Details to know before purchase:
- Element you need to measure. If you have to measure inert elements like water,oil or gas all aour gauges meets your needs, however for agressive elements choose only complete stainless steel gauges. Oxygen need a particular cleaning .
- Range. Since the gauges use to signal the highest accuracy at mid dial, consider to purchase a gauge with doublerange of the pressure at which you normally work (ex work at 5 bar, buy a pressure gauge with range 0-10 bar) Doing this you also avoid shotsin opening
- Diameter of case
- Connection position
- Connection thread. You can simply find with a capìliber: 10mm=1/8"gas / 12,90mm = 1/4"gas / 16,20mm = 3/8"gas / 20,90mm = 1/2"gas or 1/2"NPT
- Accurancy. Ex: if you buy a gauges with range 100 bar and accurancy Kl 1%, means that you can read an error max of 1 bar over the entire scale.
You can follow three way to select the item you need
Using the search field at the top of page
Using the categories tree visible at your left considering that the gauges are listed following this order: model > case diameter > type or position connection
Using the sitemap placed on information menu at footer
Simplified pressure gauge scheme and dial details
Pic.1:The pressure through the connection 1 and pushes on bourdon spring 2 which begin to straighten. The tie rod 3 transmits the movement to the triangular gear 4 who retransmits it to the lancet ring 5.
Pic.2: 1 reference standard, 2 type of spring, 3 accurancy