ALFACOM ENGINEERING LTD.
EAA 500X I/P and E/P Transducers
EAA 500X electro-pneumatic transducers convert an electrical current or voltage signal into a proportional pneumatic output pressure. Select the model by the controller output signal and the pressure range required by the receiving equipment.
EAA 500X I/P and E/P Transducers · ALFACOM catalogue
Electrical Signal to Pneumatic Pressure
I/P versions accept a current signal; E/P versions accept a voltage signal. Match the input and output ranges to the controller and the connected pneumatic equipment.
The 500-AC model accepts 4–20 mA and provides 3–15 psi output, approximately 0.2–1.0 bar. Other configurations are listed below.
Model Selection
| Model | Input signal | Output pressure, bar |
|---|---|---|
| 500-AA | 4–20 mA | 0.2–0.6 |
| 500-AB | 4–20 mA | 0.6–1.0 |
| 500-AC | 4–20 mA | 0.2–1.0 |
| 500-AD | 4–20 mA | 0.2–1.8 |
| 500-AE | 4–20 mA | 0.4–2.0 |
| 500-AF | 4–20 mA | 0.1–1.2 |
| 500-BC | 10–50 mA | 0.2–1.0 |
| 500-BD | 10–50 mA | 0.2–1.8 |
| 500-BE | 10–50 mA | 0.4–2.0 |
| 500-CC | 0–5 VDC | 0.2–1.0 |
| 500-CD | 0–5 VDC | 0.2–1.8 |
| 500-CE | 0–5 VDC | 0.4–2.0 |
| 500-DC | 1–9 VDC | 0.2–1.0 |
| 500-DD | 1–9 VDC | 0.2–1.8 |
| 500-DE | 1–9 VDC | 0.4–2.0 |
| 500-AG | 4–20 mA | 0.14–4.1 |
| 500-AH | 4–20 mA | 0.2–8.2 |
| 500-BF | 0–60 mA | 0.15–8.2 |
| 500-CF | 0–5 VDC | 0.14–4.1 |
| 500-EH | 0–10 VDC | 0.2–8.2 |
Bar values follow the supplier ordering table. High-range versions 500-AG, 500-AH, 500-BF, 500-CF and 500-EH have factory-calibrated output ranges. Confirm final range adjustment and configuration for the ordered unit.
How to Select a Transducer
Provide the electrical input signal, required output-pressure range, available air-supply pressure, air demand of the receiving equipment, connection requirements and installation environment. Check that the electrical load is compatible with the controller output.
ALFACOM can assist with model selection. Confirm the requested configuration, quantity, availability and lead time when ordering.
Frequently Asked Questions
Are all 500X models interchangeable?
No. Models differ in input signal and pneumatic output range. Match the full model code to the control system and receiving equipment.
Does output pressure replace the need for a compressed-air supply?
No. The transducer converts the control signal using a suitable pneumatic supply. Confirm supply requirements and the downstream air demand for the selected unit.
What information helps identify an existing unit?
Send a nameplate photograph, model code, controller signal, output-pressure range, available air pressure and connection details.
Technical Datasheet
Review the EAA 500X model-selection table and output-range notes.
Discuss Your Application
Send your requirements or a photo of the existing equipment for technical assistance and a quotation.
Availability and lead time are confirmed for the requested model and quantity.