Injection Valve; Valve Drives And Valves - General Remarks; Injection Valve Flow Path - Thermo Scientific Accela Open Autosampler Hardware Manual

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Installing the Accela Open Autosampler

Injection Valve

Injection Valve
Valve Drives and Valves – General Remarks

Injection Valve Flow Path

Standard LC Injection Valve, Cheminert 6-Port
50 Accela Open Autosampler Hardware Manual
Figure 46. Valve needle penetration depth
The ball-spring loaded needle holder presses the square cut needle tip firmly against the
bottom of the valve body. This ensures a constant seal during the injection process.
This section contains information about the injection valve.
An Accela Open Autosampler can be equipped with one LC injection valve connected and
controlled through the auxiliary interface (AUX). If you must configure more than one valve,
or if an auxiliary interface is occupied by another module, such as a dilutor, then the
autosampler requires multiposition or serial valve drives. The serial valve drives are connected
at MODBUS interface.
The Accela Open Autosampler is equipped with the control board APR Control-xt, which
provides two auxiliary interfaces, AUX1 and AUX2. You have the choice to connect one more
valve drive.
The six-port valves are connected to the detection system according to the flow paths as
shown in Figure 47.
The standard LC injection valve is a six-port, two-way switching valve with a flat rotary plate
and has a special needle guide (Figure 47).
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