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The FSW-40A and FSW-50-Series flow switches feature 15 A SPDT switches. Their non-magnetic design makes these switches ideal for applications in which rust is a problem.
- Rugged Industrial Design
- Switch Point Adjustable While Unit Is Operating
- 15 A SPDT Switch Directly Controls Pump
- Mounts in Any Position
Retail price from $310
Available
The Series GVS Globe Valve Switches offer accurate flow detection with 1% repeatability and external adjustability over a broad range of flow settings for compatible liquids.
Retail price from $498
Available
The FSW301 flow switch comprises a paddle system with a permanent magnet attached. This construction allows a useful life of up to 100,000,000 switching cycles.
- Adjustable Switch Point
- Low Pressure Drop
- Economical
- Field Installation for ½ to 8′ Pipes
Retail price from $634
Available
The Series AFS Adjustable Flow Switches are externally adjustable piston-type flow switches for oils, liquids and gases. This Series offers an infinite number of flow settings from 0.5 to 20 GPM.
Retail price from $812
Available
The FST1000-Series measures air velocity and provides two SPST contact closures corresponding to high and low alarm set points. The alarm set points adjust from 0 to 100%
- Air Velocity Range up to 10,000 FPM (50.8 m/sec)
- 2% Full Scale Accuracy
- Two Sensor Probe Configurations (Fixed and Remote)
- Hot Wire Air Velocity Sensor Design
Retail price from $446
Available
The Model DAFA Air Flow Indicator and Alarm alerts users of low or no air flow conditions in pipes utilizing a thin, field trimmable vane to sense the air flow rate. An 85 dB audible buzzer alternates with a bright red LED to alert users when the air flow rate drops, indicating low or no flow in the pipe. The DAFA is battery powered to provide versatility for where it can be installed, and offers a yellow LED to indicate a low battery. This device is ideal for monitoring radon mitigation systems by detecting a loss of air flow in the pipe and providing a signal to homeowners if the fan has stopped operating.
Retail price from $58
Available
The Series TDS Thermal Dispersion Flow Switch offers solid state flow detection of non-coating liquids for pump and process protection. SPDT output allows for interfacing with remote PLC or relay control device. The adjustable switch point is factory calibrated at 0.2 fps with LED indication of flow and calibration status. Units feature selectable NO or NC operation and are not damaged by over-ranging flow velocities.
Retail price from $443
Available
This switch package offers a complete solution for flow or no-flow switching in pipes or ducting up to 12′. The compact relay controller actuates valves, pumps, or blowers.
- Offered in Liquid and Gas Configurations
- All-Plastic Construction with PP or PVDF Materials for Corrosive Environments
- Invert Switch Provides Simple NO or NC Relay Operation
- LED Indicators for Fluid, Relay and Power Status
Retail price from $749
Available
The Model 530 Air Flow Switch provides excellent sensitivity and reliability at a very reasonable price. Quality features include a rugged die cast body, stainless steel vane and SPDT snap switch. Unit is field adjustable from 400-1600 FPM. Mounting is fast and simple, with only two screws needed. Vane fits 6″ or larger ducts.
Retail price from $127
Available
The Series TDFS2 Thermal Dispersion Flow Switch is a thermal flow switch that indicates whether the flow rate is above or below a user set flow rate. The unit incorporates two LED status indicators providing visual switch indication. The set flow rate (setpoint) is easily field adjustable with included magnet and the unit has both NO and NC NPN outputs.
Retail price from $326
Available
The FSW-6000/7000-Series are thermal flow switch monitors designed to monitor flow status and also used to detect level of liquids, air and gas with visual indication of flow
- Simple to Install and Low Cost
- No Moving Parts-Maintenance Free Reliability
- Optimal Temperature Compensation — Unaffected by Temperature Gradient
- Can Operate in Temperatures up to 120°C (248°F) with Sanitary Option
Retail price from $797
Available
The Series AVFS Adjustable Air Flow Switch is specifically designed to monitor air flow in ducts and provides a 3 A contact output to indicate a change or loss of flow. The AVFS provides a ±5% set-point repeatability across a full-scale range of 1-10 m/s (197-1969 FPM) and includes a mounting bracket for quick duct mounting.
Retail price from $336
Available
Series BFM Bulk Flow Monitor provides effective monitoring for most flow/no flow conditions in pipes and chutes. It’s sensing techniques, which use a Piezo element, makes the BFM versatile for most flow/no flow applications.
Retail price from $345
Available
Flow Switch Remote Controller
- Remote Relay Controller Mounts on 35 mm DIN Rail or Panel Installation
- Fail-Safe Relay for Actuation of Pumps, Valves or Alarms
- Offered in One and Two Relay Configurations
- LED Indicators for Sensor, Relay and Power Status
Retail price from $346
Available
The WSERD air flow monitor is suitable for monitoring fans, control flaps, humidifiers and electrical heating registers in accordance with DIN 57100, Part 420 and for use with DDC systems. The air flow monitor works according to the calorimetric principle. The extraction of heat by the air flow is measured and converted into the switching value. The sensor contains a heating element and two temperature sensors. A microcontroller controls the heating and measures the temperature differences. From the stored calibration curves, it calculates the air flow speed and transmits the value serially to the control unit. Here another microcontroller determines the switching behavior of the two relays from the default values of the setting controls.
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For monitoring small and medium quantities of non-aggressive liquid in pipes with diameter of 1″, 1/2″, 3/4″. The device does not require any supply voltage. Installation: Vertical in a horizontal pipe. Damping zone at least 5-times pipe diameter in front of and behind the paddle. Mounting/attachment: Union nut G 3/8″ on soldering socket (for soldering into a standard copper T-piece
with outlet 1/2″) or T-piece. Not certified for drinking water.
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This flow monitor was specially developed for monitoring the flow of liquid media. The monitor is typically used in machine and apparatus construction, for monitoring oil, cooling, and lubrication circuits, or as low-water protection in sprinkler systems, heating systems, chillers, and heat pumps. The unit is installed vertically in a horizontal pipe. The calming distance must be at least 5 times the pipe diameter upstream and downstream of the paddle. The maximum flow can be considerably higher than the max. setting the value of the monitor. Not tested for drinking water.
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