Instruction Manual
HI 98311 - HI 98312
Waterproof
EC/TDS & Temperature Meters
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 tech@hannainst.com.
These instruments are in compliance with the 
directives.
PRELIMINARY EXAMINATION
Remove the instrument from the packing material and examine it carefully. If any damage has occurred during shipment, immediately notify your Dealer or the nearest Hanna Customer Service Center.
Each meter is supplied with:
•HI 73311 EC/TDS probe
•HI 73128 Probe removal tool
•4 x 1.5V batteries
Note: Conserve all packing material until the instrument has been observed to function correctly. Any defective item must be returned in its original packing.
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These Instruments are |
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US DESIGN PATENT |
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in Compliance |
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D462,024 |
w w w . h a n n a i n s t . c o m with the CE Directives |
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WARRANTY |
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GENERAL DESCRIPTION |
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HI 98311 and HI 98312 are warranted for one year against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. The probe is 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 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, Hanna Instruments Inc., Woonsocket, Rhode Island, 02895 , USA.
Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice.
HI 98311 and HI 98312 are waterproof EC/TDS and temperature meters. The housing has been completely sealed against humidity and designed to float.
All EC/TDS readings are automatically temperature compensated (ATC), and temperature values can be displayed in °C or °F units.
The EC/TDS conversion factor (CONV) is selectable by the user, as well as the temperature compensation coefficient β (BETA).
The meters can be calibrated at one point.
Measurements are highly accurate with a unique stability indicator right on the LCD.
A low battery symbol warns the user when the batteries are to be replaced. In addition the Battery Error Prevention System (BEPS) avoids erroneous reading caused by low voltage level by turning the meter off.
The HI 73311 EC/TDS probe, supplied with the meter, is interchangeable and can be easily replaced by the user.
The stainless steel encapsulated temperature sensor facilitates faster and more accurate temperature measurement and compensation.
FUNCTIONAL DESCRIPTION |
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SPECIFICATIONS |
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1.Battery compartment
2.Liquid Crystal Display (LCD)
3.ON/OFF/MODE button
4.HI 73311 EC/TDS probe
5.Temperature sensor
6.SET/HOLD button
1.Automatic temperature compensation indicator
2.Stability indicator
3.Battery life percentage indicator
4.Low battery indicator
5.Secondary display
6.Primary display
7.Measuring units for primary display
Range |
Temperature: |
0.0 to 60.0°C / 32.0 to 140.0°F |
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EC: |
0 to 3999 µS/cm (HI 98311) |
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0.00 to 20.00 mS/cm (HI 98312) |
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TDS: |
0 to 2000 ppm (HI 98311) |
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0.00 to 10.00 ppt (HI 98312) |
Resolution |
Temp: |
0.1°C / 0.1°F |
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EC/TDS: |
1 µS/cm ; 1 ppm (HI 98311) |
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0.01 mS/cm ; 0.01 ppt (HI 98312) |
Accuracy |
Temp: |
±0.5°C / ±1°F |
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(@20°C/68°F) |
EC/TDS: |
±2% f.s. |
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Typical |
EMC |
Temp: |
±0.5°C / ±1°F |
Deviation |
EC/TDS: |
±2% f.s. |
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Temperature |
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Automatic, with β =0.0 to 2.4%/ºC |
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Compensation |
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Environment |
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0 to 50°C (32 to 122°F); RH 100% |
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EC/TDS |
Conversion |
0.45 to 1.00 (CONV) |
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Factor |
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Calibration |
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Automatic, at 1 point |
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EC/TDS |
Cal.solutions |
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HI 98311: |
HI7031 (1413 µS/cm) |
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HI7032 (1382 ppm; CONV=0.5) |
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HI70442 (1500 ppm; CONV=0.7) |
HI 98312: |
HI7030 (12.88 mS/cm) |
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HI70038 (6.44 ppt; CONV=0.5 |
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or 9.02 ppt; CONV=0.7) |
Probe (included) |
HI 73311 EC/TDS probe |
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Battery |
Type/Life |
4 x 1.5V with BEPS/typical 100 hours |
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Auto-off |
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After 8 minutes |
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Dimensions |
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163 x 40 x 26 mm (6.4 x 1.6 x 1.0”) |
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Weight |
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85 g (3.0 oz) |
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 areas could cause unacceptable interferences to radio and TV equipment.
Avoid touching the probes at all times.
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.
ISTR98311R2 03/03
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