7
Product description
4
Product description
4.1 Product identification
Pump types
The product designations of Pfeiffer vacuum turbomolecular pumps are self-ex-
planatory and permit conclusions about the different versions. The product desig-
nation consists of a family designation (1), the size (2), which is oriented on the
pumping speed, and the properties (3) of the pump.
TMH
(1)
261
(2)
P
(3)
To correctly identify the product when communicating with Pfeiffer Vacuum, al-
ways have the information from the rating plate available.
Fig. 1: Example for a rating plate
Standard version
Turbopumps without a property, which concernes to the installation orientation
will be characterized as standard version in the following (e.g. TMH 261 P).
Pump features
Scope of delivery
• Turbopump
• Protective cover for the high vacuum and the fore-vacuum flange
• Operating instructions
4.2 Function
The turbopumps TMH/U 261 form a complete unit together with the electronic
drive unit TC 600. For the voltage supply only Pfeiffer Vacuum power supplies may
be used (e.g.TPS oder DCU). The use of other power units than the proper intended
is only permitted after consultation with Pfeiffer Vacuum (specification of the pow-
er supplies on request).
1. Family designation
2. Model designation
3. Properties
T
= Turbopump
261
= Model designa-
tion of the pump related
to its pumping speed
class
U
= Upside down version
P
= Purge sealing gas system
M
= Magnetic bearing
C
= for corrosive gases
H
= High throughput
T
= Temerature management
Y
= Installation in any orientation
N
= Integrated power supply
P
= Pure turbopump
M
= Turbo with Holweck stage
H
= ISO-flange variants for high
vacuum applications
U
= CF-flange variants for ultra-
high vacuum applications
D
= "Drag" pump for the medium
vacuum range
Mod.:
Mod.-No.:
Ser. No.:
Oil:
S(N
2
):
Mass:
Made in
Germany
2006/03
TMH 261 P
DN 100 ISO-K, 3P
PM P02 821 H
PM 063 265 -T
210 l/s
6 kg
D-35614 Asslar
Characteristics
TMH 261
TMU 261
HV flange
DN 100 ISO-K
DN 100 CF-F
