178 Agilent Restricted Agilent 5110/5100 ICP-OES Service Manual
6 Customer Diagnostics and Problem Solving
Plasma Gauges
Plasma Gauges
RF Water Flow
The RF Water Flow gauge measures cooling water flow through the RF system but only when a
plasma is lit or when the RF Water Flow button is pressed. If the water flow is outside
specification it could indicate a problem with incoming water chiller set pressure or a blockage
in the water pipes or a dirty instrument water filter (right hand side of instrument).
RF Power (kW)
The RF Power Gauge Measures the power generated by the RF Generator to excite a plasma in
a plasma on situation only. The Power is variable and can be set on the Status Page.
Plasma Exhaust (°C)
The Plasma Exhaust Temperature Gauge measures the temperature of the outgoing gases
from the Exhaust flue. The temperature will significantly increase with a plasma running. If the
temperature goes outside specification (too high) this could indicate a problem with the exhaust
flue fan not switched on or inadequate suction.
Plasma Gas Flow
Plasma Gas Flow gauge measures Argon Gas Flow to the outer sheath of the Plasma torch. The
plasma gas maintains the Plasma within the torch. If the gas flow is out of specification this
could indicate a Torch/Torch loader blockage or leak or Gas Control problem with the Gas Box.
Auxiliary Gas Flow
The Auxiliary Gas Flow Gauge measures the Argon gas flow to the Torch. Auxiliary gas is
required to create and sustain the plasma. If the gas flow is out of specification this could
indicate a Torch/Torch loader blockage or leak or Gas Control problem with the Gas Box.
General Gauges
Instrument (°C)
Instrument Temperature Gauge measures the temperature of the instrument (thermocouple
mounted inside instrument control electronics). Temperature outside specification could be as
a result of Laboratory Temperature incorrectly set, Air Cooling Failure of Instrument, or Air
cooling blockage.
Mains Frequency
The Mains Frequency Gauge measures the frequency of the incoming Mains power supply.
Usually it will hover around 60Hz or 50Hz depending on the country. If it is out of specification
this usually indicates a problem with the Consumer Power Grid and not the instrument.
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