1100 Series Nano Pump Service Manual 195
Introduction to the Nano Pump 5
Hydraulic Path Overview
The nano pump is based on the Agilent 1100 binary pump, and performs all
the functions necessary for a nano flow solvent delivery system. Basically,
these functions are:
• Low Pressure Metering and High Pressure Delivery
• Solvent Compressibility Compensation
• Variable Stroke Volume
• Column Flow Measurement and Control
Low pressure solvent metering, and high pressure solvent delivery, are
accomplished by two pump channels, each capable of delivering a maximum of
2.5 ml/min flow at up to 400 bar pressure.
Figure 37 Overview of the Nano Pump
NPM boar
Pump drive
Outlet valve
Leak sensor
Power supply
Active inlet valve
Damper
Fan
Pump head A
Solvent selection valve
Pump head
Solvent selection valve
Flow senso