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6891 & 6893 PCB Mounting Airswitch

6891 & 6893 PCB Mounting Airswitch
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6891 & 6893 PCB Mounting Airswitch

Product catalog summary
Product Overview: The document describes a range of small switches designed for direct mounting on printed circuit boards. These switches are available with UL versions upon request and feature low-pressure switching. They offer options for back or side tube entry and come with silver or gold contact options. The switches can be factory set within specified tolerances and offer various spout orientations.
Specifications: The 6891 and 6893 PCB Mounting Airswitches are detailed with reference dimensions and range options. They have a contact configuration of SPST N/O and are available in standard and sensitive models. The nominal set points are 37 or 62 mbar for the standard model and 15 or 25 mbar for the sensitive model. The maximum hysteresis is 0.15 mbar, and the body withstand pressure is 2,040 mbar. The operating temperature range is -10°C to +85°C, with a flow solder temperature of 220°C for 5 seconds. The body material is thermoplastic, and the weight is 0.008 kg.
Electrical Data: The contact configuration is SPST N/O with silver or gold plating. The contact rating is a minimum of 10mA at 24V DC and a maximum of 0.5A at 250V AC for silver contacts, and 50mA at 250V AC for gold contacts. UL approved versions have a maximum of 50mA at 250V AC and 10mA at 24V DC.
Additional Information: For pressure or vacuum versions, refer to models 6763/6761 in the Pressure/Vacuum section. Temperature compensated versions are available upon request. The mechanical life of the switches is 1 x 106 cycles. The body construction allows the two ports to be set at any angle to each other, with side entry cap positions at 180º, 90º, and 270º.
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Catalog excerpts

6891 & 6893 PCB Mounting Airswitch-1

(slow make contacts)_ • A range of small switches designed for direct mounting on printed circuit boards • UL versions available upon request • Low pressure switching • Available with back or side tube entry • Silver or gold contact options • Switches can be factory set within specified tolerances • Various spout orientations available Reference dimensions 6891 & 6893 - Range options and specifications Model No. Nominal set point mbar Maximum Hysteresis mbar Body withstand pressure mbar flow rate litre/min (with mbar temperature compensation) Model No. Electrical data Contact configuration Contact plating Silver Gold Silver Gold Contact rating Pressure connection back & side entry spout, 04mm back entry 02mm only Connecting tube reference 2311-01 / 2311-08 to suit 04mm spout 2311-03 to suit 02mm spout Diaphragm Mechanical life Herga Technology Ltd - Northern Way - Bury St. Edmunds - Suffolk - IP32 6NN - UK [email protected] • www.herga.com • +44 (0)1284 701422 Subject to change without notice

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.