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PFEIFFER | TMH261P Pump Specification

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PFEIFFER TMH261P Pump Specification

Parameter TMH261P
Flange (in) DN 100 ISO-K
Flange (out) DN 25 ISO-KF / G 1/4"
Venting connection G 1/8"
Rotational speed ±2% 60000 rpm
Run-up time 1.6 min
Ultimate pressure
with rotary vane pump
< 1·10⁻ mbar
Ultimate pressure
with diaphragm pump
< 1·10⁻ mbar
Fore Vacuum max. for N₂ 1.4 · 105
Compression ratio N₂ >1·10⁹
He 3·10⁵
H₂ 1.4·10⁴
Ar >1·10⁹
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
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
Pumping speed backing pump
for the listed gas throughputs at least
10 m3/h
Pumping speed for N₂ 210 l/s
He 220 l/s
H₂ 175 l/s
Ar 200 l/s
Cooling method, standard Water, air
Max. cooling water temperature 25 °C
Cooling water consumption 100 l/h
Weight 6.1 kg
Standby rotational speed 50 db (A)
Sound pressure level 22 mbar
Ultimate pressure of
the backing pump
<5 mbar
Integral leak rate <1·10 mbar l/s
Max. rotor temperature 90 °C
Max. input heat capacity 8 W
Max. surrounding magnetic field 6 mT
Fore vacuum max. He 8 mbar
H₂ 4 mbar
Ar 10 mbar
Vertex of the power
characteristics line
A 170/1000 W/Hz
B 170/1000 W/Hz
C 103/1000 W/Hz
D 170/760 W/Hz
Lubricant TL011
Max. ambient temperature
with air cooling
35 °C
Operating voltage 48 ± 5% VDC
Max. power consumption: pump 200 W
Power consumption,
continous operation
170 W
Max. current consumption: pump 4.8 A
Current consumption,
continous operation
4.1 A
Protection class IP 30
Temperature: Storage -25 to +55 °C
Relative humidity
(non dewing)
5 to 85 %
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