Site Requirements
Power
Thermo Fisher Scientific
Prima PRO & Sentinel PRO Mass Spectrometers User Guide
3-9
The instrument must be connected to a clean earth (ground) point
(see below).
For systems with a single rotary pump and an RMS inlet system, the
normal running average power consumptions for safe area and Ex
systems are 2.0 kVA and 2.5kVA respectively. Typical startup
current profiles (from cold) for these two configurations are shown in
and
Figure 3
–1.
Typical startup current profile for safe area system
(240 Vac)
Figure 3
–2.
Typical startup current profile for Ex system (240
Vac)
120 Vac systems will show approximately twice the above currents.
Safe Area System Startup (240VAC)
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
0.0
4.0
8.0
12.0
16.0
Time (s)
RMS
curr
ent
(
A)
Startup at 0.1s
Rotary pump start
RMS heater on
RMS heater cycle
Ex System Startup (240VAC)
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
0.0
4.0
8.0
12.0
16.0
Time (s)
RMS
curr
ent
(
A)
Rotary pump start
RMS heater on
RMS heater cycle
Startup at 0.1s
