HANNA LITERATURE Instruction Manual Hanna publishes a wide range of catalogs and handbooks for an equally wide range of applications. The reference literature currently covers areas such as: HI 2400 • • • • • • Water Treatment Process Agriculture Food Laboratory Thermometry Microprocessor Dissolved Oxygen Bench Meter and many others. New reference material is constantly being added to the library.
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. This instrument is in compliance with directives. CE DECLARATION OF CONFORMITY TABLE OF CONTENTS PRELIMINARY EXAMINATION ..................................................................
WARRANTY PRELIMINARY EXAMINATION 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.
FUNCTIONAL DESCRIPTION PROBE ACCESSORIES 3 1 4 4 7 ChecktempC ChecktempF HI 7040M HI 7040L HI 7041S HI 710005 HI 710006 HI 76407/2 HI 76407/10 HI 76407/20 HI 76407A/P HI 92000/16 HI 92000/32 HI 920010 HI 920010/9 MANHI2400 Electronic thermometer (range: -50.0 to 150.0°C) Electronic thermometer (range: -58.0 to 302°F) Zero Oxygen Solution, 230ml Zero Oxygen Solution, 460ml Refilling Electrolyte Solution, 30ml 115VAC to 12VDC converter 230VAC to 12VDC converter Spare probe with 2 meters (6.
sample no. 1 —— send ppm data if ppm is log selected —— send % data if % is log selected —— send temperature data if temperature is log selected sample no. 2 ... until the last sample sample “XXX” is signed hex format. 15) last sample time, min. E.g. “59” for 59 minute 16) last sample time, hour. E.g. “12” for 12 hour 17) last sample time, day. E.g. “09” for 9th day 18) last sample time, month. E.g. “09” for September 19) last sample time, year. E.g.
Rear Panel ?DM 1. 2. 3. 4. Socket for D.O. Probe Reset Button RS 232C Connector DC Power Socket (for HI 710005 or HI 710006) 6 19) etx end Requests the meter to send the selected lot data memory. The data is sent in the following order: 1) stx 2) Lot number E.g. “01” for lot No. 1 3) Channel #1 status E.g. “1” for ppm logging selected in this lot “0” for ppm logging not selected in this lot 4) Channel #2 status E.g.
?VM 8) ... Repeat from 2 to 7 for the next available lot No. 9) etx Requests the meter to send the selected lot status. The data is sent in the following order: 1) stx 2) Lot number E.g. “01” for lot No. 1 3) Total number of samples per lot E.g. “1234” for total no. of samples: 1234. 4) Channel #1 status E.g. “1” for ppm logging selected in this lot “0” for ppm logging not selected in this lot 5) Channel #2 status E.g.
Commands requiring an answer: Environment 0 to 50ºC (32 to 122ºF); 95% RH DO? TM? Dimensions 240x182x74 mm (9.4x7.1x2.9") DA? Weight 1.2 kg (2.7 lb.) TI? Response time The response time is approximately 20 seconds for a 95% reading at a constant temperature of 25ºC. The response time for low oxygen readings or at low temperature is approximately 40 seconds. Allow more time to obtain more accurate readings.
ADDITIONAL INFORMATION If you are not using Hanna Instruments HI 92000 application software, please find below some additional information to help your connection to the PC. SENDING COMMANDS FROM PC With terminal programs such as Telix® and Windows Terminal®, it is possible to remotely control your HI 2400. Use HI 920010 cable to connect the meter to the PC, start the terminal program and set the communication options as follows: 8, N, 1, no flow control. Command Types To send a command to the D.O.
TURNING THE METER ON To switch the meter on, press the ON/OFF switch key and leave the probe in the auto-conditioning (polarization) mode before proceeding. After approximately 5 minutes, the instrument can be calibrated (see page 12). If the probe is disconnected, the meter will display “----”. The Platinum cathode (#8 in the Functional Descripti on page 4) should always be bright and untarnished. If it is tarnished or stained, the cathode should be cleaned.
PROBE & MEMBRANE MAINTENANCE The oxygen probe body is made of reinforced plastic for maximum durability. A thermistor temperature sensor provides temperature measurements of the sample. Use the protective probe cap when not in use. To replace the membrane or refill with electrolyte, proceed as follows: • Remove the protective cap by gently twisting and pulling it off the body of the probe (see fig. 1). • Unscrew the membrane cap by turning it counTWIST terclockwise (see fig.2).
