advertisement
SALES AND TECHNICAL SERVICE CONTACTS
Australia:
Tel. (03) 9769.0666 • Fax (03) 9769.0699
China:
Tel. (10) 88570068 • Fax (10) 88570060
Egypt:
Tel. & Fax (02) 2758.683
Germany:
Tel. (07851) 9129-0 • Fax (07851) 9129-99
Greece:
Tel. (210) 823.5192 • Fax (210) 884.0210
Indonesia:
Tel. (21) 4584.2941 • Fax (21) 4584.2942
Japan:
Tel. (03) 3258.9565 • Fax (03) 3258.9567
Korea:
Tel. (02) 2278.5147 • Fax (02) 2264.1729
Malaysia:
Tel. (603) 5638.9940 • Fax (603) 5638.9829
Singapore:
Tel. 6296.7118 • Fax 6291.6906
South Africa:
Tel. (011) 615.6076 • Fax (011) 615.8582
Taiwan:
Tel. 886.2.2739.3014 • Fax 886.2.2739.2983
Thailand:
Tel. 66.2619.0708 • Fax 66.2619.0061
United Kingdom:
Tel. (01525) 850.855 • Fax (01525) 853.668
USA:
Tel. (401) 765.7500 • Fax (401) 765.7575
For e-mail contacts and complete list of Sales and
Technical offices, please see www.hannainst.com
Instruction Manual
HI 93703-11
Portable Logging
Turbidity Meter with RS232
LOG
188
LOBA
T
%
LOGGIN
TURBID
G
GLP
ITY MET
CLR
ON
OFF
CAL
VIEW
STO
DATE
ALT
READ
w w w . h a n n a i n s t . c o m
Dear Customer,
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 the correct use of the instrument.
If you need additional technical information, do not hesitate to e-mail us at
This instrument is in compliance with the directives.
TABLE OF CONTENTS
Preliminary Examination ............................ 3
General Description .................................... 3
Principle of Operation ................................. 5
Functional Description ................................ 6
Specifications ............................................ 7
Operational Guide ...................................... 8
Measurement Procedure ....................... 8
Log-on-demand ................................... 11
Cleaning Logged Data ......................... 11
Viewing Logged Data .......................... 12
Viewing and setting Date and Time ..... 12
Error Codes ......................................... 13
Ensure Accurate Measurements ............. 14
Sources of Interference ....................... 15
Calibration ................................................ 16
Calibration Procedure .......................... 16
Viewing Calibration Date ..................... 18
Ensure Accurate Calibration ................ 18
Standard Suspension .......................... 19
Battery Replacement ............................... 20
PC Connection ......................................... 21
Accessories ............................................. 22
Warranty .................................................. 23
2
WARRANTY
All Hanna Instruments meters 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 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. First obtain a Returned Goods Authorization number from the Customer Service department, then return the instrument with the
Authorization # included along with shipment costs prepaid. If the repair is not covered by the warranty, you will be notified of the charges.
When shipping any instrument, make sure it is properly packaged for complete protection.
All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner.
Recommendations for Users
Before using this product, make sure that it is entirely suitable for the environment in which it is used.
Operation of this instrument 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 instrument's EMC performance.
To avoid electrical shock, do not use this instrument when voltages at the measurement surface exceed 24 Vac or 60 Vdc.
To avoid damages or burns, do not perform any measurement in microwave ovens.
23
ACCESSORIES
HI 731318
HI 731321
HI 731313
HI 93703-0
Tissue for wiping cuvets (4 pcs)
Spare glass cuvet (4 pcs)
Maintenance kit: rugged carrying case including HI
93703-0 and HI 93703-10 calibration solutions, HI 93703-
50 cuvet cleaning solution, 1 tissue for wiping cuvets and 2 cuvets
AMCO-AEPA-1 @0 FTU* calibration solution, 30 mL
HI 93703-05
AMCO-AEPA-1 @500 FTU* calibration solution, 30 mL
HI 93703-10
AMCO-AEPA-1 @10 FTU* calibration solution, 30 mL
HI 93703-50
Cuvet cleaning solution, 230 mL
HI 92000
HI 920011
Windows ® compatible software
Serial cable for PC connection
(5 to 9-pin)
22
* 1 FTU = 1 NTU
PRELIMINARY EXAMINATION
Remove the instrument from the packing material and examine it to make sure that no damage has occurred during shipping. If there is any damage, notify your Dealer.
