The Enhanced Low Flow (ELF) sensor from Creative Sensor Technology measures rate of flow in small diameter closed pipe irrigation systems. This innovative new design, issued US patent no.10060774 B1 in 2018, allows this sensor to measure flow rates over a range from 0.75-75 litres/minute using the proven impeller technology of the other CST flow sensors.
The ELF features two output signal options:
- 2 wire linear frequency similar to our FSI series sensors and compatible with most SMART irrigation controllers, e.g. Rain Bird, Toro and Hunter ACC
- 3 wire scaled pulse for counter type controller inputs, e.g. Hunter Hydrawise
This new design eliminates the need for straight pipe sections up and downstream of the sensor allowing for installation in tighter spaces. In fact, solenoid valves may be connected directly to the downstream end of threaded ELF versions resulting in a flow sensor/master valve combination less than 300mm long.
Designed for the harsh environment of irrigation service, Creative Sensor Technology now warranties all of its sensor electronics with a lifetime replacement guarantee.
- Unique design of custom molded mounting tee
- Provides improved minimum flow detection, expanded measurement range and more repeatable outputs
- Eliminates the need for straight pipe sections before and after installed sensor
- Electronics fully encapsulated in proprietory epoxy compound
- Sensor designed for installation below grade and underwater
- Distinctive lightweight 4 blade-ed impeller
- HDPE material reduces the minimum flow rate detection, resists wear, corrosion and fouling
- Integral High Clearance bearing
- Self cleaning, flushes out solids, wear resistant
- Improved Detection Circuitry
- Circuit contains superior over-voltage and over-current protection, noise filtering and signal conditioning
- Removeable flow sensing insert with o-ring seal
- Captive retaining nut holds insert in place. Simple, one-hand service in a valve box Impeller bearing and shaft located out of flow path
- Easy to troubleshoot
NOTE: This is the 3 wire model, suitable for Hunter Hydrawise controller models
