The Model VBT-1 Vibration Transmitter continuously detects the vibration in a system and monitors for unusual operating conditions and potential failure. The vibration is converted into an analog signal at the current output. The VBT requires no setup, and there is no software required for configuration. The 2-wire loop power operation, combined with standard M12 micro cable connector and interchangeable mounting studs (1/4″-28 UNF/M8 (2) or the 1/4″-28 UNF), makes for a fast and reliable installation.
Fan Monitoring,Filter Monitoring,Damper Feed Back,Air Handlers
Model Name/Number
Series AVFS Air Flow Switch
Brand
Dwyer USA
Media Type
Gas
Power/Voltage
AVFS-1: 80 to 250 AC/DC (47 to 63 Hz AC). AVFS-2: 24 VDC +-25%.
Material
PBT Body,Titanium Sensor.
Weight
7.2 oz (203 g).
Flow Media Type
Gas
I Deal In
New Only
Country of Origin
Made in India
Series AVFS Air Flow Switch
Monitors Flow in Ducts with Contact Output and Local LED Indication
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.
Product Applications
Fan Monitoring
Filter Monitoring
Damper Feedback
Air Handlers
Models & Ordering
Model Description
AVFS-1 Thermo Air Flow Switch, 80-250 AC/DC.
AVFS-2 Thermo Air Flow Switch, 24 VDC.
Specifications
Air Velocity Range:197-1969 FPM (1-10 m/s). Temperature Limits:5 to 122°F (-10 to 50°C). Humidity Limits:0-90% RH. Wetted Materials:PBT Body, Titanium Sensor. Pressure Limit:14.7 psig (1 bar). Housing:PBT. Repeatability:±5% FS. Switch Type:N.O. SPST. Electrical Rating:3 A @ 30 VDC/250 VAC. Response Time:3-60 seconds. Varies With Flow And Set Point. Power Requirement:AVFS-1: 80 to 250 AC/DC (47 to 63 Hz AC). AVFS-2: 24 VDC ±25%. Power Consumption:3 VA. Electrical Connection:6.5′ (2 m) Cable. Enclosure Rating:IP65. Display:1 Red LED/1 Green LED. Weight:7.2 oz (203 g). Agency Approvals:CE.
Features
Integral Red/Green Air Flow Status LED’s
Flush Sensor Design Limits Issues Due To Dust Or Particulate In The Air Flow
Aerosense Differential Pressure Transmitter Series DPT-R8-3W
Series DPT-R8-3W Differential Pressure Transmitter Monitors Pressure The Series DPT-R8-3W Differential Pressure Transmitter is an extremely versatile transmitter for monitoring pressure. The compact package is loaded with features such as 8 selectable ranges, 2 selectable outputs, optional display and optional Auto-Zero feature which electronically adjusts the transmitter zero at predetermined time intervals (every 10 minutes). The Auto-Zero adjustment takes 4 seconds.
The AZ calibration eliminates all output signal drift due to thermal, electronic or mechanical effects. Optional display and Auto-Zero feature available.
SERIES A2 SUBMINIATURE PRESSURE SWITCH Field Adjustable
Designed for OEM applications, the Series A2 Subminiature Pressure Switch is economical and is equipped with high proof pressure capabilities for demanding applications. The A2 is available with either spade terminals or flying leads (submersible). Switches with spade terminals can be easily adjusted in the field. PRODUCT APPLICATIONS
Air and compatible non combustible, non corrosive gasses
Maximum Pressure
2 psi
Thermal Effect
+/- 0.012% FS/ DegreeF
Output Signal
4-20 mA (option)
Operating
-10 Degree to 140 DegreeF (-23 Degree to 60 DegreeC)
The Series A4 digital differential pressure controller is a patented microprocessor based pressure controller for positive, negative, and differential pressure as well as velocity and flow. The Series A4 differential pressure controller includes (2) 8A SPDT relays and an associated programming menu that allows full configuration of variables such as setpoints, dead band, engineering units, flow coefficients, and more. The programming is done from a user friendly menu on the OLED display or uploaded using an Opti-Link™ programming key. The OLED also displays the exact setpoints or other user defined variables during normal operation. Furthermore, the menu structure can be customized by moving variables to different menu levels to accommodate many applications. Compared to other mechanical products, the Series A4 digital differential pressure controller has a significantly reduced depth, an improved look, and better performance at a similar price.
