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Pfeiffer TMH / TMU 261 - REBUILT
Weight
20 lbs
Pumping Speed
180-220 l/s
Ultimate Pressure
1 x 10-10 mbar
Pfeiffer Vacuum TMH 261 Turbomolecular Pump - REBUILT
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Specifications
TMH 261 P / Y P
TMU 261 P / Y P
Inlet
DN 100 ISO-K
DN 100 CF-F
Outlet
DN 25 ISO-KF/G 1/4"
Venting connection
G 1/8”
Rotational speed +2%
60,000 rpm
Standby rotational speed
40,000 rpm
Run-up time
1.6 min
Sound pressure level
50 dB(A)
Final pressure, backing pump
< 5 mbar
Integral leak rate
< 1 x 10-7 mbar l/s
Maximum permissible rotor temperature
90°C
Permissible heat radiation power
8 W
Volume flow rate for:
N2
210 l/s
He
220 l/s
H2
175 l/s
Ar
200 l/s
Compression ratio for:
N2
> 1 x 109
He
3 x 105
H2
1.4 x 104
1.3 x 104
Ar
> 1 x 109
Maximum fore-vacuum pressure
N2
10 mbar
He
8 mbar
H2
4 mbar
Ar
10 mbar
Gas throughput at full rotational speed
N2
7 mbar l/s
He
9 mbar l/s
H2
43 mbar l/s
Ar
4 mbar l/s
Gas throughput at 0.1 mbar HV
N2
7 mbar l/s
He
6 mbar l/s
H2
3.5 mbar l/s
Ar
7 mbar l/s
Vertex power characteristics line
A
170 W / 1,000 Hz
B
170 W / 1,000 Hz
C
103 W / 1,000 Hz
D
170 W / 760 Hz
Final pressure
w/ diaphragm vacuum pump
< 1 x 10-7 mbar
< 1 x 10-8 mbar
w/ rotary vane vacuum pump
< 1 x 10-7 mbar
< 5 x 10-10 mbar
Lubricant
TL 011
Maximum cooling water consumption
100 l/h
Maximum cooling water temperature
25°C
Maximum ambient temperature w/ air cooling
35°C
Heating power consumption
170 W
Weight
6.1 kg
8.1 kg
Permissible magnetic field
6 mT
Operating voltage
48 ± 5% VDC
Maximum current consumption
4.8 A
Current consumption, continuous operation
4.1 A
Maximum power consumption
200 W
Power consumption, continuous operation
170 W
Protection class
IP 30
Specifications
Type
Label
Description
Download
Pfeiffer TMH/TMU 261 - REBUILT
Operating Instructions
Download
Need modifications to this item? PTB Sales' expert team of engineers can configure products to your specific needs.
Pfeiffer Vacuum TMH 261 Turbomolecular Pump - REBUILT
PMP02820 / PM P02 820 TMH 261 DN 100 ISO-K
PMP02821 / PM P02 821 TMH 261 P DN 100 ISO-K
PMP02825 / PM P02 825 TMU 261 DN 100 CF
PMP02826 / PM P02 826 TMU 261 SG DN 100 CF
PMP02830 / PM P02 830 TPH 261 PC DN 100 ISO-K
Prefix legend
P = Turbopump
M = Turbo with Holweck stage
H = ISO-flange
U = CF-flange
Suffix
U = Upside down
P = Purge gas
M = Magnetic bearing
C = Corrosive gases
H = High throughput
T = Temperature management
Y = Installation in any orientation
N = Integrated power supply
