CMT Specifications & Considerations

solinst cmt multilevel systems cmt specifications cmt material mdpe cmt tubing outside diamter cmt tubing OD cmt monitoring zones number of monitoring zones cmt channel diameter cmt channel volume cmt installation options sand and bentonite backfill options natural formation collapse image

solinst 7 channel cmt multilevel groundwater monitoring system wellhead

7 Channel

solinst 3 channel cmt multilevel groundwater monitoring system wellhead

3 Channel

Material *MDPE *MDPE
Tubing outside diameter 1.7" (43 mm) 1.1" (28 mm)
Channel diameter 6 - Outer pie channels: nominal 0.4" (10 mm)
1 - Center hex channel: nominal 3/8" (9.5 mm)
3 - Hex channels: nominal 3/8" (9.5 mm)
Channel volume 40 mL/ft 30 mL/ft (center) 30 mL/ft
Installation options** Sand & bentonite backfill Natural formation collapse Bentonite & sand cartridges Sand & bentonite backfill Natural formation collapse
Coil lengths*** (Coil 4 ft dia.) 100 ft (30 m), 200 ft (60 m) & 300 ft (90 m) 100 ft (30 m), 200 ft (60 m), & 500 ft (150 m)
Tubing temperature during installation –15ºC to +35ºC ****
Port plug temperature during installation +15ºC to +35ºC
Pressure differential (water levels) 12.5 inch-pounds torqued port plugs are designed to hold 20 psi (50 ft) of head differential.

 

Note:

* Tubing is MDPE; proprietary mix of HDPE and LDPE products.
** Avoid using 'single lifts' of grout, greater than 50 ft in the unsaturated zone.
*** Each CMT coil measures 1 to 2 ft longer than stated.
**** If air temperature is above +35ºC, use cold water to cool down the tubing at the port before installing the port plug.

 

solinst 7 channel cmt multilevel system standard port assembly

Note:

Port plugs are tightened to a torque of 12.5 inch-pounds. Plugs in the base, or bottom, of the CMT should be torqued sequentially and incrementally to ensure even expansion.

 

solinst cmt multilevel system guide point with port assembly

Note:

Gear clamp is tightened to a torque of 12.5 inch-pounds, so guide point can support up to 20 lbs of additional weight (optional).

 

solinst 3 channel cmt multilevel system standard port assembly

Note:

Port plugs are tightened to a torque of 12.5 inch-pounds.

solinst 3 channel cmt multilevel system guide point

 

Hand Tools for CMT System Assembly

hand tools for solinst cmt system assembly