TAC Pneumatic Products Catalog
TAC Pneumatic Products Catalog
TAC Pneumatic Products Catalog
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<strong>Pneumatic</strong>-Electric High/Low Alarm Switch<br />
The switch is used to provide high and low signal<br />
alarm. Two independently adjustable SPDT switches<br />
provide 3 to 15 psig high and low alarm contact<br />
capability in this single device.<br />
Features:<br />
• The R470 has very narrow switching differential, and can be<br />
used with any pneumatic transmitter to set two independent<br />
high and low alarm points within the range of the transmitter.<br />
• It can also be used for other pneumatic applications requiring<br />
separate adjustment of two independently adjustable electrical<br />
switching actions.<br />
• Has two SPDT switches. The switching point of each can be<br />
independently adjusted.<br />
• Must be mounted in enclosure.<br />
Model Chart<br />
Model No.<br />
Wholesale<br />
Model No.<br />
Description<br />
R470 2386-601 <strong>Pneumatic</strong>-electric high/low alarm switch.<br />
Specifications<br />
Environment<br />
Ambient temperature limits -30 to 160�F (-34.4 to 71.1�C).<br />
Locations Avoid areas with excessive vibration or corrosive materials.<br />
Supply air pressure Control air only; clean, dry, oil free air required (Ref. EN-123).<br />
Nominal 3 to 15 psig (21 to 103 kPa) or 3 to 27 psig (21 to 186 kPa).<br />
Maximum<br />
Connections<br />
100 psig (689.5 kPa).<br />
Air 1/4 in. 18 NPT female.<br />
Wiring Screw terminals.<br />
Typical Applications<br />
R470 (2386-601)<br />
Setpoint<br />
Adjustable, 1 to 27 psig (7 to 186 kPa). Each switch set independently by a self-locking, slotted<br />
screw.<br />
Switch action Two single pole, double throw, snap acting switches.<br />
Switch rating<br />
10A at 125/250 Vac, 0.5A at 28 Vdc.<br />
(Note: Not suitable for switching thermocouples or RTD sensors or loads of less than 120 volts.)<br />
Differential (each switch) Non-adjustable, 0.05 psig (at lowest setpoint) to 0.25 psig (at highest setpoint) (34 to 1.7 Pa).<br />
Mounting Two lugs with clearance holes for #10 screws. Mounts in any position.<br />
Dimensions 4-3/4 H x 3-1/2 W x 3-1/2 D in. (120 x 89 x 89 mm).<br />
Figure 1 Typical Application.<br />
Temperature<br />
Transmitter<br />
(3-15 psig)<br />
N100-0010<br />
M<br />
R470<br />
C<br />
NC<br />
NO<br />
C<br />
1 Switches operate independently of each other.<br />
Low-Temp Alarm<br />
High-Temp Alarm<br />
F-27383-1 © Copyright 2006 <strong>TAC</strong>. All Rights Reserved. 85<br />
R470<br />
(2386-6
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