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Donaldson Company, Inc.
Magnehelic
®
Gauge
The Magnehelic is a differential pressure gauge used to measure the pressure difference between the clean-air and dirty-air
plenums and provides a visual display of filter change requirements. The high-pressure tap is located in the dirty-air plenum and
the low-pressure tap is located in the clean-air plenum.
1. Choose a convenient, accessible location on or near the collector for mounting that provides the best visual advantage.
2. Plug the pressure ports on the back of the gauge using two, 1/8-in NPT pipe plugs supplied. Install two, 1/8-in NPT male
adapters supplied with the gauge into the high- and low-pressure ports on the side of the gauges.
3. Attach the mounting bracket using three, #6-32 x 1/4-in screws supplied.
4. Mount the gauge and bracket assembly to the supporting structure using two, self-drilling screws.
5. Thirty-five feet of plastic tubing is supplied and must be cut in two sections. Connect one section of tubing from the gauge’s
high-pressure port to the pressure fitting located in the dirty-air plenum. Connect remaining tubing from the gauge’s low-
pressure port to the fitting in the clean-air plenum. Additional tubing can be ordered from your representative.
6. Zero and maintain the gauge as directed in the manufacturer’s Operating and Maintenance Instructions provided.
Magnehelic Gauge Installation
clean-air plenum
pressure tap location
flat washer
coupling
support structure
mounting surface
mounting screws
mounting bracket
static pressure tee
90° elbow
adapter
adapter
flat washer
dirty-air plenum pressure tap location
adapter
90° male elbow
two, self-drilling screws
two, pipe plugs
plastic tubing
two adapters
low-pressure port
high-pressure port
Magnehelic gauge
90° male elbow
Содержание RP Baghouse
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