CMT Specifications & Considerations

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Monitoring Options
Terms and Conditions
solinst model 403 cmt multilevel system logo
7 channel cmt multilevel system wellhead showing seven isolated wells at surface

7 Channel CMT System

3 channel cmt multilevel system wellhead showing three isolated wells at surface

3 Channel CMT System

CMT
7 Channel
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)
CMT
7 Channel and 3 Channel
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.

7 channel cmt multilevel system standard port assembly part number 106278

7-Channel Standard Port Assembly (106278):

  1. CMT Oetiker Clamps 41.0 LP
  2. Pie Plug for Base of Channel
  3. Channel Identifier
  4. CMT Screen 6″ 100 Mesh
  5. Pie Plug
  6. Vent Hole

 

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.

403 cmt guide point with port assembly 105856

Guide Point Port Assembly

Guide Point with Port Assembly
Part Number 105856

  1. Gear Clamp

 

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).

3 channel cmt multilevel system standard port assembly part number 107237

3-Channel Standard Port Assembly (107237):

  1. CMT Oetiker Clamps 28.0 LP
  2. Hex Plug for Base of Channel
  3. Channel Identifier
  4. CMT Screen 6″ 100 Mesh
  5. Hex Plug
  6. Vent Hole

 

Note:  

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

3 channel cmt multilevel system guide point part number 107178

Guide Point

3-Channel Guide Point
Part Number 107178:

  1. CMT Oetiker Clamp 30.0 LP

 

solinst cmt installation tool kit

Hand Tools for CMT Multilevel System Assembly

  1. Port Cutting Guide
    (7 Channel Part Number 106850)
    (3 Channel Part Number 107239)
  2. 403 Sheet Metal Shears – 10″
    Part Number 107983
  3. 403 Torque Tool Assembly – 12.5 in lbs
    Part Number 107255
  4. 1/8″ Allen Wrench
    (comes with Port Cutting Guide)
  5. 403 Oetiker LP Pliers
    Part Number 100177
  6. Hex Wrench
    (comes with Port Cutting Guide)

 

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