3000MR or 3000MRS Series in Flame-Proof Enclosures
Approved Photohelic® Switch/Gages with 24 VDC Power combine the functions of a precise, highly repeatable differential pressure switch with a large analog pressure gage.
Features
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Gage reading unaffected by switch operation and will continue to read pressure even during power loss
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Zero and range adjustments outside of gage means no disassembly in normal service
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Solid-state design allows for switching in high cycle rate applications without degradation
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Flame-proof ATEX enclosure with optional glass window and aluminum housing protects the device in hazardous areas while giving local visibility to process pressure and set point status
Product Applications
Specifications
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Service: Air and non-combustible, compatible gases.
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Wetted Materials: Consult factory.
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Accuracy: ±2% of FS at 70°F (21.1°C). ±3% on -0, -60 Pa and ±4% on -00 models.
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Pressure Limits: -20 in Hg to 25 psig (-0.677 bar to 1.72 bar). MP option: 35 psig (2.41 bar), HP option: 80 psig (5.52 bar).
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Temperature Limits: 20 to 120°F. (-6.67 to 48.9°C). Option LT low temperature to -20°F (28.8°C); (Note: Product temperature limits differ from case).
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Power Requirements: 24 VDC, regulated ±10%.
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Electrical Wiring: Screw terminals.
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Mounting Orientation: Diaphragm in vertical position.
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Dial Size: 4" (101.6 mm).
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Set Point Adjustment: Adjustable knobs on face behind enclosure cover. Follow instructions and safety warnings to open cover.
SWITCH SPECIFICATIONS (3000MR)
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Switch Type: Each setpoint has 1 Form C relay (SPDT).
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Relay Contacts: (resistive load) 1 Form C rated 1.0 A @ 30 VDC, 0.3 A @ 110 VDC or 0.5 A @ 125 VAC. Gold over clad silver - suitable for dry circuits.
SWITCH SPECIFICATIONS
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Switch Type: Each setpoint has a solid state relay.
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Switching Voltage: 20 to 280 VAC (47 to 63 Hz).
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Switching Current: 1.0 amp (AC) max., 0.01 mA (AC) min., (2) SPST NO.
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Enclosure Rating: IP66. IP65 with option OPV, overpressure relief valve.
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Housing Material: Aluminum.
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Finishing: Texture epoxy coat RAL7038.
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Pressure Connections: 1/8" NPT female brass (SS optional). In presence of acetylene it is necessary to use SS.
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Electrical Connections: Two 1/2" FNPT. Cable gland not included.
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Weight: 12.5 lb (5.7 kg).
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ATEX Certificate: BVI 14ATEX0072.
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Agency Approvals: ATEX Compliant CE 1370 Ex II 2G Ex d IIC T6 Gb / II 2D Ex tb IIIC T85°C Db, -60°C=Tamb=+60°C IECEx Compliant: Ex d IIC T6 Gb / Ex tb IIIC T85°C Db
