MAO/TRACEGAS/S1 - Instrument problem

Instrument was not operating correctly and unit was left operating to maintain flow 
balance at the inlet. Instrument suffered severe corrosion of the flash lamp. The flash lamp 
was replaced with a new spare and this worked intermittently.

Do not use data

• SO2 flag string as an integer value(so2_flags)
• Reaction chamber temperature(reaction_chamber_temp)
• PMT voltage(pmt_volt)
• Sulfur dioxide (SO2) mixing ratio calculated with nominal sensitivity correction(so2)
• Pressure compensation state(pressure_compensation_state)
• Instrument sample state(gas_mode_state)
• Instrument test LED state(test_led)
• Averaging time interval(averaging_time)
• Length of each flag string in so2_flags field(length)
• Instrument automatic gain control(automatic_gain_control)
• Instrument lamp setpoint(lamp_setpoint)
• Instrument SO2 background correction(so2_background_correction)
• Instrument temperature compensation state(temperature_compensation_state)
• Instrument PMT status(pmt_status)
• Distance to the center of the corresponding range bin(range)
• Instrument purge mode state(purge_mode_state)
• Measure of the current lamp intensity as a percentage of the nominal maximum(lamp_intensity)
• Instrument SO2 coefficient(so2_coefficient)
• Internal instrument temperature(internal_temp)
• Instrument flash lamp state(flash_lamp_state)
• Main flow rate(flow)
• Lamp voltage(lamp_volt)
• Derived pressure(pressure)