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S71 Temperature Switch
Brand: Delta Mobrey
Features
- Weatherproof and Flameproof models ATEX and NEC 500
- 316 stainless steel capillary and bulb
- Ranges available up to 160° to 260° C (320° to 500° F)
- Maximum working temperature up to 270° C (518° F)
- Field set point adjustment against a reference scale
- Hermetically sealed microswitch options
- Optional gold alloy contacts
- Terminal block for easy field wiring
- Safety vented design as standard
Specifications
Brand
Adjustment Type
- Field Adjustable Set Point
Ambient Temperature Range
- -25° to 60° C (-13° to 140° F)
Applications
- Chemical Industry
- OEM Applications
- Oil & Gas Applications
- Petrochemical
- Power
- Refining
Approvals & Certifications
- UKAS
- SIL 2 Certification
- ATEX Directive 2014/34/EU
- BSI Kitemark
- CE
- CSA (C,US) Class I, Groups C, D, Class II, Groups E, F, G
- Ex II 2 GD
- ISO 9001
- LVD 2014/35/EU
- NEC 500
- PED 97/23/EC
Bulb Material
- 316 Stainless Steel
Cable Entry
- 1/2” NPT Female
- 3/4” NPT Female
- M20 x 1.5
Capillary Length
- 6 feet (1.86 metres)
Capillary Material
- 316 Stainless Steel
Conduit Connection
- 3/4” Conduit
Cover Material
- PVC Covered for Armoured Capillary
Diameter
- Bulb: 0.37” (9.5 mm)
Electrical - Free Leads
- 14 AWG, 2.5 mm²
Electrical Connectors
- Terminal Block
Electrical Contacts
- Gold Alloy Contacts for Low Voltage Switching
- Gold-Plated Silver
Electrical Rating
- CSA & IEC: 1 A at 125 Vac
- CSA: 1 A at 30 Vac/dc
- CSA: 100 mA at 30 Vdc
- CSA: 2 A at 30 Vdc
- CSA: 5 A at 110/250 Vac
- CSA: 5 A at 30 Vdc
- IEC 947-5-1 / EN 60947-5-1: 0.22 / 0.1 A at 125/250 Vdc
- IEC 947-5-1 / EN 60947-5-1: 0.3 A at 120 Vac
- IEC 947-5-1 / EN 60947-5-1: 0.6 / 0.3 A at 120/240 Vac
Enclosure Finish
- Light Gray Epoxy Resin Paint
Enclosure, Body Material
- Flameproof & Weatherproof: Austenitic Stainless Steel
- Flameproof: Die Cast Aluminum-silicon Alloy
- Weatherproof: Die Cast Zinc Alloy
Environmental Protection
- Flameproof Ex d
- IP66
- NEMA 4X
- NEMA 7
- NEMA 9
- Weatherproof
Insertion 'U' Length
- 7.5” (190 mm)
Length
- Sensing Bulb: 2.95” (75 mm)
Materials of Construction
- Mounting Bracket: Stainless Steel
- Thermal System: 300 Series Austenitic Stainless Steel with Capillary
Mounting
- 2” Pipe Mounting Bracket
Mounting Position
- Vertical
NPT Connection
- 1/2”-14 Male NPT
- 3/8” NPT Male
O-Ring Material
- Fluorosilicone
- Nitrile
Operating Pressure
- Maximum
Operating Temperature
- 0° to 270° C (32° to 518° F) - Max.
Process Temperature
- 0° to 60° C (32° to 140° F) - Max.
Repeatability
- Set Point Repeatability: ± 1 % of Span at 20° C (68° F) Ambient
Sensor, Probe Length
- Probe: 9” (228 mm)
Sensor, Probe Material
- 316 Stainless Steel
Service
- Oxygen Service
Set Point - Decreasing
- -40° to 260° C (-40° to 500° F)
Set Point - Increasing
- -40° to 260° C (-40° to 500° F)
Stem Length
- Rigid Stem: 8.5” (216 mm)
- Semi-Rigid Stem: 10 to 20” (250 to 500 mm)
Storage Temperature
- -25° to 60° C (-13° to 140° F)
Switch Type
- DPDT Hermetically Sealed & Snap-Action Microswitch
- SPDT Hermetically Sealed & Snap-Action Microswitch
Thermowell
- 316 Stainless Steel
Voltage
- Impulse to Withstand Voltage Across Contacts: 0.5 kV
- Impulse to Withstand Voltage Across Contacts: 0.8 kV
- Insulation Voltage: 125 V
- Insulation Voltage: 250 V
- Withstand Voltage: 1.2 kV - Micro Switch
- Withstand Voltage: 2 kV between Live Parts & Earth/Ground
- Withstand Voltage: 500 V between Open Contacts
- Oil & Gas
- Chemical
- Petrochemical
- Refining
- Power
- OEM