HI 93703-11 is supplied complete with:
• Glass cuvet with cap
• Batteries (4 x 1.5V AA)
• Instruction manual
Note: Save all packing material until you are sure that the instrument functions correctly. Any defective item must be returned in its original packaging with the supplied accessories.
GENERAL DESCRIPTION
With HI 93703-11 turbidity measurements can be performed with high precision in the field as well as in the laboratory. HI 93703-11 turbidity meter is a microprocessor-based instrument used to determine the turbidity of water and waste-water. The meter covers a 0-1000 FTU range in two scales: 0.00 to 50.00 FTU and 50 to 1000 FTU. The autoranging feature of the instrument sets the appropriate range for the measurement.
HI 93703-11 also includes a real-time clock and log-on-demand capability. The PC communication is made through a serial port of your computer and the 5-pin socket on the meter.
Note: HI 93703-11 has been designed according to the ISO 7027 International
Standard, consequently the turbidity measurement units are expressed in
FTU (Formazine Turbidity Unit). FTU is identical to the other internationally recognized unit: NTU (Nephelometric
Turbidity Unit).
3
The meter is housed in a rugged and lightweight case, with an easy-to-read LCD.
To save battery-life, the instrument is equipped with an automatic shut-off feature which is activated after 5-minutes of non-use. This feature is disabled when the meter is connected to the serial port of the computer.
All operations can be carried out with only five keys and troubleshooting functions can be performed with displayed error code guides.
A positive-locking system guarantees that the cuvet is firmly placed in the cell.
The keypad is water-resistant and can be wiped with a moist cloth for quick cleanups.
Two or three point calibration (0,10, 500 FTU*) can be easily performed using available standards, and the last calibration date is automatically stored for future retrivial.
We have chosen 10 FTU * as the standard calibration point because it best fits the water turbidity measurements in different applications, from drinking water to wastewater treatment.
HANNA instruments
®
uses the primary standard AMCO-AEPA-1 to avoid all formazinerelated problems. Formazine is a toxic, unstable substance, which requires particular care: its standards have to be prepared only a few minutes before performing the calibration, and cannot be reused because of their short life.
HANNA instruments
®
standards are extremely stable, can be reused, and last up to six months, if free from contamination.
HI 93703-11 can be used with both standards.
* 1 FTU = 1 NTU
4
Battery replacement must only take place in a safe area and using 1.5V AA alkaline batteries.
To install or replace the batteries, turn the unit off and remove the battery compartment cover on the raer of the meter.
1.5V
1.5V
-
+
+
1.5V
1.5V
-
+
-
+
SCREW
POTS
Insert the new batteries while paying attention to the polarity.
After the batteries have been installed, close the battery cover and make sure the gasket is in place before tightening the 2 screws, to ensure a watertight seal.
PC CONNECTION
To communicate with the instrument through the HI 92000 software, use the HI 920011 cable
(optional) to connect a serial port of your computer to the 5 pin connector of the meter.
When connected the meter will maintain full functionality, being able to perform a data transfer while the meter is being operated.
Notes:
• Serial communication is not allowed when the meter is being calibrated.
• The auto shut-off feature is also disabled when the meter is connected to a computer.
21
BATTERY REPLACEMENT
All components have been selected to minimize current drain without compromising functionality. In order to minimize the battery consumption, the meter is equipped with an autoshut off function which switches the meter off after 5 minutes of non-use.
The four 1.5V batteries guarantee 60 hours of working life (or 900 measurements).
In order to obtain accurate measurements, the battery level is monitored every time the meter is switched on.
LOBAT
In addition, a "LO BAT" indication will appear on the lower right corner of the display when the batteries are weak (<10%). All four batteries need to be replaced.
0
%
LO BAT
When the batteries are too weak to ensure reliable measurements, the message 0% LO
BAT appears for a few seconds, and then the meter will automatically switch itself off. Replace the batteries immediately.
20
PRINCIPLE OF OPERATION
HI 93703-11 has been designed to perform measurements according to the ISO 7027 International Standard.
The instrument functions by passing a beam of infrared light through a vial containing the sample being measured.
LIGHT
DETECTOR
IR LED
90° SCATTERED
LIGHT
EMITTED LIGHT (890 nm)
CUVET
A sensor, positioned at 90° with respect to the direction of light, detects the amount of light scattered by the undissolved particles present in the sample. The microprocessor converts such readings into FTU* values.
