Bellofram Transducers Type 1000 Catalog Page
Type 1000
Type 1000
I/P & E/P Transducers
Description
The Type 1000 Transducer is an electro-pneumatic device that reduces a supply pressure to a
regulated output pressure directly proportional
to an electrical input signal. The Type 1000
accepts a wide range of supply pressures,
ranging from a minimum of 3 psig (0.2 BAR)
above the maximum output up to 100 PSIG (6.9
BAR). An integral pneumatic volume booster
is included in the design to provide high fl ow
capacity (up to 12 SCFM/339 SLPM). Model
selections include general purpose, NEMA 4X
Type, extended range, high relief, intrinsically
safe, and explosion proof.
Applications
The Type 1000 Transducer converts an electrical signal to a pneumatic output which can be
used to operate the following:
• Valve actuators
• Damper and louver actuators
• Valve positioners
• Controllers
• Relays
• Air cylinders
• Clutches and brakes
Used in:
• Liquid, gas and slurry processing instrumen-
tation
• HVAC systems
• Paper handling controls
• Textile processing systems
• Energy management systems
• Petrochemical processing systems
Standard Features
• Low Cost
• Built-in Volume Booster
• Small Size
• Field Reversible
• Low Air Consumption
• Mounts at Any Angle
• Convenient External Span & Zero Adjusts
(Except for Explosion Proof Models)
• Light Weight
• Wide Supply Pressure Range
• Low Supply Pressure Sensitivity
Principle of Operation
The Type 1000 Transducer is a force balance
device in which a coil is suspended in the
fi eld of a magnet by a fl exure. Current fl owing
through the coil generates axial movement of
the coil and fl exure. The fl exure moves against
the end of a nozzle, and creates a back pressure
in the nozzle by restricting air fl ow through it.
This back pressure acts as a pilot pressure to
an integral booster relay. Consequently, as the
input signal increases (or decreases, for reverse
acting), output pressure increases proportionally. Zero and span are calibrated by turning easily accessible adjusting screws on the front face
of the unit. The zero adjusting screw causes the
nozzle to move relative to the fl exure. The span
adjusting screw is a potentiometer that limits
the current through the coil. A thermistor circuit
in series with the coil provides temperature
compensation.
Split Ranging
The 4-20 mA input, 3-15 PSIG output model can
be recalibrated to provide 3-9 PSIG or 9-15 PSIG
output, for split ranging applications.
Mounting
The Type 1000 transducers can be pipe, panel,
or bracket mounted in any position. Positions
other than vertical will require recalibration
of the zero adjustment. For maximum output
pressure stability, the Type 1000 should be
mounted in a vibration-free location or such that
vibration is isolated to the X and Z axis shown
on the dimensional drawings.
Field Reversible
All Type 1000 transducers are calibrated at the
factory for direct acting operation but may be
used in the reverse acting mode by reversing
the polarity of the signal leads and recalibrating. When calibrated for reverse acting applications, the Type 1000 transducers provide a
minimum of their full rated output pressure (i.e.,
15, 27, or 30 PSIG) upon input signal failure.
Type 1000 for Extended Range
Description
The Bellofram Extended Range I/P and E/P
Transducers are based on Bellofram’s proven
Type 1000 transducer line - the best selling
transducers in the business.
The large span adjustment range of this line
allows recalibration to fi t applications with
output ranges from approximately 3-35 PSIG
(0.2-2.4 BAR) to 3-145 PSIG (0.2-10 BAR).
The units accept supply pressures up to 150
Type 1000
Transducers
PSIG (10.5 BAR) and provide fl ow capacity to
24 SCFM (677 SLPM).
The Type 1000 I/P and E/P Transducers are
more cost effective and more accurate than
typical high output systems using transducers
coupled to boosting or multiplying relays.
Type 1000 with High Relief
Description
Expanding upon the proven accuracy, reliability, and rugged construction of the Type 1000
General Purpose, these transducers provide
extra fast “blowdown” for a very rapid release
of downstream pressure. The extra relief feature
makes these units suitable for cylinder return
stroke actuation, air hoists, and similar applications requiring fast exhaust. These units accept
supply pressures to 100 PSIG (6.9 BAR), with
output ranges from 1-17 PSIG (0.07-1.2 BAR) to
6-30 PSIG (0.4-2.1 BAR), and provide exhaust
capacities of 7 SCFM (336 SLPM).
< >86
Type 1000 Transducers
Supply Pressure Range
50 PSIG max. for 1-17 psi models
Supply Pressure Sensitivity
Linearity
(terminal based)
Repeatability
Type 1000
General Purpose
3 PSIG (0.2 BAR) above max.
output to 100 psig (7 BAR)
±0.15% of span per
1.5 PSIG (0.1 BAR)
<1.0% of span <1.0% of span <2.0% of span <1.0% of span
<0.5% of span <0.5% of span <0.5% of span <0.5% of span
Type 1000
High Relief
3 PSIG (0.2 BAR) above max.
output to 100 PSIG (7 BAR)
±0.15% of span per
1.5 PSIG (6.1 BAR)
Type 1000
Extended Range
5 PSIG (0.4 BAR) above max.
output to 150 PSIG (10.4 BAR)
(100 PSIG / 7 BAR for 2-60 PSIG /
0.1-4.1 BAR models)
±0.004% of span per
1.0 PSIG (0.07 BAR)
3 PSIG (0.2 BAR) above max.
output to 100 PSIG (7 BAR)
Type 1000
Explosion Proof
±0.15% of span per
1.5 PSIG (0.1 BAR)
Hysteresis
Minimum Flow Rate at
Midrange 100 PSIG / 7 BAR
Exhaust Capacity @ 5 psig
(0.4 BAR) above setpoint
Air Consumption (max) at
Midrange
Port Size
(pneumatic / electric)
Size
inches
mm
Weight
<1.0% of span <1.0% of span <1.0% of span <1.0% of span
12 SCFM (339 SLPM)
(4.5 SCFM for 1-17 psi model)
2 SCFM
(56.5 SLPM)
0.1 SCFM (2.8 SLPM) 0.1 SCFM (2.8 SLPM) 0.07 SCFM (2.0 SLPM)
1/4 NPT and 1/2 NPT 1/4 NPT and 1/2 NPT 1/4 NPT and 1/2 NPT 1/4 NPT and 1/2 NPT
2-1⁄8 X 2-1⁄8 X 4 2-1⁄8 X 2-1⁄8 X 4 2-1⁄8 X 2-1⁄8 X 4 6-13⁄32 X 5-15⁄16 X 7-9⁄16
54 X 54 X 101 54 X 54 X 101 54 X 54 X 101 163 X 151 X 192
2.1 lb. / 0.95 Kg 2.1 lb. / 0.95 kg 2.1 lb. / 0.95 kg 5.2 lb. / 2.4 kg
Type 1000 Dimensional Drawing
12 SCFM
(339 SLPM)
7 SCFM
(336 SLPM)
24 SCFM (677 SLPM)
150 PSIG (10.4 BAR) Supply
(12 SCFM for 2-60 psi model)
2 SCFM
(56.5 SLPM)
12 SCFM
(339 SLPM)
2 SCFM
(56.5 SLPM)
0.1 SCFM (2.8 SLPM)
The Type 1000 has long been a standard in the I/P & E/P industry. With a
built-in booster, the T-1000 provides
a fl ow capacity up to 12 SCFM, making it a versatile transducer for many ap-
plications.
< >87
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