Difference between revisions of "Vacuum"

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|nEXT730/930
 
|nEXT730/930
 
|[https://www.youtube.com/watch?v=liL4atpVsxs&pp=ygUSdHVyYm8gcHVtcCByZWJ1aWxk Official bearing replacement]
 
|[https://www.youtube.com/watch?v=liL4atpVsxs&pp=ygUSdHVyYm8gcHVtcCByZWJ1aWxk Official bearing replacement]
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|Pfeiffer / Balzers
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|TPU050
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|[https://www.youtube.com/watch?v=2QlSxLOcfSY Hall sensor replacement]
 
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Revision as of 00:11, 21 August 2024

Turbo

Pfeiffer TPH/TPU

Rebuild videos / resources
Vendor Model Link(s) Note
Agilent V81M Link
ALCATEL ATP400C Link
Edwards EXT255 Aggressive repair of totaled pump
Edwards nEXT240 Oil, bearing replacement
Edwards nEXT730/930 Official bearing replacement
Pfeiffer / Balzers TPU050 Hall sensor replacement
Pfeiffer / Balzers Misc short See wiki page / mcmaster notes
Pfeiffer TMU260 Cleaning
Leybold Bearings
Leybold MAG2000CT Link
Leybold Turbovac50 Link
Leybold Turbovac150 Disassembly
Leybold TMP151 Link
Leybold T1600 Link
Varian V200 Link
Misc Pump balancing

Turbo pump oils:

Vendor Model Viscosity Density Vapor Pressure Notes
Apiezon AP303 29 mm²/s @ 40 °C 0.97 g/mL @ 20 °C 3.1E-7 Torr @ 80°C
braycote 815Z 148 mm²/s @ 38°C

45 mm²/s @ 100°C

4E-13 Torr @ 20C

2E-9 Torr @ 100C

DO NOT USE THIS. Only in here for reference


McMaster: not a turbo oil so much as something I used in a pinch that I had laying around

Viscosity is way too high


"mixture of small PTFE particles and a perfluorinated polyether liquid"

Cambridge Mills CMP500 8.7 mm2/s @ 130C 0.922 g/mL @ 22C 0.1 mm @ 130C "Hydrocarbon Oil"

A&J: "TL011 is discontinued and Pfeiffer does not offer a replacement for it. You could use CMP500, which is chemically identical."

Dymavac 500 8.7 mm²/s @ 54 ° C 1E-7 Torr @ 25°C
Leybold HE500 LVO variant required?


98-198-052

98-198-053

98-198-030

Leybold Leybonol

LVO-250

13 mm²/s @ 40 °C

3.5 mm²/s @ 100 °C

925 kg/m3 @ 15C "<0.5 Pa @ 20C" Replaces HE500

Oil type: Synthetic oil (Ester oil with additives)

"Bearing lubricant for turboradial blowers."

TURBOSTREAM

Pfeiffer TL 011 10.5 mm²/s @ 40 °C 0.947 kg/dm3 @ 20 °C No data TPU/TPH official oil


Notes:

  • 1 centistokes =1 millimeter²/second
    • 1 cSt = 1 mm2/s

Sensor

McMaster sensor state 2024-07-17

  • Got burned by mismatched GP275 sensor to gauge
    • I thought it was going to give an error like 40%, but its actually a zero point error => massive misreading / order of magnitudes
  • Inficon
    • Found 3x BCG450 at flea market. 1 / 3 work
    • Notes
  • MKS 901P might also go into ecosystem

GP275

GP275 controllers:

  • GP375
    • Green display
    • RS232 as DB9
    • Circa 2009
  • 275106, 275108
    • Red display
    • Cable seems to be uncommon
    • Cable has AC + GP275 connection
  • Granville-Phillips 316 Vacuum Gauge Controller 316001
    • IG controller
    • Integrated power supply, controller
  • HP 59827A
    • Rebranded GP
      • Somewhat similar to Granville-Phillips 316 Vacuum Gauge Controller 316001
    • Half width IG controller (integrated PS / controller)
  • Granville Phillips 307001
    • Full width IG controller (half PS, half controller)
    • RS232 is optional card

GP275 sensor

Can get ones with integrated controllers. You can take the sensor out of them but it doesn't have the keying on the connector

Haven't played with DeviceNet, RS485, etc direct control on these

MKS 901P


Hastings HPM-2002

Interesting but tubes are relatively scarce on surplus market

Nice integrated display + sensor pluggable architecture

https://www.youtube.com/watch?v=hrZwKTwS9cs

HASTING INSTRUMENTS VACUUM GAUGE MODEL 760 110-220 VAC 760

TELEDYNE HASTINGS DUAL SENSOR VACUUM GAUGE MODEL HPM-2002-OBE

HVG-2020B

Teledyne Hastings HPM-2002 Digital Dual Vacuum Digital Gauge w/ RS232 Option