Description
Spirax Sarco EP5 electropneumatic positioner is a 2-wire positioner requiring a 4 - 20 mA input signal for linear pneumatic actuators. It compares the controller’s electrical signal with valve position feedback and adjusts the pneumatic signal to the actuator accordingly. This ensures accurate valve positioning at any controller output signal while compensating for pressure differential changes, stem friction, and diaphragm lag. Each positioner includes a mounting kit for installation on a post or yoke in accordance with IEC60534 - 6 - 1. It is compatible with PN1000/2000, 3000/4000, 9000, and other actuators.
Technical Data
| Input signal range | 4 - 20 mA |
|---|---|
| Output signal range | 0 to 100% supply pressure |
| Supply pressure | 20 to 90 psig (1.4 to 6 barg) |
| Stroke range | 0.4” to 4” (10 to 100 mm) |
| Sensitivity | Less than 0.2% of span |
| Linearity | 1.0% of span |
| Hysteresis | Less than 0.5% |
| Input impedance | 200 ohms |
| Maximum current | 50 mA |
| Temperature limits | 0 to 175°F (-15 to +65°C) |
| Enclosure protection rating | IP54 (approximately equivalent to a Nema 3 enclosure); ISP4 intrinsically safe version, compliant with EEx.ia llc T6.T5.T4 (CESI) (approximately equivalent to FM Class I and II, Division 1, Groups A, B, C, and D) |
| Steady-state air consumption | 13.06 ft³/h at 90 psi (0.7 m³/h at 6 bar) |
| Pneumatic connection | 1/4” NPT |
| Electrical connection | PG 13.5 |
Weight
5.5 lb (2.8 kg)
Selection Information
1 - EP5 electropneumatic positioner.
Installation
Complete installation information is provided in the applicable installation and maintenance instructions supplied with the product.
Spare Parts
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0 - 30 psi output pressure gauge
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0 - 60 psi output pressure gauge
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0 - 100 psi output pressure gauge
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Spring and pneumatic tubing kit
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Gasket, diaphragm, and orifice kit
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Booster relay kit
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Pressure gauge block
Local regulations may restrict the use of this product below the conditions specified. Restrictions apply only to standard connections. Spirax Sarco reserves the right to change specifications as part of ongoing product development and improvement.