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vent-captor - Insertion type Air Flow switch for gaseous media
Compact Air Flow Switch for AC/DC Applications
Adjustable Set-Point between 1 m/s and 10 m/s
For general applications
Compact Air Flow Switch for DC Applications
High accuracy Set-Point adjustable between 0.5 m/s and 20 m/s
For critical Applications
Easy installation with Special Flange (supplied), or optional pipe adaptor |
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AALBORG®'s 150mm High/Low Flow Meter with OPTICAL DETECTOR SWITCH is a non-invasive means for detection of a HI or LOW flow. This SENSOR is ideal for signaling alarm, cutoff cock or other device when the float passes the detector (alarm, valve, etc. not included).
A small LED sensor and receiver are mounted on one side of the flow meter. The float inside the tube is detected as it passes across the beam of light. The SENSOR can be used to detect the float passage beyond the SENSOR's set-point or to monitor the float position at a specific level signaling when the float isoutside the range of the SENSOR's light beam.
When performing OEM applications, its compact design and ease of application make it a non-obstrusive, simple-to-use addition to your flow meter.
Use whenever maximum or minimum flow levels need to be monitored automatically. AALBORG®'s OPTICAL SENSOR SWITCH can be used in conjunction with a control relay to power alternate equipment or monitoring devices.
It also helps protect your processes and equipment from damage caused by extreme flow rates. |
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FCI industrial flow switches feature Thermal Dispersion technology in which the temperature difference is greatest in a no-flow condition and decreases as flow increases, cooling the heated RTD. Changes in flow velocity directly affect the extent to which heat dissipates and, in turn, the magnitude of the temperature difference between the RTDs. An electronic control circuit converts the RTD temperature difference into a DC voltage signal. Both of these signals are provided at output terminals and are used to drive two adjustable-setpoint alarm circuits. Both alarms are independently field configurable for flow, liquid level/interface or temperature operation.
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Reliable - Safe – Proven !
Our tried-and-tested flow monitoring switches are used for two basic purposes:
- To ensure a minimum flow rate, e.g. of cooling water or lubricating oil (protects against running dry).
- To start a technical procedure when the flow begins.
Function
The flow monitoring professional switch comprises a paddle system to whose end a permanent magnetic is attached. Above this magnet is a reed contact, located outside the flow of fluid. A second magnet with opposing poles creates the force necessary to reset the switch back to the no flow position.
When the flow being monitored pushes against the paddle system, the paddle swings away. This changes the position of the magnet in relation to the reed contact and thus activates the contact.
As soon as the flow is interrupted, the paddle moves back to its starting position, thus activating the reed contact once again. The force necessary to push the magnet back is provided by the two industrial magnets repelling each other.
Using magnetic force instead of the usual leaf spring means that the switch is considerably more stable in the long term and much less sensitive to pressure peaks.
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Compact Metering Flow switch supplier with analog display
1/2" Thread (NPT or BSP)
Easy to install
Set point adjustable over full measuring range
Flow range adjustable for best resolution
Indexed range pot enables flow rate measurement |
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| Available for single or dual alarm applications, Lake's Flow Alarms/Switches can protect expensive equipment and reduce downtime by ensuring sufficient flows of coolants and lubrication. Offered in aluminum, brass or stainless steel for compatibility with most fluids, all units feature NEMA Type 4X enclosures to withstand outdoor/exposed applications and frequent maintenance wash downs. Field adjustable alarm setting allows for convenient changes with an allen wrench. |
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The Thermal Flow switching Monitor is based on the principle of thermal dispersion. A typical configuration uses two Temperature Detectors set within the tip of the sensor. One Temperature Detector is heated a few degrees above the other one. As the process medium flows over the tip of the sensor it disperses some of the heat from the heated Temperature Detector. The delta temperature is a function of flow velocity and converted into electronic signal. The open collector changes state once the set point has been reached.
