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HI 2400
Microprocessor
Dissolved Oxygen
Bench Meter
MANHI2400
06/03
www.hannainst.com
This instrument is in compliance with the CE directives
WWW.HANNAINST.COM
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.
CE DECLARATION OF CONFORMITY ..............................................................................39
CE DECLARATION OF CONFORMITY
All rights are reserved. Reproduction in whole or in part is prohibited
without the written consent of the copyright owner, Hanna Instruments
Inc., 584 Park East Drive, Woonsocket, Rhode Island, 02895 , USA.
Visit our Internet Home Page:
www.hannainst.com
2
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 interference to radio and TV equipment,
requiring the operator to take all necessary steps to correct interference.
The metal bands of the probe are sensitive to electrostatic discharges. Avoid touching these metal bands at all times.
To maintain the EMC performance of this equipment the recommended cables must be used.
Any variation introduced by the user to the supplied equipment may degrade the instruments EMC performance.
To avoid electrical shock, do not use this instrument when voltage at the measurement surface exceeds 24VAC or
60 VDC.
To avoid damages or burns, do not perform any measurement in microwave ovens.
39
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.
If service is required, contact the dealer from whom you purchased the
instrument. If under warranty, report the model number, date of purchase,
serial number and the nature of the problem. If the repair is not covered by
the warranty, you will be notified of the charges to be incurred. If the
instrument is to be returned to Hanna Instruments, first obtain a Returned
Goods Authorization number from the Technical Service department and then
send it with shipping costs prepaid. When shipping any instrument, make
sure it is properly packaged for complete protection.
To validate your warranty, fill out and return the enclosed warranty card
within 14 days from the date of purchase.
Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice.
Remove the instrument from the packing material and examine it to make
sure that no damage has occurred during shipping. If there is any damage,
notify your Dealer.
Each HI2400 bench D.O. meter comes supplied complete with:
• HI 76407/2 D.O. probe with 2 m (6.7') cable
• HI 76407A membrane cap (2 pcs)
• HI 7041S electrolyte solution (30 ml)
• 12 VDC power adapter (HI 710005 or HI 710006)
Note: Save all packing material until you are sure that the instrument
functions correctly. All defective items must be returned in the original
packing with the supplied accessories.
GENERAL DESCRIPTION
HI 2400 is a microprocessor-based, logging bench meter for
Dissolved Oxygen measurements.
It can store in memory up to 99 lots with up to 8000 readings. These readings
can be transferred to a computer system for elaboration or permanent storage.
Dissolved Oxygen is indicated in ppm (parts per million) or in %.
Temperature is compensated for by the meter’s ATC circuitry. Salinity compen-
sation in water allows direct determination of Dissolved Oxygen in saline
waters and the altitude compensation readjusts for the altitude variance.
The Dissolved Oxygen probe has a membrane covering the polarographic
sensors and a built-in thermistor for temperature measurements and compensation.
This permeable Teflon®membrane isolates the sensor elements from the testing solution, but allows Oxygen to pass through. When a voltage is applied
across the sensor, oxygen that has passed through the membrane reacts
causing a current flow, and hence determining a reading.
Teflon®is registered Trademark of “Du Pont de Nemours & Co.”
38
3
FUNCTIONAL DESCRIPTION PROBE
3
4
4
7
8
10
5
6
ACCESSORIES
ChecktempCElectronic thermometer (range: -50.0 to 150.0°C)
ChecktempFElectronic thermometer (range: -58.0 to 302°F)
HI 7040MZero Oxygen Solution, 230ml
1
2
HI 7040LZero Oxygen Solution, 460ml
HI 7041SRefilling Electrolyte Solution, 30ml
HI 710005115VAC to 12VDC converter
HI 710006230VAC to 12VDC converter
HI 76407/2Spare probe with 2 meters (6.7') cable
HI 76407/10Spare probe with 10 meters (33') cable
HI 76407/20Spare probe with 20 meters (67') cable
HI 76407A/P5 spare membranes
HI 92000/16Windows® 3.11 compatible application software
HI 92000/32Windows® 95 compatible application software
HI 92001025-pin PC connection cable
HI 920010/99-pin PC connection cable
MANHI2400Instruction manual
9
1.D.O. Probe
2.Protective Cap
3.Watertight Shielded Cable
4.Polypropylene Probe Body
5.Temperature Sensor
6.O-Ring Seal
7.Silver Chloride Anode
8.Platinum Cathode (sensor)
9.Oxygen Permeable Teflon® Membrane
10.Membrane Cap
Teflon is registered Trademark of “Du Pont de Nemours & Co.”
