Macro Sensors LVDTs: PRH-812 Series General Purpose AC-LVDT Position Sensors

Description

Macro Sensors' PRH 812 Series of AC-LVDTs are 0.812 inch (20.6 mm) diameter general-purpose LVDT linear position sensors that feature larger core-to-bore clearance than the standard PR 750 Series of AC-LVDTs. They were designed primarily for use in legacy OEM applications, and are cost-effective exact replacement LVDTs that offer the same form, fit, and function as competitors' products of the same size and range.

Available in full scale measuring ranges of ±0.050 inch (±1.25 mm) to ±10 inches (±250 mm), PRH 812 LVDTs offer 0.062 inch (1.6 mm) radial core-to-bore clearance with the standard 0.25 inch (6.35 mm) diameter core supplied. They feature high resolution, excellent repeatability, and low hysteresis, as well as the highest sensitivity consistent with good linearity. The maximum linearity error of any of these sensors is ±0.25% of full range output (FRO), using a statistically best-fit straight line derived by the least squares method.

The proven reliability of PRH 812 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 sealing meets IEC standard IP-61.

Macro Sensors offers several options that permit a user or OEM to customize PRH 812 LVDTs or to match them to an existing application, including Teflon™ bore liners, metric threaded cores, smaller diameter cores for greater core-to-bore clearance and/or lower core mass, and construction for resistance to mild nuclear radiation. For OEMs, Macro Sensors can design and produce custom or private-labeled PRH 812 LVDTs, including units with different lead wire colors, exit points, configurations, or connectors, vented units for operation in pressurized fluids, and units for higher temperature operation. Contact the Applications Engineering group at Macro Sensors for help with any OEM or special LVDT requirements.

All PRH 812 Series LVDTs will operate properly with any conventional differential input LVDT signal conditioners, but some PRH 812 LVDTs could exhibit reduced performance if utilized with ratiometric input signal conditioners. Macro Sensors offers a full line of signal conditioners that can deliver optimum performance from any PRH 812 Series LVDT. 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' PRH 812 Series of AC-LVDTs are 0.812 inch (20.6 mm) diameter general-purpose LVDT linear position sensors that feature larger core-to-bore clearance than the standard PR 750 Series of AC-LVDTs. They were designed primarily for use in legacy OEM applications, and are cost-effective exact replacement LVDTs that offer the same form, fit, and function as competitors' products of the same size and range. Available in full scale measuring ranges of ±0.050 inch (±1.25 mm) to ±10 inches (±250 mm), PRH 812 LVDTs offer 0.062 inch (1.6 mm) radial core-to-bore clearance with the standard 0.25 inch (6.35 mm) diameter core supplied. They feature high resolution, excellent repeatability, and low hysteresis, as well as the highest sensitivity consistent with good linearity. The maximum linearity error of any of these sensors is ±0.25% of full range output (FRO), using a statistically best-fit straight line derived by the least squares method. The proven reliability of PRH 812 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 sealing meets IEC standard IP-61. Macro Sensors offers several options that permit a user or OEM to customize PRH 812 LVDTs or to match them to an existing application, including Teflon™ bore liners, metric threaded cores, smaller diameter cores for greater core-to-bore clearance and/or lower core mass, and construction for resistance to mild nuclear radiation. For OEMs, Macro Sensors can design and produce custom or private-labeled PRH 812 LVDTs, including units with different lead wire colors, exit points, configurations, or connectors, vented units for operation in pressurized fluids, and units for higher temperature operation. Contact the Applications Engineering group at Macro Sensors for help with any OEM or special LVDT requirements. All PRH 812 Series LVDTs will operate properly with any conventional differential input LVDT signal conditioners, but some PRH 812 LVDTs could exhibit reduced performance if utilized with ratiometric input signal conditioners. Macro Sensors offers a full line of signal conditioners that can deliver optimum performance from any PRH 812 Series LVDT. Details can be found in series 9000 technical bulletins.	Features 0.812 inch diameter legacy replacements Ranges of ±0.050 inch to ±10 inches 0.062 inch radial core-to-bore clearance Non-linearity less than ±0.25% of FRO 300°F (150°C) operating temperature Coil assembly sealed to IEC IP-61 Magnetically shielded SS housing Applications Machine Tools Materials Testing Industrial Robots Checkweigher Scales Packaging Machinery Valve Position Sensing Hydraulic Cylinder Position Automated Assembly Equipment