How to Guide

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Commercial Pressure and Float Switches for Power Circuits
Selection Guide—Float Switches
8
03/2011
Class 9049—Accessories for Class 9036 Type D and G
NOTE: When ordering float accessories, first specify the desired accessory kit, then as a second item,
give the catalog number and the quantity of the additional tubing kits required. For example, for a
9049A6C kit with 15 ft of tubing, specify:
• 9049A6C, quantity = 1 (float with 5 ft of tubing)
• 9049T1, quantity = 4 (2.5 ft of tubing each, for a total of 10 additional ft)
Compensating Spring
Compensating springs support the weight of long rods that cannot be supported by center-hole floats.
Example
Accessory Kits
Tapped-at-Top Floats
(#304 SS)
[1]
1
Maximum recommended tubing length for tapped-at-top float: 12.5 ft (3810 mm).
Center-Hole Floats
(#304 SS)
[2]
2
Maximum recommended tubing length for center-hole float: 30 ft (9144 mm).
Additional Tubing
[3]
3
Additional tubing kits add on to float accessory kits and include a connector.
Tubing (rods) 5 ft brass 5 ft Al 5 ft SS 5 ft brass 5 ft Al 5 ft SS 2.5 ft brass 2.5 ft Al 2.5 ft SS
Net buoyancy in water
7 in. float
[4]
4
Net buoyancy calculated with the float 80% submerged, allowing for a 20% operating margin. Buoyancy data calculated for use in water. Contact the Sensor
Competency Center for buoyancy data in media having a specific gravity different than water (1.0).
60 60 60 70 70 70 — — —
Total weight of stops
oz (g)
3 (85) 3 (85) 3 (85) 6 (170) 6 (170) 6 (170) — — —
Number of stops 222444———
Weight of the included 5 ft rod
oz (g)
18.5 (524) 6 (170) 16.9 (479) 18.5 (524) 6 (170) 16.9 (479) — — —
Weight per ft of extra rod
oz (g)
3.7 (105) 1.2 (34) 3.4 (96) 3.7 (105) 1.2 (34) 3.4 (96) 3.7 (105) 1.2 (34) 3.4 (96)
Catalog Numbers 9049A6 9049A6A 9049A6S 9049A6C 9049A6CA 9049A6CS 9049T1 9049T1A 9049T1S
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Calculation example
Measuring 15 ft of tank depth
System has 15 ft of brass rod, 4 stops, and a
center hole float.
Buoyancy is positive, so no compensating
spring is required
Float buoyancy 70.0 oz
Total weight (61.5 oz)
Weight of stops: (6.0 oz)
Weight of 5 ft of brass rod (included): (18.5 oz)
Weight of 10 ft of brass rod (separate): (37.0 oz)
Buoyancy 8.5 oz