The Photohelic® Pressure Switch/Gages On-Demand Cleaning Controller provides a simple, complete dust collection control all in one enclosure. The Photohelic® controller combined with the DCT500DC Timer Control provides a timed energization of solenoid valves when the differential pressure indicates filter cleaning is necessary. The operator can easily set the cleaning initiation and duration by adjusting the 2 set point knobs on the front face of the Photohelic® controller. Solenoid valve sequencing is also easily set via two potentiometers inside the enclosure on the timer board. A three position switch on the front of the enclosure offers cleaning versatility by allowing the user to select between on demand or continuous manual cleaning. The Photohelic® controller is pneumatically connected with tubing to fittings on the enclosure. All that is required for start-up is connection of tubing from the process to the external fittings on the enclosure, and wiring the solenoid valves to the timer board.
NIST CALIBRATION available in Product Configurator.
DCT500DC SPECIFICATIONS Output Channels: 4, 6, & 10 channels. Power Requirements: 10 to 35 VDC, 0.6 watt max. no load power. 120 Volt powered timer board also available. Solenoid Supply: 3A max. per channel. Fuse: Type 3 AG, 3A @ 250 VAC. Temperature Limits: -40 to 176°F (-40 to 80°C). Storage Temperature Limits: -40 to 176°F (-40 to 80°C). On Time: 50 msec to 500 msec. On Time Accuracy: ±5% of setting. Off Time: 1 second to 200 seconds. Off Time Accuracy: ±5% of setting. Weight: 9 oz (255 g).
PHOTOHELIC® SPECIFICATIONS GAGE SPECIFICATIONS Service: Air and non-combustible, compatible gases. Wetted Materials: Consult factory. Accuracy: ±2% of full scale. Pressure Limits: -20" 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). Temperature Limits: 20 to 120°F (-6.67 to 48.9°C). Process Connections: 1/8" female NPT (duplicated side and back). Size: 4" (101.6 mm) dial face, 5" (127 mm) O.D. x 3-1/8" (79.38 mm). Weight: 1.8 lb (816 g).
SWITCH SPECIFICATIONS 3000MR Switch Type: Each setpoint has a 1 Form C relay (SPDT). Relay Contacts: (resistive load) 1 Form C rated 1.0A @ 30 VDC, 0.3A @ 110 VDC or 0.5A @ 125 VAC. Gold over clad silver - suitable for dry circuits. Electrical Connections: 18" (46 cm) cable assembly with 8 conductors. Optional lengths to 100' (30.5 m). Power Requirements: 24 VDC, regulated ±10%. Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations. Set Point Adjustment: Adjustable knobs on face.