EC Analog Controller with Input from Probe or Transmitter

HI8931

EC Analog Controller with Input from Probe or Transmitter

$599.99

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.

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Measurement Specific Models

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

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.

Automatic Temperature Compensation

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

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’).

Direct Connection

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

Robust Design

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

Resources

Specifications

Specification Name	Detail
sku	HI8931
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 (@20°C/68°F)	±2% F.S. (excluding probe error)
Typical EMC Deviation	±2.5% of Full Scale ±0.4 mA
Temperature Compensation	automatic, 0 to 60°C (32 to 140°F), with β=2%/°C
Calibration	manual, two point, through offset and slope trimmers
Recorder Output	4 to 20 mA (isolated)
Setpoint Relay	Isolated, 2A, Max. 240V, resistive
Probe	HI7635 for in-line applications or HI7638 for tank (not included)
Power Supply	115 or 230 Vac ±10% (user selectable); 50/60 Hz
Alarm Relay	load, 1,000,000 strokes
Environment	-10 to 50°C (14 to 122°F); RH 95%
Enclosure/ Case Material	DIN 43 700, 144x72 mm (5.7x2.8"), black anodized aluminum; front and back with shockproof ABS plastic, and transparent cover
Dimensions	141 x 69 mm (5.6 x 2.7")
Weight	1 kg (2.2 lb.)

Product Manuals

MAN8931_06_07 Download