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Controlled gas flow
The VT gas flow on the SPB(-E) is controlled using the integrated mass flow meter a solenoid
control valve. Flow variations (within physical limits, some minimal quality of gas supply must
be guaranteed) of the gas supply are eliminated and as a result stable conditions for the
temperature regulation are provided.
The gas flow meter is factory-calibrated and the compensation values stored on the on-
board non-volatile flash memory.
Regulated Gas Flow
Channel
SPB
SPB-E
VT
yes
yes
Probe flush gas
no (fixed flow)
yes
Shim Cooling gas
no (fixed flow)
yes
Table 14.5: Controlled Gas Flows
NOTICE
The mass flow controller cannot compensate for poor gas supply or
insufficient input gas pressure.
The new gas flow regulation ensure stable gas flow as long as site planning specifications
for pressurized gas are met.
Multifunction of probe FLUSH gas output
For safety reasons most valves are closed in fault conditions or when the BSMS system is
not powered.
The probe FLUSH gas channel is equipped with a normally open bypass-valve that will
ensure a certain amount of gas output even when the BSMS chassis is powered-off.
This output can be used as simple room temperature backup VT gas source for
configurations where the probe flush gas is not used otherwise (e.g. CryoProbes).
In case of a power failure the room temperature gas prevents the sample inside the
CryoProbe from getting too cold.
Summary of Contents for NMR AV4 BSMS System
Page 1: ...BSMS System for AVANCE NEO User Manual Version 001 Innovation with Integrity NMR...
Page 10: ...Contents x H172203_1_001...
Page 22: ...Safety 22 234 H172203_1_001...
Page 26: ...Transport Packaging and Storage 26 234 H172203_1_001...
Page 42: ...Chassis Mainframe 42 234 H172203_1_001...
Page 46: ...Fan Tray 46 234 H172203_1_001...
Page 55: ...ELCB H172203_1_001 55 234 Figure 8 1 ELCB Front Panel with LED s and Connectors...
Page 69: ...ELCB H172203_1_001 69 234 Figure 8 13 Lock RF Boards Diagnostics...
Page 70: ...ELCB 70 234 H172203_1_001...
Page 120: ...L TRX L 19F 120 234 H172203_1_001...
Page 148: ...BSVT Concept 148 234 H172203_1_001...
Page 166: ...SPB 166 234 H172203_1_001...
Page 172: ...VPSB DC and VPSB DC E 172 234 H172203_1_001 Figure 15 3 Block Diagram of the VPSB DC E...
Page 180: ...VPSB DC and VPSB DC E 180 234 H172203_1_001...
Page 187: ...VTA H172203_1_001 187 234 Figure 16 1 VTA Cable Connectors...
Page 193: ...VTA H172203_1_001 193 234 16 7 Ordering Information See Basic BSVT Configuration 124...
Page 194: ...VTA 194 234 H172203_1_001...
Page 200: ...Nitrogen Level Sensor 200 234 H172203_1_001...
Page 204: ...Radiation Shield Temperature Monitoring MAG RS 204 234 H172203_1_001...
Page 208: ...Installation and Initial Commissioning 208 234 H172203_1_001...
Page 210: ...Operation 210 234 H172203_1_001...
Page 216: ...Replacement of Parts 216 234 H172203_1_001...
Page 222: ...Contact 222 234 H172203_1_001...
Page 226: ...List of Figures 226 234 H172203_1_001...
Page 229: ...Glossary H172203_1_001 229 234 Glossary...
Page 230: ...Glossary 230 234 H172203_1_001...
Page 232: ...Index 232 234 H172203_1_001...
Page 233: ...H172203_1_001 233 234...
Page 234: ...Bruker Corporation info bruker com www bruker com Order No H172203...