Hanna Instruments

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HI-8931AN Panel Mounted Conductivity Controller

HI-8931AN Panel Mounted Conductivity Controller

HI-8931AN Panel Mounted Conductivity Controller

HI-8931AN Panel Mounted Conductivity Controller

Use with HI-3001D EC probe
2 year manufacturer warranty
£625.90 (exc. VAT) £751.08 (inc. VAT)

Make process monitoring easy and affordable with a high-range controller from our analogue process control series.

Extremely accurate and simple to install, Hanna’s mid-range controllers offer economical, constant monitoring of pH, Oxidation Reduction Potential (ORP), Electrical Conductivity (EC), and Dissolved Oxygen. The compact, easy-to-use controllers are designed to consistently perform in most environments and conditions twenty-four/seven.

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-8931AN Panel Mounted Conductivity Controller information

Hanna's extended description

An analogue controller can be configured by you to your exact process requirements.

There is no need to worry about space or cost, as all the controllers can be installed in confined spaces and the low cost means previously manual monitoring can now be automated, saving time and money.

HI-8931AN Conductivity Controller (Range 0.0 to 199.9 mS/cm)

A simple panel mounted conductivity controller designed for easy operation. The HI-8931 range should be used with the HI-8936 transmitter series. Using the correct transmitter will ensure a strong, interference-free signal at a distance of up to 300 metres (1000 feet).

The output configuration for connecting a recorder or a PLC can be chosen between 0-20 or 4-20 mA.

Use a HI-7135 electrode for in-line applications or the HI-7638 with external threads for tanks. The electrodes contain a built-in NTC sensor for temperature compensated conductivity measurements.

The controllers have large, easy-to-read displays, fire-retardant casing, electrode input, automatic alarm features, recorder output, plus dosing consent feature on ORP and pH models.

The front panel is protected behind a transparent splash-proof cover.

Order Information:

The HI-8931 series is supplied with mounting brackets and instructions.


Specifications list


EC Range HI-8931AN: 0.0 to 199.9 mS/cm
HI-8931BN: 0.00 to 19.99 mS/cm
HI-8931CN: 0 to 1999 µS/cm
HI-8931DN: 0.0 to 199.9 µS/cm
EC Resolution HI-8931AN: 0.1 mS/cm
HI-8931BN: 0.01 mS/cm
HI-8931CN: 1 µS/cm
HI-8931DN: 0.1 µS/cm
EC Accuracy ±2% F.S. (excluding probe error)
EC Calibration manual, two point, through offset and slope trimmers
EC/TDS Temperature Compensation automatic, 0 to 60°C with β=2%/°C; see also transmitter HI-8936
Input Channels DIN (probe) or 4-20 mA (transmitter)
EC/TDS Probe HI-7635 for in-line applications or HI-3001D for flow-thru (not included)
Alarm Relay Range HI-8931AN: 0.0 mS and 100.0 mS
HI-8931BN: 0.00 mS and 10.00 mS
HI-8931CN: 0 µS and 1000 µS
HI-8931DN: 0.0 µS and 100.0 µS
Dosing Control OFF/AUTO/ON with selection switch
Over Dosing Control adjustable, from 5 min to 60 min at front or disable by wire strap - on rear panel
Digital Input Signal HI-8931AN: HI-8936A / A
HI-8931BN: HI-8936B / BL
HI-8931CN: HI-8936C / CL
HI-8931DN: HI-8936D / DL
Backlight continuous on
Enclosure flame retardant ABS body and front panel; transparent splash-proof front cover
Panel cut out 141 x 69 mm (5.6 x 2.7”)
Recorder Output 0 to 20 mA or 4 to 20 mA (isolated)
Set Point 1, Isolated, 2A, max. 240V, resistive load, 1,000,000 strokes; range: 0.0 to 199.9 mS/cm; 0.00 to 19.99 mS/cm; 0 to 1999 µS/cm; 0.0 to 199.9 µS/cm
Power Supply 230 VAC ±10%; 50/60 Hz
Environment -10 to 50°C (14 to 122°F); RH max 95% non-condensing
Weight 1 kg (2.2 lbs.)
Ordering Information The HI-8931 series is supplied with mounting brackets and instructions.

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