Features
Detection of flow velocities in pipes
LED functions Display
Open collector alarm output
Relay out/put
Measuring Range:(Speed)
water: 1~150 cm/s
oil: 3~300 cm/s
Material SUS304, 316, PVDF, PP, available |
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Adjustable Flow switch - Series AFS
For Oils, Water and Gases, Infinite Adjustments
Brass Flow Switch - Series P1
Flow Rates from 0.10 to 1.5 GPM, Fixed Setpoint
Flow Switch - Series P2
Flow Rates from 0.5 GPM to 5 CFM, Fixed Setpoint
Polypropylene Flow Switch - Series P3
Flow Rates from 0.25 to 2.0 GPM, Fixed Setpoint
PPS Piston Flow Switch - Series P4
Flow Rates from 0.1 to 1.5 GPM, Fixed Setpoint
PVC Shuttle Flow Switch - Series P5
Flow Rates from 0.5 to 2.0 GPM, Fixed Setpoint
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| Hedland manufactures one and two-relay flow switches suppliers as well as analog-output flow transmitters. Switch options include SPDT, SPST-NO, and SPST-NC. Flow industrial transmitters include a field-selectable 4-20 mA, 0-5 Vdc and 0-10 Vdc analog output. The flow switches and transmitters are available for almost all mediums including oil, air and other gases, and water and other liquids. Accuracy of +/-2% of full scale. Port sizes from 0.5 to 1.25", available with SAE, BSP or NPT threads. Special professional scales available. |
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- FS Series
Flow switch available In 3/4" BSP + APT professional fittings, this Noryl & Brass material with low volts and ac control circuitry, switching at less than 1 L/min.
- FS Series
In brass and 22mm pipe size. This flow switch has compression fittings, low volts dc and ac circuitry - switching 1 L/min.
- FS Series
Flow switch for 15mm pipe, with vertical and horizontal fit models in copper housing. Suitable for low volts switching.
- FCS Series
Flow switch now in PPS and Noryl with 3/8" BSP & NPT the switch point 0.5 to 0.6L/min in horizontal plane. Can also be vertically mounted. Also available for "switch on" at other flow rates |
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- Piston type
- Fluid : Water , oil , other liquid available
- Flow range : 15 ~ 24000 l/h (at Water)
- Accuracy : ± 3 % F.S , On request : ± 2.5 % F.S
- Size : 1/4" to 2-1/2"
- Connection Size : NPT , Flange Type on Request
- Working Limits : Temperature : -10°C to +150°C
- Max. Pressure : 30 kg/cm²
- Housing enclosure : IP 65
- Housing material :
NS,CS,MS types-Aluminum Alloy
ES type-316SS
- Lens material:Safety glass
- Mounting:Vertical,horizontal available
- Materials : Brass , 316SS wetted parts
- Alarm switch : Micro switch,inductive switch available |
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Sierra's Innova-Switch™ flow and level switches represent the state-of-the-art in gaseous and liquid flow switching or liquid level control. Innova-Switch was designed to meet a broad range of performance and environmental application requirements. The sensor and other wetted materials are 316L stainless steel and feature all welded construction with no moving parts. The Innova-Switch is easy to install and adjust, giving reliable, low maintenance performance in the most demanding applications.
