CM204
CM204
Orderable4 ft Crossarm with One CM210 Mounting Kit
Overview
The CM204 is a crossarm that attaches to an instrument tower or tripod. It provides a rugged, weather-resistant sensor mount for one or two sensors. The CM204 is compatible with our tripods and towers. It can also be attached to user-supplied pole.
Technical Description
The CM204 provides a rugged, weather-resistant sensor mount for one or two sensors. It consists of a 4-ft aluminum pipe and the CM210 mounting bracket kit. U-bolts included with the mounting bracket are used to attach the crossarm to a tripod mast, tower leg, or user-supplied vertical pipe (1.0-in. to 2.1-in. OD). All of our tripods and towers are compatible with the CM204. If the CM204 will be mounted on a tower, an additional CM210 bracket can be added so that the crossarm is secured to two of the three vertical risers within the tower.
A U-bolt mounting scheme allows the crossarm to be secured to the tripod or tower at the optimal measurement height for the sensor. The sensor is then mounted to the other end of the crossarm using a variety of mounts—depending on the sensor being deployed. The options available for mounting the sensor to the crossarm are listed as Common Accessories under the Ordering Info tab.
Specifications
- Mounting Material
- 304 stainless-steel bracket with stainless-steel U-bolts and hardware
- Crossarm Material
- 1 in. IPS anodized aluminum pipe
- Pipe Outer Diameter
- 3.34 cm
(1.315 in.)
- Pipe Length
- 1.2 m
(4 ft)
- Weight
- 1.66 kg
(3.65 lb)
Common Accessories
(13)17953
1- x 1-in. Nu-Rail Crossover Fitting
This NU-RAIL® crossover fitting is used to mount a sensor with a 1.0" IPS mounting pipe (typically a wind sensor) to the crossarm. It provides equivalent functionality as the CM220 Right Angle Mounting Bracket.
Orderable1049
3/4 x 1 in. Nu-Rail Crossover Fitting
This NU-RAIL® crossover fitting is used to mount a sensor with a 0.75" IPS mounting pipe (typically a wind sensor) to the crossarm. It provides equivalent functionality as the CM220 Right Angle Mounting Bracket.
OrderableCMB200
Crossarm Brace Kit
The CMB200 Crossarm Brace Kit is designed to provide additional stability to the CM204 crossarm mounted on Campbell Scientific tripods and towers. This kit provides support for crossarms with heavier or sensitive sensor loads, as well as added stability in higher winds. Each kit includes one brace arm and three sets of mounting brackets.
OrderableCM221
Right-Angle Mounting Kit
The CM221 mounts a pipe or tube at 90° to another pipe or tube. It is typically used to attach a sensor with a vertical pipe (including most wind sensors) to a crossarm. The cast aluminum, right-angle mounting bracket has 3.8 cm (1.5 in.) U-bolts and hardware and will accommodate tubing with a 1- to 1.5-in. outer diameter.
OrderableCM230
Adjustable Inclination Mounting Kit
The CM230 Adjustable Inclination Mount secures a directional (Yagi) antenna or a sensor that must be pointed at a specific target (e.g., SI-111, SR50A) to the CM204.
OrderableCM225
Solar Sensor Mounting Stand
The CM225 can attach one pyranometer or quantum sensor to the CM204 crossarm.
OrderableCM235
Magnetic Mounting Stand
The CM235 can attach one peripheral with a magnetic base to the CM204 crossarm. Devices that have a magnetic base include our GPS16X-HVS Geographic Position Receiver, GPS antennas, and some short-range omnidirectional antennas.
OrderableCM210
Crossarm-to-Pole Mounting Kit
The CM210 is included with our CM204 crossarm. An additional CM210 may be useful if the CM204 will be mounted on a tower. The additional CM210 allows the crossarm to be secured to two of the three vertical risers within the tower.
Orderable41003-5
10-Plate Solar Radiation Shield
This 10-plate Gill radiation shield accommodates one HMP45C probe. The shield's louvered construction allows air to pass freely through the shield thereby keeping the probe at or near ambient temperature.
Orderable41303-5A
6-Plate Solar Radiation Shield
This 6-plate Gill radiation shield accommodates one 107, 108, or HMP60 probe. The shield's louvered construction allows air to pass freely through the shield thereby keeping the probe at or near ambient temperature.
