Measuring a filter bag isn’t just about checking the length and diameter—it’s more involved than that. At Albarrie the rule of thumb to ensure your filter fabric is a proper fit with your baghouse, you need to measure multiple areas carefully. Begin by measuring the flat width while ensuring the seam is in the middle of the bag when it’s laid out smoothly. Then, measure the full length from the top B-binder to the bottom seams, keeping the bag under tension to avoid slack in the measurement. Understanding the diameter is also essential, as it must match the cage and fit firmly into the cell plate hole. Albarrie adheres to the ISO 9001:2015 quality standard, ensuring that each filter bag meets the highest levels of quality and performance. This commitment reflects our focus on understanding and addressing customer needs to deliver complete satisfaction.
Albarrie Key Measurements for measuring Filter Bags
There are three critical dimensions needed when measuring a filter bag for your baghouse:
Cell Plate:
This is the diameter of the hole in the baghouse cell plate where the snap band of the bag fits. It’s best to measure the cell plate hole standing up if possible. You can utilize a caliper if available. Thickness of the cell plate can also help you determine with what kind type of b-binder is required. If caliper is not available, tape measure flat across the widest part of the hole to get an accurate measurement to the nearest 1/16 inch.
Bag Body Diameter (Flat Width):
Lay the bag flat, smooth out any folds, and measure across the mid-section. This gives you the flat width, which can then be used to calculate the diameter. For example, you lay the bag flat and ensure the seam is in the centre a flat width of 9 3/8″ corresponds to a diameter of approximately 9.375″.
Overall Bag Length:
Measure from the snap band (top of the bag) to the top stitch or seam at the bottom of the bag. Be sure to pull the bag tight with no sag and always measure along the seam for consistency. For felt bags, hold the bag in the air while measuring.
Measuring by Baghouse Type
Different types of baghouses require slightly different measurement techniques:
Pulse Jet Baghouse
Measure from the B-binder (snap band) to the first seam of the bag.
Apply proper tension on both ends to ensure accurate length.
Start measuring from the 1-inch mark on your tape to avoid distortion from the metal tab.
Note additional features such as:
Fabric cuffs (3-4 inches)
Wear strips at the bottom (3-5 inches)
You can also measure the filter cage directly if the bag is unavailable.
Shaker Baghouse
Measure from the B-binder to the last seam of the bag.
Follow the same guidelines as above regarding tape tension and start point.
Apply proper tension on both ends to ensure accurate length.
Start measuring from the 1-inch mark on your tape to avoid distortion from the metal tab.
Note additional features such as:
Fabric cuffs (3-4 inches)
Wear strips at the bottom (3-5 inches)
You can also measure the filter cage directly if the bag is unavailable.
Reverse Air Baghouse
Measure the existing bag’s length and diameter.
Use the 1-inch offset for accurate tape readings.
When measuring a filter bag, always ensure to fully extend and measure its length—whether it features rings, rope, or a snap band. This will provide the most accurate measurement for your quote.
The number of rings and spacing between helps determining the sizes.
Additional Checks
Check Cage Details:
Understand the number of vertical wires and the overall cage design to ensure compatibility and the type of the filter media needed.
Fitting Check: Ensure the bag snaps securely into the cell plate and the cuff should not turn.
