Fairchild Type Transducer
Flowserve Type Transducer
EPC Type TransducerT1500 Electro Pneumatic Transducer
The T-1500 is a compact force balance transducer that converts an electrical signal to a proportional pressure output for actuators, valves, positioners and other final control elements. Its small footprint and the accessibility of its ports let it go into space-constrained locations, or into a manifold for multi-device control.
What This Model Is
Type EAA-T1500 series I/P and E/P transducers are electronic pressure regulators that convert a variable signal, current or voltage, to a proportional pneumatic output. An integral pneumatic volume booster provides high flow capacity. DIN rail and manifold assemblies are available in kits that give three, five or ten mounting points, so a bank of loops is built as one assembly rather than ten separate instruments.
How It Works
The T-1500 is a force balance device. A coil is suspended in the field of a magnet by a flexure; current through the coil moves the coil and flexure axially. The flexure moves against the end of a nozzle and creates a back pressure by restricting air flow. That back pressure acts as a pilot to an integral booster relay, so output pressure rises proportionally with input. A thermistor circuit in series with the coil provides temperature compensation.
T1500 Electro Pneumatic Transducer On Our Benches
Studio and workshop photographs of the units as built, not renderings.
What You Get From This Model
Manifold mounting for banks of loops
Kits with three, five or ten mounting points turn a row of transducers into a single serviceable assembly.
Ports front and back
Supply and output ports on both faces let the unit be plumbed from whichever side the installation leaves free.
Very low air consumption
3 SCFH at 15 psi (1.0 BAR) output on the standard range build, which matters when dozens of units share one header.
CE-compliant electrical entry
The electrical conduit connection meets CE requirements, and conduit, terminal block and Hirschmann DIN 43 650-A connectors are all catalogued.
Where It Is Used
- Valve actuators and valve positioners
- HVAC systems
- Material handling systems
- Paper handling controls
- Automation systems
- Liquid and gas processing systems
Who Orders It
- Automation builders fitting several air loops into one cabinet
- Plants that need a transducer bank on a common manifold
- Maintenance teams working in tight valve galleries
- Instrument engineers specifying intrinsically safe or NEMA 4X builds
What This Model Fixes
There is no room for a full-size transducer
The small footprint and the accessible ports and adjustments let the unit go into space-constrained locations.
Ten separate instruments are ten separate service jobs
DIN rail and manifold kits give three, five or ten mounting points on one assembly.
Supply pressure moves and the output follows
Supply pressure sensitivity is under 2.5% of span for a 15 psig (1.0 BAR) supply change on the standard range build.
Accuracy has to be stated in a tender
Hysteresis under 0.75%, repeatability under 0.5% and linearity under 0.75% of span are published figures for the standard range.
Features And Specifications
Every figure below is transcribed from the datasheet EAA publishes for this series. Anything not published is not listed.
