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Electro-Pneumatic
Transducers -
Type i2P-100
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- Low Pneumatic Supply Consumption
- Approved for use with Natural Gas
- High Output Capability and
Rangeability
- Split Range
- Corrosion Resistant
- Tolerant of Dirty Supply Medium
- Easy Maintenance
- Vibration Resistance
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Electro-Pneumatic
Transducers -
Type 546
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The Type 546 transducer receives a
direct-current input signal and use a torque motor, nozzle-flapper,
and pneumatic relay to convert the signal to a proportional
pneumatic output signal. Nozzle pressure, which operates the relay,
is also piped to the torque motor feedback bellows. This provides a
comparison between input signal and nozzle pressure and corrects
errors in nozzle pressure.
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Electro-Pneumatic
Transducers -
Type 646
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Electro-pneumatic
transducers use a patented converter module that converts a 4 to
20 milliampere input signal to a proportional 3 to 15 psig (0.2
to 1.0 bar) pneumatic output signal. Small size. Vibration
resistance. High output capability. Low air consumption.
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Electro-Pneumatic
Transducers -
Type 846
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Electro-pneumatic
transducer accepts an electrical input signal and converts it to
a pneumatic output signal. The transducer includes a patented
deflector/nozzle design that consists of two nozzles positioned
so that the constant air flow exiting the supply nozzle.
Vibration resistant. Tolerant of dirty supply air.
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Position
Transmitters -
Type 4200
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The Type 4200 electronic position
transmitter combines Fisher’s field-proven electronic and
mechanical expertise in a versatile, accurate instrument that senses
the position of a device, and sends a standard (4 to 20 milliampere)
output signal to an indicating device. The instrument is available
as a transmitter with integral high and low electronic travel limit
alarms, as a transmitter only, or with electronic travel limit
alarms only.
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Trip
Valve -
Type 377
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The 377 Series pressure-sensing trip
valve is used for control applications where a specific
valve/actuator action is required when supply pressure falls below a
specific point. When supply pressure falls below the trip point the
trip valve causes the actuator to fail up, lock in the last
position, or fail down. When the supply pressure rises above the
trip point, the 377 Series trip valve automatically resets, allowing
the system to return to normal operation. The trip valve can be
top-mounted on a manifold, yoke-mounted, or bracket-mounted to match
the application requirements.
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Volume
Boosters -
Type 2625 and 2625NS
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Volume
booster used in conjunction with a positioner on a throttling
control valve to increase stroking speed. The booster
incorporates fixed deadband, soft seat construction and an
integral bypass restriction to eliminate positioner saturation
problems that can occur with volume boosters that do not have
these features. Fast response. Adjustable response. Efficient
operation.
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