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Description
| Brand | HANNA |
| Model | HI720 |
| EC/TDS | |
| EC Range | 0 to 2000 mS/cm (auto-ranging) |
| EC Resolution | 1 µS/cm (0 to 1999 µS/cm); 0.01 mS/cm (2.00 to 19.99 mS/cm); 0.1 mS/cm (20.0 to 199.9 mS/cm); 1 mS/cm (200 to 2000 mS/cm) |
| EC Accuracy | ±2% f.s. |
| EC/TDS Temperature Compensation | automatic or manual, -30 to 130°C |
| Meter Temperature | |
| Temperature Range | -30 to 130°C / -22 to 266°F |
| Temperature Resolution | 0.1°C / 0.2°F |
| Temperature Accuracy | ±0.5°C / ±1°F |
| General Meter | |
| Temperature Probe | three-wire or two-wire Pt100 or Pt1000 sensor with automatic recognition and damage test |
| Process Control Meter | |
| Analog Ouput Signal | one or two independent outputs; 0-22 mA (configuring as 0-20 mA or 4-20 mA) |
| Digital Input Signal | digital transmitter, hold and advanced cleaning inputs |
| Digital Output Signal | one digital insulated contact closed upon hold mode |
| Power Consumption | 10 VA |
| Max. Oscillation Frequency | 8 MHz |
| Enclosure | single case 1/2 DIN |
| Installation Category | II |
| Alarm Relay | 1 electromechanical relay SPDT; 5A-250 VAC, 5A-30 VDC (resistive load); fuse protected: 5A, 250 V fuse |
| Dosing Relay | 1, 2, 3 or 4 electromechanical relays SPDT; 5A-250 VAC, 5A-30 VDC (resistive load); fuse protected: 5A, 250 V fuse |
| Power Supply | 24 VDC/ac, or 115 VAC or 230 VAC or 100 VAC ±10%, 50/60 Hz; fuse protected: 400 mA, 250 V fast fuse |
| Environment | 0 to 50°C (32 to 122°F); RH max 85% non-condensing |
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