Campbell Scientific CM110, CM115, CM120 Installation Manual
Tripod Installation
Revision
Copyright ©
Campbell Scientific, Inc.
Models CM110, CM115, CM120
: 02/21
2005 – 2021
Table of Contents
PDF viewers: These page numbers refer to the printed version of this document. Use the
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1. Introduction................................................................ 1
2. Precautions ................................................................ 2
3. Initial Inspection ........................................................ 3
3.1 Inspect Packaging.................................................................................3
3.2 Tripod Components ..............................................................................3
3.3 Tools List (for tripod, mast and crossarm) ...........................................3
4. Overview .................................................................... 4
5. Specifications ............................................................ 5
6. Installation ................................................................. 6
6.1 Tripod Installation ................................................................................6
6.1.1 Tripod Base ...................................................................................6
6.1.2 Mast ..............................................................................................7
6.1.3 Installing the Guy Kit .................................................................. 11
6.1.3.1 Guy Duckbill Anchor Kits ................................................ 13
6.1.3.2 Lowering Mast after Attaching Guy Wires ...................... 15
6.1.3.3 Center Duckbill Anchor Kit ............................................. 15
6.1.4 Staking the Tripod Feet ............................................................... 17
6.1.5 Tripod Grounding ....................................................................... 18
6.1.6 Crossarm Attachment .................................................................. 20
6.1.7 Enclosure Attachment ................................................................. 20
6.1.7.1 Enclosure Mounting to Tripod Mast ................................ 20
6.1.7.2 Enclosure Mounting to Tripod Leg .................................. 21
6.2 Mounting Brackets ............................................................................. 23
6.2.1 CM210 Crossarm Mounting Kit ................................................. 23
6.2.2 CM216 Mast Mounting Kit ......................................................... 24
6.2.3 CM220 Right Angle Mounting Kit ............................................. 25
6.2.4 CM230, CM230XL Adjustable Angle Mounting Kits ................ 26
6.2.5 CMB200 Crossarm Brace Kit ..................................................... 27
6.2.5.1 Components ...................................................................... 28
6.2.5.2 Assembly .......................................................................... 28
Figures
1-1. Typical tripod-based weather station ...................................................1
1-2. Tripod tote ............................................................................................2
3-1. Tripod components ...............................................................................3
4-1. CM110 tripod with optional guy wires (guy wires included with
CM115 and CM120) .........................................................................4
5-1. 60-degree guy angle .............................................................................6
6-1. Tripod leg, slide collar components .....................................................7
i
Table of Contents
Table
6-2. Tripod mast and insert ..........................................................................8
6-3. Mast attachment to tripod base .............................................................9
6-4. Mast lock bracket ............................................................................... 10
6-5. Guy kit................................................................................................ 11
6-6. Guy cinch and lever arm .................................................................... 12
6-7. Guy hook and case ............................................................................. 12
6-8. Duckbill guy anchor ........................................................................... 14
6-9. Top view and guy anchor layout ........................................................ 14
6-10. Center Duckbill Anchor Kit ............................................................... 15
6-11. Staking the tripod feet ........................................................................ 17
6-12. Ground rod and clamp ........................................................................ 18
6-13. Lightning rod and tripod ground lug .................................................. 19
6-14. CM204 Crossarm ............................................................................... 20
6-15. Enclosure with the –MM bracket ....................................................... 21
6-16. Enclosure with the –LM bracket ........................................................ 22
6-17. CM210 Crossarm Mounting Kit (shown with user-supplied pipe) .... 23
6-18. CM216 Mast Mounting Kit ................................................................ 24
6-19. CM220 Right Angle Mounting Kit .................................................... 25
6-20. CM230 and CM230XL adjustable angle mounting kits ..................... 26
6-21. CM230XL exploded diagram ............................................................. 27
6-22. CMB200 Crossarm Brace Kit ............................................................ 27
6-23. CMB200 components ......................................................................... 28
6-24. Bracket selection ................................................................................ 29
6-1. Bracket Requirements ........................................................................ 29
ii
Lightning Rod
034B-L Wind Speed
and Direction Sensor
Solar Panel
CM202 Crossarm
CS320 Pyranometer and
CM226
Mounting Stand
Optional Tripod and
Guy
Ground Stakes
(not shown)
Environmental
Enclosure
10-Plate Solar Radiation Shield
with
Relative Humidity
and Temperature Probe
CM204 Crossarm
Tripod Installation Manual
Models CM110, CM115, CM120
1. Introduction
The CM110 (3.1 m, 10.5 ft), CM115 (4.5 m, 15.2 ft), and CM120 (6 m, 20 ft)
tripods are corrosion-resistant stainless steel instrument mounts that support the
attachment of sensors, solar panels, and environmental enclosures (FIGURE
1-1). A guy kit is included with the CM115 and CM120 models and is an
option for the CM110.
