High Tech Systems & Equipment Inc. - Systems & Equipment 
Description
Eurotherm EA20 Low Torque Actuator:
EA21, EA22, EA22-5, EA23
Eurotherm EA20 Datasheet (PDF)
The Eurotherm EA20 is working in conjunction with primary loop controllers, these low torque non-spring return actuators will proportionally position fuel valves, butterfly valves, dampers or other similar devices. The output shaft moves in both directions and can stop at any point in the stroke. The hardened steel crankshaft is driven through a train of precision hobbed gears sealed in oil. This reliable actuator is driven by a shaded pole motor completely submerged in oil and sealed in an aluminum case, minimizing maintenance.
Four models are available featuring a standard 100ž internal feedback slidewire and a selection of travel time and rotation limit. Not available with end limit switches, some models have auxiliary switches and a variety of optional features. The Eurotherm EA-20 Series are UL and cUL or CSA listed, except for models with built-in transformers. CSA listed models are: EA21-00003-000-0-00, EA22-00000-000-0-00. It is compatible with the VB-7000- and VB-9000 valves in this catalog.
FEATURES:
- Proportional actuators with built-in feedback potentiometer
- Open/Close contact closure input
- 240/120/24Vac models available
- 50 in-lbs torque, optional NEMA 4
- Compatible with VB series valves
TECHNICAL SPECIFICATIONS:
| Torque: | 50 in-lbs |
| Shaft rotation: | Reversible proportional – 90º or 180º travel limit |
| Dimensions: | 7″ H x 5-3/8″ W x 6-5/16″ D |
| Weight: | 8lbs. |
| Case: | Die cast aluminum with two Knockouts on each side |
| Temperature: | -40º to 136ºF (-40º to 58ºC) |
| Humidity: | 5 to 95% RH, non-condensing |
| Power Consumption: | 28 watts |
| Mounting: | Upright |
| Auxiliary Switch: | Adjustable SPDT snap acting Factory set to close at one contact and open the other at end of clockwise rotation |