As noted above, FTU unit is equal to the NTU unit. However, there are other known measurement units for turbidity: Jackson Turbidity Unit
(JTU) based on the old method of Jackson's candle, and Silica Unit (mg / L of SiO
2
). For your reference the conversion table between these measurement units is shown below:
JTU
FTU /NTU
SiO
2
(mg / L)
JTU
1
0.053
0.4
FTU/NTU SiO
2
(mg / L)
19 2.5
1
7.5
0.13
1
5
* 1 FTU = 1 NTU
8
FUNCTIONAL DESCRIPTION
1
2
3
4
LOG
HI 93703-11
188
DATE %
TIME
LOBAT
ON
OFF
LOGGING
MICROPROCESSOR
TURBIDITY METER
5
6
7
1) Measurement cell
2) LCD (Liquid Crystal Display)
3) ON/OFF/CLR key, to turn the meter ON and OFF, and to clear log memory
4) GLP/CAL key, to display last calibration date & time, and to enter calibration mode
5) STO/VIEW key, to store sample after reading, and to view log memory
6) READ/DATE key, to perform measurements, and to display (toggle) current date/time
7) ALT key, to activate the second functions
(second function keys in orange)
8) RS232 connector (5 pin)
6
• All glassware that comes into contact with standards should be maintained clean. Wash with the HI 93703-50 cleaning solution and rinse with HI 93703-0 or turbidity free water.
• Rinse the vial twice with 5 ml of the liquid to be tested. This removes the effect of any previous liquid and any dust or foreign objects that may be present inside. Gently pour the liquid down the side of the vial to reduce air bubbles (no mixing is required when HI
93703-0 and HI 93703-10 AMCO-AEPA-1 standards are used).
• Before inserting the vial into the instrument, wipe it with HI 93703-70 or a soft, lint-free tissue. Handle vials so that no fingerprints can get on the areas where light passes
(approx. bottom 2 cm/1") .
STANDARD SUSPENSION
Presently, there are only two recognized primary standards: AMCO-AEPA-1 and formazine.
Hanna supplies HI 93703-11 with the AMCO-
AEPA-1 which has a much longer shelf life at all concentrations (approx. six months, if free from contamination). In addition, no special handling or disposal is required and a much higher stability of suspended particles has been observed.
On the other hand, formazine is a toxic substance, generated by a known carcinogen, with poor stability (particles flocculate and settle quickly). Lower concentrations change value within a few days or hours after dilution.
The consistency of HI 93703-11 readings by using both standards has been separately established by Advanced Polymer Systems and
Hanna Instruments.
Additional documentation about the formazine standard and more complex calibration procedures is available upon request.
* 1 FTU = 1 NTU
19
• After approximately
30 seconds the LCD will display "----".
Now the instrument i s c a l i b r a t e d a n d ready for use.
NOTE: If "ERR1" is displayed, the calibration data is maintained.
VIEWING CALIBRATION DATE
HI 93703-11
To display the last calibration time and date, press the GLP button to toggle through the date and time. If the display shows "FS", the instrument has factory calibration settings loaded and no date will be displayed.
ON
OFF
LOGGING
MICROPROCESSOR
TURBIDITY METER
FS
VIEWING FIRMWARE VERSION
To display the firmware version press and hold the ON/OFF key for
HI 93703-11 approx. ten seconds
(when turning the meter on).
ON
OFF
LOGGING
MICROPROCESSOR
TURBIDITY METER
The firmware version will be displayed
V1.0
ENSURE ACCURATE CALIBRATION
The procedure below should be carefully followed during testing and calibration:
18
SPECIFICATIONS
Range
0.00 to 50.00 FTU *
50 to 1000 FTU *
0.01 and 1 FTU *
Resolution
Accuracy
±0.5 FTU* or
±5% of reading (whichever is greater)
Typical EMC Deviation
Calibration
±2% FS
3 point (0, 10 and 500 FTU*)
Light Source
Infrared LED
Light Source Life
Light Detector
Life of the instrument
Silicon photocell
Data Logging
199 measurements, on-demand
PC Connection
Through serial port, using HI 920011 connection cable and
HI 92000 Windows
®
compatible software
Battery Type
Battery Life
Approx. 60 hours of continuous use or 900 measurements
Auto-off
Environment
4 x 1.5V AA alkaline batteries
After 5 minutes of non-use
0 to 50 ° C (32 to 122 ° F);
RH max 95% non-condensing
Dimensions
Weight
220 x 82 x 66 mm
(8.7 x 3.2 x 2.6")
510 g (1.1 lb.)
7
* 1 FTU = 1 NTU
OPERATIONAL GUIDE
To prepare the instrument for taking measurements, first install the batteries (see
Battery Replacement section on page 20) and then turn the instrument on.
