Brochure

R500 (2351-001)
88
© Copyright 2006 TAC. All Rights Reserved. F-27383-1
TAC PNEUMODULAR
£
Integral Relay with Capacity Tank
Model Chart
Specifications
The integral relay is a modulating device used with
a proportional controller in applications where it is
necessary to maintain the value of a controlled
variable within close limits. Integral action added to
proportional control allows the use of a wider
proportional controller throttling range to avoid
hunting while simultaneously minimizing or
eliminating the offset (of the actual control point
from the desired setpoint) that is inherent in
proportional control alone. When integral action is
added to proportional control, the result is
proportional plus integral control, frequently
referred to as PI control or automatic reset.
Features:
• Provides pneumatic PI (proportional-plus-integral) control,
when used with pneumatic controllers, or
receiver-controllers, having widely adjustable
throttling-range. (Optimum PI control requires adjustable
throttling-range.)
• Has adjustable integral timing, with minutes-per-repeat
scale.
• All ports clearly labeled. Ports align with MCS-S terminals.
• TAC PNEUMODULAR: Mounts on MCS-Socket or K502
Mounting Bracket.
Model No.
Wholesale
Model No.
Active Connections
Port Connected to
R500 2351-001
a
a
Includes plastic mounting strap and adhesive backed mounting base.
M Main air
B Branch output
S
1
Input signal from controller
S
2
Connects to K500 capacity tank 20 cubic in.
(328 cubic cm)
Construction Glass-filled nylon.
Maximum ambient temperature 140qF (60qC).
Supply air pressure Clean, dry, oil free air required (Ref. EN-123).
Nominal 20 psig (138 kPa).
Maximum 30 psig (207 kPa).
Connections Barbed nipples for 1/4 in. O.D. polyethylene or 5/32 in. I.D. polyurethane tubing.
Air consumption 1728 scim (472 mL/s).
Air flow capacity 230.4 scim. (62.9 mL/s).
Calibration Yes.
Adjustments
Timing of integral action is adjustable from FAST to OFF, with approximate dial marks of 0.2, 0.3, 0.7,
1.0, 5.0, and 15 minutes.
Mounting
Designed for use on MCS-S manifold socket. This device can also be field mounted by using the
K502 mounting bracket.
R500
2351-001)
S2 M BS1
K500 Capacit
y
Tank
Included with R
500