HC2A-S3
Solar Sensor
Kit
FIGURE 1-1. Typical tripod-based weather station
1
Tripod Installation Manual Models CM110, CM115, CM120
Mast(s)
Ground Rod
Lightning Rod
Tripod Base
Guy Kit
(6) Stakes
Ground Wires
The Tripod Tote is an option for the CM110-series tripods. The tote is
constructed of nylon, with a main compartment for the tripod base, and pockets
for stowing the other components as shown in FIGURE 1-2.
2. Precautions
FIGURE 1-2. Tripod tote
• READ AND UNDERSTAND the Safety section at the back of this
manual.
• WARNING — Ensure structural integrity during setup and weather
extremes to minimize the chance of damaging the tripod or instruments.
Read all instructions carefully. Once the tripod is in full vertical position,
securely fasten it to the ground using ground spikes.
• WARNING — For installations where soil structure is questionable or the
tripod may experience high wind loads, concrete footings for the tripod
feet and guy anchors should be considered.
• Keep the bottom of the tripod legs free of soil, ice, and debris to prevent
trapping any moisture inside or around the legs.
2
3. Initial Inspection
3.1 Inspect Packaging
Upon receiving the tripod, inspect the packaging and contents for damage.
Claims for shipping damage must be filed with the shipping company.
Locate the packing slip for the order and compare the items listed on the
packing slip to the items that were actually shipped. Report any discrepancies
to Campbell Scientific.
3.2 Tripod Components
FIGURE 3-1 shows the tripod components packaged for shipment. The tripod
base is packaged with the mast, ground rod, lightning rod, and (6) stakes. The
ground rod clamp, lightning rod, and ground wires are enclosed in a bag. The
guy kit (optional for the CM110), and Tripod Tote (optional) are packaged
separately. The CM115 and CM120 tripods include additional mast sections.
FIGURE 1-2 shows how to stow the components inside the tripod tote.
Tripod Installation Manual Models CM110, CM115, CM120
FIGURE 3-1. Tripod components
3.3 Tools List (for tripod, mast and crossarm)
1/2-in and 7/16-in open end wrenches
adjustable wrench
socket wrench with 1/2-in and 7/16-in deep sockets (optional)
Phillips head screwdriver (medium)
flat-head screwdriver (large)
magnetic torpedo level
side-cut pliers
pencil
tape measure
compass and site declination angle
shovel
sledgehammer (for driving ground rod and stakes)
step ladder
3
4. Overview
Tripod Installation Manual Models CM110, CM115, CM120
The tripod (FIGURE 4-1) is constructed from galvanized steel, with
individually adjustable legs that allow installation over uneven terrain.
The tripod includes lightning and ground rods, ground cables, UV resistant
cable ties, and stakes for securing the tripod feet to the ground. A guy kit is
included (optional for the CM110) for sites that experience high wind speeds
(see Section 5, Specifications
with mounting brackets that attach to either the mast or leg section as shown in
Section 6.1.7, Enclosure Attachment
The tripod can be used for a variety of applications. For meteorological
stations, sensors are mounted to the tripod using mounting brackets appropriate
for the model of sensor. For non-meteorological applications, the tripod can be
used to mount instrument enclosures, solar panels, junction boxes, or antennas.
(p. 5)). Instrument enclosures can be purchased
(p. 20).
