Transpector® MPS Residual Gas Analyzer



Excellent Performance and Great Value for General Vacuum Applications

As manufacturing technologies advance and quality standards change, the need to understand your process and maintain product quality is more important than ever. Transpector MPS can help you optimize your process by monitoring process conditions, detecting contaminants, and checking for leaks. Transpector MPS offers the robust performance of the Transpector brand of RGA at an excellent value for our customers.

Transpector MPS is available in both 100 amu and 200 amu versions, which gives you the flexibility of performing a wide variety of functions including general leak detection, vacuum diagnostics, and hydrocarbon analysis. This versatility makes Transpector MPS the sensor of choice for vacuum furnace, heat treating, and vacuum coating applications.


  • Dual filaments
  • Field replaceable Electron Multiplier
  • Field replaceable anode, cathode and repeller filament assembly
  • Interchangeable sensors and electronics
  • TCP/IP Ethernet connectivity
  • Shorter sensors minimize installed footprint
  • Nine-decade dynamic range
  • Max. data rate of 3 ms per point for analog scans and selected peaks
  • MDPP of <1.5E-14 Torr
  • Sensors are assembled, tested and double bagged in a cleanroom environment
  • RoHS Compliant


Type MPS100F MPS100M MPS200F MPS200M
Sensor Length 14.3 cm 19.3 cm 14.3 cm 19.3 cm
Mass Range 100 amu 100 amu 200 amu 200 amu
Detector Type FC EM FC EM
Sensitivity (FC) 3E-4 amps/Torr 3E-4 amps/Torr 3E-4 amps/Torr 3E-4 amps/Torr
Sensitivity (EM) NA 500 amps/Torr NA 500 amps/Torr
Min. Detectable Partial Pressure (3) 2.6E-12 Torr 1.5E-14 Torr 2.6E-12 Torr 1.5E-14 Torr
Max. Sensor Operating Temp. (FC) 200 °C NA 200 °C NA
Max. Sensor Operating Temp. (EM) NA 150 °C NA 150 °C
Filament Type Option Dual Y2O3/Ir filaments Dual Y2O3/Ir filaments Dual Y2O3/Ir filaments Dual Y2O3/Ir filaments
Resolution (1) <1 amu Wide <1 amu Wide <1 amu Wide <1 amu Wide
Temperature Coefficient (2) <1% per °C <1% per °C <1% per °C <1% per °C
Max. Data Rate per Point 3 ms 3 ms 3 ms 3 ms
Zero Blast (@ mass 2) <100 ppm <100 ppm <100 ppm <100 ppm
Max. Operating Pressure 5E-4 Torr 5E-4 Torr 5E-4 Torr 5E-4 Torr
Max. Bakeout Temp. 300 °C 300 °C 300 °C 300 °C
Power Input 20-30 VDC 20-30 VDC 20-30 VDC 20-30 VDC

(1) at 10% of peak height

(2) during an eight hour period, after a half hour warm up; in FC mode only

(3) 256 millisecond dwell time

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