Thermo Scientific Thermo Scientific 3906, Operating Manual

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Thermo Scientific Model 3900 Series | 12-7
Specifications |
Chapter 12
Continuing research and improvements may result in specification changes at any time. Performance plus or
minus the least significant digit unless otherwise specified.
1
Installation category (overvoltage category) defines the level of transient overvoltage which the instrument is
designed to withstand safely. It depends on the nature of the electricity supply and its overvoltage protection
means. For example, in CAT II which is the category used for instruments in installations supplied from a
supply comparable to public mains such as hospital and research laboratories and most industrial
laboratories, expected transient overvoltage is 2500V for a 230V supply.
2
Pollution degree describes the amount of conductive pollution present in operating environment. Pollution
degree 2 assumes that normally only non-conductive pollution such as dust occurs with the exception of
occasional conductivity caused by condensation.
Max. humidity in storage, non condensing % r.F. 90
Post-transport acclimation time h 2
Noise level (measuring point: device-distance of
the front side1,0m, height=1,6m)
dB(A)
≤ 48 ≤ 51
Heat load to the environment W / BTU
hour 1750 / 6000 1750 / 6000
Models
Ambient conditions Unit 3906 3943
Models
Site conditions Unit 3906 3943
Maximum altitude above sea level m/y NN 2000/2187
Minimum side clearance mm/in 150 / 5.9 150 / 5.9
Minimum front clearance mm/in 1100 / 43.3 1100 / 43.3
Minimum back wall clearance mm/in 250 / 9.8 250 / 9.8
Minimum top clearance mm/in 250 / 9.8 250 / 9.8