Hanna Instruments

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HI-700221-2 Conductivity Digital Panel Mount Controller

HI-700221-2 Conductivity Digital Panel Mount Controller

HI-700221-2 Conductivity Digital Panel Mount Controller

£905.55 (exc. VAT) £1,086.66 (inc. VAT)

The HI-700 and HI-710 series of controllers, especially designed for EC or TDS control, offer state of the art specifications for your process control. Panel-mounted, they can be configured for ON/OFF, proportional, PI or PID control. Thanks to our exclusive technology here at Hanna, they can be customised to best fit your application.

Bright LEDs show the current status - even for a distance. A menu-driven display aids the user throughout the operations with running messages and clear prompts. All relevant parameters can be simply adjusted and will remain memorised until overwritten.

A password protection feature keeps the controllers safe from tampering.

Mains powered - All mains operated equipment is compatible with UK AC voltage and frequency – 230V, 50Hz.
Water Resistant – Can withstand temporary exposure to water, but should not be submerged or washed under running water.

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HI-700221-2 Conductivity Digital Panel Mount Controller information

Hanna's extended description

HI-700221-2 EC Controller

  • CAL Check™ – Alerts users of calibration status
  • ATC – Automatic temperature compensation
  • 2 point calibration
  • Backlight – Backlit, LCD Display

The Conductivity Digital Controller is panel-mounted and provides accurate measurements thanks to the four-ring EC probe and automatic temperature compensation (ATC Feature).

Users can choose from models featuring on/off or PID control, analogue output of 115V or 230V, and dual set point. The 700221-2 has an analogue output of 230V.

The controller measures 144 x 144mm x 170mm, and weighs 1.6kg (3.5lb). Panel cut out: 140mm x 140mm.

EC Range 0.0 to 199.9 μS/cm, 0 to 1999 μS/cm; 0.00 to 19.99 mS/cm; 0.0 to 199.9mS/cm.

While the HI-700 series measures conductivity, the HI-710 models, complete with the same specifications, measure EC and TDS.


Specifications list


Specifications HI-700 & HI-710
Range EC 0.0 to 199.9 μS/cm; 0 to 1999 μS/cm
Resolution EC: 0.1 μS; 1μS; 0.01mS; 0.1mS; 0.1°C ; TDS: 0.1 ppm; 1ppm; 0.01 g/L (ppt); 0.1g/L (ppt)
TDS Conversion Factor adjustable from 0.00 to 1.00
Accuracy (@25°C/77°F) +-0.5% f.s. (EC/TDS); +-0.5°C (0 to 70°C); +-1°C (outside)
EC Calibration automatic or manual at 1 point
Temperature Compensation Automatic or manual, -10 to 100°C with adjustable temperature coefficient from 0.00 to 10.00%/°C
Outputs analog; isolated 0-1mA, 0-20 mA and 4-20 mA; 0-5 VDC, 1-5 VDC and 0-10 VDC or digital; RS485 bi-directional opto-isolated
Analogue input 4-20mA
Set Point Relay Two contact outputs SPDT 5A-250 VAC, 5A-30 VDC (resistive load), fuse protected (2A, 250V fast fuse)
Alarm Relay Contact output SPDT 5A-250 VAC, 5A-30 VDC (resistive load), fuse protected (2A, 250V fast fuse)
Power Supply 115 VAC +-10% or 230 VAC +-10%; 50/60 Hz
Power Consumption 15 VA
Over Current Protection 400mA 250V fast fuse
Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Dimensions Panel cut-out: 140 x 140 mm, instrument: 144 x 144 x 170mm
Weight 1.6 kg (3.5lb)
Ordering information: Each HI-700 and HI-710 model is supplied with mounting brackets and instructions.

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