» Sản phẩm » Thiết bị đo » Công tắc áp suất » Công tắc áp suất - Series DH3

Công tắc áp suất - Series DH3

 Series DH3
Digihelic® Differential Pressure Controller
Digihelic® Controller in Photohelic® Gage, Square Root Output for Flow


The Series DH3 Digihelic® Differential Pressure Controller is a 3 in 1 instrument possessing a digital display gage, control relay switches, and a transmitter with current output all packed in the popular Photohelic® gage style housing. Combining these 3 features allows the reduction of several instruments with one product, saving inventory, installation time and money. The Digihelic® controller is the ideal instrument for pressure, velocity and flow applications, achieving a 1% full scale accuracy on ranges down to the extremely low 0.25" w.c. to 2.5" w.c. full scale. Ranges of 5" w.c. and greater maintain 0.5% F.S. accuracy. Bi-directional ranges are also available. 

The Series DH3 Digihelic® controller allows the selection of pressure, velocity or volumetric flow operation in several commonly used engineering units. 2 SPDT control relays with adjustable deadbands are provided along with a scalable 4-20 mA process output. 

Programming is easy using the menu key to access 5 simplified menus which provide access to: security level; selection of pressure, velocity or flow operation; selection of engineering units; K-factor for use with flow sensors; rectangular or circular duct for inputting area in flow applications; set point control or set point and alarm operation; alarm operation as a high, low or high/low alarm; automatic or manual alarm reset; alarm delay; view peak and valley process reading; digital damping for smoothing erratic process applications; scaling the 4-20 mA process output to fit your applications range and field calibration. 

Application:
• SCFM flow in ducts
• Filter status
• Static pressures in ducts or buildings
• Damper control
• Fan control

Specifications:
  • Service: Air and non-combustible, compatible gases.
  • Wetted Materials: Consult factory.
  • Housing Material: Die cast aluminum case and bezel.
  • Accuracy: < 5" w.c. (except ±2.5" w.c.): ±1%; All other ranges: ±0.5% at 77°F (25°C) including hysteresis and repeatability (after 1 hour warm-up).
  • Stability: < ±1% per year.
  • Pressure Limits: Ranges ≤ 2.5" w.c.: 25 psi; ±2.5", 5" w.c.: 5 psi; 10" w.c.: 5 psi; 25" w.c.: 5 psi; 50" w.c.: 5 psi; 100" w.c.: 9 psi.
  • Temperature Limits: 32 to 140°F (0 to 60°C).
  • Compensated Temperature Limits: 32 to 140°F (0 to 60°C).
  • Thermal Effects: 0.020%/°F (0.036/°C) from 77°F (25°C).
  • Power Requirements: 12-28 VDC, 12-28 VAC 50-400 Hz.
  • Power Consumption: 3 VA max.
  • Output Signal: 4-20 mA DC into 900 ohms max.
  • Zero & Span Adjustments: Accessible via menus.
  • Response Time: 250 ms (damping set to 1).
  • Display: Backlit 4 digit LCD 0.4" height LED indicators for set point and alarm status.
  • Electrical Connections: 15 pin male high density D-Sub connection. 18" (46 cm) cable with 10 conductors included. 4' and 10' cables available.
  • Process Connections: 1/8" female NPT. Side or back connections.
  • Mounting Orientation: Mount unit in vertical plane.
  • Size: 5" (127 mm) O.D. x 3-1/8" (79.38 mm).
  • Weight: 1.75 lb (794 g).
  • Agency Approvals: CE.

SWITCH SPECIFICATIONS
  • Switch Type: 2 SPDT relays.
  • Electrical Rating: 1 amp @ 30 VAC/VDC.
  • Set Point Adjustment: Adjustable via keypad on face.

Công tắc áp suất - Series DH3
Đồng hồ đo chênh áp Công tắc áp suất Cảm biến chênh áp Đồng hồ đo áp suất KTS Cảm biến áp suất Công tắc dòng chảy Cảm biến nhiệt độ Cảm biến nhiệt độ và độ ẩm Air Quality Damper Actuators Testing Equipment and Data Logger Thiết bị đo mức Thermocouple PT100 Đồng hồ đo nhiệt độ GB Đồng hồ đo áp suất GB-France Đo nhiệt độ Đo chênh áp Đo áp suất Phụ kiện
Tin tức

Liên hệ