Type 650 Positive Bias Relay
Type 650 Positive Bias Relay
Output pressure from input signal plus a preset bias
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 |
50 SCFM (1,500 Nl/min) at 100 psig (7 BAR) supply with 20 psig (1.4 BAR) |
|
Exhaust Capacity |
15 SCFM (450 Nl/min). Downstream 5 psig (0.34 BAR) above set pressure |
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Sensitivity |
1/4" (3.2 mm) water column |
|
Effect of Supply Pressure Change |
0.1 psi for a 50 psig change |
|
Maximum Supply Pressure |
250 psig (17.24 BAR) |
|
Maximum Signal Pressure |
150 psig (10.34 BAR) |
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Maximum Output Pressure |
150 psig (10.34 BAR) |
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Ambient Temperature Limits |
40°F to 200°F (-40° C to 93° C) |
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Weight |
1.75 Ibs. (635 gm) |
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Mounting |
pipe, panel or bracket |
Ordering
(NPT) |
|||
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psi |
bar
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OPTIONS - Add proper letter onto end of model number:
E - Tapped Exhaust: allows captured exhaust.
Z - Fixed Negative Bias: -4+ psi bias
U - BSP Porting
ACCESSORIES
Mounting Bracket: - P/N: 446-707-025
Pressure Gauge:
0-15 psi P/N: 446-725-003
0-30 psi P/N: 446-725-004
0-60 psi P/N: 446-725-001
0-150 psi P/N: 446-725-002