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L/LP-Series NEMA 4 Pressure Switch
Brand: Ashcroft IncThe Ashcroft® L (LP) Pressure Switch is designed for use on applications requiring high reliability, safety and accuracy.
Its straight forward design allows for easy field installation and calibration. The LP pressure switch is ideal for pressure control, safety shutdown or alarm operations.
Specifications
- Accuracy: ±1.00% full scale
- NEMA 4X (IP65) aluminum enclosure
- Single or dual set points
- Wide selection of switch elements and wetted materials
- Multiple process connections available
- Adjustable setpoints from 15%-100% of range
- Fixed or adjustable deadbands
Specifications
Brand
Adjustment Type
- Differential Pressure Control, Single Set Point, Adjustable Deadband
- Differential Pressure Control, Single Set Point, Fixed Deadband
- Differential Pressure Control, Two Independently Adjustable Set Points, Fixed Deadband
- Factory Set (Pre-Set)
- Field Adjustable
- Pressure Control, Single Set Point, Adjustable Deadband
- Pressure Control, Single Set Point, Fixed Deadband
- Pressure Control, Two Independently Adjustable Set Points, Fixed Deadband
Approvals & Certifications
- CE
- CSA
- FM
- UL
Burst Pressure
- bar: 2.41 to 965.26
- kPa: 241 to 96,526
- psig: 35 to 14,000
Burst Pressure - Compound
- bar: 27.58
- kPa: 2,758
- psig: 400
Burst Pressure - Vacuum
- bar: 27.58
- kPa: 2,758
- psig: 400
Compound Pressure
- 30” Hg (-760 mmHg) at 15 psi
Deadband, Approximate
- bar: 0.03 to 179.26
- bar: 0.03 to 24.82
- kPa: 3.44 to 2,482
- kPa: 3.45 to 17,926
- psid: 0.5 to 360
- psig: 0.50 to 2,600
Deadband, Approximate - Compound
- bar: 0.03 to 1.72
- kPa: 6.98 to 172.36
- psig: 1 to 25
Electrical Connectors
- 3/4” Sealed Conduit Connection with 16” Lead Wires
- 3/4” to 1/2” Conduit Reducing Bushing
- Terminal Block
Electrical Rating
- 1/8 hp at 125 Vac/Vdc
- 10 A at 125 Vac/Vdc
- 11 A, 125/250 Vac, 5 A, 30 Vdc
- 15 A, 125/250 Vac
- 15 A, 125/250/480 Vac, 1/2 A, 125 Vdc, 1/4 A, 250 Vdc
- 6 A at 30 Vdc
Element
- Ammonia Service
- Dual Elements
- General-purpose
- Heavy Duty AC
- Heavy Duty DC
- Hermetic Seal Switch, General-purpose
- Hermetic Seal Switch, Narrow Deadband
- Hermetic Seal, Gold Contacts
- High Temperature 149° C (300° F)
- Low Level (Gold Contacts)
- Narrow Deadband
- Sealed Environment Proof
Enclosure, Body Material
- Die Cast Aluminum
Environmental Protection
- IP65
- IP66
- NEMA 4, 4X / IP65, 66
- NEMA 4X
Mounting
- Top Mounting
NPT Connection
- 1/2” NPT Female
- 1/2” NPT Male
- 1/4” NPT Female
- 1/4” NPT Female & 1/2” NPT Male Combination
O-Ring Material
- Buna-N
- Monel
- Stainless Steel
- Teflon
- Viton
Options
- Chained Cover
- Cleaned for Oxygen
- Fungus Proofing
- Stainless Steel Tags
Pressure Range
- bar: 0.89 to 206.84
- kPa: 7.45 to 20,684
- psig: 1.08 to 3,000
Pressure Type
- Differential
- Gauge
- Vacuum
Proof Pressure
- bar: 1.38 to 827
- bar: 1.49 to 551.58
- kPa: 137 to 82,737
- kPa: 149 to 55,158
- psid: 21.6 to 8,000
- psig: 20 to 12,000
Proof Pressure - Compound
- bar: 17.24
- kPa: 1,723
- psig: 250
Proof Pressure - Vacuum
- bar: 17.24
- kPa: 1,723
- psig: 250
Repeatability
- ± 1 % of Operating Range
Set Point - Decreasing
- -30” Hg to 3,000 psig
- bar: 0 to 206.8
- Inches Hg: -30 to 0
- Inches WC: 30 to 150
- kPa: 0 to 20,680
- psig: 0 to 3,000
Set Point - Increasing
- -30” Hg to 3,000 psig
- bar: 0 to 206.8
- Inches Hg: -30 to 0
- Inches WC: 30 to 150
- kPa: 0 to 20,680
- psig: 0 to 3,000
Static Pressure
- bar: 0.37 to 68.95
- kPa: 37.23 to 6,894
- psid: 5.4 to 1,000
Switch Type
- 2 SPDT
- DPDT
- SPDT
System Pressure
- bar: -1.02 to 551.58
- Inches Hg: -30 to 0
- Inches WC: 30 to 150
- kPa: -100 to 82,737
- psig: -14.73 to 12,000
Vacuum Pressure
- -30” Hg at -14.73 psig
- bar: -1.02
- kPa: -100
- Compressors
- Pumps
- Paint Spraying Equipment
- Boilers & Burners
- Turbines
- Reverse Osmosis Systems
- Filters
- Presses
