The King Instrument 7910 series borosilicate glass metering tube offers 70 flow ranges in 7 tube sizes, with a 250mm scale glass tube and 304 stainless steel case. The dual port connections (both horizontal and vertical on each end) allow for a variety of installation options. King Instrument 7910 series rotameters have a fully enclosed borosilicate glass metering tube with a 250mm scale.

In-line 316L fittings and internals or PVC fittings with Hastelloy C-276 internals make the 7910 series rotameter suitable for a variety of general industrial applications. Flow ranges are 0.22 to 132 GPM for water and 0.9 to 350 SCFM for air. Accuracy is ±2% of full scale with 0.5% repeatability and turndown of 10:1 to 12.5:1.

An optional latching reed switch alarm is available. The switch is reed type and uses a biasing magnet to create a latching feature. It is classified as a simple apparatus by UL, FM, etc. and may be suitable for hazardous use when connected to an intrinsic safety barrier. Check your local electrical code for wiring specifications.