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CD375 titlein stock lvdt

Miniature AC LVDT Position Sensors
for High Temperature and Pressures

CD 375 General Specifications
*Also Available in High Pressure & Temperature Configurations
Input Voltage 3.0 Vrms (nominal)
Input Frequency 2.5 to 3.0 kHz
Linearity Error < ±0.25% of FRO
Repeatability Error < 0.01% of FSO
Hysteresis Error < 0.01% of FSO
Operating Pressure * 20 kpsi
Operating Temperature * -65 °F to +220 °F
-55 °C to +105 °C
-65 °F to +400 °F
-55 °C to +200 °C
Thermal Coefficient of Sensitivity -0.01%/°F (nominal)
-0.02%/°C (nominal)
Vibration Tolerance 20 g to 2 kHz
Shock Survival 1000 g, 11 ms
LVDT Applications
  • Machine tools
  • Robotic grippers
  • Medical equipment
  • Valve position sensing
  • ATMs and copy machines
  • Pneumatic cylinder position
Features
  • Miniature 3/8 inch size, low core mass
  • Ranges of ±0.025" to ±1.0" [±0.63 mm to ±25 mm]
  • Non-linearity less than ±0.25% of FRO
  • 220°F (105°C) operating temperature
  • Coil assembly sealed to IEC IP-61
  • Magnetically shielded SS housing

Macro Sensors’ LVDT CD 375 Series of 3/8 inch (9.5 mm) diameter AC-operated LVDTs are small size contactless linear position sensors for both OEM and end user applications. They are available in full scale measuring ranges from ±0.025 inch (±0.63 mm) to ±1.0 inches (±25 mm). The low mass of their cores makes these miniature LVDTs well suited for high response dynamic measurements. CD 375 Series sensors feature the high resolution, excellent repeatability, and low hysteresis associated with LVDT technology, as well as the highest sensitivity consistent with good linearity. The maximum linearity error for a CD 375 sensor is ±0.25% of full range output, using a statistically best-fit straight line derived by the least squares method.

The proven reliability of CD 375 Series LVDTs is a direct result of manufacturing processes and assembly techniques developed and optimized by Macro Sensors personnel over many years of making LVDTs. Their environmental robustness stems from the materials of their construction, such as glass-filled polymer coil forms for thermal stability and stainless steel housings that act as magnetic shields to reduce the effects of any external AC magnetic fields. Their external sealing meets IEC standard IP-61.

Macro Sensors offers several standard options that permit a user to customize CD 375 LVDTs, including Teflon® bore liners and metric threaded cores. In addition to these standard options, Macro Sensors can design and produce special CD 375 LVDTs, including units with different lead wire exit points and connectors; vented units for operation in pressurized fluids; units for higher ambient temperatures; and units constructed of materials resistant to mild nuclear radiation. Contact the highly experienced Applications Engineers at Macro Sensors for help with any special requirements.

All CD 375 Series LVDTs will operate properly with any conventional differential input LVDT signal conditioners, but operation with ratiometric LVDT signal conditioning circuits is not recommended. Macro Sensors offers a full line of LVDT signal conditioners that will deliver optimum performance from any CD 375 Series LVDTs.

CD 375 Series
CD 375 Series Specifications
Parameter Unit of Measure CD 375-025 CD 375-050 CD 375-100 CD 375-250 CDM 375-500 CDM 375-1000
Nominal Range inches ± 0.025 ± 0.050 ± 0.100 ± 0.250 ± 0.500 ± 1.00
mm ± 0.63 ± 1.25 ± 2.50 ± 6.25 ± 12.5 ± 25
Sensitivity mV/V/.001 in 3.3 1.6 1.6 2.2 1.6 0.7
mV/V/mm 130 63 63 87 63 28
Primary Impedance ohms 90 340 340 500 125 235
Dimension "A" inches 0.50 0.75 1.00 1.75 3.30 5.60
mm 12.7 19.1 25.4 44.5 83.8 142.2
Dimension "B" inches 0.40 0.63 0.64 1.13 2.00 3.00
mm 10.2 16.0 16.3 28.6 50.8 76.2
Dimension "N" inches 0.25 0.38 0.50 0.88 1.65 2.8
mm 6.35 9.5 12.7 22.1 41.9 71.1
Weight - Body ounces 0.10 0.20 0.21 0.40 0.63 0.95
grams 2.8 5.7 6.0 11.3 18.0 27.0
Weight - Core ounces 0.008 0.014 0.015 0.033 0.056 0.088
grams 0.23 0.40 0.42 0.94 1.60 2.50
CD 375 Series Mechanical Drawing and Wiring Diagram
CD375 miniature LVDT mechanical drawing and wiring
CD 375 Series Ordering Information
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