Brochure

R436

Typical Applications

Figure 2 Typical Applications.

Positive Only

Lower Negative

Higher Positive

Negative Only

Higher Negative

Lower Positive

Diaphragm

Status

Alarm

To prove excessive air flow or pressure

Status

Alarm

To prove insufficient air flow or pressure

Diaphragm Connections

Refer to figure below. For positive pressure only, connect sampling

line to port E; port F remains open to atmosphere.

For negative pressure only, connect sample line to port F; port E

remains open to the atmosphere.

Two positive samples; connect higher pressure to port E and lower

pressure to port F.

Two negative samples; connect more negative sample to port E;

less negative to port E.

One positive and one negative; positive to port E; negative to port F.

Electrical

Before any pressure is applied to the

diaphragm, the switch contact rests in the

N.C. position (see figure below). Upon

application of sufficient pressure to actuate

the switch, the contact transfers to the N.O.

position. Connect control, status, and/or

alarm circuits, as shown.