- The Sample Release Device NEVER goes down the well.
- A safety support line should always be used to lower the Sampler
- Before using the Discrete Interval Sampler, there are two important pieces of information needed.
- Desired Sampling Depth
- Static Water Level
|Setting the Operation Pressure|
|Sampler depth below grade (ft) - static water level below grade (ft) x 0.43 + 10 psi||Sampler depth below grade (m) - static water level (m) x 9.8 + 70 kPa|
|Sampling Depth is 100 ft. - Static Water Level at 30 ft. x 0.43 + 10 psi = 40 psi
Therefore the Discrete Interval Sampler should be pressurized to 40 psi for proper operation.
If no sample is coming out of the Discrete Interval Sampler, remove the tubing from the Sampler to allow venting and then take your sample.