Manual Jet Wash

The Milton Roy Model SC4200 Streaming Current Detector (SCD) is an online 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:
Large LCD display provides real-time Streaming Current readings from -100 to +100 units for easy process monitoring.
Full-range Zero, Gain, and Filter controls allow precise tuning to match changing treatment conditions.
High and Low alarm functions plus selectable Calibration and Run modes simplify operation and maintenance.
Two 4–20 mA Streaming Current outputs enable seamless integration with control and monitoring systems.
Industrial-grade construction featuring a 316 stainless steel enclosure, advanced electronics, and patented Phase Correction circuitry.
High-flow probe design, manual Jet Wash connection, compatibility with RC7200 or other controllers support efficient automatic process control.

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The Automatic Jet Wash is an optional patented sample cell cleaning system available on Milton Roy 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 a 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.

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) |
Instrument Output | Two 4-20 mA Streaming Current Signals: |
Meter Readout | Digital: -100 to +100 SC Units |
Operating Modes | Calibration and Run mode selectable |
System Accuracy | 1% of full scale |
Response Time | Less than 5 seconds |
Gain Adjustment | Full range continuous from 1-10 on front panel; additional internal adjust |
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) |
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 | High and Low adjustable |
Operating Temp | 32º F to 120º F (0 C to 50º 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 |


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