Dimensions
3/8” NPT Ports
Quick Disconnect Ports
1” (25 mm)
11/16” Hex.
4”
(102 mm)
11/16” Hex.
4.22”
(107 mm)
1” (25 mm)
.75” (19 mm)
Across Flats
.43” (11 mm)
Dia. Typ.
O-Ring Typ.
DWYER INSTRUMENTS,INC.
P.O.BOX 373 MICHIGAN CITY, INDIANA 46361, U.S.A.
Phone: 219/879-8000 www.dwyer-inst.com
Lit-By Fax: 888/891-4963
Important Points!
Product must be maintained and installed in strict accordance
with the National Electrical Code and Dwyer product catalog
and instruction bulletin. Failure to observe this warning could
result in serious injuries or damages.
For hazardous area applications involving such things as (but
not limited to) ignitable mixtures, combustible dust and
flammable materials, use an appropriate explosion-proof
enclosure or intrinsically safe interface device.
The pressure and temperature limitations shown on the
individual catalog pages and drawings for the specified flow
switches must not be exceeded. These pressures and
temperatures take into consideration possible system surge
pressures/temperatures and their frequencies.
Selection of materials for compatibility with the media is critical
to the life and operation of Dwyer products. Take care in the
proper selection of materials of construction, particularly wetted
materials.
Life expectancy of switch contacts varies with applications.
Contact Dwyer if life cycle testing is required.
Ambient temperature changes do affect switch set points,
since the specific gravity of a liquid can vary with temperature.
Dwyer Products have been designed to resist shock and
vibration; however, shock and vibration should be minimized.
Filter liquid media containing particulate and/or debris to
ensure the proper operation of our products.
Electrical entries and mounting points in an enclosed tank
may require liquid/vapor sealing.
Dwyer Products must not be field-repaired.
Physical damage sustained by the product may render it
unserviceable.
MAINTENANCE/REPAIR
Regular maintenance of the total system is recommended to assure sustained optimum performance. These devices are not
field repairable and should be returned to the factory if recalibration or other service is required. After first obtaining a Returned
Goods Authorization (RGA) number, send the unit freight prepaid to the following. Please include a clear description of the
problem plus any application information available.
Dwyer Instruments, Inc.
Attn: Repair Department
102 Highway 212
Michigan City, IN 46360
(2 pages)
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