Description: The HI 710 series is a real time microprocessor- based EC or TDS controller. It provides accurate measurements, flexible ON/OFF or proportional control ca- pabilities, analog input and output, RS485 port, dual setpoint and alarm signal. The system is composed of a case inside which the signal conversion circuitry, the microprocessor circuitry and the output power drivers are contained. MAIN FEATURES OF DIFFERENT MODELS • Display: large LCD with 4 ½ 17 mm digits and 3 ½ 10 mm digits. • LEDs: four LEDs are provided for signaling the energizing of relay 1 and 2 (yellow LEDs) and alarm relays (a green and a red LED). • Relays: 1 or 2 output relays for low conductivity or high conductivity dosage (COM, NO and NC contacts) and 1 output relay for alarm condition (COM, NO and NC con- tacts). • RS485 isolated communication link (HI 700222 and HI 710222 only). • Calibration and Setup procedures allowed only through an unlock password. • Calibration: 2 points with Hanna EC and TDS calibration solutions.• Four different EC working ranges (0 to 199.9μS; 0 to 1999μS; 0 to 19.99mS; 0 to 199.9mS). • Four different TDS working ranges (0 to 100.0ppm; 0 to 1000ppm; 0 to 10.00ppm; 0 to 100.0ppm) for HI 710 models. • Possibility to switch to TDS measurements with conversion factor from 0.00 to 1.00 (HI 710 models only). • Temperature compensation of the HANNA standard solu- tions. • Temperature compensation of the EC and TDS reading with temperature coefficient ß selectable from 0 to 10%/°C. • Manual temperature setting when the temperature probe is not inserted or temperature exceeds the upper range. • Last calibration data internally recorded (non-volatile EE- PROM memory): calibration date and time, cell constant, calibration solution values. • Input:4-ring EC/TDS probe with cell constant 2.0 ± 10%, or 4-20mA analog input from a transmitter. • Output (HI 700221 and HI 710221 only): - isolated 0-1 mA, 10 KΩ maximum load (optional); - isolated 0-20 mA, 750 Ω maximum load (optional); - isolated 4-20 mA, 750 Ω maximum load (optional); - isolated 0-5 VDC, 1 KΩ minimum load (optional); - isolated 1-5 VDC, 1 KΩ minimum load (optional); - isolated 0-10 VDC, 1 KΩ minimum load (optional). • Real time clock.
Price: 500 USD
Location: Oakwood, Georgia
End Time: 2025-01-13T15:55:36.000Z
Shipping Cost: N/A USD
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Item Specifics
All returns accepted: ReturnsNotAccepted
Brand: Hanna Instruments
Model: Hanna HI 710 221
MPN: HI 710 221
