provide a note indicating that cable length corrections are not configurable for VWP's
Longer cable lengths for Geokon VWP's require a thermistor correction over 1000 ft of cable. Since Sensemetrics does not allow the length of wire to be corrected for. A note in the configuration page should be provided letting users know this.
My first thought was to solve this with the calculator, but converting resistance to temp is a non-linear formula so it's difficult to do so. We only import the temperature value as it stands, so correcting the resistance is extremely difficult and requires a very long formula to calculate R from T and then re-calculate T from R.
If you have the resistance value in your file and can import that then you can use the calculator to calculate Resistance -> Temperature with the resistance addition due to longer cabling applied (see example)
Email me at hallmar.halldorsson@bentley.com if you want to chat about it.
Hi,
My first thought was to solve this with the calculator, but converting resistance to temp is a non-linear formula so it's difficult to do so. We only import the temperature value as it stands, so correcting the resistance is extremely difficult and requires a very long formula to calculate R from T and then re-calculate T from R.
If you have the resistance value in your file and can import that then you can use the calculator to calculate Resistance -> Temperature with the resistance addition due to longer cabling applied (see example)
Email me at hallmar.halldorsson@bentley.com if you want to chat about it.
The attached image shows the correction that should be applied to longer lengths of cables on a 4500 series VWP.