(for selectors)May 2022 - For the foreseeable future, this product is not currently available to purchase due to the worldwide chip shortage. Please contact us to talk about other possible options to serve your needs.
- CE-certified
- Automatic alignment with stall-sensing circuitry - no mechanical microswitches
- Manual control or remote control via contact closures or TTL logic level signals
- RS-232 bidirectional communication (optional RS-485)
- High speed switching - < 100 ms in EQ model
Exclusive stall-sensing circuitry eliminates problems associated with valve/actuator misalignment. Power to the actuator motor is switched off when the driver pin goes against the stop of the valve cutout - no sooner, no later - and it's all done without any mechanical microswitches. Not only are alignment problems are a thing of the past, you can stock one actuator model for valves that turn 30°, 36°, 45°, 60°, 90°, or anything in between.
During initialization, the valve rotates at moderate speed while the actuator waits to sense the stall. Once the rotation angle has been measured and confirmed by repetition, the angle is memorized and actuation takes place at maximum speed. Valve position memory is maintained even in the event of a power failure.
Some valves are harder or easier than others to rotate, so we
offer five microelectric models with a range of torque specs. As the figure at right illustrates, actuator speed and torque are inversely
proportional. WHICH MODEL DO I NEED? 
Select an item below to view product numbers:
Actuator modelsCables |
Highest speed two position actuators - Model EQ
Standard voltage 24 VDC. Autosensing 24 VDC power supply is included.
| Mounting hardware | Product No. |
|---|---|
| closemount | EQ |
| 2" standoff | EQ2 |
| 3" standoff | EQ3 |
| 4" standoff | EQ4 |
| 6" standoff | EQ6 |
| for use w/existing standoff | EQS |
High speed two position actuators - Model EH
Standard voltage 24 VDC. Autosensing 24 VDC power supply is included.
| Mounting hardware | Product No. |
|---|---|
| closemount | EH |
| 2" standoff | EH2 |
| 3" standoff | EH3 |
| 4" standoff | EH4 |
| 6" standoff | EH6 |
| for use w/existing standoff | EHS |
Medium torque two position actuators - Model EP
Standard voltage 24 VDC. Autosensing 24 VDC power supply is included.
| Mounting hardware | Product No. |
|---|---|
| closemount | EP |
| 2" standoff | EP2 |
| 3" standoff | EP3 |
| 4" standoff | EP4 |
| 6" standoff | EP6 |
| for use w/existing standoff | EPS |
High torque two position actuators - Model ED
Standard voltage 24 VDC. Autosensing 24 VDC power supply is included.
| Mounting hardware | Product No. |
|---|---|
| closemount | ED |
| 2" standoff | ED2 |
| 3" standoff | ED3 |
| 4" standoff | ED4 |
| 6" standoff | ED6 |
| for use w/existing standoff | EDS |
Highest torque two position actuators - Model ET
Standard voltage 24 VDC. Autosensing 24 VDC power supply is included.
| Mounting hardware | Product No. |
|---|---|
| closemount | ET |
| 2" standoff | ET2 |
| 3" standoff | ET3 |
| 4" standoff | ET4 |
| 6" standoff | ET6 |
| for use w/existing standoff | ETS |
RS-232 interface cable
An RS-232 cable is required for controlling an actuator from a computer serial port.
| Description | Product No. |
|---|---|
| RS-232 interface cable | I-22697 |
Multi-drop cables
Multi-drop cables permit a single serial port to control multiple microelectric two position and multiposition actuators. Multi-drop cables have one female DB9 connector and 2 to 8 male DB9 connectors and are approximately 6" long.
Note: An RS-232 interface cable (I-22697) is required for each actuator controlled serially.
| No. of actuators to be controlled |
Product No. |
|---|---|
| 2 | I-22897-02 |
| 3 | I-22897-03 |
| 4 | I-22897-04 |
| 5 | I-22897-05 |
| 6 | I-22897-06 |
| 8 | I-22897-08 |
Plug-and-play cables
Plug-and-play cables will allow a direct connection and control between a specific instrument and a two position microelectric actuator. Contact technical support for cables for other instruments.
| Instrument | Product No. |
|---|---|
| Agilent 6890 GC | V-RA-24VDC-HP6890 |
| Agilent 7890 GC | V-RA-24VDC-HP6890 |
| Varian 3800 GC | V-RA-24VDC-VA3800 |
| Agilent 1100 LC | V-RA-5VDC-HP1100 |
| Waters Alliance LC | V-RA-5VDC-WA2690 |