- Small footprint, compact size
- Manifold mounting configurations
- Built-in volume booster
- Conduit 1/2 NPT or BSPT, terminal block or Hirschmann DIN 43 650-A connectors
- Supply and output ports on front and back of unit
- Low air consumption and external zero and span adjustments
- Field accessible orifice
- Intrinsically safe (FM, CSA, ATEX) and NEMA 4X (FM, CSA) options
| Standard Range | Zero Based | |
|---|---|---|
| Hysteresis | <0.75% of span | <1.0% of span |
| Repeatability | <0.5% of span | <0.5% of span |
| Linearity (independent) | <0.75% of span; <1.0% for fluorocarbon units | <1.0% of span |
| Flow at mid range | 6.5 SCFM minimum at 15.0 psig (1.0 BAR) output, 120 psig (8.3 BAR) supply | 9.0 SCFM minimum at 15.0 psig (1.0 BAR) output, 150 psig (10.3 BAR) supply |
| Maximum air consumption | 3 SCFH at 15 psi (1.0 BAR) output | 18 SCFH at maximum output |
| Exhaust capacity | >1.0 SCFM at 5 psi (0.4 BAR) above set point | >1.0 SCFM at 5 psi (0.4 BAR) above set point |
| Supply pressure range | 5 psi above maximum output up to 120 psig (8.3 BAR) maximum | 0-15 units 25-150 psig (1.7-10.3 BAR); 0-30 units 40-150 psig (2.8-10.3 BAR); 0-60 units 70-150 psig (4.8-10.3 BAR); 0-120 units 125-150 psig (8.6-10.3 BAR) |
| Weight | 1.3 lbs | 1.63 lbs |
| Port size | 1/4 NPT, BSPT, BSPP | 1/4 NPT, BSPT, BSPP |
| Supply pressure sensitivity | <2.5% of span for a supply pressure change of 15 psig (1.0 BAR) | <1.7% of span change in output pressure over the full supply pressure range (0-120 units) |
| Temperature range | -20 F to +150 F | -20 F to +150 F |
| Input signal | 4-20 mA DC, 0-5 VDC, 1-5 VDC, 1-9 VDC, 0-10 VDC, 1-10 VDC | 4-20 mA DC, 0-5 VDC, 1-5 VDC, 1-9 VDC, 0-10 VDC, 1-10 VDC |
| Output range | 3-15, 3-27, 6-30 psig | 0-15, 0-30, 0-60, 0-120 psig |
Selecting Installing And Calibrating
- Mount, then calibrateThe T-1500 can be mounted at any angle but should be calibrated after mounting. For maximum output pressure stability mount it vertically in a vibration-free location, or so vibration is isolated to the X and Z axes.
- Regulate the supplySupply air must be instrument quality and regulated between 5 psi above maximum output and 120 psig (8.3 BAR). Check the supply pressure range table for the build ordered.
- Meet the air quality specificationDew point below 35 F, no particles larger than three microns, maximum oil content 1 ppm. Plug every unused port.
- Connect supply and outputConnect supply to either port marked IN on the base and output to either port marked OUT. Keep pipe sealant out of the piping and the transducer. The second OUT port takes a pressure gauge.
How It Compares With The Alternatives
The standard range T1500 covers 3-15, 3-27 and 6-30 psig from a supply of 5 psi above maximum output up to 120 psig. Where the loop needs regulation down to zero, the zero based build of the same instrument is the one to order. Against the T1000, the T1500 is smaller and manifold-mountable but delivers less flow.
| Model | Distinguishing specification | Best suited to |
|---|---|---|
| T1500 Electro Pneumatic Transducer | 3-15, 3-27, 6-30 psig standard range | Conventional spring-range actuators |
| T1500 Electro Pneumatic Converter | 0-15, 0-30, 0-60, 0-120 psig zero based | Loops that must regulate down to zero |
| T1000 Electro Pneumatic Transducer | Higher flow, four build classes | High flow and hazardous area duty |
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View specifications →Questions About The T1500 Electro Pneumatic Transducer
What output ranges does the standard T1500 cover
3-15, 3-27 and 6-30 psig, from input signals of 4-20 mA DC, 0-5 VDC, 1-5 VDC, 1-9 VDC, 0-10 VDC or 1-10 VDC.
How much air does it pass
A minimum of 6.5 SCFM at 15.0 psig (1.0 BAR) output with a 120 psig (8.3 BAR) supply, and it exhausts more than 1.0 SCFM at 5 psi above set point.
What quality of air does it need
Instrument quality: dew point below 35 F, no particle larger than three microns and a maximum oil content of 1 ppm, regulated between 5 psi above maximum output and 120 psig.
Can several units share one mounting
Yes. DIN rail and manifold assemblies are available in kits providing three, five or ten mounting points.
What does it weigh
1.3 lbs for the standard range build. The zero based build weighs 1.63 lbs.
Request A Price For The T1500
Tell us the input signal, the output range and the electrical termination, and the quotation comes back against the published part number.