Description

A3000 SERIES PHOTOHELIC DIFFERENTIAL PRESSURE SWITCH

A3000 SERIES PHOTOHELIC DIFFERENTIAL PRESSURE SWITCH

Description:

A3000 series Photohelic Differential Pressure Switch / table with a reliable and durable Magnehelic design philosophy, combined with high accuracy and repeatability of gage pressure switch. You can measure and control the air or other gases compatible positive, negative or differential pressure. Standard pressure rating for 25psig (1.7bar), also choose the pressure 35psig (2.4bar) or pressure 80psig (5.5bar). 36000S single-pressure can be measured to 6000 psig (413 bar) and the pressure to 9000psig (620bar). Two DPDT switch for high / low limit control. Knob on the instrument disk can easily adjust the set point, hysteresis for each set point is less than 1 percent, narrower than the width of the pointer. Two set points can be locked using a different hysteresis, ideal for controlling fans, dampers and so on. Differential pressure gauge readings are not affected by the switch operation, even loss of power does not affect the reading. The optional scale range from 0-0.25 inches of water (0-6 mm water column) to 30psi (2.1bar).
Photohelic works

when the differential pressure between the high and low set-point change in value, to a set point, the linkage will visor obscured infrared beam fired at the limit of the transistor, the transistor so that the signal is amplified and triggered pole double-throw switch.

Characterized by the use of plastic shell to protect all electronic components and circuits. Solid-state switches and electronic components fixed in epoxy protective circuit board and terminal blocks with a flame retardant.

Specifications

GAGE SPECIFICATIONS

Service : Air and non-combustible, compatible Gases.
Wetted Materials : Consult Factory.
Accuracy : ± 2% of FS at 70 ° F (21.1 ° C) ± 3% and ± 4% on -0 -00 models on..
Pressure Limits : -20 “Hg to 25 psig (-0.677 to 1.72 Bar) MP option; 35 psig (2.41 Bar), HP option; 80 psig (5.52 Bar) A36003S – 36010S; 150 psig (10.34 Bar)…. A36020S and higher; 1.2 x full-scale pressure.
Temperature Limits : 20 to 120 ° F (48.9 ° C to -6.67) Low temperature option available…
Process Connections : 1/8 “female NPT.
Size : 4 “(101.6 mm) Dial face, 5” (127 mm) OD x 8-1 / 4 “(209.55 mm).
Weight : 4 lb (1.81 kg).

SWITCH SPECIFICATIONS

Switch Type : Each setpoint HAS 2 Form C Relays (DPDT).
Repeatability : ± 1% of FS.
Electrical Rating : 10A @ 28 VDC, 10A @ 120, 240 VAC.
Electrical Connections : Screw Terminals Use 167 ° F (75 ° C) Copper Conductors only..
Power Requirements : 120 VAC, 50/60 Hz; 240 VAC & 24 VAC power optional.
Mounting Orientation :. Diaphragm in Vertical position Orientations Consult Factory for other position.
Set Point Adjustment : Adjustable Knobs on face.
Agency Approvals :. CE, CSA, UL Optional-EXPL Explosion-proof Enclosure does not Possess any Agency Approvals