Explosion-Proof Bin Level Switches Model 501
Low cost, explosion-proof and weatherproof.
Model 501 Bin Level Switches provide reliable response to the presence or absence of dry media within bins and hoppers. U.L. and C.S.A. Listed integral explosion-proof and weatherproof housing is compact, lightweight and rated NEMA 7 & 9 for Class I, Groups C and D, Glass II, Groups E, F and G, and Class III hazardous locations. Three adjustable models can be set from a sensitive .05 pounds of force up to 6.0 pounds. Unique cantilevered diaphragm assembly responds to force from any direction and allows installation in any position. Housing design accepts reference pressure on the back side of the sensing diaphragm for applications on pressurized containers.
| Temperature Limits: | (-20°F to 140°F) |
|---|---|
| Rated Pressure: | 10 psig maximum applied to both sides of diaphragm simultaneously. CAUTION: Do not pressurize low pressure side only |
| Pressure Connection: | 1/8" NPT female - low pressure only |
| Electric Rating: | 15 amps, 125, 250, 480 volts, 60 Hz, AC resistive. 1/8 H.P. @ 125 volts, ¼ H.P. @ 250 volts, 60 Hz. AC |
| Wiring Connections: | 3 screw type; common, normally open and normally closed |
| Conduit Connection: | ½" NPT, female |
| Set Point Adjustment: | Screw type on top |
| Housing: | Anodized cast aluminum |
| Diaphragm: | Neoprene on Nylon |
| Calibration Spring: | Stainless Steel |
| Installation: | Mount in any position |
| Weight: | 3 lbs., 14 oz. (1.758 kb) |
| Model Number | Range, Lbs/Force |
|---|---|
| 501-1 501-2 501-7 |
.05-.45 .20-1.3 .80-6.0 |
SUGGESTED SPECIFICATIONS
Bin level switches shall be diaphragm opened with 6" diaphragm to actuate a single pole, double throw snap switch. Motion of the diaphragm shall be restrained by a calibrated spring that can be adjusted to the exact pressure at which the electrical switch will be actuated. Motion of the diaphragm shall be transmitted to the switch by means of a direct mechanical linkage. Switch(es) shall be Dwyer Instruments, Inc. Catalog No. 501-____ for the required operating range.