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.
| 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 ?=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, 144×72 mm (5.7×2.8″), 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.) |
