Instruction Manual HI 98230 • HI 98240 Printing and Logging pH Meters with GLP and Smart Electrodes w w w . h a n n a i n s t .
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 all the necessary information for the correct use of the instruments. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com. These instruments are in compliance with the directives. TABLE OF CONTENTS PRELIMINARY EXAMINATION ....................................................................
The meters provide a controlled access to calibration and GLP settings through a password protection method. To prolong battery life, the backlight and printing features are disabled when the batteries are getting low, and the "LOBAT" indication is displayed to warn the user of this condition. However, the meter continues to measure correctly even when the low battery indication is displayed.
SPECIFICATIONS INITIAL PREPARATION -4.00 to 19.99 pH ±400.0 mV / ±2000 mV autoranging (HI 98240 only) -10.0 to 120.0°C / 14.0 to 248.0°F Resolution 0.01 pH 0.1 mV (±400 mV) / 1 mV (outside) (HI 98240 only) 0.1°C / 0.1°F Accuracy (@20°C/68°F) ±0.01 pH ±0.5 mV (±400 mV) / ±2 mV (outside) (HI 98240 only) ±0.5 °C (0 to 70°C) / ±1°C (outside) ±1°F (32 to 158°F) / ±1.8°F (outside) Typical EMC Deviation ±0.03 pH ±1 mV (±400 mV) / ±2 mV (outside) (HI 98240 only) ±0.8°C / ±1.
SETUP MODE Setup can be used to view data regarding instrument status (e.g. battery charge) or GLP data (e.g. calibration date) or to view or print the logged data. It also allows the user to change the meter parameters (e.g. time) and to have access to stored data. PASSWORD PROTECTION Setting of the GLP parameters (calibration alarm time-out, instrument ID code, time and date) can be password protected.
Code Valid values Default 10 Show pH GLP data 11 Show ORP GLP data (HI 98240 only) 12 Print GLP data 13 Calibration alarm time-out 00 to 99 days 00 00 means option disabled 14 Instrument ID code 0000 to 9999 0000 1 30 Current time hh:mm 00:00 31 Current day1 dd 01 32 Current month1 MM 01 1 33 Current year YYYY 1998 40 Auto-Off/Power down time-out 5,10,15,30,45,60 5 41 Battery level test 50 RS232 baud rate 1200, 2400, 4800 4800 60 Firmware version 70 Celsius/Fahrenheit selection °C or °F °C 2 99 Password 000
printed at that moment. If printout is stopped the LCD will show the last printed sample number. It is then possible to select another sample. • Press the ALT and FNC keys to return to setup mode. Viewing Logged Data • Press RANGE to view data of the selected sample. Data will be displayed in the following order: pH or mV (mV reading available in HI98240 only) temperature date time • If RANGE is pressed when the time is displayed, the LCD will pass to the next Sample number.
b c d e f g - last pH calibration date - last pH calibration time - pH electrode offset - pH electrode slope - 1st point pH calibration buffer - 2nd point pH calibration buffer (if present) h - last mV calibration date (HI98240 only) i - last mV calibration time (HI98240 only) l - 1st point mV calibration (HI98240 only) m - 2nd point mV calibration (HI98240 only) n - 3rd point mV calibration (if present; HI98240 only).
TAKING ORP MEASUREMENTS pH CALIBRATION PROCEDURE (HI 98240 ONLY) Connect the ORP electrode to the meter and press ON/OFF to power on the instrument. The meter automatically sets the mV range. If the ORP electrode is not connected, the LCD will display the "no probe" message and then dashed lines in place of the readings. To take ORP measurements, simply submerge the bottom 4 cm (1½") of the ORP electrode in the solution to be tested, stir gently and allow for the reading to stabilize.