OrderableRAD06
6-Plate Solar Radiation Shield
The RAD06 uses a double-louvered design that offers improved sensor protection from driving rain, snow, and insect intrusion. It also has lower self-heating in bright sunlight combined with higher temperatures (> 24°C (~75°F)) and low wind speeds (< 2m/s (~4.5 mph)), providing a better measurement.
OrderableRAD10E
10-Plate Solar Radiation Shield for Larger Sensors
The RAD10E uses a double-louvered design that offers improved sensor protection from driving rain, snow, and insect intrusion.
OrderableRAD14
14-Plate Solar Radiation Shield
The RAD14 uses a double-louvered design that offers improved sensor protection from driving rain, snow, and insect intrusion.
Orderable
Replacement Parts
(5)CM210
Crossarm-to-Pole Mounting Kit
The CM210 is included with our CM204 crossarm but may also be ordered separately as a replacement item. It attaches the CM204 to a tripod mast or tower leg.
Orderable17446
Stainless-Steel U-Bolt Screw 5/16-18 x 1.500 with Silicon Bronze Nuts
The 17446 provides a U-bolt and two nuts as a replacement for the original U-bolt and nuts.
Orderable17492
Stainless-Steel U-Bolt Screw 5/16-18 x 2.125 with 2 Silicon Bronze Nuts
The 17492 provides a 5/16" U-bolt and two nuts. This product is used to mount solar panels, mounts, enclosures, or sensors to a mast, tower, or pole.
Orderable4365
Stainless-Steel Flat Washer 5/16
The 4365 can be purchased to replace a lost or damaged washer.
Orderable4366
Stainless-Steel Lock Washer 5/16
The 4366 may be purchased to replace a lost or damaged washer.
Orderable
Compatibility
Campbell Scientific Tripod and Towers
This crossarm can also be attached to a user-supplied pole (1.0 in. to 2.1 in. OD).
Compatible Products
(26)CM106B
7 to 10 ft Galvanized-Steel-Tubing Tripod with Grounding Kit
OrderableNotes—CM110
10 ft Stainless-Steel Tripod with Grounding Kit
OrderableNotes—CM115
15 ft Stainless-Steel Tripod with Grounding and Guy Kit
OrderableNotes—CM120
20 ft Stainless-Steel Tripod with Grounding and Guy Kit
OrderableNotes—UT10
10 ft Tower with Base, Adjustable Mast, and Grounding Kit
OrderableNotes—UT20
20 ft Universal Tower with Adjustable Mast
OrderableNotes—UT30
30 ft Universal Tower with Adjustable Mast
OrderableNotes—1049
3/4 x 1 in. Nu-Rail Crossover Fitting
OrderableNotes—17953
1- x 1-in. Nu-Rail Crossover Fitting
OrderableNotes—CM230
Adjustable Inclination Mounting Kit
OrderableNotes—CM230XL
Adjustable Angle Mounting Kit, Extended Length
OrderableNotes—CM235
Magnetic Mounting Stand
OrderableNotes—41303-5A
6-Plate Solar Radiation Shield
OrderableNotes—41003-5
10-Plate Solar Radiation Shield
OrderableNotes—41005-5
14-Plate Solar Radiation Shield for the HMP155A
OrderableNotes—43502
Compact Aspirated Shield
OrderableNotes—CM225
Solar Sensor Mounting Stand
OrderableNotes—18098
Eppley Solar Sensor or Cellular Antenna Mounting Stand
OrderableNotes—26120
Net Radiation Sensor Mounting Kit
OrderableNotes—30626
3/4 in. IPS or GPS Antenna Mounting Stand
OrderableNotes—RAD06
6-Plate Solar Radiation Shield
OrderableNotes—RAD10
10-Plate Solar Radiation Shield for Small Sensors
OrderableNotes—RAD10E
10-Plate Solar Radiation Shield for Larger Sensors
OrderableNotes—RAD14
14-Plate Solar Radiation Shield
OrderableNotes—CM255
Solar Adjustable-Angle Mounting Stand
OrderableNotes—CM221
Right-Angle Mounting Kit
OrderableNotes—