HI8931 series are panel mounted conductivity meters and controllers designed for simplicity of use in a wide range of industrial process applications.
Four different models are available with different measurement ranges, each one to be used with the corresponding HI8936 model.
For in-line applications, the HI7635 In-line conductivity probe – NTC sensor is recommended, while the HI7638 In-line Conductivity probe with NTC sensor for immersion, with external threads, is recommended for tanks. These probes have built-in NTC sensors for temperature compensated conductivity measurements.
Built-in temperature sensor in recommended probes ensure fast, accurately compensated readings even during sudden temperature fluctuations.
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’).
HI8931 also features a direct connection up to 20 m (67’), without needing to amplify the signal to the conductivity probe.
A removable, transparent splash-proof cover protects the front panel.
| Weight | 0.45 kg |
|---|---|
| Parameter | Conductivity/TDS |
| EC Accuracy | ±2% F.S. (excluding probe error) |
| EC Calibration | manual, through offset and slope trimmers, two point |
| 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 |
| SKU | HI8931-web |
| Name | EC Analog Controller with Input from Probe or Transmitter – 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 | ±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 (32 to 140°F), with β = 2%/°C |
| Alarm Relay Set Point | load, 1,000,000 strokes |
| Enclosure | DIN 43 700, 144×72 mm (5.7×2.8 in.), black anodized aluminum; front and back with shockproof ABS plastic, and transparent cover |
| EC/TDS Probe | HI7635 for in-line applications or HI7638 for tank (not included) |
| Power Supply | 115 or 230 Vac ±10% (user selectable); 50/60 Hz |
| Environment | -10 to 50°C (14 to 122°F); RH 95% |
| Dimensions | 141 x 69 mm (5.6 x 2.7 in.) |
| Weight | 1 kg (2.2 lb.) |
To empower customers to achieve quality
by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea, to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
To empower customers to achieve quality by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea, to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
To empower customers to achieve quality by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea, to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
