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HC485 Schaevitz™ RS-485 Multi-Drop Displacement Sensor

Displacement Sensor HC-485

The HC485 Displacement Sensor is available in seven bipolar measurement ranges, with standard strokes from ±0.050 inches to ±3.0 inches (±1.25 mm to ±75.0 mm). Operating on a single ended 8.5 to 30.0 volt dc. input and a two-wire addressable RS-485 output, the HC485 is ideally suited to factory automation applications. Direct digital output eliminates the need for expensive and error prone analog to digital conversion. The analog sensor output is scaled into calibrated engineering units, by the internal microprocessor, using factory computed conversion tables, thus providing a traceable measurement without need of an on-site calibration. A certificate of calibration is shipped with every sensor. Internal MIN, MAX and TIR functions store peak and valley readings at a maximum up-date rate of 600 samples per second to deliver the information to the host, on demand. An internal tare or zero function allows unipolar or bipolar output, as the application dictates. The HC485 digital output LVDT is packaged in a rugged hermetically sealed stainless steel tube, suitable for use in the most demanding factory floor environments. A six-pin MS style bayonet connector is welded to the lead side of the LVDT, for ease of termination. Mating connectors are supplied upon request.

Features

  • Up to 32 sensors on one 2-wire network
  • Interchangeability without calibration
  • Hermetically sealed design
  • MOD-Bus ASCII and RTU output
  • Factory calibrated inch or millimeter user selectable output
  • Digital programmable filtering
  • Build-in tare and un-tare
  • Build-in Min/Max function
  • Velocity output inch/s or mm/s
  • Calibration certificate

Options

  • Captive core
  • Guided core
  • Metric thread core
  • EA calibration provides 150 % stroke and 0.05 % linearity
  • Special OEM protocols
  • Mating connector

Applications

  • Process control
  • Valve position feedback
  • Roller gap
  • Automated test systems

SpecificationsSeries HC485

Supply voltage

8.5 … 30 VDC

Input current

50 mA (nominal)

Operating temperature

-25 … +85 °C

Storage temperature

-55 … +95 °C

Native protocols RS-485

ModBus RTU

ModBus ASCII

0,25 % v.B., optional 0,05 %

Omega I

15 bit

Linearity

0.25 % full range, optional 0.05 %

Resolution, minimum

15 bit

Stability

0.1 % full range

Temperature coefficient of scale factor

≤0.05 %/K

Shock survival

250 g for 11 ms

Vibration tolerance

10 g up to 2 kHz

Housing construction

TIG-welded 400 stainless steel

Mechanical Specifications

Dimensions of LVDT HC-485

All dimensions in inches, values in brackets in mm, approx. values. These drawings are for information only and not intended for construction purpose. Please ask for detailed drawings.

Modellnummer Messbereich Abmessungen, ca.
 

A (body)

B (core)

C

P

 

inch

mm

inch

mm

inch

mm

inch

mm

inch

mm

HC485-050

±0.050

±1.25

3.34

84.8

0.585

14.9

1.17

29.7

0.54

13.7

HC485-125

±0.125

±3.0

4.39

111.5

1.100

27.9

2.01

51.1

0.96

24.4

HC485-250

±0.250

±6.0

5.51

140.0

1.800

45.7

2.87

72.9

1.38

35.1

HC485-500

±0.500

±12.5

6.92

175.8

3.000

76.2

4.56

115.8

2.23

56.6

HC485-1000

±1.000

±25.0

9.18

233.2

3.800

96.5

6.82

173.2

3.22

81.8

HC485-2000

±2.000

±50.0

12.66

321.6

5.300

134.6

10.30

261.5

4.91

124.7

HC485-3000

±3.000

±75.0

17.63

447.8

6.200

157.5

15.27

387.9

7.59

192.8