Mô tả sản phẩm: Công tắc áp suất Potter ADPS-300
Listings/Approvals
UL Standard 508 Guide (NKPZ) and CSA Standard C22.2 No. 14-M Class (321106) for Pressure Operated Industrial Control Equipment.
UL Standard 873 Guide (XAPX) and CSA Standard C22.2 No. 24 Class (481302) for Temperature Indicating and Regulating Equipment.
CE Marked
Ambient/Media Temperature Range
-4°F to 180°F (-20°C to 82°C)
Construction
NEMA Type 4X enclosure for indoor or outdoor use.
(To maintain 4X rating, use appropriate Type 4 conduit hub.)
Forged brass or 316 S.S. pressure connections
Aluminum Diecast base with Polymer enclosure
Beryllium Copper diaphragm (Stainless steel isolator diaphragm included for protection of beryllium copper diaphragm on models with stainless steel pressure connection.) • Nitrile Pressure Sealing O-ring
Switch Contact
Adjustable Operating Range
25-300 PSIG
Minimum Deadband
12 PSIG
Proof Pressure
400 PSIG
Factory Setting
90/60 PSIG
Snap-action SPDT (Form C) 15 Amps at 125/250/480 VAC* 1/8 HP at 125 VAC
1/4 HP at 250 VAC
Direct control of motors with HP ratings greater than those shown could damage the ADPS switch, resulting in sprinkler system damage and unintentional water flow. The installation of a pressure relief valve set at or below the systems maximum operating pressure is recommended.
Description
The Model ADPS is an Adjustable Deadband Pressure Switch with independent set and reset points which are adjustable throughout
the entire operating range of the switch. The minimum deadband (minimum span between set and reset points) may be obtained at any point in the operating range of the switch. A change in pressure greater than the high setting will reposition the switch mechanism to open or close a single snap-action electrical switch.
(1) Ø.875 HOLE FOR 12"CONDUIT CONNECTION
5.41
4.47
1.33
4.65
3.38
.94
This control device is designed for use as an operating control
in applications sensing air, water, or any fluid not harmful to the pressure connection, diaphragm or nitrile pressure-sealing o-ring. The instances where an operating control would result in personal injury and/or loss of property, it is the responsibility of the installer to add devices (safety, limit controls) that protect against, or systems (alarm, supervisory systems) that warn of control failure.
This device is not intended for applications in explosive environments or use with hazardous fluids.
Mounting and Installation
The Model ADPS is typically mounted in an upright position on a flat surface by two 1/4" screws through the mounting flanges on the base or by two 1/4-20 screws into the back of the base. See Fig. 1 for mounting dimensions. Locate the switch where vibration, shock, and ambient temperature fluctuations are minimal. To avoid damage to the switch, always hold a wrench on the pressure connection hex when tightening pressure connections. Never tighten the pressure connection by turning the switch housing into the fitting.
DWG. #1080-1
Fig. 2
Wiring
(2) 1 4-20 x .50 DEEP THREADED HOLES FOR BACK MOUNTING OPTION
(2) Ø.266 MOUNTING THRU HOLES FOR 1 4" SCREWS
Potter Electric Signal Company, LLC • 2081 Craig Road, St. Louis, MO, 63146-4161 • Phone: 800-325-3936/Canada 888-882-1833 • www.pottersignal.com
PRINTED IN USA MFG.#5401060 - REV K PAGE 1 OF 2 5/08
* Non-inductive loads only
Fig. 1
N.C.
N.O. COM.
N.C. N.O.
COM.
SWITCH ACTION ON HIGH PRESSURE (OPERATING POINT)
DWG# 1060-2 N.C.
N.C. N.O.
COM.
N.O. COM.
2.25
.88
ADPS
ADJUSTABLE DEADBAND PRESSURE SWITCH
1.66
Use properly rated temperature supply wire for the anticipated service temperature. Make all electrical connections in accordance with the National Electrical Code and local regulations. A wiring check may be performed by manually actuating the switch actuator on the side of the snap-action switch inside the enclosure. (See Fig. 3)
3.26
Do not loosen or remove the two (2) screws that secure the switch to the switch mounting bracket.
SWITCH ACTION ON LOW PRESSURE (RESET POINT)