* Testing Piezometers for Functionality Prior to Installation
Posted by on 29 February 2012 04:08 PM
|
|
Figure 1. Soil Instruments Standard VW Piezometer 1. Introduction Upon receiving your Piezometers you should visually inspect your shipment to ensure that nothing has happened in transit. When leaving Soil Instruments our Piezometers are fully tested to ensure they are functioning correctly however we do recommend testing the Piezometers prior to installation. This includes taking a base reading on site along with testing during the installation process.
2. Testing the Functionality of the Piezometers Before taking the Piezometers to site a simple functionality test can be performed to ensure the Piezometers are functioning correctly. This can be done simply by:
Figure 2. Lowering a Piezometer into a body of water for testing
3. Possible differences seen When conducting these tests you are looking for a stable linear response from the Piezometer showing increasing pressure as the Piezometer is inserted deeper into the water. The readings you receive from the piezometer should fall within 25F^2/1000 digits of the values stated on the Piezometers calibration sheet. We have a tolerance of 25F^2/1000 digits as there is a possibility that transital influences may affect the readings you are receiving slightly, however this will not cause any reduction of the Piezometers accuracy. Please remember to compensate for any barometric differences that you may be experiencing compared to when the Piezometer was calibrated, calculations for this can be found in the instruments manual.
4. Functionality tests on Site We strongly recommend further tests of the Piezometers on site including taking your base reading. If this base reading on site is not taken then once installed you will only be able to measure pressure change from when the Piezometer is first entered into the ground. We also recommend testing the Piezometer at throughout the installation process to ensure that no damage has occurred to the Piezometer. If your Piezometers readings fall outside the parameters stated above please submit a support ticket detailing the differences you are experiencing.
If you have any further queries, please submit a ticket on the support site or call Soil Instruments on +44 01825 765044 for advice.
| |
|