Kytölä Model E Acrylic Body Variable Area Flow Meter

Model E is a variable area flow meter machined from a single piece of acrylic (PMMA); the position of the float on the scale shows the flow. It measures liquid and gas and is used on water and air purge lines; the manufacturer states that it is particularly suitable for measuring oxygen flow.

Technical specifications

• Options range from a lowest 2-16 mL/min to a highest 0.5-2.5 L/min for water, and from 0.1-0.8 NL/min to 10-90 NL/min for air.
• The EK model has a nylon valve body and the EH model an AISI 316 valve body; shaft AISI 316, seal nitrile (Viton or EPDM optional).
• Flow control valve included; single tube or blocks of up to 12 tubes possible.
• Accuracy ±5% of full scale (water, 20 °C); maximum pressure 20 bar, temperature 75 °C.
• Inductive alarm sensors and special scales for different fluids can be selected.

Choosing E

The family includes valve-connected flow adjustment, the EA model with alarm and multi-tube ExK blocks. Having the flow to be read fall in the middle of the scale reduces reading error in variable area measurement, so range selection matters.

Tetra determines the scale and connection suited to the fluid (G 1/4, adapter for NPT). Because the instruments are easy to dismantle, seal replacement and cleaning are done on site; a mounting service is provided for sample and purge lines in the analyzer cabinet.