The VWR1 is a compact manual readout unit which can be used with all types of vibrating wire sensors.
Colour coded connections make the VWR1 easy to use with any type of sensor cable. The simple display means that you do not have complicated multiple screen menus and can be operated with just two simple buttons.
The VWR1 comes with a rugged lightweight carry case complete with battery charger and colour coded ‘jumper cables’ complete with crocodile clip
| Signal inputs | Vibrating wire, NTC |
|---|---|
| Internal Power Supply | 9.6Vdc 800mAh Ni-Mh battery pack |
| External Power Supply | Battery Charger for Ni-Mh chemistry |
| Operating Power Consumption | 80mA |
| User Interface | 2 Button Keypad, 128 x 64 backlight LCD Display, VW audio feedback |
| VW Range | 256- 4999 Hz |
| NTC range | 1 -39000 Ohm |
| Operating temperature | 20 to +70 ºC |
| IP rating | IP40 |
| Dimensions | 120 (L) x 85(B) x 35(H)mm |
| Weight | 360g |
Work has been carried out on a £100m project to create a tunnel under the River Humber to carry one fifth of the UK’s gas supply to millions of homes.
The three-mile tunnel houses a new gas pipeline running between Goxhill in North Lincolnshire and Paull in East Yorkshire and was expected to take a year to build. National Grid needed to replace the current pipeline, which is in a trench just below the river bed and is at risk of being exposed by the tides.
The crown of the TBM passed 7m underneath an existing in-service gas pipe, approximately 10” in diameter and a few hundred meters from the reception shaft on the Paull side. On this existing gas pipe in-service, three spots were monitored for changes in strain as the pipe falls in the zone of influence of the TBM.
River Humber Gas Pipeline Replacement Project Case Study
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