The use of a magnetic stirrer to ensure a certain velocity of the fluid is recommended. Always allow a few minutes for thermal equilibrium to occur between the probe and the measurement sample. The next logging will start from page 16. TAKING TEMPERATURE MEASUREMENTS The probe has a built-in temperature sensor. The measured temperature is indicated on the secondary display. INTERFACE WITH PC Allow the probe to reach thermal equilibrium before taking any measurement.
If the ON/OFF switch is pressed while logging, the meter will stop the logging first and then will turn off. MEMORY ORGANIZATION The memory used for storing the logged data is divided into 16 pages. The capacity of each page is 500 samples. It starts to log from page 16 downwards until 1 and then 16 again, overwriting the previous data. However, when this happens the LCD will show page “0”, indicating overwriting has occurred. Each time a new logging period starts, it automatically starts from a new page.
• Press the CAL key and the “~” indicator will blink until the reading is stable. During logging, you can check some information about the logged data. Press the LOG key to display the current sample number (the number of readings that have been stored in the current lot). • As soon as the reading is stable, the “CFM” indicator will start blinking. Press the CFM key to confirm the “0.0%” D.O. reading. Press the RANGE key to display the measurement reading during the logging mode.
TEMPERATURE COMPENSATION The D.O. probe has a built-in sensor for temperature so that the D.O. readings are automatically compensated for temperature effects. LOGGING FUNCTION This function allows the user to log D.O. (in ppm or %) together with the temperature automatically for long periods of time. All logged data can be stored into a PC through the RS232C port. The lot number goes from 1 to 99 and then back to #1. The maximum capacity per lot is 8000 samples.
Press the CAL key at any time to exit the calibration mode. TEMPERATURE CALIBRATION Setting the Buzzer Status In the View Settings Mode, press the UP or DOWN arrow keys to display the buzzer status; ON is the factory setting. Press the CAL key to enter the change setting mode, the buzzer status will start blinking. Each meter has been factory calibrated for the temperature with the D.O. probe supplied and is ready for measurements. The D.O.
The following baud rate can be selected through the UP or DOWN arrow keys: 150, 300, 600, 1200 (factory setting), 2400, 4800 and 9600. • Immerse the D.O. probe in the vessel with the ice and water. • Wait for about 30 seconds until the “CFM” indicator starts blinking. Press the CFM key. The secondary LCD section will show “50.0°C”. Press the CFM key to confirm the baud rate setting.
• Salinity Compensation • Altitude Compensation • Log Interval • Time • Date • Baud Rate • Command Prefix • Buzzer Status If you press the SETUP key anytime in theView Settings Mode the device will enter the measurement mode. Press the CFM key, the day starts blinking. Use the UP or DOWN arrow keys to select the day. CHANGE SETTINGS To modify a parameter from the setup menu press the CAL key. You will enter the Change Settings Mode. If you don’t want to change the parameter press the CAL key.
Use the UP and DOWN arrow keys to set the hour. The salinity affects the D.O. concentration, decreasing its value. Below is a table showing the maximum solubility of oxygen at various temperatures and salinity levels. ºC Press the CFM key and the minutes will start blinking. Use the UP or DOWN arrow keys to select the minutes. Press the CFM key to confirm the time setting. Setting the Date In the View Settings Mode, press the UP or DOWN arrow keys to display the date.
Press the CFM key to confirm the altitude factor. Altitude, Meters above Sea Level ºC 0m 300 600 900 1200 1500 1800 2100 2400 2700 3000 3300 3600 4000 m m m m m m m m m m m m m ºF 0 14.6 14.1 13.6 13.2 12.7 12.3 11.8 10.9 10.2 9.4 8.7 8.1 7.6 6.6 32.0 2 13.8 13.3 12.9 12.4 12.0 11.6 11.2 10.3 9.6 8.9 8.2 7.7 7.1 6.3 35.6 4 13.1 12.7 12.2 11.9 11.4 11.0 10.6 9.8 9.1 8.5 7.8 7.3 6.7 6.0 39.2 6 12.4 12.0 11.6 11.2 10.8 10.4 10.1 9.3 8.6 8.0 7.4 6.9 6.4 5.7 42.8 8 11.8 11.4 11.0 10.
