Kytölä 3630 Constant Flow Regulator (Gas and Water)

3630 is a regulator that keeps a preset flow constant even when supply or back pressure fluctuates. It is used on gas sample lines, purge gas supplies and cooling water circuits, where flow must not affect analyzer performance.

Options

• For water, a lowest range of 15-80 mL/min and a highest of 0.2-1.6 L/min.
• For air, a lowest range of 0.5-2.5 NL/min and a highest of 10-50 NL/min.
• Special scale option for different fluids.
• The manufacturer specifies a robust stainless steel construction for this product.
• The 3631 model with alarm output offers the same flow ranges and gives a warning when the setting is exceeded.

Choosing 3630

Because the instrument has its own indicator, the setting can be monitored in the field. Set options are offered between 0.5-2.5 NL/min and 10-50 NL/min on the gas side, and from the mL/min scale up to 1.6 L/min on the liquid side; see the manufacturer's data sheet for details.

The regulator is not a measuring instrument but a flow limiter, so it is considered together with a flow meter at points where the sample or flushing flow to the analyzer must remain constant. Whether the fluid is gas or liquid determines the range selection.

Tetra determines the range according to line pressure and the required constant flow, places the regulator in the gas path in the analyzer cabinet and verifies the setting during commissioning. Checks for setting drift over time and spare parts supply are carried out locally.