Discrete Interval Sampler 1" & 1.66" Diameter

Discrete Interval Sampler - Operating Principles


Operating Steps

solinst discrete interval sampler operating principles

High Pressure Hand Pump           Tubing Reel with Pressure/Vent Valve

solinst discrete interval sampler operating principles


1. Using the hand pump, pressurize the Discrete Interval Sampler (DIS) to the required pressure (Pressure/Vent Valve is switched to Pressurize on the reel). The actual pressure needed is calculated based on sampling depth below grade minus static level below grade in feet (meters), multiplied by 0.43 (9.8), with 10 psi (70 kPa) added (e.g. 100 ft (30 m) sampling depth - 30 ft (9 m) to static x 0.43 (9.8) + 10 psi (70 kPa) = 40 psi (275 kPa) needed).

2. Disconnect the hand pump from the reel, then lower the DIS into the well to the desired sampling depth. A cable connector is included at the top of the DIS for easy connection to a suspension cable or Model 103 Tag Line.



For sampling at depths more than 60 m (200 ft) below water level, pressurize the DIS to 100 psi, then lower the sampler to 50 m (160 ft) below water. Increase the pressure to the maximum required, then lower the sampler to the appropriate level. Do the same when retrieving the DIS. Warning: DIS is not designed for use at depths greater than 90 m (300 ft) below static water.


3. At the sampling depth, turn the Pressure/Vent Valve to Vent. Allow 1-3 minutes for the DIS to fill.

4. Reconnect the hand pump, switch the Pressure/Vent Valve back to Pressurize, repressurize the DIS as in Step 1.

5. At the surface, turn the Pressurize/Vent Valve to Vent. Use the Sample Release Device to unseat the bottom check ball and collect the sample.