Pyxis IK-73X PLUS Auto-Brushing Ultra-Low Turbidity Analyzer

The Pyxis IK-73X PLUS is a plug-and-play turbidity analyzer panel that combines an LT-73X ultra-low turbidity sensor with a motorized auto-brushing flow tee, an ultrasonic flowmeter and a touch screen data logger. It is available as the IK-739 PLUS (0.000-40.00 NTU) and the IK-736 PLUS (0.000-1,000 NTU), both EPA-180.1 compliant. Mikron Proses (Üsküdar, Istanbul) provides application consulting on choosing the range and the CloudLink 4G option for your cooling, process or drinking water line.

Turbidity monitoring · Auto-brushing sensor → Send us your requirement

For the measurement background, see the guides on online turbidimeters and turbidity in drinking water.

Sensor and measurement performance

The sensor shares the optical principle of the Pyxis LT-73X family; the IK-73X PLUS turns it into a stand-alone panel with automatic brushing, flow control and display and logging functions. The panel is offered with two models: the IK-739 PLUS (0.000-40.00 NTU, with the LT-739 sensor) and the IK-736 PLUS (0.000-1,000 NTU, with the LT-736 sensor). The ‘-G’ versions include a Pyxis CloudLink 4G gateway. The sensor works with a warm white LED in a 90° surface scatter configuration and is EPA-180.1 compliant. Accuracy is 0.001 NTU or 1% of full scale, minimum resolution is 0.002 NTU, and the sensor responds 4 seconds after immersion.

FT-100 PLUS auto-brushing flow tee

The sensor is installed in the motorized FT-100 PLUS flow tee, which cleans the optical lens of the sensor at regular intervals with user-programmable mechanical brushing cycles and so prevents drift caused by fouling. Brushing frequency and duration are set on the UC-100A touch screen. The minimum inlet pressure of the tee is 0.05 MPa, which also suits low-pressure points at the end of pipe networks. Calibration is done with the L-CAL portable liquid formazin calibration kit.

Flow monitoring and electronics

The panel includes a built-in FS-100 ultrasonic flowmeter that works on the transit time difference principle. It measures flow from 0 to 3,000 mL/min with a resolution of 1 mL/min or ±2% of the value, logs it, and raises an alarm when flow stops. The sensor is connected to the 7-inch color capacitive touch screen over RS-485 Modbus (RTU). The screen stores up to 1 million data and event records in 4 GB of built-in memory and offers 2 × 4-20 mA and RS-485 Modbus RTU/TCP outputs and 2 × 4-20 mA and RS-485 Modbus RTU inputs, with a USB host port and RJ-45 / Modbus-TCP connection. The panel runs on 96-260 VAC at 50-60 Hz.

Sample conditions, protection and size

Sample pressure must be 0.05-0.67 MPa and flow 100-2,000 mL/min, connected with a 1/2-inch NPT line; sample temperature is kept between 4 and 40 °C. The panel and display are IP-65 and the sensor is IP-67. The panel measures 750 × 450 × 243 mm (H × W × D) and weighs about 15 kg; it works at 20-90% relative humidity (non-condensing) and up to 2,000 m altitude.

Ordering information

The IK-739 PLUS (P/N 12001) and IK-739 PLUS-G (P/N 12002) cover 0-40 NTU; the IK-736 PLUS (P/N 12003) and IK-736 PLUS-G (P/N 12004) cover 0-1,000 NTU. Send us your requirement and we will select the range and CloudLink 4G option together.