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OSW Datasheet(PDF) 1 Page - Omega Engineering, Inc. |
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OSW Datasheet(HTML) 1 Page - Omega Engineering, Inc. |
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1 / 3 page  G-71 For isothermal, low resistance switching of temperature measurement circuits, OMEGA offers three styles of selector switches. The OSW style features silver plated contacts, while the OSWG line includes gold plated U 76 mm (3"), 127 mm (5") and 1⁄4 DIN Sizes U Gold or Silver Plated Contacts U 2 or 3 Poles in 76 mm (3") and 127 mm (5") sizes U 2, 3, or 4 Poles in 1 ⁄4 DIN Size U 2 to 34 Positions U Round or Pistol Grip Handles U Wire Connecting Combination Screws Included OSW Series Any switch is available with a standard round knob or an optional pistol grip handle. Viewing the switch from a distance is generally easier with a pistol grip handle, as is switching its position while wearing gloves. Choice of GOLD or SILVER Contacts Available MONOGRAM® SERIES with gold plated contacts Rotary Selector Switches For Thermocouple, RTD and Thermistor Circuits contacts. The SW14 1⁄4 DIN switches come with a choice of gold or silver-plated contacts. Each style offers 2 to 34 positions in a break-resistant Noryl® case. The isothermal design of these rotary switches minimizes temperature gradients between the input and output thermocouple wiring. This in turn minimizes errors in transmitting thermocouple signals due to the generation of a thermal emf at the wire junctions. The low resistance of the silver or gold plated contacts also enables switching of temperature sensitive resistance devices, such as RTD’s and thermistors. Two pole SW and OSW series switches have a convenient “off” position. The “off” position may be left as an open circuit or shorted to keep spurious signals from registering on thermocouple instruments. Each pole is fully isolated. For quick and easy wiring, the terminals located at the rear of the switch are clearly marked. |
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