Endress+Hauser Analytik Jena PlasmaQuant MS - Behavior in case of ring plasmas

PlasmaQuant MS product family Safety instructions
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The PlasmaQuant MS has an interlock system which is designed to extinguish the
plasma if either the plasma compartment lid or the interface door is opened. The
device will also extinguish the plasma when the flow rate of the cooling water or of the
argon gas and the extraction output drop below the required minimum.
Nevertheless, this device can potentially affect pacemaker function. If you have a
pacemaker or similar implanted device, consult your physician before using this device.
Observe the following notes:
 Do not attempt to bypass the interlock system.
To ensure safe torch operation, you must not ignite the plasma unless the following
conditions are met:
 The inner plasma compartment lid and interface door are closed and latched.
 The torch is in working position.
 Sufficient water flow is provided.
 Argon flow is adequate.
 The exhaust unit is switched on. The extraction output is within the range specified
in section "Exhaust unit" (p. 34).
The above mentioned components are backed up by several interlocks. Unless the
reliable functioning of these components is guaranteed, the plasma will not be ignited
or it will be extinguished automatically if a component reports a malfunction.
 The viewing window and the UV shield incorporated into the instrument RF
enclosure enables you to view the plasma and operate the instrument without
being exposed to unsafe levels of UV radiation. Never violate the interlocks.
 Before opening the plasma compartment lid or interface door, always extinguish
the plasma from the software.
 There are two ports for sample introduction on the front and on the right-side of
the instrument. Do not look through these openings directly into the plasma.
 Allow the torch, cones, coils, interface, and torch compartment to cool before
carrying out any work in this area, or wear heat-resistant gloves.
2.5.5 Behavior in case of ring plasmas
In the following situations, press the orange plasma off button (on the right side of the
instrument) immediately to prevent the torch from melting:
 The plasma produces loud noises (crackles).
 The shape of the plasma changes considerably and a bright ring is visible on the
inside of the coil.
 Torch parts begin to glow.
In the pre-ignition phase, a light pink discharge is normal.