Vacuum

Turbo

Pfeiffer TPH/TPU

Rebuild videos / resources:

Vendor	Model	Link(s)	Note
ALCATEL	ATP400C	Link
Edwards	EXT255	Aggressive repair of totaled pump
Edwards	nEXT240	Oil, bearing 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

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