IP600

IP600 (Pressure) & IT600 (Temperature) Pneumatic Indicator Controller

A pneumatic indicating controller which can be supplied to provide

single-term (P), two-term (P + I or P + D), three-term (P + I + D), on/

off or differential-gap control action for the control of temperature,

gauge pressure, vacuum, differential pressure or absolute pressure.

The instrument incorporates a flapper/nozzle type of control

mechanism: simple in operation, this unit gives reliable, trouble

free service over long periods without attention.

A small amplifying relay, which houses the restrictor for the nozzle air supply provides the necessary volume of air required by the control valve.

The two and three term controller generates all terms simultaneously.

The proportional band, integral time and derivative time are adjustable over a wide range to enable accurate matching to plant

conditions.

On/off instruments have a sensitivity adjustment equivalent to

approximately 0.25 to 1% proportional band.

Differential gap instruments switch to a maximum output at one

switching point and minimum at the other switching point. The

switching gap, which is spaced equally about the desired value

index, is adjustable between 5% and 100% of the range.

Change of control action entails reversing a lever on the mechanism.

It is not necessary to remove the whole flapper/nozzle assembly.