T61000 pages

Model T6100 Lock In Place Electro-Pneumatic l/P Transducer

Features

• Locks in "Last Position" to

accurately capture setpoint

• Etremely low drift after power loss

permits transducer to maintain set point

• IP65 Rating to handle moist

applications

• Single part number makes it easy to

specify and cover all your needs

• Superior Construction including a mois

ture resistant PCB and zinc coated

components

Operating Principles

Uniquely, the T6100 "Lock in Last Place"

feature now provides flexibility, reliability and

safety in applications requiring protection from

signal failures to critical control system instru-

ments.

Design oftheT6100 relies on a proprietary

integrated solenoid valve module interposed

between the flapper-nozzle pilot and the

booster section. Upon signal failure, an elec-

trical charge stored within the active electronic

circuit controlling the integrated solenoid valve

module maintains the current to the voice

coil at its last setpoint. Simultaneously, a

high energy pulse closes the solenoid valve,

trapping the signal pressure within the sig-

nal chamber at the last setpoint. The booster

continues to provide its normal forward and

exhaust flow, with the constant signal pressure

now captured and maintained within the signal

chamber.

The electronic circuit activates the solenoid

valve immediately upon detection of a signal

that falls below a base value of 3.5mA. Upon

restoration of the signal, the electronic cir-

cuit sends a high energy pulse to open the

solenoid valve, restoring the pilot section's

pressure control of the signal pressure to

the booster as in a typical transducer. The

electronic detection circuit, in series with the

T6100's signal conditioning circuit, merely

adds an additional voltage drop to the T6100's

normal control loop. Advanced valve orifice

design of the T6100 increases its forward flow

capacity to a minimum of 5-scfm at 21-psig

supply pressure.

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INLET & OUTLET BOTH SIDES

800-334-8422

www.fairchildproducts.com