6. If password is correct or not set, the meter will display "7.01pH" on the upper LCD and "b1" on its lower part; if wrong, it will return to measurement mode without any message. 7. Select the first buffer solution value with 8. When the "S" symbol blinks in the lower LCD, the reading is stable and calibration can be confirmed. and if necessary. Note: It is possible to display temperature pressing the RANGE key. 9. Press ALT and CFM to confirm the first buffer. 16.
mV CALIBRATION PROCEDURE (HI 98240 ONLY) A 4 point calibration must be performed. The first two calibration points are 0 and 350 mV for low range calibration; the other two points are 0 and 350 or 1900 mV for high range calibration. 1. Connect a mV simulator (HI 8427 or HI 931001 with the proper connection cable) to the meter and set it to 0 mV. 2. Press ALT and CAL when LCD is displaying mV. 3. User is prompted to enter password if it has been set to a value different from 0000, otherwise skip to step 6.
PRINTING / LOGGING FUNCTION Two different modes to print / log data are available: 1. Timed logging; samples are stored and printed (if print function is active) at fixed time intervals. Data are stored in the lots 01 to 16. 2. Log on demand; samples are stored and printed (if print function is active) when the LOG key is pressed. Data are stored in the lot 00. It's possible to perform the Log on demand either in normal mode or in Timed logging mode.
"Stor log" and the value will be stored in the lot 00 (log on demand data area). If the printing function is enabled, a printout is also produced providing the following information: a - Date b - Sample number c - Time d - Readings Note: When the Log on demand data area is full and the LOG key is pressed, the sample will not be stored and the LCD will display "FULL". In this case it is necessary to delete the Log on demand data to proceed.
The meter checks if the time-out time has expired every time it is turned on. In the case the time has run out, the message "Cal date" scrolls across the LCD. The "DATE" symbol will blink as a reminder. Alarm time-out is also signaled in the GLP data printout through the "Dt" symbol after the calibration date. GLP AND RS232 All the GLP data can be retrieved from a PC through the RS232 communication feature.
MEMORY ORGANIZATION Logged data are stored in the internal EEPROM and are retained even if batteries and external power are disconnected. MEMORY CAPACITY • 1500 data samples which are divided into 16 lots (lots 01 to 16) • 100 data samples for the Log on demand (lot 00). TIMED LOG (lots 01 to 16) Each time a new logging period starts, it automatically starts from the next available lot. If the last lot was the 16th, the new logging period restarts from lot 01 overwriting previously logged data.
BATTERY REPLACEMENT When the batteries are inserted and no power adapter is connected, the meter can recognize different batteries charge levels. 1. Fully charged batteries. The backlight and printer can be enabled. 2. Weakening batteries. "LOBAT" symbol blinks on LCD. The backlight and printer are automatically disabled and it is not possible to enable them until new batteries are inserted or an external power adapter is connected. 3. Weak batteries. "LOBAT" symbol stays still on lower LCD.
ELECTRODE CONDITIONING AND MAINTENANCE Note: To prevent damage to the electrode, remove it from the sample before turning the meter off. With the meter OFF, detach the electrode from the instrument and immerse it in the storage solution. PREPARATION Remove the protective cap. DO NOT BE ALARMED IF SALT DEPOSITS ARE PRESENT. This is normal with pH electrodes and they will disappear when rinsed with water. During transport tiny bubbles of air may form inside the glass bulb.
• Dry Membrane/Junction: soak in HI 70300 storage solution for at least 1 hour. • Drifting: Soak the electrode tip in warm HI 7082 solution for one hour, then flush the tip with distilled water. Refill with fresh HI 7071 for single junction electrodes, or HI 7082 for double junction electrodes. • Low Slope: refer to the cleaning procedure above. • No Slope: check the electrode for cracks in glass stem or bulb and replace the electrode.
ELECTRODES HI 1615D HI 1616D HI 1617D HI 1618D HI 3619D HI 3620D Smart pH electrode, glass body, single junction, refillable, with built-in temperature sensor, DIN connector and 1 m (3.3') cable Smart pH electrode, glass body, single junction, gelfilled, with built-in temperature sensor, DIN connector and 1 m (3.3') cable Smart pH electrode, glass body, single junction, triple ceramic, refillable, with built-in temperature sensor, DIN connector and 1 m (3.
WARRANTY CE DECLARATION OF CONFORMITY 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. The electrodes and the probes are warranted for a period of six months. This warranty is limited to repair or replacement free of charge. Damages due to accident, misuse, tampering or lack of prescribed maintenance are not covered.
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.
