The Paddle Type Flow Switch is installable in tubes 1" and larger without the use of diaphragms, sealing bellows, or O-rings. These units, made of polysulfone, are almost maintenance free. The pressure drop across the instrument is less than 1.45PSI and independent of the pipe diameter. Operation of the unit is clearly visible through the polysulfone housing. They are available with either a normally open or a normally closed contact. Installation is extraordinarily simple. Simply insert the unit in a standard T, or a reducing T, sealed with PTFE tape. Allow for a straight pipe run of at least 3-times the pipe diameter on either side of the T to avoid turbulence.
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A:The switch is rated for 250 V max at 40VA and 2.0A maximum. For 24 VDC the limiting factor is the VA rating of 40; the DC current must be limited to 1.67A or less.
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