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Pfeiffer TMH 261-250-030 - REBUILT

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Manufacturer Part Number: PM P03 168
Pfeiffer TMH 261-250-030 - REBUILT
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Pfeiffer TMH 261-250-030 - REBUILT

Pfeiffer Vacuum TMH 261-250-030 P X Split Flow 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

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Pfeiffer Vacuum TMH 261 Split Flow Turbomolecular Pump - REBUILT

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