E8500 Instruction & Operations Manual
version 1.017
Page 18 of 49
3. Condensate pump. This peristaltic pump operates automatically on a periodic
basis that can be set by the customer to remove the condensed water from
the water trap and discharge it in the back of the instrument. The default
operation is 30 seconds on, 25 minutes off.
4. Line filter. The dried gas sample goes through a disposable fiber filter whose
function is to trap any soot particles from the sample. This filter must be
inspected often especially for oil or coal fired applications.
5. Condensation filter. The primary function of this 2 ¼” diameter filter is to
prevent any residual condensation from reaching the sensors area. This
precaution is particularly important, especially if the analyzer is equipped with
an NDIR sensor bench.
6. Sample pump. This is a high quality diaphragm pump whose function is to
extract a sample from the stack. Its flow rate is adjustable and can be set by
instrument command (pump duty). Typical flow rates are 1.1 – 1.4 liters per
minute.
7. Damper. The last component is the conditioning system is a small damper
whose function is to smooth the flow pulsations generated by the sample
pump. The electrochemical sensors are diffusion type and their accuracy is
affected by significant flow pulsations.
