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
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