Thermal dispersion flow switches

The Kayden line of products is based on the thermal dispersion principle of operation. The Classic 800 was conceived to meet the extreme demands of the oil and gas industries, and there are no moving parts to fail, no mechanical trim pots to adjust.

Though often referred to as a thermal dispersion flow switch, thermal flow switch, liquid flow switch or Modbus flow switch, these Kayden products can also be used in level and interface applications. Some level applications include tank high and low level alarms, wet/dry alarm and various other applications involving flow alarms. Another common application is interface control, especially those requiring an oil/water interface switch. Kayden switches are also commonly used in pump protection, seal leak detection and flow/no flow applications.

Highly accurate and reliable, Kayden switches include built-in self-diagnostics and RS485 communications capabilities. The Classic 800 has a 4-20 mA output as standard, dual SPDT relay contacts and an adjustable bypass delay timer. The internal panel displays the status of process conditions.

Both the Classic 800 and Basic 400 models can be used as either a flow switch, level switch or interface switch. There is no need to specify the switch function at time of order. The Classic or Basic can be installed as a flow switch today and configured by the customer to be a level controller tomorrow. With an array of sensor sizes, materials and configurations available including insertion and inline, threaded, flanged and retractable packing gland styles or tri-clamp flange types for food applications, a Kayden model will fit most applications.