Hanna Instruments (M) Sdn Bhd
11A, Jalan PJS 11/20,
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Selangor, Malaysia.
+603-5638 9940
Penang Branch Office
Hanna Instruments (M) Sdn Bhd
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11900 Sungai Nibong,
Penang, Malaysia.
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+604-645 4558
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Hanna Instruments (M) Sdn Bhd

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HI8931 EC Analog Controller with Input from Probe or Transmitter

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HI8931 EC Analog Controller with Input from Probe or Transmitter Controllers, Analyzers & Transmitters Process Control
RM 2,941.00
1.5 kg
In Stock


HI8931 series are panel mounted conductivity meters and controllers designed for simplicity of use in a wide range of industrial process applications.

  • Available in four models with different measurement ranges.
  • Temperature compensation ensures fast, accurately compensated readings even during sudden temperature fluctuations.
  • Backlit, LCD display for easy viewing.

Measurement Specific Models

  • Four different models are available with different measurement ranges, each one to be used with the corresponding HI 8936 model.

Use With Transmitter

  • Using the HI8931 in conjunction with a 4-20 mA output transmitter (HI8936 or HI8936L series) will assure a strong, interference free signal at distances up to 300 meters (1000’).

In-line and Tank Use

  • For in-line applications, use the HI7635 probe, while for tanks the HI7638 with external threads is recommended. These probes are provided with a built-in NTC sensor for temperature compensated conductivity measurements.

Direct Connection

  • HI8931 also features a direct connection up to 20 m (67’), without needing to amplify the signal to the conductivity probe.

Automatic Temperature Compensation

  • Built-in temperature sensor in recommended probes ensure fast, accurately compensated readings even during sudden temperature fluctuations.

Robust Design

  • A removable, transparent splash-proof cover protects the front panel.

EC/TDS

EC Range

HI8931AN: 0.0 to 199.9 mS/cm

HI8931BN: 0.00 to 19.99 mS/cm

HI8931CN: 0 to 1999 µS/cm

HI8931DN: 0.0 to 199.9 µS/cm

EC Resolution

HI8931AN: 0.1 mS/cm

HI8931BN: 0.01 mS/cm

HI8931CN: 1 µS/cm

HI8931DN: 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 HI8936

General Meter

Input Channels DIN (probe) or 4-20 mA (transmitter)
EC/TDS Probe HI7635 for in-line applications or HI3001D for flow-thru (not included)

Process Control Meter

Alarm Relay Range

HI8931AN: 0.0 mS and 100.0 mS

HI8931BN: 0.00 mS and 10.00 mS

HI8931CN: 0 µS and 1000 µS

HI8931DN: 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 with knob or disable by wire strap - on rear panel
Digital Input Signal

HI8931AN: HI8936A / A

HI8931BN: HI8936B / BL

HI8931CN: HI8936C / CL

HI8931DN: HI8936D / DL

Backlight continuous on
Enclosure flame retardant ABS body and front panel; transparent splash-proof front cover
Panel Cutout 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 HI8931 series is supplied with mounting brackets and instructions.

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