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Streaming Current Detectors - SC5200

The Milton Roy Model SC5200 Streaming Current Detector (SCD) is an on line electrokinetic charge analyzer that measures the net ionic and particle surface charge in a chemically treated water or wastewater sample. The SCD allows continuous monitoring and control of the coagulation process, thereby providing:

  • Consistent water quality
  • Uniform chemical dosing under varying conditions
  • Reduced chemical costs
  • Automatic operation of the treatment process

Complete Control Solution

Combines a SCD and process controller in a single unit, eliminating the need for additional control instruments in closed-loop dosing applications.

Ready-to-Use Installation

Once installed, the SC5200 is immediately ready to control coagulant dosing pumps or control valves that accept a 4–20 mA process signal.

Advanced Streaming Current Technology

Features the latest generation of Streaming Current Technology, delivering superior performance based on extensive research and development.

Improved Stability & Response

Incorporates key enhancements in electronics, sampling systems, and overall design for greater process stability, faster response, reliable operation.

Proven Water Treatment Performance

Builds on over a decade of successful SCD applications in water treatment, with innovations that enhance operational efficiency and control accuracy.

Wastewater Treatment Innovation

A SCDs designed for wastewater treatment, enabling effective coagulant feed control for belt presses, centrifuges, and dewatering equipment.

Applications

The Automatic Jet Wash is an optional patented sample cell cleaning system available on Milton Toy SCD’s. The system is designed to maintain cell cleanliness and signal reliability by automatically flushing the sample cell on a predetermined cycle. Flushing is accomplished by injecting water at high velocity through the bottom of the sampling cell, which scours the cell surfaces and forces contaminants into the sample stream drain. Cleaning frequency is field adjustable to suit the application. Signal output is automatically locked during the cleaning cycle to ensure control stability.

Connect With Our Experts

We will help you to identify the right solution for your application, operating conditions and performance requirements

 

Power Required

115 VAC, 50/60 hz (standard) 230 VAC, 50 hz (optional)

Instrument Output

4-20 mA Streaming Current Signal;
4-20 mA Process Signal (max. 500 OHM load each)

Meter Readout

Dual Digital Display: -100 to +100
Streaming Current Units; and Process Set Point

Control Functions

Single loop Proportional+Integral+ Derivative (PID) control; Continuous auto tune; Microprocessor based with self diagnostics; Automatic & Manual mode selectable

Communications

RS-485 (optional)

System Accuracy

1% of full scale

Response Time

Less than 5 seconds

Gain Adjustment

Full range

Zero Adjustment

Full range

Signal Filter

Adjustable low pass

Sample Cell

Flow through, external type, Manual Jet Wash conn. (std); Automatic Jet Wash System (opt)

Sample Flow Rate

Standard probe: 2-4 L/min (0.5-1 gal/min)
High flow probe: 4-20 L/min (1-5 gal/min)

Sample Flow Sensor

Optional, consult Milton Roy

Sample Wetted Parts

PVC, Delrin, PTFE, & Silver

Sample Connections

Barb Type, 1/2” ID tube (standard) Barb Type, 1” ID tube (high flow)

Alarms

Band type: deviation from set point Relays: SPDT, 2 amps at 115/230 VAC

Operating Temp

32º F to 120º F (0 C to 50 C)

Enclosure

NEMA 4X, 316 Stainless Steel

Weight

24 lbs.

Remote Display Option

RC7200 Remote Controller Station (accepts 4-20 mA signal from SC4200 via 2 wire, twisted pair 22 AWG); max 3000 ft. separation

 

Manual Jet Wash

sc-5200-dimensions-manual-jet-wash

Automatic Jet Wash

sc-5200-dimensions-automatic-jet-wash.jpg

SC5200 Data Sheet.pdf

839 KB, PDF

SCD_Bulletin_4500_10-2025.pdf

2.8 MB, PDF

MR-En-Manual-streaming-current-detector-sc5200-manual.pdf

1.5 MB, PDF

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