenheit
°F:
milligrams per liter. mg/L is equivalent to ppm (parts per million)
mg/L:
milliliter
mL:
millivolts
mV:
US Environmental Protection Agency
USEPA:
SPECIFICATIONS
Range pH 6.5 to 8.5 pH
Free Chlorine 0.00 to 5.00 mg/L Total Chlorine 0.00 to 5.00 mg/L Cyanuric Acid 0 to 80 mg/L Iodine 0.0 to 12.5 mg/L Bromine 0.00 to 10.00 mg/L Iron LR 0.00 to 1.60 mg/L
Resolution 0.1 pH
0.01 mg/L under 3.50 mg/L Chlorine
0.10 mg/L above 3.50 mg/L Chlorine 1 mg/L Cyanuric Acid
0.1 mg/L Iodine
0.01 mg/L Bromine
0.01 mg/L Iron LR
Accuracy pH ±0.1 pH @ 25°C
Free Chlorine ±0.03 ±3% of reading @ 25°C Total Chlorine ±0.03 ±3% of reading @ 25°C Cyanuric Acid ±1 mg/L ±15% of reading @ 25°C Iodine ±0.1 mg/L ±5% of reading @ 25°C Bromine ±0.08 mg/L ±3% of reading @ 25°C Iron LR ±0.01 mg/L ±8% of reading @ 25°C
Typical EMC Deviation ±0.1 pH
±0.01 mg/L Bromine, Chlorine ±1 mg/L Cyanuric Acid ±0.1 mg/L Iodine ±0.02 mg/L Iron LR
5
Light Source Tungsten lamp Light Detector Silicon Photocell with narrow band interference filter @ 525 nm Methods For pH: Phenol red method. The reaction with reagents causes a red
tint in the sample. For Chlorine: Adaptation of the USEPA method and Standard Method
4500-Cl G. The reaction with reagents causes a pink tint in the sample.
For Cyanuric Acid: Adaptation of the turbidimetric method. The reaction between cyanuric acid and the reagent causes a white suspension in the sample.
For Iodine: Adaptation of the EPA, DPD method. The reaction between iodine and the reagent causes a pink tint in the sample.
For Bromine: Adaptation of the EPA, DPD method. The reaction between bromine and the reagent causes a pink tint in the sample.
For Iron LR: Adaptation of the TPTZ method. The reaction between iron and the reagent causes a violet 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
after 1 hour of non-use in with last reading reminder.
Dimensions 192 x 104 x 69 mm (7.6 x 4.1 x 2.7") Weight 360 g (12.7 oz.).
measurement mode
calibration mode
;
;
REQUIRED REAGENTS
Code Parameter Description Quantity/test
HI 93710-0 pH Phenol red 5 drops HI 93701-0 Free Chlorine DPD Powder Reagent 1 packet HI 93711-0 Total Chlorine DPD Powder Reagent 1 packet HI 93722-0 Cyanuric Acid Powder Reagent 1 packet HI 93718-0 Iodine DPD Powder Reagent 1 packet HI 93716-0 Bromine DPD Powder Reagent 1 packet HI 93746-0 Iron LR Powder Reagent 2 packet
6
PRECISION AND ACCURACY
Precision is how closely repeated measurements agree with each other. Precision is usually expressed as standard deviation (SD).
Accuracy is defined as the nearness of a test result to the true value.
Although good precision suggests good accuracy, precise results can be inaccurate. The figure explains these definitions.
In a laboratory using a standard solution of the parameter and a representative lot of reagent (for each parameter) the following standard deviations were obtained:
Parameter Standard Solution Standard Deviation
pH 7.0 pH 0.1 pH units Free Chlorine 1.00 mg/L 0.03 mg/L Total Chlorine 1.00 mg/L 0.03 mg/L Cyanuric Acid 20 mg/L 1 mg/L Iodine 2.5 mg/L 0.1 mg/L Bromine 2.00 mg/L 0.08 mg/L Iron LR 0.80 mg/L 0.01 mg/L
7
PRINCIPLE OF OPERATION
Absorption of Light is a typical phenomenon of interaction between electromagnetic radiation and matter. When a light beam crosses a substance, some of the radiation may be absorbed by atoms, molecules or crystal lattices.