FIGURE 4-1. CM110 tripod with optional guy wires (guy wires included
with CM115 and CM120)
4
5. Specifications
CM110
CM115
CM120
Height w/mast insert:
3.1 m (10.5 ft)
4.5 m (15.2 ft)
6 m (20 ft)
Weight:
15 kg (34 lb)
18 kg (40 lb)
21 kg (46 lb)
Base diameter w/legs extended:
2 m (7 ft)
2 m (7 ft)
2 m (7 ft)
Dimensions of collapsed tripod:
15 x 15 x 145 cm
15 x 15 x 145 cm
15 x 15 x 145 cm
Vertical load limit:
45 kg (100 lb)
45 kg (100 lb)
45 kg (100 lb)
Mast description
Number of sections:
1 2 3
Length:
1.4 m (4.6 ft)
2.8 m (9.3 ft)
4.3 m (14.0 ft)
Length w/insert:
2.6 m (8.6 ft)
4.1 m (13.3 ft)
5.5 m (18.0 ft)
OD:
4.8 cm (1.9 in)
4.8 cm (1.9 in)
4.8 cm (1.9 in)
Insert OD:
4.45 cm (1.75 in)
4.45 cm (1.75 in)
4.45 cm (1.75 in)
Mounting hole in tripod foot:
0.75 in diameter hole
0.75 in diameter hole
0.75 in diameter hole
Wind load recommendations1
Sustained wind (mph):
121 kph (75 mph)
91 kph (56.25 mph)
68 kph (42.25 mph)
Gust tolerance (mph):
153 kph (95 mph)
115 kph (71.25 mph)
89 kph (55.25 mph)
Tripod tote dimensions:
20 cm (8 in) diameter,
20 cm (8 in) diameter,
20 cm (8 in) diameter,
1
The wind load recommendations for the CM115 and CM120 assume the guy wire anchors are able to hold at least
Tripod Installation Manual Models CM110, CM115, CM120
(6 x 6 x 57 in)
for user-supplied
0.5 in J-bolts
unguyed
129 kph (80 mph)
guyed at feet
unguyed
161 kph (100 mph)
guyed at feet
(6 x 6 x 57 in)
for user-supplied
0.5 in J-bolts
guyed at feet
121 kph (75 mph)
guyed at 60°
guyed at feet
153 kph (95 mph)
guyed at 60º
(6 x 6 x 57 in)
for user-supplied
0.5 in J-bolts
guyed at feet
105 kph (65 mph)
guyed at 60º
guyed at feet
137 kph (85 mph)
guyed at 60º
152 cm (60 in) length
1.8 kN (400 lbf).
152 cm (60 in) length
152 cm (60 in) length
5
Tripod Installation Manual Models CM110, CM115, CM120
WARNING
Anchors must hold at
least 1.8 kN (400 lbf)
in both x, y axis
6. Installation
6.1 Tripod Installation
6.1.1 Tripod Base
FIGURE 5-1. 60-degree guy angle
Tripod installation near power lines is dangerous. The
minimum safe recommended distance from overhead
power lines is two times the height of the tripod and
mast combined. Contact local utility providers to locate
any buried utilities prior to installation.
All three models use the same tripod base. Each leg is adjustable, allowing the
tripod to be adjusted for non-level terrain.
Prepare the area where the tripod will be installed. The tripod requires an area
approximately 7 feet in diameter. Remove any brush and tall weeds, while
disturbing the ground surface and other natural vegetation as little as possible.
Stand the tripod base on end and rotate the feet perpendicular to the legs. Each
leg has a slide collar and T-knob with a spring-loaded pin that locks into holes
located on the underside of the leg as shown in FIGURE 6-1.
Extend each leg until the pin engages in a hole (depress the tab to disengage
the pin from a hole). With the legs extended, orient the tripod so one leg points
away from the equator, or downhill if the tripod is being mounted on a hill. The
tripod is typically plumbed after the mast has been installed, as described in
Section 6.1.2, Mast
(p. 7).
6
Tripod Installation Manual Models CM110, CM115, CM120
Holes for Pins
Slide Collar
Spring-Loaded Pin
T-Knob
6.1.2 Mast
FIGURE 6-1. Tripod leg, slide collar components
The CM110, CM115, and CM120 tripods have one, two, or three mast sections
respectively. The top mast section has a 142 cm (56 in) long insert with a series
of holes that can be extended to lengthen the mast (FIGURE 6-2). Remove the
bolt that secures the insert to the inside of the mast and slide the insert out from
the mast to see the different hole locations. Slide the insert back into the mast,
aligning the appropriate holes of the insert with holes in the mast, and replace
the bolt.
Additional 142 cm (56 in) mast section(s) included with the CM115 and
CM120 tripods have a 41 cm (16 in) long insert that is used to connect the mast
sections together. Remove the bolt that secures the insert to the inside of the
mast and extend the insert 20 cm (8 in); align the holes and replace the bolt.
Attach additional mast sections by sliding the bottom of the next mast section
over the insert of a lower section, aligning the holes and installing the bolt.
Typically, the bottom mast section is attached to the tripod and tilted down to a
horizontal position, and the additional mast sections bolted to the bottom
section.
7
Tripod Installation Manual Models CM110, CM115, CM120
Insert
Mast
FIGURE 6-2. Tripod mast and insert
The tripod base has two sets of right-angled holes for attaching the mast;
typically, the lower set is used (FIGURE 6-3A). The mast is attached to the
base with a pin and secured in the upright position with a locking bracket. Both
the pin and the locking bracket are secured with a lanyard.
To attach the lower mast section, hold the mast upright and align the hole in the
bottom of the mast with the holes in the tripod base. Insert the pin through the
holes, and rotate the wire retainer over the end of the pin as shown in FIGURE
6-3B. The pin should be seated in the bottom of the hole when the mast is
upright. Lift the mast up so the pin is in the upper end of the hole to allow the
mast to be tilted down to a horizontal position.
8
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