Mercoid Series DA Operating Options

Select Your Mercoid Series-D Operating Requirements

Please choose from the following choices.

 

Mercoid Series DA Mercoid Series DS
TYPE DA TYPE DS
Adjustable Deadband Fixed Deadband
Fully Automatic, Double Adjustments Fully Automatic, Single Adjustments 
Equipped with two external adjustments, one for setting high pressure operating point, the other for setting low pressure operating point. Deadband, or the difference between high and low set points, is adjustable over full scale. Mercoid’s most popular operating mode, available on most Series D pressure and temperature controls.
Equipped with single adjustment for setting operating point only. A single pointer on scale sets pressure point at which switch action occurs. Fixed deadband is factory set and cannot be altered in the field. Furnished standard for Series D-200 and D-7200, also available on Series D-20, D-30, D-35, D-40, D-80, D-500, and D-900 pressure and temperature controls.
Mercoid Series DR Mercoid Series DL
TYPE DR TYPE DL
Semi-Automatic Semi-Automatic
Manual Reset, Single Adjustments Manual Lock Reset, Single Adjustments
Equipped with a single adjustment for setting operating point to operate the circuit automatically upon a pressure increase or decrease. Push button reset must be operated External manually to restore the circuit to Adjustment original position after automatic operation. Suffix “L,” i.e. DR-31-153L denotes control will operate automatically on increase; suffix “U” denotes control will operate automatically on decrease. Available on Series D-20, D-30, D-35, D-40, D-80,D-500, D-900, and D-7000 pressureand temperature controls. Equipped with a single adjustment for setting operating point. Control will operate at set point only upon a decrease in pressure. Manual lock feature permits circuit to be reset and locked in position. Lock remains in effect until pressure rises above control setting. Lock then releases and circuit is held in reset position until further automatic operation upon pressure decrease. Available on Series D-20, D-30, D-35, D-40, D-80, and D-900 pressure and temperature controls.