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.
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. | |
