CM261 Single-Axis Tracker Mounting Stand

Overview

The CM261 single-axis tracker pyranometer mount with adjustable plane simplifies the mounting of any pyranometer, ventilation unit, reference cell, or SPN1 to octagonal, round, and square single-axis torque tubes. The CM261 is a combination and simplification of the CM260 and CM265 to make ordering easier and usability friendlier. The bracket includes provisions for mounting the sensors and ventilation units at different heights, allowing the sensing element to be mounted at the same height as the solar modules.

The process of securely mounting and accurately leveling a pyranometer, ventilation unit, SPN1, or reference cell to a single-axis torque tube has traditionally been very difficult. The balance between tightly securing the sensor to the mounting bracket while perfectly leveling the sensor requires great time, skill, and fortitude. Without a secure fit, the sensor’s position will shift, and the sensor’s levelness will potentially be lost. The process is made even more difficult when the sensor is to be mounted on a single-axis torque tube. It is nearly impossible to assure the sensor is both level to the plane and in the right position relative to the height of the array. The CM261 solves both problems.

The CM261 is an adjustable-height, adjustable-plane mounting stand. The installation technician can now securely bolt the sensor to the mount. Then, using the sensor’s bubble level as a reference, the technician levels the plane of the mount by adjusting the built-in leveling bolts.

Images

CM261-SP-NT w/Small Plate and circular torque tube mount for use with most pyranometers and circular torque tubes such as NexTracker and Sunpower
CM261-SP-NT w/Small Plate and circular torque tube mount for use with most pyranometers and circular torque tubes such as NexTracker and Sunpower
CM261-SP-NT w/Small Plate and circular torque tube mount for use with most pyranometers and circular torque tubes such as NexTracker and Sunpower
CM261-LP-GT w/Large Plate and generic torque tube mount for use with most pyranometers and square torque tubes
CM261-SP-AT w/Small Plate and ATI torque tube mount for use with most pyranometers and ATI torque tubes
-VN vent plate for use with VU01 or MV-01 pyranometer ventilation units
-CV CVF4 plate for use with CVF4 pyranometer ventilation unit
-LP large plate for use with SPN1 and reference cells
-SP small plate for use with most pyranometers
Secondary standard pyranometer mounted to a CM261 (pyranometer sold separately)

Specifications

Dimensions 18.8 x 17.78 x 20.32 cm (7.4 x 7.0 x 8.0 in.)
Weight 1.14 kg (2.5 lb)

Compatibility

The CM261 is compatible with any single-axis torque tube, including ATI and NexTracker, that has a 12.7 cm (5.0 in.) diameter.

The various mounting plate options are compatible with different products, as outlined below:

  • The -SP with Small Mount Plate option is compatible with the following: MS-40/60/80, MS-40M/60M/80M, SR30, SR05, SR11, SR15, SR20-T2, SR20-D2, SP Lite 2, CMP3/6/10/11/21/22, SMP3/6/10/11/21/22, CGR3/4, and SGR3/4.
  • The -LP with Large Mount Plate option is compatible with the following: SPN1, PSP, GPP, SPP, and Si-01TC Reference Cell (CS325DM).
  • The -VN with VU01 or MV-01 Plate option is compatible with the following: VU01 and MV-01.
  • The -CV with CVF4 Plate option is compatible with the following: CVF4.

The different torque tube mounting options are compatible with different products, as outlined below:

  • The -AT for ATI Torque Tube option is compatible with octagonal torque tubes such as ATI.
  • The -NT for NexTracker T Tube option is compatible with round torque tubes such as NexTracker.
  • The -GT for Generic T Tube option is compatible with square torque tubes up to 11.748 cm (4.625 in.) in height by 13.335 cm (5.25 in.) in width.
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