HANNA HI 710221-2 电导率和TDS数字控制器（双设定值，开/关和PID控制，模拟输出）

-Power Supply: 230 VAC ±10%; 50/60 Hz; 15 VA

- Range:

+Conductivity: 0.0 to 199.9 µS/cm; 0 to 1999 µS/cm 0.00 to 19.99 mS/cm; 0.0 to 199.9 mS/cm

+ TDS: 0.0 to 100.0 mg/L (ppm); 0 to 1000 mg/L (ppm) 0.00 to 10.00 g/L (ppt); 0.0 to 100.0 g/L (ppt)

+Temperature: -10.0 to 100.0°C

- Resolution:

+Conductivity: 0.1 µS; 1 µS; 0.01 mS; 0.1 mS

+ TDS: 0.1 ppm; 1 ppm; 0.01 g/L (ppt); 0.1 g/L (ppt)

+Temperature: 0.1°C

-Accuracy @ 20°C:

                +Conductivity/TDS: ±0.5% f.s.

+Temperature: ±1°C (outside)

-EC Calibration: automatic or manual at 1 point

- Temperature Compensation: automatic or manual, -10 to 100°C with adjustable temperature coefficient from 0.00 to 10.00%/°C

- TDS Conversion Factor: adjustable from 0.00 to 1.00

- Outputs: analog isolated 0-1 mA, 0-20 mA and 4-20 mA; 0-5 VDC, 1-5 VDC and 0-10 VDC

- Analog Input: 4-20 mA

-Set Point Relay: two contact outputs SPDT 5A-250 VAC, 5A-30 VDC (resistive load), fuse protected (2A, 250V fast fuse)

-Alarm Relay: contact output SPDT 5A-250 VAC, 5A-30 VDC (resistive load), fuse protected (2A, 250V fast fuse)

-Over Current Protection: 400 mA 250V fast fuse

- Environment: 0 to 50°C (32 to 122°F); RH max 95% non-condensing

- Dimensions: panel cutout: 140 x 140 mm, instrument: 144 x 144 x 170 mm

- Weight: 1.6 kg (3.5 lb.)

- HANNA HI 710221-2 is provided with dual set point, ON/OFF and PID controls and is supplied with mounting brackets and instructions