'Pneumatic Dipstick' Level Gauge

Installation Instructions

HOW IT WORKS

1. The water level in the dip tube is normally at the same level
   as the water in the tank.
2. The pressurizing bulb pushes air into the tube which increases
   the pressure in the tube.
3. As the pressure increases, the water in the dip tube is pushed
   downward until it is completely expelled from the tube.
4. The pressure reached to completely expel the water is the same
   as the water pressure at the bottom of the tank. (The water
   pressure at the bottom increases as the depth of water in-creases.)
5. The reading on the gauge shows the pressure in inches of water
   which is the same as the depth in the tank. Accuracy of the
   gauge is approximately 2%. Note: 1 p.s.i. = 28 inches of water
   depth.
6. Continued pumping of air into the tube will not change the
   reading on the gauge after all the water has been
   expelled.
7. Suitable for water depths up to 8 feet.

HOW TO INSTALL

1. Locate gauge and bulb assembly on wall in garage, utility
   room or shed.
2. Determine buried route and length of vinyl tube between
   tank and gauge location. Allow 15 feet for length of tube
   inside tank and on wall. (100 feet of tubing is supplied.)
   If tank is a greater distance away either;
   1. Extend length with more tubing (available from most
      hardware stores) or,
   2. Affix the top end of the dip tube to a post adjacent to
      the tank. Connect the gauge when a reading is
      needed. Remove and plug tube end when not in use.
3. Drill a 23 /64 inch hole in the top of the tank. Squeeze the
   plain end of the tube through hole. Squeeze tube end
   through hole in sinker weight with approximately 1” protruding
   from other side. Pull the tube until the end rests freely
   on the bottom. Extra length of the tube inside the tank will
   not affect the measurement. Seal tank penetration as
   necessary.
4. Affix instruction label above the gauge.
   Note:
   1. Slope the tubing down towards the tank and bury below
      the frost line if possible. This will prevent condensation
      freezing and blocking the tube.
   2. Be careful not to crimp or crush any of the tubing. Test
      system before and after backfilling.

HOW TO OPERATE

1. Make sure pressure release screw on bulb is closed.
2. Squeeze the pressurizing bulb slowly several times until
   the gauge needle stops rising.
   3. Read inches of water from the inside scale.
3. Refer to tank manufacturer’s information for water volume
   at various levels in your specific tank.
4. Open pressure release screw.
   Suggestion: Mark on the dial cover the full tank position of
   the needle.
   Caution: Do not push the gauge needle beyond the maximum
   reading as damage and a false reading could result. (This
   could occur if there is a blockage or kink in the tubing.)
   Where the gauge is mounted below the tank, make sure the
   tubing rises 1-2 feet above the maximum water level in the
   tank before it turns down to the gauge. (If water rises in the
   tube to the turndown point, the tank could potentially drain by
   siphon action.)

TROUBLE SHOOTING

1. No pressure reading when pumped:
   – Disconnection in air line tubing.
   – Tank is empty.
   – End of tube is above water level.
2. Pressure reading higher than maximum expected:
   – Blockage, kink or restriction in air line tubing.