Instruction Manual C 124 Portable Logging Haze Meter w w w . h a n n a i n s t .
Dear Customer, Thank you for choosing a Hanna product. Please read this instruction manual carefully before using the meter. This manual will provide all necessary information for a correct use. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com or contact your nearest technical office. This instrument is in compliance with the directives. TABLE OF CONTENTS Warranty ...................................................................................
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. Damage 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.
PRINCIPLE OF OPERATION C124 has been designed to perform turbidity measurements according to the EBC (European Brewery Convention) Standard. The instrument functions by passing a beam of infrared light through a cuvette containing the sample being measured. The light source is a High Emission Infrared LED with a wavelength peaking at 890 nm, ensuring that the interference caused by colored samples is minimum.
FUNCTIONAL DESCRIPTION 1) 2) 3) 4) 5) 6) 7) 8) RS232 connector Measurement cell Liquid Crystal Display ON/OFF key, to switch the meter ON and OFF; CLR key, to clear log memory (with ALT) GLP key, to display last calibration date and time; CAL key, to enter calibration mode (with ALT) ALT key, to activate alternate functions READ key, to perform measurements; DATE key, to display (toggle) current date and time (with ALT) STO key, to store sample after reading; VIEW key, to view log memory (with ALT) 5
SPECIFICATIONS Range 0 to 10.00 EBC 10 to 250 EBC Resolution Accuracy 0.01 EBC or 1 EBC ±0.20 EBC ±3% of reading (0 to 10 EBC) ±1 EBC ±5% of reading (outside) Typical EMC Deviation ±1% F.S. Light Source IR LED @890 nm Light Source Life Life of the instrument Light Detector Silicon Photocell Power Source 4 x 1.
OPERATIONAL GUIDE The instrument is supplied complete with batteries. Before starting operations, install the batteries while paying attention to their polarity (see also “Battery Replacement” section). To maximize the battery life the meter automatically switches off after 5 minutes of non-use. For reactivating it, simply press the ON/OFF key. TAKING MEASUREMENTS • Turn the meter ON by pressing the ON/OFF key.
• Press the READ key and the LCD will display a blinking “SIP” (Sampling In Progress). The measured value will appear after approximately 25 seconds. SOURCES OF INTERFERENCE • Presence of floating debris and coarse sediment which settle out rapidly will give false readings. • The infrared light source used for C124 Haze meter can effectively minimize errors due to coloured dissolved substances.
VIEWING LOGGED DATA • Press ALT+VIEW keys: the last sample will be displayed. • Press the “right arrow” key to scroll among turbidity value, date and time of the sample. • Press the “up/down arrow” keys to view next sample and use the “right arrow” to scroll the date and time. • Press ALT+VIEW again to exit and return to measurement mode. VIEWING AND SETTING DATE AND TIME VIEWING: • Press ALT+DATE to toggle between date and time. SETTING: • Press and hold ALT+DATE for 3-4 seconds.
CALIBRATION If repeated measurements differ more than an acceptable value, check if the meter calibration status by measuring a standard solution. Anyway, it is recommended to perform a monthly calibration of the meter, or more frequently for greatest accuracy. To check the date of last calibration, simply press the GLP/CAL key. Press again to toggle between date and time. CALIBRATION PROCEDURE • Turn the meter on and wait for the display to show dashes “----”.
• After approximately 30 seconds, the meter will display “125”, asking for the 125 EBC solution to be placed in the cuvette holder. Note: At this point the user can exit the calibration mode and save the two-point calibration by pressing ALT+CAL keys. • To perform a three-point calibration, place a cuvette filled with C124-2 standard solution (@ 125 EBC) in the cuvette holder. • Press the CAL key. “SIP” and “CL” will start blinking. • After approximately 30 seconds, the display will show “----”.
TIPS FOR ACCURATE OPERATION The instructions listed below should be carefully followed during testing and during calibration. • All glassware that comes into contact with standards should be maintained clean. Wash with HI93703-50 cleaning solution and rinse with C124-0 or turbidity free water. • For consistent readings, it is recommended to perform measurement immediately after collecting sample. • To obtain a representative sample, gently mix the liquid before samples are taken.
LCD ERROR CODES Every time the meter is switched on, the RTC (Real Time Clock) and the internal memory (EEPROM) are tested. If an error occurs, the corresponding error code will be displayed. Here below are listed the error codes: • No cover error; check cuvette position • Calibration error; check calibration standard solution • Real Time Clock error (*) • EEPROM error (*) • Internal communication error (*) • Internal Bus error (*) (*) Contact the nearest Hanna Instruments Customer Service Department.
BATTERY REPLACEMENT 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 meter is powered by 4 alkaline batteries (1.5V AA), which are constantly monitored by the meter to ensure reliable readings. A "LO BAT" indication will appear on the display when the batteries become weak and require replacement; the instrument can perform only 50 more measurements.
CE DECLARATION OF CONFORMITY 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.
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.
