Control Air Type 650 Positive Bias Relay
The Type 650 positive bias relay is a signal operated regulator that provides an output pressure that is the sum of the input signal pressure plus a preset bias. The unit allows flow capaci ties up to 50 SCFM with minimal pressure drop. An aspirator tube at the output maintains the set pressure under varying flow conditions by causing the main supp!y valve to open and close proportionally to the flow demand. There is a choice of four adjustment ranges for the positive bias settings. This unit is most often used for conversion of a low flow control signal to the higher flow requirements of an operating system.
The Type 650 positive bias relay is a signal operated regulator that provides an output pressure that is the sum of the input signal pressure plus a preset bias. The unit allows flow capaci ties up to 50 SCFM with minimal pressure drop. An aspirator tube at the output maintains the set pressure under varying flow conditions by causing the main supp!y valve to open and close proportionally to the flow demand. There is a choice of four adjustment ranges for the positive bias settings. This unit is most often used for conversion of a low flow control signal to the higher flow requirements of an operating system.
SPECIFICATIONS
| Flow Capacity at 100 psig (7 bar) supply and 20 psig (1.4 bar) output |
50 scfm (1415 Nl/min) |
|---|---|
| Port Size |
1/2" BSP, 1/2" NPT, 1/4" BSP, 1/4" NPT, 3/8" BSP, 3/8" NPT |
| Max. Flow Cv |
1 |
| Sensitivity water column |
0.25" (3.2 mm) |
| Supply Pressure Sensitivity |
0.1 psig (0.007 bar) for a change of 50 psi (3.4 bar) in supply pressure |
| Max. Supply Pressure |
250 psig (17 bar) |
| Max. Output Pressure |
150 psig (10 bar) |
| Max. Signal Pressure |
150 psig (10 bar) |
| Ambient Temperature Limits |
-40° to 160°F (-40° to 71°C) |
| Weight |
1.75 lbs (635 gm) |
| Mounting Options |
Pipe, Panel, bracket |
| Body Materials |
Aluminium |
| Other internal Materials |
Stainless steel, brass, plated steel, acetal, nitrile, polyester fabric, abs plastic |
