No beam on an MS instrument - WKB922
Article number: 922
SYMPTOMS
- For an acquisition, the chromatogram is constant at zero
- No beam is seen—neither on the tune page when infusing nor with the LC pumping
ENVIRONMENT
- Xevo TQ-S
- Quattro Premier
- Quattro Premier XE
- Quattro LC
- Quattro LCZ
- Quattro micro API
- Quattro Ultima
- 3100 Mass Detector
- ACQUITY SQD system
- SQ Detector
- ACQUITY TQD system
- TQ Detector
- SQ Detector 2
- Xevo TQ MS
- Xevo TQD
- Xevo TQ-S
- Xevo TQ-S cronos
- Xevo TQ-S micro
- Xevo TQ-XS
- ZQ 2000
- ZQ 4000
- ZMD
- LCT
- LCT Premier
CAUSE
The isolation valve is closed.
FIX or WORKAROUND
- Open the isolation valve.
ADDITIONAL INFORMATION
LCT, LCTPREMIER, LCTPREMXE, QUATPREMXE, QUMICRO, QUPREMIER, XEVOTQ, XEVOTQIVD, XEVOTQS, XEVOTQSIVD, XEVTQSMIVD