Hanna Instruments Pronto HI 982401 User manual

InstructionManual
(HI 982401)
On-line, Waterproof
ORP meter with Alarm
www.hannainst.com
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IST982401R3 05/05
Hanna Instruments reserves the right to modify the design, construction
and appearance of its products without advance notice.
WARRANTY
ORP HI 982401 is warranted for two years against
defects in workmanship and materials when used for their
intended purpose and maintained according to instructions.
The electrode is warranted for a period of one year. 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 failure. If the repair is not covered by the warranty, you
will be notified of the charges incurred. If the instrument is to
be returned to Hanna Instruments, first obtain a Returned
Goods Authorization Number from the Customer Service
department and then send it with shipment costs prepaid.
When shipping any instrument, make sure it is properly
packaged for complete protection.
All rights are reserved. Reproduction in whole or in part is
prohibited without the written consent of the copyright owner.

Dear Customer,
Thank you for choosing a Hanna product. This manual will
provide you with the necessary information for a correct
operation. Please read it carefully before using the meter.
If you need additional technical information, do not hesitate
to e-mail us at [email protected].
This instrument is in compliance with the directives.
Remove the instrument from the packing material and ex-
amine it carefully. If any damage has occurred during
shipment, immediately notify your Dealer or the nearest
Hanna Customer Service Center.
The meter is supplied with:
• Screwdriver
• 12 Vdc power adapter
Note: Conserve all packing material until the instrument has
been observed to function correctly. Any defective item
must be returned in its original packing.
PRELIMINARY EXAMINATION
HI 982401 is an ORP meter specially designed to
meet the needs of monitoring ORP such as in swimming
pools. The housing has been completely sealed against
vapors and humidity with IP54 rating. Simply hang the
above the sample to be monitored.
The HI 3214P/2 gel-filled ORP electrode (optional) is inter-
changeable and the BNC connector is protected behind a
waterproof sheath. The unique design of the electrode pro-
vides longer life even in harsh conditions.
GENERAL DESCRIPTION
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HI 3214P/2 Double fiber junction, plastic body, Platinum
ORP electrode with 2 m (6.6’) cable and BNC
connector
HI 7020M ORP test solution at 200/275 mV, 230 mL
HI 7020L ORP test solution at 200/275 mV, 500 mL
HI 7091M Reducing solution, 230 mL
HI 7091L Reducing solution, 500 mL
HI 7092M Oxidizing solution, 230 mL
HI 7092L Oxidizing solution, 500 mL
HI 7061L Electrode cleaning solution, 500 mL bottle
HI 710005 12 Vdc power adapter, US plug
HI 710006 12 Vdc power adapter, European plug
HI 710012 12 Vdc power adapter, Australian plug
HI 710013 12 Vdc power adapter, Southern Africa plug
HI 710014 12 Vdc power adapter, UK plug
ACCESSORIES
CE DECLARATION OF CONFORMITY
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 residen-
tial areas could cause unacceptable interferences
to radio and TV equipment.
During operation, ESD wrist straps should be
worn to avoid possible damage to the electrode
by electrostatic discharges.
Any variation introduced by the user to the
supplied equipment may degrade the instrument’s
EMC performance.
To avoid electrical shock, do not use this
instrument when voltages at the measurement
surface exceed 24 Vac or 60 Vdc.
To avoid damages or burns, do not perform any
measurement in microwave ovens.
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1. MOLDED EYE
2. ALARM LED
3. BNC CONNECTOR
4. HI 3214P/2
ORP ELECTRODE
5. 12 VDC POWER
ADAPTER
6. PROTECTIVE
SHEATH
7. LIQUID CRYSTAL
DISPLAY
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FUNCTIONAL DESCRIPTION
The alarm setpoint is adjustable and if the ORP value is out
of range the user is alerted by a red light.
The meter is factory calibrated and does not need recalibration.
You no longer need to worry about battery changes: the unit
runs without interruption on 12 Vdc power supply.
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• With a small screwdriver ad-
just the setpoint trimmer to
display the desired value in
the 350 to 850 mV range (e.g.
680 mV).
•Moved back the switch to
the MEASURE position.
• Close the meter while mak-
ing sure the gasket is in
place before tightening the
screws.
• Whenever the mV reading is
lower than the setpoint, the
red alarm LED blinks to warn
the user.
Maintenance
To minimize clogging and provide longer life to the ORP
electrode, it si recommended to clean it monthly.
Immerse the tip of the electrode in HI 7061 cleaning solution
for at least one hour and then rinse it with tap water.
Check the meter accuracy by immersing the electrode in the
HI 7020 test solution. The reading should be between 200
and 275 mV at 20°C (68°F).
Otherwise clean the platinum tip of the electrode by rubbing it
with a soft cotton or lint-free cloth soaked with HI 7061 clean-
ing solution.
After cleaning, condition the ORP electrode by leaving it in a
pretreatment reducing (HI 7091) or oxidizing (HI 7092) solu-
tion for half an hour. 5

OPERATIONAL GUIDE
ORP electrode CONNECTION
The BNC connector is protected
against vapors and humidity by a wa-
terproof sheath.
• Slide the protective sheath down.
Connect the HI 3214P/2 ORP elec-
trode to the BNC connector and
then slide up. Make sure the con-
nector is completely covered.
• Do not be alarmed if white crystals appear around the
electrode protective cap. This is normal with ORP elec-
trodes and they dissolve when rinsed with water.
HI 982401 ORP
Range ±999 mV
Resolution 1 mV
Accuracy (@20°C/68°F) ±5 mV
Typical EMC Deviation ±5 mV
Setpoint Selectable from 350 to 850 mV
Alarm LED blinks when the measured
ORP value is lower than the setpoint
Calibration Factory calibrated
Probe HI
3214P/2 interchangeable ORP electrode
(optional)
Casing IP54
Power Supply 12 Vdc adapter (included)
Dimensions 86 x 110 x 43 mm (3.4 x 4.3 x 1.7”)
Weight 150 g (5.3 oz.)
SPECIFICATIONS
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• When not in use, rinse the electrode with water and store
it with the protective cap.
• If the electrode has been left dry, soak the tip in HI70300
storage solution for at least one hour to reactivate it.
Taking ORP Measurements
• Turn the meter on.
• Remove the protective cap from the
ORP electrode and immerse the tip
(4 cm/1½”) in the sample.
• The LCD will show the ORP value
measured in mV unit. Allow the read-
ing to stabilize and HI982401 will
start continuous monitoring.
Note: to prevent damages to the meter,
remove the ORP electrode from
the sample before turning the
meter off.
Adjusting the Setpoint
• To access the MEASURE/SET switch
and the setpoint adjustment trimmer,
unscrew the 4 screws on the meter
back and remove the rear panel.
• Move the switch to the SET position
(left).
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