Pressure Monitor - Hitachi L-2100 Instruction Manual

4.4.2

Pressure Monitor

The number of double-speed section errors in each measurement can be indicated.
A double-speed section error indicates that the pressure did not return to the reference level
(previous pressure) even after double-speed control (an increase of pump motor speed) was
effected to compensate for a pressure drop. This may be caused by formation of air
bubbles in the flow path.
Monitor screen
GLP`
GLP: LOGBOOK=1, PRESSURE M.=2,
2 KEY LOCK=
Select PRESSURE M.
PRESSURE MONITOR
Display the number of double-speed section errors.
ESC
Monitor screen
Resetting occurs on the following occasions.
• On input of [PUMP ON] or [PUMP OFF]
• On activation of contact
• On start of gradient elution
• On reception of start signal from integrator in D-line configuration
• On external start of pump
• On input of [PURGE ON] or [PURGE OFF]
9999 TIMES
4 - 36
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