Instruction Manual HI 98230 - HI 98240 Portable Microprocessor Printing and Logging pH / ORP Meters http://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 all the necessary information for the correct use of the instrument, as well as a precise idea of its versatility in a wide range of applications. directives. These instruments are in compliance with TABLE OF CONTENTS PRELIMINARY EXAMINATION ................................................................. 3 GENERAL DESCRIPTION .....
An alarm time-out is available to alert the user if too much time has elapsed since the last pH calibration and that re-calibration may be required. The meters provide a controlled access to calibration and GLP settings through a password protection method. The Battery Error Preventing System (BEPS) recognizes batteries levels as they become weaker.
SPECIFICATIONS Range pH -4.00 to 19.99 pH mV ±400.0 mV (HI98240 only) ±2000 mV autoranging (HI98240 only) Temp. -10.0 to 120.0 C (14.0 to 248.0 F) Resolution pH 0.01 pH mV 0.1 mV between ±400mV (HI98240 only) 1 mV outside (HI98240 only) Temp. 0.1 C (0.1 F) Accuracy pH ±0.01 pH @25ºC (@20 C/68 F) mV ±0.5mV between ±400mV (HI98240 only) ±2mV outside (HI98240 only) Temp. ±0.5 C (1 F) from 0 to 70 C (32 to 158 F) ±1 C (1.8 F) outside Typical EMC pH ±0.
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 (HI98240 only) 12 Print GLP data 13 Calibration alarm time-out 00 99 days 00 00 means option disabled 14 Instrument ID code 0000 9999 0000 30 Current time1 hh:mm 00:00 31 Current day1 dd 01 32 Current month1 MM 01 33 Current year1 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; F C 2 99 Password 0000 9999 0000 No
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 (HI98240 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 Ç and È if necessary. 8. When the "S" symbol blinks in the lower LCD, the reading is stable and calibration can be confirmed. Note: It is possible to display temperature pressing the RANGE key. 9. Press ALT and CFM to confirm the first buffer. 10.
mV CALIBRATION PROCEDURE (HI98240 ONLY) A four-point calibration must be performed. The first two calibration points are 0.0 and +350.0 mV for low range calibration; the other two calibration points are 0 and +350 or +1900 mV for high range calibration. 1. Connect a mV simulator (HI8427 or HI931001 with the proper connecting cable) to the meter and set it to 0 mV. 2. Press ALT and CAL when LCD is displaying mV. 3.
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. PRINTER MAINTENANCE TO CHANGE THE INK CARTRIDGE MEMORY CAPACITY When printouts become faint, it might be necessary to change the ink cartridge. Contact the nearest Hanna authorized center. • 1500 data samples which are divided into 16 lots (lots 01 to 16) • 100 data samples for the Log on demand (lot 00).
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. If the meter is OFF, detach the electrode from the meter before immersing the electrode 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.
• • • • • electrodes only): refill with fresh HI7071 or HI8071 for single junction, or HI7082 or HI8082 for double junction electrodes. Dry Membrane/Junction: Soak in HI70300 or HI80300 Storage Solution for at least 1 hour. Drifting: Soak the electrode tip in warm Hanna Solution (HI7082 or HI8082) for one hour, then flush the tip with distilled water. Refill with fresh HI7071 or HI8071 for single junction electrodes, and HI7082 or HI8082 for double junction electrodes.
ELECTRODES HI1615D HI1616D HI1617D HI1618D HI3619D HI3620D combination pH electrode, glass-body, single junction, refillable with built-in temperature NTC sensor and EEPROM for GLP data storing. combination pH electrode, glass-body, single junction, gel-filled with built-in temperature NTC sensor and EEPROM for GLP data storing. combination pH electrode, glass-body, single junction, triple ceramic, refillable with built-in temperature NTC sensor and EEPROM for GLP data storing.
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.
HANNA LITERATURE Hanna publishes a wide range of catalogs and handbooks for an equally wide range of applications. The reference literature currently covers areas such as: • • • • • • • Water Treatment Process Swimming Pools Agriculture Food Laboratory Thermometry and many others. New reference material is constantly being added to the library. For these and other catalogs, handbooks and leaflets, contact your dealer or the Hanna Customer Service nearest to you.