The Series A2 digital differential pressure gauge is a patented microprocessor based digital pressure gage for positive, negative, and differential measurement designed to be a direct replacement for mechanical gauges. The Series A2 differential pressure gauges utilize an extremely stable piezoresistive sensing technology to give a standard full scale accuracy of 1%. For applications requiring better accuracy, the A2 is also available with 0.5% or 0.25% accuracy. The A2 digital differential pressure gauge also has an optional 4-20 mA output for applications requiring an output signal. The A2 features a bright ½” LED display and process arch, which gives the gauge improved readability and precision. The A2 digital differential pressure gauges also feature 5 user selectable engineering units including in. w.c., mm w.c., cm w.c., kPa, and Pa. The Series A2 offers an improved look, and performance compare to mechanical gauges
Air and compatible non combustible, non corrosive gasses
Maximum Pressure
2 psi
Thermal Effect
+/- 0.012% FS/degF
Output Signal
4-20 mA
Loop Resistance
750 Q max
Response Time
100 ms
The series A3 is a patent pending microprocessor based controller for positive, negative, and differential pressure as well as velocity and flow. The Series A3 includes (2) 8A SPDT relays and an associated software package that allows full configuration of variables such as setpoints, dead band, engineering units, flow coefficients, and more. The programming is done from a user friendly menu on the LCD display or uploaded using an Opti Link™ programming key. The LCD also displays the exact setpoints or other user defined variables during normal operation. Furthermore, the menu structure can be customized by moving variables to different menu levels to accommodate many applications. Compared to other mechanical products, the Series A3 has a significantly reduced depth, an improved look, and better performance at a lower price
Series 2000 Magnehelic Differential Pressure Gauge
Brand
DWYER
Measuring Range
0-50 mm WC
Model Name/Number
Series 2000
Usage/Application
Industrial
Material
Steel
Scale Range
0-100 MM WC
Accuracy
+/-2.5%
Dial Shape
Round
Select The Series 2000 Magnehelic® Gage for a versatile low differential pressure gage with a wide choice of 81 models and 27 options to choose from. Using Dwyer’s simple, frictionless Magnehelic® gage movement, it quickly indicates air or noncorrosive gas pressures–either positive, negative (vacuum) or differential. The design resists shock, vibration, over-pressures and is weatherproof to IP67. Select the -HA High Accuracy Magnehelic® Gage option for an accuracy within 1% of full scale, located below in the Product Configurator. Also included with the –HA option at no extra cost are a mirrored scale overlay and a 6 point calibration certificate.
Note: May be used with Hydrogen. Order a Buna-N diaphragm. Pressures must be less than 35 psi.
Select the Magnehelic gage for high accuracy–guaranteed within 2% of full scale–and for the wide choice of 81 models available to suit your needs precisely. Using Dwyer’s simple, frictionless Magnehelic gage movement, it quickly indicates low air or non-corrosive gas pressures–either positive, negative (vacuum) or differential. The design resists shock, vibration and over-pressures. No manometer fluid to evaporate, freeze or cause toxic or leveling problems. It’s inexpensive, too. The Magnehelic gage is the industry standard to measure fan and blower pressures, filter resistance, air velocity, furnace draft, pressure drop across orifice plates, liquid levels with bubbler systems and pressures in fluid amplifier or fluidic systems. It also checks gas-air ratio controls and automatic valves, and monitors blood and respiratory pressures in medical care equipment
Product Highlights:
Bezel provides flange for flush mounting in panel.
Clear plastic face is highly resistant to breakage. Provides undistorted viewing of pointer and scale.
Precision litho-printed scale is accurate and easy to read.
Red tipped pointer of heat treated aluminum tubing is easy to see. It is rigidly mounted on the helix shaft.
Pointer stops of molded rubber prevent pointer over-travel without damage.
“Wishbone” assembly provides mounting for helix, helix bearings and pointer shaft.
Jeweled bearings are shock-resistant mounted; provide virtually friction-free motion for helix. Motion damped with high viscosity silicone fluid.
Zero adjustment screw is conveniently located in the plastic cover, and is accessible without removing the cover. O-ring seal provides pressure tightness.
Helix is precision made from an alloy of high magnetic permeability. Mounted in jeweled bearings, it turns freely, following the magnetic field to move the pointer across the scale.
Calibrated range spring is flat spring steel. Small amplitude of motion assures consistency and long life. It reacts to pressure on diaphragm. Live length adjustable for calibration.
Silicone rubber diaphragm with integrally molded O-ring is supported by front and rear plates. It is locked and sealed in position with a sealing plate and retaining ring. Diaphragm motion is restricted to prevent damage due to overpressures.
Die cast aluminum case is precision made and iridite-dipped to withstand 168 hour salt spray corrosion test.
Exterior finished in baked dark gray hammerloid. One case size is used for all standard pressure options, and for both surface and flush mounting.
Overpressure Protection:
Blowout plug is comprised of a rubber plug on the rear which functions as a relief valve by unseating and venting the gage interior when over pressure reaches approximately 25 PSIg (1.7 bar). To provide a free path for pressure relief, there are four spacer pads which maintain 0.023″ clearance when gage is surface mounted. Do not obstruct the gap created by these pads. The blowout plug is not used on models above 180″ of water pressure, medium or high pressure models, or on gages which require an elastomer other than silicone for the diaphragm. The blowout plug should not be used as a system overpressure control. High supply pressures may still cause the gage to fail due to over pressurization, resulting in property damage or serious injury. Good engineering practices should be utilized to prevent your system from exceeding the ratings or any component.
O-ring seal for cover assures pressure integrity of case. Samarium Cobalt magnet mounted at one end of range spring rotates helix without mechanical linkages.
