PACE - Model 1410 - Heated Stack Filter Box
From Sample Conditioning
The PACE Heated Stack Filter Box is constructed of 316 Stainless Steel and designed to be mounted in an outdoor environment on an emissions stack. A stainless steel probe extending halfway into the stack is connected to a 3' 150 lb. 304 Stainless Steel flange, drilled and tapped to accept a 3/4' npt fitting. On the opposite side of the flange is a 3/8' tee fitting. One path leads directly to a stainless steel filter housing utilizing a 25 micron filter. The other path is used as an injection port for calibration gas via the 1/4' teflon tube in the heated sample line (not shown). A 1/3 psi check valve is also installed to prevent stack gas from entering the calibration line.
The entire Heated Stack Filter Box is fully insulated. Power is supplied from the PACE Model 1400 Temperature Controller via messenger wires in the heated line. A 120VAC 250 watt finned heater keeps the temperature of the box at a constant 240°F which is regulated through the PACE 1401/2/3 temperature controller. The only maintenance required on the PACE Heated Stack Filter Box is the filter located inside the stainless steel filter assembly.