TAC Pneumatic Products Catalog
TAC Pneumatic Products Catalog
TAC Pneumatic Products Catalog
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R500<br />
2351- 001)<br />
R500 (2351-001)<br />
<strong>TAC</strong> PNEUMODULAR � Integral Relay with Capacity Tank<br />
The integral relay is a modulating device used with<br />
a proportional controller in applications where it is<br />
necessary to maintain the value of a controlled<br />
variable within close limits. Integral action added to<br />
proportional control allows the use of a wider<br />
proportional controller throttling range to avoid<br />
hunting while simultaneously minimizing or<br />
eliminating the offset (of the actual control point<br />
from the desired setpoint) that is inherent in<br />
proportional control alone. When integral action is<br />
added to proportional control, the result is<br />
proportional plus integral control, frequently<br />
referred to as PI control or automatic reset.<br />
Features:<br />
• Provides pneumatic PI (proportional-plus-integral) control,<br />
when used with pneumatic controllers, or<br />
receiver-controllers, having widely adjustable<br />
throttling-range. (Optimum PI control requires adjustable<br />
throttling-range.)<br />
• Has adjustable integral timing, with minutes-per-repeat<br />
scale.<br />
• All ports clearly labeled. Ports align with MCS-S terminals.<br />
• <strong>TAC</strong> PNEUMODULAR: Mounts on MCS-Socket or K502<br />
Mounting Bracket.<br />
Model Chart<br />
Model No.<br />
Wholesale<br />
Model No.<br />
R500 2351-001 a<br />
a Includes plastic mounting strap and adhesive backed mounting base.<br />
Active Connections<br />
Port Connected to<br />
M Main air<br />
B Branch output<br />
S1 Input signal from controller<br />
Connects to K500 capacity tank 20 cubic in.<br />
S2 (328 cubic cm)<br />
Specifications<br />
Construction Glass-filled nylon.<br />
Maximum ambient temperature 140�F (60�C).<br />
Supply air pressure Clean, dry, oil free air required (Ref. EN-123).<br />
Nominal 20 psig (138 kPa).<br />
Maximum 30 psig (207 kPa).<br />
Connections Barbed nipples for 1/4 in. O.D. polyethylene or 5/32 in. I.D. polyurethane tubing.<br />
Air consumption 1728 scim (472 mL/s).<br />
Air flow capacity 230.4 scim. (62.9 mL/s).<br />
Calibration Yes.<br />
Adjustments<br />
Mounting<br />
S2 M<br />
Timing of integral action is adjustable from FAST to OFF, with approximate dial marks of 0.2, 0.3, 0.7,<br />
1.0, 5.0, and 15 minutes.<br />
Designed for use on MCS-S manifold socket. This device can also be field mounted by using the<br />
K502 mounting bracket.<br />
88 © Copyright 2006 <strong>TAC</strong>. All Rights Reserved. F-27383-1<br />
BS1<br />
K500 Capacity Tank<br />
Included with R500