Capacitive rotary encoder
Netzer Precision VLT capacitive rotary encoder
Extreme-temperature hollow-shaft encoder rated from -55 C to +125 C for aerospace.
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Need Netzer Precision parts, a replacement or another suitable option? Send your part number or describe the application. We’ll review the requirement and help with product selection, sourcing, pricing and lead times.
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Key specifications
| Bore (max) | 171.4 mm |
|---|---|
| Outer diameter | 35–247.7 mm |
| Speed (max) | 8,000 rpm |
| Resolution (max) | 23 bit |
| Accuracy | up to +/-0.006 deg |
| Interface | SSI, BiSS-C |
| Technology | Electric Encoder (contactless capacitive) |
| Temp | -55 to +125 C |
Series ranges as published; individual models vary. The full datasheet, drawings and CAD models are available on request.
Netzer Precision VLT replacement and alternative options
Use these supply-network options as a starting point for an engineering check. We can also help source the original Netzer Precision part. Published series figures do not establish an exact-model or drop-in replacement: confirm ratings, fit, interfaces and approvals for your application.
Highest-resolution Bogen absolute head, 21 to 24 bit, for linear and rotary scales.
| Published maximum | VLT | AKS17 |
|---|---|---|
| Resolution | 23 bit | 24 bit meets or exceeds |
Figures are the highest published for each series and are not always measured the same way. A higher figure is not automatically a better choice: mounting, duty cycle, feedback, connectors and approvals matter too. An engineer will check the fit against your application before recommending anything.
Netzer Precision VLT model codes
Published model codes in the VLT range, with key figures from the manufacturer's data. Search this page for your part number, or send it to us for availability, pricing and lead time.
| Model code | Outer diameter (mm) | Resolution (bit) | Inner diameter (mm) | Pricing / replacement |
|---|---|---|---|---|
| VLT-25 | 25 | 17-21 | 4.8 | Quote or replacement for VLT-25 → |
| VLT-35 | 35 | 17-21 | 11 | Quote or replacement for VLT-35 → |
| VLT-60 | 59.7 | 17-22 | 25 | Quote or replacement for VLT-60 → |
| VLT-80 | 80 | 17-23 | 35 | Quote or replacement for VLT-80 → |
| VLT-100 | 100 | 17-22 | 48 | Quote or replacement for VLT-100 → |
| VLT-140 | 140 | 17-23 | 90 | Quote or replacement for VLT-140 → |
| VLT-170 | 170 | 17-23 | 110 | Quote or replacement for VLT-170 → |
| VLT-247 | 247.7 | 17-22 | 171 | Quote or replacement for VLT-247 → |
Typical applications
What a capacitive rotary encoder is
A capacitive rotary encoder measures angle by sensing changes in capacitance between patterned electrodes on a rotor and stator, usually printed circuit boards. As the rotor turns, the electric field pattern changes, and electronics convert it into absolute position. With no magnets or optical parts, capacitive encoders are immune to magnetic fields, light and many contaminants. They are typically thin, lightweight and hollow, which suits integration into motors, joints and gimbals with limited space.
When engineers choose a capacitive rotary encoder
Choose a capacitive encoder for slim, lightweight absolute feedback where magnetic fields are strong or weight matters, such as motor-integrated feedback, robot joints, gimbals, aerospace and medical devices. The trade-offs are moisture and electric field sensitivity: water, condensation or conductive debris between electrodes can affect readings, and mounting tolerances matter. For very wet environments, inductive encoders may be more robust. For highest accuracy, optical encoders lead.
How to specify the Netzer Precision VLT
Send these with your enquiry and an engineer can confirm the right VLT variant:
- Absolute resolution (bits)
- Accuracy (arcmin or arcsec)
- Outer diameter and bore (mm)
- Thickness and mass (mm, g)
- Interface: SSI, BiSS or SPI
- Mounting tolerances
- Environment: moisture, temperature and EMC
Common mistakes to avoid
- Exposing electrodes to condensation or conductive dust
- Ignoring mounting tolerances on rotor and stator
- Assuming magnetic immunity means immunity to electric interference
- Skipping calibration after assembly
Netzer Precision VLT: frequently asked questions
Can you help replace Netzer Precision VLT or source the original?
Send the full model code, quantity and required date. Our engineers can check original-part availability and assess suitable alternatives, including Motion Control Products options where appropriate. We confirm compatibility and any changes needed before recommending a replacement.
What is the Netzer Precision VLT?
Extreme-temperature hollow-shaft encoder rated from -55 C to +125 C for aerospace. Published series figures include bore 171.4 mm, outer diameter 35 mm, outer diameter 247.7 mm, speed 8,000 rpm. It is available through our supply network, and our engineers can confirm the right variant for your application.
What model codes are in the Netzer Precision VLT range?
The VLT range includes VLT-25, VLT-35, VLT-60, VLT-80, VLT-100, VLT-140, VLT-170, VLT-247. The table on this page lists each published model code with its key figures. Send us the code you use, or the one you need to replace, and our engineers will confirm availability, lead time or the closest equivalent.
Who makes the Netzer Precision VLT?
The Netzer Precision VLT is made by Netzer Precision (Netzer Precision Position Sensors) available through our supply network. Send us your requirement for pricing, lead time, datasheets and CAD.
What is the bore of the Netzer Precision VLT?
The published series maximum bore is 171.4 mm. Individual models and sizes in the VLT range vary, so check the exact variant against your duty cycle, mounting and environment, or ask our engineers to confirm the right size for you.
Is there an alternative to the Netzer Precision VLT?
We can assess suitable replacement options. On published figures, Bogen AKS17 is options to assess from our supply network. An engineer confirms the fit against your application before recommending anything.
What are the advantages of capacitive encoders?
Capacitive encoders are thin, lightweight, immune to magnetic fields and often hollow, which suits integration into motors and joints. They give absolute position with low power. They are sensitive to moisture between electrodes, so sealing or a protected location is needed.
Are capacitive encoders affected by magnetic fields?
No. They sense electric fields between electrodes, so they are not affected by motor magnets, brakes or nearby magnetic fields. This is an advantage in motor-integrated or high-current environments. Good grounding, cable screening and separation from switching power electronics still help, because strong electrical noise can affect them.
Further reading: Magnetic vs capacitive vs optical encoders · How to select an encoder · Encoders and feedback
Other capacitive rotary encoder series
Engineer support
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