Interface Model 9840 Intelligent Digital Indicator
The Interface Model 9840 Intelligent Digital Indicator is a metrology-grade, single-channel instrument designed to serve as the definitive benchmark display for high-accuracy calibration testing rigs and laboratory verification. Engineered specifically to partner with premium force and torque standards, the 9840 delivers ultra-high data resolution and remarkable long-term stability. It is the premier choice across the UK for reference calibration laboratories, aerospace components auditing, national standards validation, and mobile testing systems where absolute certainty is non-negotiable.
At the core of the Model 9840 is an advanced 24-bit internal analogue-to-digital (A/D) converter engine that provides a rock-solid internal resolution of up to 1 part in 500,000. Operating on a bipolar data path, it effortlessly reads alternating tension and compression signals up to a full ±6 mV/V capacity spectrum. The indicator features automated plug-and-play profile pairing; it fully supports IEEE 1451.4 TEDS smart transducer protocols to instantly extract, scale, and map factory sensor parameters the moment a smart load cell is connected. To comfortably manage diverse laboratory configurations, the 9840 stores up to 25 independent, non-volatile internal calibration profiles, allowing technicians to manually scale non-TEDS sensors across multiple engineering units without losing baseline calibration factors or experiencing signal drift.

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Why choose Interface Sensor Products?
Interface is an internationally recognised brand and decades of experience have gone into making Interface manufactured load cells the benchmark for thousands of users around the world.
Interface product reliability is second to none and all our product lines have to match this standard before we would consider recommending them to our customers.
Our customer list is a "Who's Who" of household names ranging from the Aerospace Giants through to the most prestigious Universities. This speaks volumes about our reputation for quality solutions on projects of all sizes around the world.
