TAC Pneumatic Products Catalog

R537 (2375-501)
TAC PNEUMODULAR � Summation Relay
The summation relay is a proportioning device for
use in pneumatic control systems where the
application requires the addition of two pneumatic
signals. The branch line pressure increases in
direct proportion to the sum of the two input
signals and amplifies the volume of air available for
the final control device, thereby minimizing system
lag.
Features:
• Using S-1 and S-2 inputs, with main air on port M, the
R537 operates as a summation (adding) relay; output is
equal to the sum of the two inputs.
• May be used as a low pressure selector (with inputs to
ports S-1 and M).
• May be used as 1:1 booster relay with adjustable bias.
• All ports clearly labeled. Ports align with MCS-S terminals.
• TAC PNEUMODULAR: Mounts on MCS-Socket or K502
Mounting Bracket.
Model Chart
Model No.
Specifications
Accessories
Wholesale
Model No.
R537 2375-501 a
a Includes plastic mounting strap and adhesive backed mounting plate.
Port Connections
Port Connected to
M Main air
B Branch output
S1 Input signal no. 1
S2 Input signal no. 2
Action Proportional.
Construction Glass-filled nylon.
Maximum ambient temperature 140�F (60�C).
Supply air pressure Clean, dry, oil free air required (Ref. EN-123).
Nominal 20 psig (138 kPa).
Maximum 30 psig (207 kPa).
Connections Barbed fittings for 1/4 in. O.D. polyethylene or 5/32 in. I.D. polyurethane tubing.
Air consumption 28.8 scim (7.9 mL/s).
Air flow capacity 230.4 scim (62.9 mL/s).
Adjustments Output biased �10 psi.
Mounting
Designed for use on MCS-S manifold socket. This device can also be mounted by using the optional
K502 mounting bracket.
Dimensions 2-1/16 H x 1-7/8 W x 2-33/64 D in. (52 x 48 x 64 mm).
Model No. Wholesale Model No. Description
K502 22-150 Optional mounting bracket.
TOOL-082 � 5/64 in. hexhead wrench.
S2 M B S1
104 © Copyright 2006 TAC. All Rights Reserved. F-27383-1
R537
(2375-501