To maximize battery-life, the display is automatically switched off after 5-minutes of non-use. To reactivate the display, simply press the ON/OFF key.
MEASUREMENT PROCEDURE:
HI 93703-11
• Turn the meter on by pressing the ON/OFF key.
ON
OFF
LOGGING
MICROPROCESSOR
TURBIDITY METER
• The meter will carry out a self-test displaying a full set of figures.
LOG
188
DATE %
TIME
LOBAT
• The meter will carry out a battery test showing in percentage the battery life left.
98 ba
%
• When the LCD displays “----” the meter is ready to measure.
• Fill a clean cuvet up to one quarter inch (0.5 cm) from its rim with the thoroughly agitated sample.
• Allow sufficient time for bubbles to escape before securing the cap.
Note: do not overtighten the cap.
1/4“ 0.5
8
• If "ERR1" appearson the LCD, please check the standard solution.
err1
• After approximately 30 seconds the meter will display 10.00, prompting the user to place the 10.00 FTU standard solution in the cuvet holder.
10.00
• Place the 10.00 FTU standard in the holder press CAL, SIP and
CL will start blinking cl sip
• After approximately
30 seconds the meter cl will display 500, asking the user to place the 500 FTU buffer solution in the cuvet holder.
500 cl
NOTE: At this point the user can save the two point calibration setup by pressing ALT & CAL buttons, leaving the calibration mode.
To perform a three point calibration, place the 500
FTU standard solution in the cuvet holder.
• Press CAL, SIP and
CL will start blinking sip cl
17
CALIBRATION
To check the date of last calibration, simply press the GLP/CAL key. Press again to toggle between date and time.
To make sure that the meter is calibrated, take a measure of a standard solution.
The instrument can be calibrated at two or three points and a monthly calibration is recommended.
CALIBRATION PROCEDURE
• Turn the meter on and wait for the display to show "----".
• Press the ALT & CAL buttons together. The
"CAL" message will blink on the display 3 times. The meter then enters the calibration mode, displaying "0.00
cl" and prompting the user to insert the 0.00
FTU standard.
HI 93703-11
ON
OFF
LOGGING
MICROPROCESSOR
TURBIDITY METER
0.00
cl
• Place the 0.00 FTU standard in the cuvet holder
• Press CAL, SIP and
CL will start blinking
16 sip cl
NOTE: Wipe the cuvet thoroughly with a lintfree tissue (HI 93703-70) before inserting into the measurement cell.
The cuvet must be completely free of fingerprints and other oil or dirt, particularly in the area where the light goes through (approx. the bottom
2 cm/1").
• Place the cuvet into the cell and check that the notch on the cap is positioned sec u r e l y i n t o t h e groove.
• The mark on the cuvet cap should point towards the
LCD.
• Press the READ key and the LCD will display a blinking “SIP”
(Sampling in Process). The turbidity value will appear after approx. 20 seconds.
HI 93703-11
ON
OFF
LOGGING
MICROPROCESSOR
TURBIDITY METER
51
9
• Even though HI93703-11 covers a very wide range of turbidity values, for very accurate measurements of samples exceeding 40 FTU *, Standard Methods require dilution. In such cases, the correct amount of HI 93703-0 or turbidity-free water to be added to the sample can be calculated as follows:
Vos = 3000 / T
where: Vos = volume of sample (mL) to be combined with HI 93703-0 to obtain the final volume of 100 mL.
T = HI 93703 reading (exceeding
40FTU*)
E.g.: HI 93703 reading = 200 FTU *
3000 / 200 = 15 mL (Vos)
15 mL (Vos)+85 mL (HI 93703-0) = 100 mL
At this point, take a sample of this solution and measure its turbidity.
The correct turbidity value of the original sample will be:
T n
x 100 mL / Vos = T a
where: T n
T a
= new HI 93703 reading
= actual turbidity value of the original sample
E.g. If T n
T a
= 27 FTU *
= 27 FTU *x100 mL / 15 mL = 180 FTU *
NOTE: Any sample taken above 1000 FTU will show out of range by blinking "1000".
* 1 FTU = 1 NTU
10 hours (the sample needs to be kept at room temperature prior to the analysis).
• To obtain a representative sample, gently, but thoroughly, mix it before samples are taken. Do not shake (to prevent air bubbles) and do not let the sample settle.
• It is recommended to calibrate the meter with the supplied HI 93703-10 @10 FTU* standard at least once a month or more frequently for greater accuracy.
