2T22 and 3T22: Difference between revisions

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== General ==
== General ==
The 2T22 was an omnidirectional siren produced by [[Federal Signal Corporation]]. The design features a single motor in the middle with a twelve-port rotor/stator set on top and a 10-port set on bottom. Both rotors measured 14 inches in diameter, and are identical to rotors used on the model 3 and 2001. A similar model featuring coding dampers was sold as the 3T22.
The 2/3T22 was an omnidirectional siren produced by [[Federal Signal Corporation]]. The design features a single motor in the middle with a twelve-port rotor/stator set on top and a 10-port set on bottom. Both rotors measured 14 inches in diameter, and are identical to rotors used on the model 3 and 2001. The 3T22 model featured solenoids attached to the top and bottom intakes to produce a third signal. The 2T22 lacked the additional signal option.


Both models were available in single and three phase versions. Three phase models used either a GE (early) or Marathon 10 horsepower motor. The only motor used on the single phase model was the Northwestern Electric 7 1/2 horsepower repulsion-induction motor.
Both models were available in single and three phase versions. Three phase models used either a GE (early) or Marathon 10 horsepower motor. The only motor used on the single phase model was the Northwestern Electric 7 1/2 horsepower repulsion-induction motor.


A fully assembled siren weighs close to 700 pounds, including the pole mount bracket.
A fully assembled siren weighs close to 700 pounds, including the pole mount bracket.
== Difference ==
The difference between the 2T22 and 3T22 is the fact a 2T22 does not support hi-lo(fire) signals, so they do not have solenoid boxes, however, 3T22's have solenoid boxes by the top intake and bottom set of horns.
[[Category:Federal Signal Corporation]][[Category:Omnidirectional Sirens]][[Category:Dual Toned Sirens]][[Category:Sirens]][[Category:Electromechanical Sirens]]
[[Category:Federal Signal Corporation]][[Category:Omnidirectional Sirens]][[Category:Dual Toned Sirens]][[Category:Sirens]][[Category:Electromechanical Sirens]]

Revision as of 04:51, 26 August 2017

2T22 and 3T22
3T22
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Inactive 3T22 in Wormleysburg, Pennsylvania.
Company Federal Signal Corporation
Type Electromechanical
Sound output 113 dBc at 100 feet
Horsepower 7.5 - 10
Documentation Manual

General

The 2/3T22 was an omnidirectional siren produced by Federal Signal Corporation. The design features a single motor in the middle with a twelve-port rotor/stator set on top and a 10-port set on bottom. Both rotors measured 14 inches in diameter, and are identical to rotors used on the model 3 and 2001. The 3T22 model featured solenoids attached to the top and bottom intakes to produce a third signal. The 2T22 lacked the additional signal option.

Both models were available in single and three phase versions. Three phase models used either a GE (early) or Marathon 10 horsepower motor. The only motor used on the single phase model was the Northwestern Electric 7 1/2 horsepower repulsion-induction motor.

A fully assembled siren weighs close to 700 pounds, including the pole mount bracket.