HC-485 SERIES – MEV Elektronik GmbH
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HC-485 SERIES

The HC-485 Series of heavy-duty LVDTs are self-contained, ultra precision, digital I/O devices for high performance measurements in environments containing moisture, dirt, and fluid contaminants. The HC-485 eliminates the need for expensive and error-prone analog to digital conversion by internally converting the analog LVDT signals into engineering units (imperial or metric). The result is a fully calibrated and traceable measurement device, ready for installation, and 100% field interchangeable.

Operating on 8.5 to 30 VDC supply, the HC-485 provides an addressable RS-485 (2-wire) digital output (MODBus RTU and ASCII protocols) running at 119kBd baud rate and capable of handling up to 32 devices communicating over two wires. MIN, MAX and TIR readings are sampled and stored internally at a maximum update rate of 600 samples per second, and are provided to the host on demand. A velocity output (inch or mm per second) is also available, while an internal tare (zero) function affords maximum set-up flexibility.

MEAS offers accessories and options such as mating connector plugs, imperial or metric threaded core, guided core, and captive core. The ‘EA’ (Extended Accuracy) option extends the linear stroke range to 150% with ±0.1% linearity.

Like in most of our LVDTs, the HC-485 windings are vacuum impregnated with a specially formulated, high temperature, flexible resin, and the coil assembly is potted inside its housing with a twocomponent epoxy. This provides excellent protection against hostile environments such as high vibration and shock.

Captive core option: The HC-485 features an optional captive core design that greatly simplifies installation. The core rod and bearing assembly includes a Bronze bearing on the front end for self-alignment, while a PTFE sleeve allows low-friction travel through the stainless steel boreliner (spool tube).

Technical Data

Features:
· RS-485 output
· ±0.25% of FR max (±0.1% optional) linearity
· 32 devices communicating over 2 wires
· MIN, MAX and TIR readings
· Velocity output
· Internal tare (zero) function
· Stroke ranges from ±0.125 to ±3 inches
· IEC IP68 rating to 1,000 PSI [70 bars]
· All-welded stainless steel construction
· MS type connector (MIL-C-5015)
· MOD-Bus RTU [&] ASCII protocols
· Programmable filtering
· Velocity output
· Field interchangeable
· Calibration certificate supplied with each unit

Applications:
· Process control
· Valve position feedback
· Roller gap
· Automated test systems
· X-Y Positional Feedback
· Remote Monitoring
· Applications where wiring must be minimized

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HC-485 SERIES

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Your Contact Person

Pascal Wittfeld

Field Application Engineer

+49 (0)5424 2340-54

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