• Before inserting vials into the instrument, wipe them with HI 93703-70 or a soft, lintfree tissue. Handle vials so that no fingerprints get on the areas where light passes
(approx. the bottom 2 cm/1 inch).
If you experience any problems in taking measurements, contact your dealer or the nearest
Hanna Customer Service Center.
SOURCES OF INTERFERENCE
• Presence of floating debris and coarse sediments which settle out rapidly will give false readings.
• The infrared light source used for HI 93703-
11 turbidity meter, complies with the ISO
7027 International Standard and can effectively minimize any errors due to colored dissolved substances. This effect, called
"true color", is a common interference for most commercially available instruments operating in the range of visible light.
• Air bubbles and the effect of vibrations that disturb the surface of the sample may give false results and should be avoided.
• Dirty glassware could also affect readings along with scratched or dented vials.
* 1 FTU = 1 NTU
15
• Real Time Clock error
∗ err2
• EEPROM error
∗ err3
• Internal communication error
∗ err4
• Internal Bus error
∗ err5
∗
Contact the HANNA office nearest to you.
ENSURE ACCURATE MEASUREMENTS
• Each time the cuvet is used, tighten the cap to the same degree.
• Discard the sample soon after the reading is taken to avoid permanently clouding the glass.
• All glassware used to contain the standards and the samples should be maintained clean, washed with the HI 93703-50 cleaning solution and rinsed with HI 93703-0 or turbidity-free water.
• Collect the samples in clean glass or plastic bottles, fit stoppers and perform the analysis quickly. If necessary, store the sample in a cool, dark place, for up to a maximum of 24
14
LOG-ON-DEMAND:
• After taking a reading, press the STO button. The last sample read will be
HI 93703-11
ON
OFF
stored in memory.
The display will also
LOGGING
MICROPROCESSOR
TURBIDITY METER show on the bottom right corner the reference number of the stored sample.
NOTE: When the maximum number of samples has been reached
(199), the LCD display will show "FULL".
FULL
This is a warning that you will be overwriting the oldest sample recorded. To store the current sample, press the STO button again and this will overwrite the oldest sample in the memory. All samples are shifted (reference numbers reduced by one). Sample number one remains the oldest sample.
CLEARING LOGGED DATA:
HI 93703-11
• Press the ALT &
CLR buttons together. The display will show "CLR" for confirmation. Press
ALT & CLR again to clear memory. To abort the operation, press any button.
ON
OFF
LOGGING
TURBIDITY METER
CLR
LOG
ALL SAMPLES PREVIOUSLY STORED
WILL BE ERASED FROM MEMORY!
11
VIEWING LOGGED DATA:
• Press the ALT & VIEW buttons together. The last sample will be displayed.
HI 93703-11
ON
OFF
LOGGING
MICROPROCESSOR
TURBIDITY METER
• Press the right arrow to scroll between turbidity value, date and time of the sample.
HI 93703-11
ON
OFF
LOGGING
MICROPROCESSOR
TURBIDITY METER
• Press the UP/DOWN arrows to view the samples and use the right arrow to scroll the date and time .
HI 93703-11
ON
OFF
LOGGING
MICROPROCESSOR
TURBIDITY METER
• Press ALT & VIEW again to exit this mode.
VIEWING AND SETTING DATE AND TIME:
VIEWING:
• Press ALT & DATE to toggle between date and time.
SETTING:
HI 93703-11
ON
OFF
• Press and hold ALT & DATE for 3-4 seconds.
LOGGING
MICROPROCESSOR
TURBIDITY METER
• Press UP/DOWN to correct and set the year.
HI 93703-11
ON
OFF
• Press right arrow to scroll to
LOGGING
MICROPROCESSOR
TURBIDITY METER
12 month and day, use UP/
DOWN to set.
HI 93703-11
ON
OFF
• Press right arrow again to scroll to time, use UP/
DOWN to set.
LOGGING
MICROPROCESSOR
TURBIDITY METER
• Press right arrow again to save and exit date and time setup.
HI 93703-11
ON
OFF
LOGGING
MICROPROCESSOR
TURBIDITY METER
Note: Press ALT & DATE to leave this mode without saving.
ERROR CODES:
Every time the meter is switched on, the Real
Time Clock and EEPROM are tested, and if an error is found the corresponding error code will be displayed.
The list of error codes is as follows:
• NO cover error
(check cuvet position) cap
• Calibration error
(check calibration standard value) err1
13
advertisement
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project