925 MicroPirani™ Cross Reference
Sens4 offers a range of vacuum transducers that serve as direct drop-in replacements for the MKS 925 vacuum transducer.
Our recommended alternative to the MKS 925 micro-Pirani transducer is engineered for effortless integration into existing setups—no changes required to cabling, analog signal scaling, setpoint configuration, digital communication protocols, or interface compatibility.
Ensure business continuity by qualifying a second source alternative to the MKS 925 MEMS Pirani transducer or qualify our vacuum measurement solution as your first choice to take advantage of our short lead time, competitive pricing, and best-class performance.
Sens4 provides two plug-and-play replacements for the MKS 925, ensuring a smooth transition and minimal downtime.
MicroPirani™ is a trademark of MKS Instruments Inc.
VPM-5 SmartPirani™ Transducer
- Delivers comparable functionality to the 925 vacuum transducer with enhanced measurement performance.
- Features true absolute diaphragm measurement from 2 to 1000 Torr combined with high-performance MEMS Pirani vacuum measurement down to 7.5E-7 Torr.
- Includes an atmospheric switch function for precise measurements relative to ambient barometric pressure.


VPM-15 TriCAP™ Transducer
- Integrates a capacitance diaphragm manometer and a piezo diaphragm sensor, providing gas-independent measurement from 5E-3 to 1333 Torr.
- The SmartPirani™ MEMS sensor ensures exceptional zero stability and measurement down to 7.5E-7 Torr.
- Ideal for users seeking a significant performance upgrade over existing MKS 925 applications.
MKS 925 Transducer Cross Reference Table
Looking for a seamless replacement for your MKS 925 MicroPirani™ transducer?
The Sens4 VPM-5 is a high-performance, drop-in replacement designed to deliver superior accuracy, reliability, and long-term stability.
- Vacuum flange mechanical compatibility
- Emulates analog voltage output pressure signal scaling
- Emulates digital communication protocol with extended measuring range
- Comparable relay setpoint functionality
- Connector pin compatibility
- Supply voltage compatibility
- Compatibility with MKS PDR900 power supply and display
- Typical lead time: 1-4 workdays
Upgrade your vacuum measurement system today with the VPM-5 SmartPirani™ vacuum gauge and experience next-level performance without changing your setup.
MKS P/N | Description of Transducer Configuration | Sens4 P/N | Buy Now |
925-11030 | DN16KF, RS-232, 1VDC/decade, Torr, 3 relays, 15 Pin HD D-sub | ||
925-12030 | DN16KF, RS-485, 1VDC/decade Torr, 3 relays, 15 Pin HD D-sub | ||
925-21030 | DN25KF, RS-232, 1VDC/decade Torr, 3 relays, 15 Pin HD D-sub | ||
925-22030 | DN25KF, RS-485, 1VDC/decade Torr, 3 relays, 15 Pin HD D-sub | ||
925-41030 | VCR4F, RS-232, 1VDC/decade Torr, 3 relays, 15 Pin HD D-sub | ||
925-42030 | VCR4F, RS-485, 1VDC/decade Torr, 3 relays, 15 Pin HD D-sub | ||
925-11 | DN16KF, RS-232, 1VDC/decade, Torr, 3 relays, 15 Pin HD D-sub | ||
925-12 | DN16KF, RS-485, 1VDC/decade Torr, 3 relays, 15 Pin HD D-sub | ||
925-21 | DN25KF, RS-232, 1VDC/decade Torr, 3 relays, 15 Pin HD D-sub | ||
925-22 | DN25KF, RS-485, 1VDC/decade Torr, 3 relays, 15 Pin HD D-sub | ||
925-41 | VCR4F, RS-232, 1VDC/decade Torr, 3 relays, 15 Pin HD D-sub | ||
925-42 | VCR4F, RS-485, 1VDC/decade Torr, 3 relays, 15 Pin HD D-sub |
Cross-reference Disclaimer
This MKS 925 cross-reference tool is intended as a guide for users with technical expertise in vacuum gauging technology. The suggested cross-referenced product is based on our best technical assessment of publicly available product information from the other manufacturer at the time of collection.
Please note that the suggested cross-referenced products are not identical, and technical differences may exist. It is the user’s responsibility to evaluate the suitability and compatibility of the recommended Sens4 product for their specific application and environment. We strongly advise reviewing our datasheet and specifications thoroughly before installation and use.
Sens4 assumes no liability for any claims related to product interchange, improper use, incorrect installation, or exposure to gases or liquids that are not compatible with the media-wetted materials specified in the product documentation.
Need Assistance?
For further guidance, technical support, OEM pricing, or information about performance differences and application compatibility, please do not hesitate to contact the Sens4 team.
Popular Vacuum Measurement Products

VPM-15 TriCAP™
All the features and functions of the VPM-5, but now also with capacitance and piezo diaphragm gauge for gas independent measurement from 5E-3 to 1333 mbar.

VPM-7 SmartPirani ATM
The VPM-7 is the choice if you need to combine vacuum measurement and atmospheric switch functionality.
Designed for load-lock control.

TrueVAC™ Controller
Universal 3 channel controller for hassle-free display of measurement pressure data. Combine different vendors gauges.