Specifications(PDF)
Welded stainless steel Bourdon tubesreduce chance of leakage, (even in the event of fire), in Model BB DifferentialPressure Switches. Units are ideal for checking differential pressure (head)across high pressure pumps and filters. Hermetically sealed mercury wettedcontacts help ensure reliable operations. Extra sensitive (fixed deadband) unitsare available on special order, as are weatherproof and explosion-proofenclosures
Wetted Materials:403 SS Bourdon tube. 316 SS optional.Temperature Limits: -10 to 180°F (-23 to82°C).Pressure Limit: Maximum pressure of theoperating range.Enclosure Rating: General purpose.Weatherproof and explosion-proof optional.Switch Type: See Ordering page.Electrical Rating: See Ordering page.Electrical Connections: Screw type.Conduit Connection: 7/8″ (22.23 mm)hole for 1/2″ (12.7 mm) conduit hub.Process Connection: 1/4″ male NPT .1/2″ male NPT on ranges 15S and 16S.Mounting Orientation: Vertical. VibrationFree.Set Point Adjustment: Thumbwheel screw.Weight: 4 lb (1.8 kg).Deadband: See Ordering page.Agency Approval: CSA.
| EXAMPLE | BB | 523 | 2 | 6S | BB-523-2-6S Differential PressureControl, 403 SS Bourdon tubes, adjustable deadband, automatic reset, SPSTmagnetic mercury switch, adjustable range 0-40 psid, operating range 5-100psig, flanged back | ||
| CONSTRUCTION | BB | General purpose enclosure, NEMA-1 (standard) | CSA | ||||
| HOUSING OPTIONS | W | Weatherproof enclosure, NEMA-3S, 4, 4X | CSA | ||||
| E | Explosion-proof enclosure, NEMA 7, 9 – ClassI Group C & D, Class II Group E, F & G. | CSA | |||||
| CIRCUIT (SWITCHING) OPTIONS | 2_ _ | 2 | SPST magnetic mercury switch, opens ondifferential pressure increase. Fixed deadband. Rated 0.3A at 120 VAC,0.15A at 240 VAC | CSA | |||
| 2_ _ | 3 | SPST magnetic mercury switch, closes ondifferential pressure increase. Fixed deadband. Rated 0.3 at 120 VAC, 0.15at 240 VAC | CSA | ||||
| 4_ _ | 4122 | 2 stage: 2 each SPST magnetic mercuryswitches, 1 each opens on differential pressure increase, 1 each opens onfurther increase. Rated 0.3 at 120 VAC, 0.15 at 240 VAC | CSA | ||||
| 4_ _ | 4129 | 2 stage: 2 each SPST magnetic mercuryswitches, 1 each closes on differential pressure increase, 1 each closeson further increase. Rated 0.3 at 120 VAC, 0.15 at 240 VAC | CSA | ||||
| 4_ _ | 4132 | 2 stage: 2 each SPST magnetic mercuryswitches, 1 each closes on differential pressure increase, 1 each closeson differential pressure decrease. Both open mid range. Rated 0.3 at 120VAC, 0.15 at 240 VAC | CSA | ||||
| 4_ _ | 4123 | 2 stage: 2 each SPST magnetic mercuryswitches, 1 each opens on differential pressure increase, 1 each opens ondifferential pressure decrease. Both close mid range. Rated 0.3 at 120 VAC,0.15 at 240 VAC | CSA | ||||
| 5_ _ | 2 | SPST magnetic mercury switch, opens ondifferential pressure increase. Adjustable deadband. Rated 5A at 120 VAC,2.5A at 240 VAC, 2.5A at 120VDC, 1A at 240 VDC | CSA | ||||
| 5_ _ | 3 | SPST magnetic mercury switch, closes ondifferential pressure increase. Adjustable deadband. Rated 5A at 120 VAC,2.5A at 240 VAC, 2.5A at 120VDC, 1A at 240 VDC | CSA | ||||
| BOURDON TUBE MATERIALS | 2_ | Type 403 stainless steel Bourdon tubes | CSA | ||||
| 4_ | Type 316 stainless steel Bourdon tubes | CSA | |||||
| MOUNTING | 3 | Flanged back | CSA | ||||
| ADJUSTABLE DIFFERENTIAL PRESSURE RANGES OPERATING PRESSURE RANGES Maximum pressure not to exceed |
25S | Adjustable range 0-40 psid, operating range30″ Hg vac – 60 psig, 403SS Bourdon tube | CSA | ||||
| 6S | Adjustable range 0-40 psid, operating range5-100 psig, 403SS Bourdon tube | CSA | |||||
| 8S | Adjustable range 0-120 psid, operating range10-200 psig, 403SS Bourdon tube | CSA | |||||
| 9S | Adjustable range 0-180 psid, operating range10-300 psig, 403SS Bourdon tube | CSA | |||||
| 10S | Adjustable range 0-360 psid, operating range25-600 psig, 403SS Bourdon tube | CSA | |||||
| 11S | Adjustable range 0-600 psid, operating range50-1000 psig, 403SS Bourdon tube | CSA | |||||
| 12S | Adjustable range 0-900 psid, operating range100-1500 psig, 403SS Bourdon tube | CSA | |||||
| 13S | Adjustable range 0-1500 psid, operatingrange 300-2500 psig, 403SS Bourdon tube | CSA | |||||
| 15S | Adjustable range 0-3000 psid, operatingrange 500-5000 psig, 403SS Bourdon tube | CSA | |||||
| 16S | Adjustable range 0-5000 psid, operatingrange 1000-8000 psig, 403SS Bourdon tube | CSA | |||||
| 23E | Adjustable range 0-38 psid, operating range5-75 psig, 316SS Bourdon tube | ||||||
| 6E | Adjustable range 0-36 psid, operating range10-100 psig, 316SS Bourdon tube | ||||||
| 24E | Adjustable range 0-55 psid, operating range10-150 psig, 316SS Bourdon tube | ||||||
| 9E | Adjustable range 0-200 psid, operating range10-300 psig, 316SS Bourdon tube | ||||||
| 21E | Adjustable range 0-275 psid, operating range30-400 psig, 316SS Bourdon tube | ||||||
| 22E | Adjustable range 0-450 psid, operating range75-800 psig, 316SS Bourdon tube | ||||||
| 11E | Adjustable range 0-500 psid, operating range100-1000 psig, 316SS Bourdon tube | ||||||
| 13E | Adjustable range 0-925 psid, operating range200-2500 psig, 316SS Bourdon tube |
