Dual Channel Liquid Flow
+ Dry Line Indication


Pump Protection
Dry Line Indicator
Dry Line Alarm
Liquid Flow Switch

Application Background:

It is often desirable to monitor the flow of a liquid being pumped in a process. In addition to metering the fluid, a simple flow switch can provide confirmation of flow or flow at a minimum acceptable volume for proper operation. For added pump protection, a dry line detector, indicator, or alarm is an ideal feature, especially for larger, expensive pumps in critical applications.

Application Solutions:

A flow switch with dual channels has the capability of setting two discrete flow set points. Normally the first channel would be set for “no flow” or “dry line” condition and the second channel for the desired flow set point or some minimum flow to prevent the pump from cavitations.

With a single process connection into the inlet flow pipe (MNPT or flange), a Dual Channel Versa-Switch from Delta M Corporation can provide true pump protection.

Pump Protection with Dry-line Indication

For full details see Section 4.4.5 of the VS5100 manual
for the Dual Channel Liquid Flow With Dry Line Indication Calibration procedure

Recommended Products:

VERSA-SWITCH® – VS5100 Series Premium Flow/Level/Temp
Dry Line Indication - Chemical Injection Monitor
Safety Relief Valve Monitor - Soot Blower Feed Water Monitor
Rotating Equipment Lubrication - Vapor Recovery Monitor
Gas Booster Monitor - Exhaust/Air Purge Monitor
Steam Trap Level Control - Foam Control in Tanks
Water Detection in Fuel Tanks - Tank Liquid Agitation
Interface Detection
  • User Selectable Power – 110/220VAC/24VDC
  • Optional Remote Electronics for easy setup
  • Nearly any Process Connection - Custom or Common
  • Wide operating temperature range up to 850F
  • 2nd Channel for Detection of: Dry Lines, 3 Phase Interface
         Agitation, Level & Flow, Temperature or Unit Diagnostics
  • Two year workmanship warranty