Accuracy
Continuously flowing sample flows through the patented* bubble removal system, which vents entrained air from the sample stream and eliminates the most significant interference in low level t

Simplicity

A simplified two-module design includes the sensor and the controller interface. The controller accepts two turbidity sensors€”adding a second 1720E sensor makes a system with two complete turbidimeters. Connections are simple plug & play.

Data Collection and Display

The 1720E Turbidimeter uses the sc200 Controller to receive data from up to two sensors. A built-in data logger collects turbidity measurement at user selectable intervals （1-15 minutes）, along with calibration and verification points, alarm history, and instrument setup changes for 6 months. Communications using MODBUS®/RS485, MODBUS®/RS232, LonWorks® protocols or the wireless IR port are available. The sc200 Controller is also compatible with AquaTrend® Networks. Local display, recall, graphing, and trending in CSV format make chart recorders redundant.

USEPA Reporting

Meets and exceeds USEPA Method 180.1 for measuring turbidity for drinking water compliance. One controller accepts up to two plug and play sensors giving you two complete turbidimeters. Sensitive to fine changes in low level turbidity with a built-in bubble removal system. Built-in datalogger stores up to 6 months of data. Versatile digital output-MODBUS protocol, LonWorks or wireless IR port. Two year warranty.

Experience

The 1720E Turbidimeter reflects 45 years of Hach leadership in turbidity measurement science. Hach has the largest turbidimeter installation base in the world. And, Hach offers a two-year warranty on the 1720E.

What's in the box

1720E, 1720E User Manual, and 1000 mL 20 NTU StablCal ®.

Specifications

Accuracy:（Defined according to ISO 15839.
±2% of reading or ±0.015 NTU （whichever is greater） from 0 to 40 NTU ; ±5% of reading from 40 to 100 NTU

Accuracy 2:±5% of reading from 40 to 100 NTU

Alarm:Three set-point alarms, each equipped with an SPDT relay with unpowered contacts rated 5A resistive load at 230 Vac; built into the sc200 Controller

Certifications:Listed by ETL to UL 61010A-1: Certified by ETL to CSA C22.2 No. 1010.1: CE certified by Hach Company to EN 61010-1

Communication:Network card compatible; MODBUS®/RS485, MODBUS/RS232, PROFIBUS, HART

Compliance:Standard Methods 2130B, USEPA 180.1, Hach Method 8195

Dimensions （H x W x D）:10 in x 12 in x 16 in （254 mm x 305 mm x 406 mm）

Drain Fitting:1/2 NPT female, 1/2 hose barb （provided）

Enclosure Rating:NEMA 4X/IP66

Flow Rate:Sample Inlet Fitting: 1/4 NPT f, 1/4 compression fitting （provided）

Number of Alarms:Three set-point alarms, each equipped with an SPDT relay with unpowered contacts rated 5A resistive load at 230 Vac; built into the sc100 Controller

Operating Humidity:5 to 95 % non-condensing

Operating Temperature Range:0 to 40 °C （Double Sensor System）

Outputs:Recorder Two selectable for 0-20 mA or 4-20 mA; output span programmable over any portion of the 0-100 NTU range; built into the sc100 Controller

Power Requirements （Hz）:50 - 60 Hz

Power Requirements （Voltage）:100 - 230 V AC

Range:0.001 to 100 Nephelometric Turbidity Units （NTU）

Repeatability:（Defined according to ISO 15839.）
Better than ± 1.0 % of reading or ±0.002 NTU, whichever is greater

Response Time:Initial response in 1 minute, 15 seconds for a full-scale step change

Sample Flow Rate:200 to 750 mL/minute （3.1 to 11.9 gal/hour）

Sample Temperature:0 to 50 °C （32 to 122 °F）

Shipping Weight:1720E Turbidimeter and sc100 Controller: 
6.12 kg （13.5 lbs.）

Signal average time:User selectable from 6, 30, 60, 90 seconds; default 30 seconds

Storage Conditions:-20 °C to 60 °C

- See more at: http://www.hach.com/1720e-low-range-process-turbidimeter-turbidity-sensor-only/product-details?id=7640457219&callback=qs#sthash.p47wIYLN.dpuf