3421

Special features

• Pneumatic compact controller
• Input/output signals between 0.2 and 1 bar
• Supply pressure 1.4 bar (20 psi)
• Compact controller with a mounted depth of 320 mm
• Set point, controlled variable, and system deviation are easy to read off the 100 mm-long vertical flat scale
• Adjusters for set point, positioning value, and manual/automatic switchover can be operated at the front

Accessories

• Type 3804-1 Pneumatic Transmitter for Pressure
• Type 3812-1 Pneumatic Transmitter for Temperature
• Type 4708 Supply Pressure Regulator
• i/p converter
• p/i converter
• Pneumatic remote adjuster

Options

• Version for fixed set point/follow-up control with set point adjuster and internal/external set point selector switch
• Version for follow-up control
• Version for ratio control
• Controller modules for P, PI, PID, or PD control
• Modules for ratio control loops and modules suitable for both P and PI control loops