PFD-1 type attempts to prevent pressure sampler Being able to self-cleaning device is a measuring device attempts to prevent, can save a lot of cleaning workers. The sampler installation requirements: Sampler must be mounted vertically on the process piping or equipment. When there is trouble, please take a long sampling tube, take a long tube with 11/2 gas pipe, then the angle between the horizontal tube length should be greater than or equal to 60 ° sampler itself still needs to be installed vertically. Under the conditions, with a 1/2 gas pipes hanging out pipe 300mm long straight before seamless steel should be used to φ14 × 2 meter.