Instruction Manual

1 . 15
WET vs DRY Pulser
This flow meter exists in 2 generations:
1st generation, manufactured from 2007 through 2009
 Has pulser (#10) in SS housing, exposed to the operating fluid.
 Pulser is sealed with an O-ring (#16),
held in place by a heavy retainer (#11) with a LARGE center hole.
 Meter must be isolated & drained if pulser must be inspected.
2nd generation, introduced gradually; only type as of Jan 1st, 2010
 Pulser (#10) without housing, sensing magnet position through the wall.
 No O-ring, held in place by a thin retainer (#11) with SMALL center hole.
 Pulser can be inspected without draining the flow meter.
Make sure to identify which type you are working on!
WET
DRY
Identifies : WET DRY
Retainer thickness : 0.105” (2.67 mm) 0.020” (0.51 mm)
Hole diameter : 7/8” (21 mm) 19/32” (15 mm)
Part No. : ST9250 ST9250-1