What’s in the Box
The MICRO-FLO Paddlewheel Flow Sensor is shipped with the following contents:
- MICRO-FLO flow sensor with adapters and 6 feet of cable
- Operating Manual
Preparation
The MICRO-FLO is designed to withstand outdoor conditions. A cool, dry location where the unit can be easily monitored is recommended. Special ventilation is not required.
Vibration and heavy loads will damage the meter! High pressures and temperatures will damage the meter. Refer to the Pressure vs. Temperature diagram for details.
Physical installation
The MICRO-FLO sensor can be mounted horizontally or vertically. The paddle axle must remain horizontal.
Never allow the meter to support the weight of related piping.
The MICRO-FLO can read flow from either direction.
The MICRO-FLO can only be used with fluids that can pass infrared light.
The MICRO-FLO can be attached directly to the suction or discharge connection of certain pumps.
The MICRO-FLO should be attached to the suction side of a peristaltic pump, and the discharge side of a diaphragm pump. However, there can be exceptions depending on the type of pump and the relative location of the sensor.
If possible, install a strainer before the MICRO-FLO to prevent particulates from entering the sensor. The MICRO-FLO 10 and 20 models are particularly prone to clogging when particulates are present.
Flow Verification (FVS)
See below for a list of FVS (flow verification) compatible Blue-White pumps:
A-100NV, A-100NA, A-100NF, CD1, MD1, A1, M1, A2, M2, A3, M3, A4, M4.
Pump Shut-Down Time = If chemical should fail to inject in the amount of time specified, the pump will automatically shut-down, also triggering an alarm relay.
Pump will stop pumping if the sensor detects no flow. A relay will then close allowing for remote alarm indication or initiation of a back-up injector pump.
Wiring
The MICRO-FLO can be wired directly to pumps accepting an FVS signal. Refer to the instruction manual of the pump for specific wiring details. We recommend using a delay time with FVS signals to prevent false triggering.
The MICRO-FLO has a 3-wire cable. The red wire is for 8 – 28 VDC power. The bare wire provides 5 VDC signal output. The black wire goes to ground.
If wiring the MICRO-FLO to a controller that accepts square wave pulse signals, the controller can be programmed with the provided K-factors to measure flow.