UNIQUE PRODUCT FEATURES
-Range of 0.01 to 5 fps in liquids and 0.1 to 500 fps gases
- Fast response time of 0.5 to 10 seconds (media dependent)
-Wide operating temperature range of -100F to +390F (-70C to 200C)
- Operating Pressure: to 3000 psia (207 bar)
-CE, CENELEC and CSA approval
- Repeatability: +/- 1% of set point (Flow) or 1/32" (0.8mm) Level
-Stability: Drift <0.5% from calibrated set point over a range of +/-50F
- Temperature compensated through entire range
-Enclosure: Explosion Proof; NEMA 3, 4X, 7, 9. CSA, FM, UL, CENELEC and EECS approved
- Process Connection: 0.75" MNPT standard. 0.5" and larger MNPT and various other process connections such as sanitary and flanges optional
- Insertion Length: 2.0" standard. 0.5" or greater optional
- Input Power: 115 VAC, 50/60Hz standard. 230 VAC, 50/60Hz optional, 24VDC optional. 3.1 Watt maximum
- Output: 5A. 250 VAC. DPDT with fail safe capability
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- Easy direct-installation into the existing pipe
- A wide range of pipe sizes from diameter 25 ~ 200
- Adjustable set point
- Reed switch provides a SPDT contact function |
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| Designed with body in aluminium, nickel-plated brass or 304 stainless steel. Execution with visual indication only, graduated scale on the glass tube, max. pressure 15 bar and 0,1 to 60 LPM flow rate; electric execution with visual indication, 1 or 2 adjustable alarm points, max. pressure 15 bar and 0,1 to 60 LPM flow rate; simple electric execution with 1 or 2 adjustable alarm points, max. pressure 150 bar, 0,1 to 140 LPM flow rate. All these models can be supplied with specific springs depending on the fluid viscosity up to 200 Cst. Electric execution for water application with 1 or 2 adjustable alarm points, 0,3 to 60 LPM flow rate, max. pressure 50 bar. |
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EE55 Series
Air Velocity Switch for HVAC Applications
The EE55 air velocity switch is designed for standard HVAC applications with a switching threshold between 2 and 20 m/s.
EE55 consists of an interchangeable sensing probe and a relay unit suitable for panel mounting. The electronics integrated in the sensing probe allow a cable length up to 10 m to the relays unit and ensure high immunity to electromagnetic perturbations.
Low angular dependence and an extension tube allows cost-effective, easy positioning of the sensing probe in ducts with diameter between 50 and 630 mm.
EE56 Series
Air Velocity Switch for lowest Velocities
EE56 air velocity switch is designed for special laminar flow and HVAC applications with a switching threshold between 0.2 and 2 m/s.
EE56 consists of an interchangeable sensing probe and a relay unit suitable for panel mounting. The electronics integrated in the sensing probe allow a cable length up to 10 m to the relays unit and ensure high immunity to electromagnetic perturbations.
Low angular dependence and an extension tube allows cost-effective, easy positioning of the sensing probe in ducts with diameter between 50 and 630 mm. For smooth plant start-up there is the possibility to set the delay time between 20 and 100 s.
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The CF12 is an AC or DC powered thermal manufacturer of flow switch designed to monitor flow status of liquids and gas and can also be used to detect level. A chain of 8 LED's helps the user adjust the set point by giving a visual indication of the flow rate. In addition, there is a di-chromatic LED, which shows the professional switch point status of the unit. The sensing element and process connection of the CF12 are made with 316 S.S. and can be Teflon coated when necessary. The enclosure is glass filled nylon but is also available in aluminum for explosion proof applications.
FEATURES
*Simple to install & low in cost
*No moving parts-maintenance free reliability
*Optimal temperature compensation
*Can operate in temperatures up to 248ºF (120ºC)
*Has a maximum working pressure of 4350PSI (300 bar).
*Chain of 8 LED's-Integrated flow rate/set point indication
*Fast response time for flow or level
*Excellent low flow sensitivity
*Can be coated for aggressive mediums
*Insensitive to dirt and most particles
*Available in threaded, sanitary and adjustable insertion length connections
*3A approved |
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Thermatel® has demonstrated reliable performance as a flow or level switch manufacturers. For use as a flow switch supplier, Thermatel can be used to detect either a high flow or a low flow condition for both gases and liquids. For a level switch, Thermatel can be used to detect difference in thermal conductivity of various media. This includes interface detection between media such as liquid/foam, oil/water and even liquid/solid.
Thermatel probes are available in 316L Stainless Steel, Hastelloy C, or Monel with all welded construction. The technology has no moving parts providing excellent reliability.
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