If pure absorption occurs, the fraction of light absorbed depends both on the optical path length through the matter and on the physical-chemical characteristics of the substance according to the Lambert-Beer Law:
-log I/Io = ελ c d
or
A = ελ c d
Where:
-log I/I
Therefore, the concentration "c" can be calculated from the absorbance of the substance as the other factors are known.
Photometric chemical analysis is based on the possibility to develop an absorbing compound from a specific chemical reaction between sample and reagents. Given that the absorption of a compound strictly depends on the wavelength of the incident light beam, a narrow spectral bandwidth should be selected as well as a proper central wavelength to optimize measurements.
The optical system of Hanna's HI 96 series colorimeters is based on special subminiature tungsten lamps and narrow-band interference filters to guarantee both high performance and reliable results.
= Absorbance (A)
o
Io= intensity of incident light beam I = intensity of light beam after absorption
ελ= molar extinction coefficient at wavelength λ
c = molar concentration of the substance d = optical path through the substance
HI 96 block diagram (optical layout)
A microprocessor controlled special tungsten lamp emits radiation which is first optically conditioned and beamed to the sample contained in the cuvette. The optical path is fixed by the diameter of the cuvette. Then the light is spectrally filtered to a narrow spectral bandwidth, to obtain a light beam of intensity Io or I.
8
The photoelectric cell collects the radiation I that is not absorbed by the sample and converts it into an electric current, producing a potential in the mV range.
The microprocessor uses this potential to convert the incoming value into the desired measuring unit and to display it on the LCD.
The measurement process is carried out in two phases: first the meter is zeroed and then the actual measurement is performed.
The cuvette has a very important role because it is an optical element and thus requires particular attention. It is important that both, the measurement and the calibration (zeroing) cuvettes, are optically identical to provide the same measurement conditions. Whenever possible use the same cuvette for both. It is necessary that the surface of the cuvette is clean and not scratched. This to avoid measurement interference due to unwanted reflection and absorption of light. It is recommended not to touch the cuvette walls with hands.
Furthermore, in order to maintain the same conditions during the zeroing and the measuring phases, it is necessary to close the cuvette to prevent any contamination.
9
FUNCTIONAL DESCRIPTION
INSTRUMENT DESCRIPTION
1) RANGE/GLP/ key
2) CAL CHECK key
3) ZERO/CFM key
4) READ/ /TIMER key
5) ON/OFF key
6) Liquid Crystal Display (LCD)
7) Cuvette alignment indicator
8) Cuvette holder
KEYPAD DESCRIPTION
• ON/OFF: to turn the meter on and off.
• ZERO/CFM: this is a bi-functional key. Just press to zero the meter prior to measurement, or confirm edited values. In
• READ/ /TIMER: this is a multi-functional key. In measurement, or press and hold for three seconds to start a pre-programmed countdown prior to measurement. In
• CAL CHECK: this is a bi-functional key. Just press to perform the validation of the meter, or press and hold for three seconds to enter
• RANGE/GLP/ : this is a multi-functional key. In parameter. Press and hold for three seconds to enter edit the date and time.
GLP mode
calibration mode
press to confirm factory calibration restore.
measurement mode
press to view the next screen.
calibration mode
measurement mode
GLP mode
.
. In
, press to make a
, press to change the
calibration mode
press to
OPERATING MODES
•
Measurement mode:
•
Calibration mode:
“CAL” tag appears), it enables calibration of the instrument.
•
GLP mode
consulting of user calibration date or restore factory calibration.
default operation mode, enables both validation and measurement.
may be entered by keeping CAL CHECK pressed for three seconds (the
may be entered by pressing RANGE/GLP/ (“GLP” appears), it enables
10
DISPLAY ELEMENTS DESCRIPTION
1) The measuring scheme (lamp, cuvette, detector), appears during different phases of zero or reading measurement
2) Error messages and warnings
3) The battery icon indicates the charge state of the battery
4) The hourglass appears when an internal check is in progress
5) Status messages
6) The chronometer appears when the reaction timer is running
7) The month, day and date icons appear when a date is displayed
8) Four digit main display
9) Measuring units
10) Four digit secondary display
11
Loading...
+ 25 hidden pages
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use