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Hanna Instruments Canada
Customer Support: (800) 842-6629

Pronto EC Meter for Demineralized Water with LCD and Alarm - HI983304

The Pronto EC Meter HI983304 is a water resistant conductivity meter designed specifically for demineralization and deionization applications where conductivity is extremely low. With a user-selectable setpoint and visual LED alarm system, you can now measure EC with peace of mind. 

  • User-selectable setpoint and visual LED alarm
  • Automatic temperature compensation
  • Water-resistant housing


Engineered specifically for applications using demineralized or deionized water, the HI983304 measures very low conductivity. Hanging the meter above the output of any demineralization system for continuous test measurements. The unit runs without interruption on 12V DC power supply. The built-in visual alarm will activate when any measured value differs from the set point by 1.00 µS/cm, indicating the demineralizing equipment has been exhausted. This exclusive feature will ensure maximum system efficiency with minimum investment. The splash-resistant meter housing has an IP54 rating and features a large, integrated LCD screen that can be easily read from a distance.

The meter is supplied with a HI7631 two-pole, amperometric EC probe for panel mounted mini controllers that measures with accuracy up to 19.00 µS/cm. This probe has a built-in temperature sensor for automatic temperature compensation and has a ½” male NPT threaded connection for insertion mounting. The polyethylenimine (PEI) protective sleeve resists most aggressive chemicals. The HI7631 probe provides a rapid response and high accuracy EC measurement. When using the HI983304 in pure water applications, there is no need to clean or calibrate the EC probe. 

Features at-a-glance:

Water resistant housing

  • The meter housing is rated IP54 meaning it has a high level of protection against particles and a fair amount of protection against water

Automatic Temperature Compensation (ATC)

  • Samples automatically compensated for temperature variations

User selectable setpoint and visual LED alarm

  • Meter will activate when EC value differs from the set point more than 1.00 µS/cm

Additional information

Weight 0.58 kg
EC Accuracy

±2% f.s.

EC Calibration

1 point through trimmer, manual

EC Range

0.00 to 19.99 µS/cm

EC Resolution

0.01 µS/cm


SKU HI983304-01
Name Pronto EC Meter for Demineralized Water with LCD and Alarm – HI983304
EC Range 0.00 to 19.99 µS/cm
EC Resolution 0.01 µS/cm
EC Accuracy ±2% F.S.
EC Calibration Manual, 1 point through trimmer
EC/TDS Temperature Compensation Automatic 5 to 50°C (41 to 122°F) with ẞ=2.4%
EC/TDS Probe HI7631 EC/TDS probe (included)
Power Supply 12 VDC adapter (included)
Setpoint 1.00 to 5.00 µS/cm
Alarm LED blinks when EC value is 1.00 µS/cm higher than setpoint
Dimensions 86 x 94 x 33 mm (3.4 x 3.7 x 1.3”)
Weight 150 g (5.3 oz.)

Ordering Info

HI983304 is supplied with HI7631 EC probe, calibration screwdriver, 12 VDC power adapter and instruction manual.


Pronto EC Meter for Demineralized Water with LCD and Alarm – HI983304