Vented VW Pressure Transducer

Vented VW Pressure Transducer

Applications

The Vented VW Pressure Transducer is designed specifically for monitoring changes in water levels in wells and stilling basins.

Operation

The  Venter VW Pressure Transducer converts water pressure to a frequency signal via a patented* arrangement of diaphragm, a tensioned steel wire, and an electromagnetic coil. The pressure transducer is designed so that a change in pressure on the diaphragm causes a change in tension of the wire. An electromagnetic coil is used to excite the wire, which then vibrates at its natural frequency. The vibration of the wire in the proximity of the coil generates a frequency signal that is transmitted to the readout device. The readout or data logger stores the reading in Hz. Calibration factors are then applied to the reading to arrive at a pressure in engineering units.

Vented VW Pressure Transducer

Advantages

Two Ranges: The vented vw pressure transducer is available in 22 and 50 psi ranges.

Large Diameter Vent Tube: The large diameter vent tube provides quick response to changes in atmospheric pressure and cannot be blocked by droplets of condensation.

Oversize Desiccant Chamber: The large capacity, low maintenance desiccant chamber keeps the vent tube dry for 3 to 6 months.

For more information

Please download the datasheet and manual for the Vented VW Pressure Transducer.

These documents can be viewed and printed with Adobe Acrobat Reader.

Venter VW Pressure Transducer Specifications

VENTED PRESSURE TRANSDUCER
22 PSI Vented Transducer 52612402
50 PSI Vented Transducer 52612405
Sensor Type Pluck-type vibrating wire sensor with built-in thermistor. Transducer includes dessicant chamber. Vented signal cable ordered separately
Range 1.5 bar (22 psi) or 3.45 bar (50 psi)
Resolution 0.025%FS with VW Data Recorder
Calibration Accuracy ±0.1% FS
Maximum Pressure 2 x rated range
Filter 50-micron sintered stainless steel
Calibration Eleven-point calibration
Temperature Coefficient < 0.02% FS per °C
Materials Stainless steel
Dimensions 29 x 191 mm (1.125 x 7.5")
Weight 0.45 kg (1 lb)
VENTED SIGNAL CABLE
Vented Cable 50614410 Shielded cable with four 22-gauge tinned- copper conductors, 0.25" vent tube, and polyurethane jacket. For use between transducer and desiccant chamber. Specify feet or meters
Splice Kit for Vented Cable 50614415 Contains components required to splice five conductors and vent tube
Non-Vented Signal Cable 50613524 Shielded cable with four 22-gauge tinned- copper conductors for use between dessicant chamber and readout station or data logger. Specify feet or meters
REPLACEMENT ITEMS
Desiccant Chamber 52612495 Prevents moisture from entering cable and vent tubing. Desiccant can be renewed in an oven. Protects one transducer. 108 x 108 x 64 mm deep (4.25 x 4.25 x 2.5")
Extra Desiccant Pack 02540003 Anhydrous calcium sulfate in moisture proof container. Sufficient to replace desiccant in one chamber
READOUTS
VW Data Recorder 52613500 This easy to use readout displays and records VW sensor data in Hz or Hz2, and thermistor or RTD data in degrees C. See separate data sheet
DATA LOGGERS
VW MiniLogger 52613310 The VW MiniLogger is a reliable, low-cost data logger designed to monitor a single vibrating wire sensor. See separate dataset for details
4-Channel V-Logger 52615140
8-Channel V-Logger 52615180
Campbell Scientific Data Loggers Compatible data loggers include the Campbell Scientific CR800 or CR1000 with VW interface or the CR6. AM16/32 multiplexer can accommodate 16 pressure transducers with temperature readings or 32 pressure transducers without temperature readings. See separate datasheet for details.