Macro Sensors LVDTs: CD 375 Series Miniature LVDT Position Sensors

Description

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 ±2.0 inches (±50 mm) and offer 50% larger core-to-bore radial clearance, 0.012 inches (0.3 mm), than similar size units from competitors. 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. Details can be found in series 9000 technical bulletins.


click the image for an enlarged view General Specifications Unit Specifications Mechanical Drawing & Wiring Diagram Support Electronics Options Ordering Information Tech Bulletin	Description 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 ±2.0 inches (±50 mm) and offer 50% larger core-to-bore radial clearance, 0.012 inches (0.3 mm), than similar size units from competitors. 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. Details can be found in series 9000 technical bulletins.	Features Miniature 3/8 inch size, low core mass Ranges of ±0.025 inch to ±2.0 inches 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 Applications Machine Tools Robotic Grippers Medical Equipment Valve Position Sensing ATMs and Copy Machines Pneumatic Cylinder Position Oil and Gas Well Monitoring Automatic Inspection Equipment