Instruction Manual HI 93114 Turbidity & Chlorine Measurements www.hannainst.
Dear Customer, Thank you for choosing a HANNA instruments® 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, as well as a precise idea of its versatility. For any additional technical information, do not hesitate to e-mail us at tech@hannainst.com. This instrument is in compliance with the directives. TABLE OF CONTENTS Preliminary Examination .............................
GENERAL DESCRIPTION With the hand held HI 93114, three important parameters in water quality analysis are at your fingertips. Free and total chlorine measurements and US EPA compliant turbidity measurements are performed quickly and reliably with this lab-grade microprocessor-based field instrument. HI 93114 is particularly useful for potable water measurements and municipalities.
Colorimetric Mode PRINCIPLE OF OPERATION Turbidity Mode HI 93114 has been designed to perform measurements according to the USEPA’s 180.1 method and the Standard Method 2130B. The instrument functions by passing a beam of light through a vial containing the sample being measured. The light source is a Pure Green LED to ensure that any interference caused by a colored samples is minimized.
A substance absorbs a color complimentary to the color it emits. For example, a substance appears yellow because it absorbs blue light. As a result, the Hanna meters use LED’s with specific wavelengths to measure samples. FUNCTIONAL DESCRIPTION The optical distance (d) is measured by the internal diameter of the cuvet containing the sample. The photoelectric cell collects the radiation I that is not absorbed by the sample and converts it into an electric current.
2) Secondary LCD: The three-digit lower level shows the current measurement mode (“F CL”, “t CL”, or “tr”), and diagnostic or calibration modes, such as “d 11”, “2 Fn”, “5 c1”. 3) DATE: Indicates that the main LCD is showing the current date, the date of last calibration or the date of logged measurement in memory. 4) TIME: Indicates that the main LCD is showing the current time, the time of last calibration or the time of logged measurement in memory.
In calibration and diagnostic modes, decreases the blinking digit by one. If pressed together with ALT while the meter is in logging mode, the upper LCD will show the current lot number. OPERATIONAL GUIDE SET CURRENT TIME/DATE To set or change the current time, turn on the meter. After initialization routine, the LCD will show: SPECIFICATIONS HI 93114 Range Turbidity Free Cl 2 Total Cl2 0.00 to 50.0 NTU* 0.00 to 2.50 mg/L 0.00 to 3.50 mg/L Resolution Turbidity Free Cl 2 Total Cl2 0.01 and 0.1 NTU* 0.
CURRENT TIME/DATE RECALL To recall current TIME/DATE press and hold the ALT and READ keys together. The current time and an intermittent “TIME” will be displayed. Press READ. The meter will intermittently display “SIP” on the upper level of the LCD. After a few seconds the display will show the turbidity value, e.g. 5.34 NTU: + Release the keys. Press and hold the ALT and READ keys again and the meter will show the current date together with an intermittent “DATE”.
The meter will show “SIP” for a few seconds and then a zero indication: For the Free or Total Chlorine add the content of its respective packet: 1 x Replace the cap and shake the cuvet. For best results wait 2½ mins. for Total Chlorine. Insert the reacted sample into the cuvet holder and ensure that the notch on the cap is positioned securely into the groove. Press READ.
Insert the reacted sample into the cuvet holder and make sure that the notch on the cap is positioned securely into the groove. Press READ. The meter will first show “SIP” for a few seconds and afterwards the sample concentration: CALIBRATION TURBIDITY CALIBRATION The meter should be properly calibrated with a standard prepared as described in USEPA method 180.1. Span calibration To calibrate the span of the meter, fill the cuvet with the primary turbidity formazine standard of 50 NTU.
The display will blink “-Lt-” for several seconds, indicating that the LED is being adjusted for the turbidimetric channel. Afterwards, a sequence of numbers between -511 to 512 will appear on the upper part of the LCD indicating different levels of LED light intensity. In approximately one minute, the adjustment will be made and the calibration data stored in the non-volatile memory. The display will show four dashes again indicating the end of the span calibration procedure.
After the second calibration point is memorized, the unit will store the calibration data together with time and date in the EEPROM while intermittently indicating “CAL” and “Stor” for several seconds. Subsequently, the upper display will show “----”, indicating that the meter is calibrated and ready to measure turbidity of an unknown sample. By pressing CAL during calibration, user can quit the calibration mode at any time without changing the previously stored calibration data.
Using the and keys, set the lower part of the LCD to “d 11” and then press the key. The key is used as a toggle function in this mode and allows the user to select between USER (USR) or FACTORY (FCT) programmed functions. After entering the calibration mode, the display will show the first point of the previous calibration with the most significant digit blinking. Using the , and keys, choose the concentration of the first calibration standard.
DIAGNOSTIC MODE Subsequently, the upper display will show “----”, indicating that the meter is calibrated and ready to measure the concentration of an unknown sample. By pressing the CAL key during calibration, the calibration mode can be exited at any time without changing the previously stored calibration data. HI 93114 facilitates operations by providing a diagnostic mode. In this mode, user can set or verify different parameters necessary to ensure optimum performance of the meter.
To quit diagnostic mode, press the ALT and CAL keys together again. + of the display to remind the user that every time a measurement is taken, the value is stored in the next available lot number. REVIEWING THE LOGGED BUFFER LOGGING HI 93114 allows user to log 25 time/day-tagged measurements. User can easily turn the logging mode on and off, review the logged memory, review the current lot number and clean the buffer (memory). HI 93114 also reminds the user if its memory is full.
To clear the buffer, press ALT and CAL. Select mode 40. Press the key. The display will show the “Cln” message, indicating that memory is being cleaned. The meter will store new settings in its nonvolatile memory and the display will flash “CAL” and “Stor” alternately for several seconds. The lot number will be reset to 00 automatically. BATTERY REPLACEMENT + REVIEWING THE CURRENT LOT NUMBER To check the current (vacant) lot number, while in log mode, topress ALT and gether.
DIAGNOSTIC CODES LOBAT Weak batteries: change all batteries as soon as possible. -BA- Exhausted batteries: change all batteries immediately. -LO- Low light level is received during the zeroing procedure: check the cuvet for scratches and ensure that the sample is not excessively turbid. Repeat the reading. If the problem persists, recalibrate the meter using deionized water in the diagnostic mode “31” (see “Calibration”).
WARRANTY CE DECLARATION OF CONFORMITY Hanna Instruments meters are guaranteed 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 the instrument was purchased.
SALES & TECHNICAL SERVICE 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.