4
Windows is registered Trademark of “Microsoft Co.”
37
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. “96” for year 1996
20) etx end
The meter will send “Err6” if in a different measurement range.
Commands setting parameters:
/MLTo select the data lot for data transfer.
E.g.send “/ML05” to select lot no. 5.
If the lot no. is valid, the meter will send <ACK>, otherwise it
will send <CAN>.
/BRTo set the RS232C baud rate.
E.g.send “/BR0” to set the meter to baud rate of 150
send“/BR1” to set the meter to baud rate of 300
send“/BR2” to set the meter to baud rate of 600
send“/BR3” to set the meter to baud rate of 1200
send“/BR4” to set the meter to baud rate of 2400
send“/BR5” to set the meter to baud rate of 4800
send“/BR6” to set the meter to baud rate of 9600
/PFTo set the RS232C command prefix.
E.g.send “/PF05” to set the command prefix to 05.
Note: <ACK> will be sent by the meter if the command received is ac-
cepted, otherwise it will send <CAN>.
<ACK> equals to ASCII code 06 and <CAN> equals to
ASCII code 24.
If sample data is out of range “07FFFH” is sent.
These commands may be sent with either capital or small letters. Invalid
commands will be ignored. The characters sent by the pH meter are always
capital letters.
36
FUNCTIONAL DESCRIPTION OF HI 2400
Front Panel
1. Liquid Crystal Display
2. Keyboard:
CAL keyto enter or exit the calibration mode; to enter or exit setup
(change setting); to start or exit the D.O. logging mode
CFM key to confirm the calibration values and the set values
UP key to select the calibration value; to change menus in setup (view
settings) and to increase the setting values in setup (change setting)
DOWN key to select the calibration value; to change menus in setup (view
settings) and to decrease the setting values in setup (change setting)
LOG key to display the lot number on the primary LCD and the page
number on the secondary one
SETUP key to enter/exit the setup (view settings)
ON/OFF switch to turn the meter on or off
RANGE key to select dissolved oxygen measurement mode in ppm or in %.
5
Rear Panel
1. Socket for D.O. Probe
2. Reset Button
3. RS 232C Connector
4. DC Power Socket (for HI 710005 or HI 710006)
19) etx end
?DMRequests 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. “1” for % logging selected in this lot
“0” for % logging not selected in this lot
5) Channel #3 status
E.g. “1” for not used “0” for not used
6) Channel #4 status
E.g. “1” for temperature logging selected in this lot
“0” for temperature logging not selected in this lot
7) begin sample time, min. E.g. “59” for 59 minute
8) begin sample time, hour E.g. “12” for 12 hour
9) begin sample time, day E.g. “09” for 9th day
10) begin sample time, month E.g. “09” for September
11) begin sample time, year
E.g. “96” for year 1996
12) logging interval
E.g.“0” for 1 second
“1” for 15 seconds
“2” for 30 seconds
“3” for 1 minu
“4” for 5 minutes
“5” for 30 minutes
“6” for 60 minutes
“7” for 120 minutes
“8” for 180 minutes
13) Total number of samples per lot
E.g. “1234” for total no. of samples: 1234.
14) Logged data in signed integer, repeat sending in logged
channel sequence
6
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