Stonel - ValvePoint Catalog - Stonel

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valve communication and control

Mechanical Switches and Transmitters (Quartz)

Specifications and Ratings Silver Contacts (V Function)

Electrical Ratings 10 Amp @ 125/250 VAC

0.5 Amp @ 125 VDC Temperature Range -40° to 82° C (-40° to 180° F)

Operating Life 400,000 Cycles

Not recommended for electrical circuits operating at less than 20 mA @ 24VDC.

Gold Contacts (W Function)

Electrical Ratings 1.0 Amp @ 125 VAC

0.5 Amp @ 30 VDC Temperature Range -40° to 82° C (-40° to 180° F)

Operating Life 100,000 Cycles

Mechanical Switch (SPDT)

Low cost single-pole double-throw mechanical switches with silver contacts are recommended for high power 125 VAC applications. Gold contacts may be used in 30 VDC computer input applications.

NC NO

Mechanical Switch (DPDT)

Double-pole double-throw mechanical switches enable two electrical circuits to be activated simultaneously. Each switch circuit is electrically isolated from the other. As with standard silver contacts, DPDT switches are designed to operate in high power applications.

i NC

14 Function

Electrical Ratings Temperature Range Operating Life

4.5 Amp @ 125/250 VAC -40° to 82° C (-40° to 180° F) 250,000 Cycles

Not recommended for electrical circuits operating at less than

20 mA @ 24VDC.

• NO

• NC

• NO


Output	Two Wire 4 to 20 mA
Supply Source	10-40 VDC
Span Range*	35° to 270° (Adjustable)
Maximum Loading	700 Ohms @ 24 VDC
Linearity Error Standard (5) High Perf. (7)	+/-0.85° Maximum +/- 0.35°
Cycle Life Standard (5) High Perf. (7)	2 Million Rotations 50 Million Rotations
Vibration Tolerance Standard (5) High Per. (7)	Acceptable Outstanding
Temperature Range	-40° to 82° C (-40° to 180° F)
*Please consult factory for higher spans.
Electrical
Electrical
Schematic	55%
	3	n	r

4 to 20 mA Position Transmitter

Position transmitters provide a precise 4 to 20 mA signal on a two wire DC loop. Control valves manufacturer and dampers are accurately monitored through their range of travel offering you assurance of exact valve position at all times. Select a standard potentiometer or a vibration proof, high-performance potentiometer on your position transmitter.

Load Curve

4 - 20 mA Readout

10 15 20 25 30

Power Supply Voltage

Voltage Supply

StoneL Corporation Phone: (218) 739-5774 • Toll-free: (800) 843-7866 • Website: www.stonel.com 39