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117 Series Models 520 to 525 Pressure Switch
Brand: United Electric Controls Ltd
Approved for Division 2, Zone 2 hazardous and corrosive atmospheres, and with optional Zone 0 intrinsic safety compliance, the 117 Series can be used to measure vacuum, pressure, differential pressure, or temperature in a variety of applications.
The rugged, one piece enclosure features a slanted cover for wiring accessibility to the enclosed terminal block that is wired to either a SPDT or DPDT hermetically sealed microswitch. All-welded, stainless steel pressure connections and sensors provide superior corrosion resistance - NACE compliant - and fire-safe protection within the harshest environments.
The 117 Series is an ideal choice for the most demanding applications; typically steel and aluminum mills, chemical and petrochemical plants, pulp and paper mills, wastewater treatment plants, midstream and downstream oil & gas, and pharmaceutical plants.
Features- Epoxy Coated Type 4X Enclosure and Stainless Steel component parts
- Terminal Block Wiring
- Tamper-Resistant Set Point “Lock”
- Approved for Division 2, Zone 2 hazardous locations
- Optional ATEX or GOST intrinsic safety compliance for Zone 0
- Welded Stainless Steel diaphragms meet NACE MR-0175 standard
- Optional sensor material for corrosive media
- Ultra-low vacuum and pressure ranges
- Polished Stainless Steel flush mount sensors
Specifications
Adjustment Type
- Captive Clamp Screws
- Factory Set (Pre-Set)
- Set Point Adjustment
Ambient Temperature Range
- -18° to 71° C (0° to 160° F), Set Point Typically Shifts less than 1 % of Range for a 28° C (50° F) Ambient Temperature Change
Applications
- Chemical & Petrochemical
- Midstream & Downstream Oil & Gas
- Pharmaceutical Plants
- Pulp & Paper Mills
- Steel & Aluminum Mills
- Wastewater Treatment Plants
Approvals & Certifications
- ISO 9001
Approvals & Certifications
- ATEX Directive (94/9/EC) II 1 G EEx ia IIC T6 Ga Tamb: -50° to 60° C (-58° to 140° F)
- CE
- CRN
- CSA C22.2 No. 14 & 213 - File # E40857
- GOST-R 51330.0, 51330.1, 51330.10 & 51330.14
- Low Voltage Directive (LVD) 73/23/EC & 93/68/EEC
- PED: 97/23/EC
- UL (C,US) 508 & 1604, Class I, Div. 2, Grade A, B, C, D, Class II, Div. 2, Group F, G, Class III
Conduit Connection
- 1/2” NPT Female
Deadband
- Inches WC: 0.4 to 32
- psi: 0.014 to 1.155 (kPa: 0.1 to 7.96, Mbar: 1 to 79.6)
- Temperature Deadband: Typically 4 % of Range Under Laboratory Conditions (21.11° C (70° F) Ambient Circulating Bath at Rate of 0.5° F Per Minute Change)
Diaphragm Material
- 316L Stainless Steel
- Buna-N
- Kapton
- Teflon
- Viton
Electrical Connectors
- 7/8” Diameter Knockout
- 7/8” Hole to 1/2” NPT Female Watertight Conduit Fitting
Electrical Contacts
- Normally Closed
- Normally Open
- Switch Contacts Gold Flashed
Electrical Rating
- 0.5 A at 125 Vdc
- 1 A at 48 Vdc
- 11 A at 125/250 Vac Resistive
- 5 A at 28 Vdc
Enclosure Finish
- Epoxy Powder-Coated
Enclosure, Body Material
- Gasketed Die Cast Aluminum
Environmental Protection
- Intrinsically Safe
- IP66
- NEMA 4X
Fill Material
- Non-Toxic Oil Filled
Mounting
- Pipe
- Surface
NACE & NIST
- NACE MR-0175
Name Plate, Tag Material
- Anodized Aluminum
- Stainless Steel, Paper ID Tag & Wire Attachment
NPT Connection
- 1/2” NPT Female
O-Ring Material
- Buna-N
- Viton
Orifice Size
- 0.72” (18.28 mm) for Clean-Out Purposes
Overpressure & Static Pressure Limits
- Overpressure - psi: 200 (kPa: 1,379, bar: 13.8)
Pressure Type
- Gauge
Process Connection Material
- 316L Stainless Steel
- Epoxy Coated Aluminum
Proof Pressure
- psi: 400 (kPa: 2,758, bar: 27.6)
Repeatability
- Set Point Repeatability: ± 1 % of Adjustable Range
Service
- Oxygen Service Cleaning, Alcohol Cleaning to Remove Residue from the Process Connection
Set Point - Decreasing
- Inches WC: -300 to 250
- kPa: -74.5 to 62.1
- mbar: -746.7 to 622.3
- psi: -10.8 to 9
Set Point - Increasing
- Inches WC: -300 to 250
- kPa: -74.5 to 62.1
- mbar: -746.7 to 622.3
- psi: -10.8 to 9
Shock
- Set Point Repeats after 15 G, 10 millisecond Duration
Storage Temperature
- -54° to 71° C (-65° to 160° F)
Switch Type
- DPDT
- One SPDT Hermetically Sealed Snap-Action Switch
System Pressure
- bar: 13.79
- kPa: 1,379
- psi: 200
Vibration
- Set Point Repeats after 2.5 G, 5 to 500 Hz
