StoneL EN34C02RA is an Eclipse SST Normally Closed (NC) Valve Position Monitor designed for discrete valve position feedback in industrial automation systems. This product listing includes four ordering references: EN34C02RA, EN34D02RA, EN34C05RA and EN34D05RA. All four belong to the StoneL Eclipse EN34 family, which uses two solid-state normally closed sensors for monitoring compatible automated valve assemblies.
The StoneL Eclipse platform combines compact valve monitoring equipment with local visual indication and electrical connections. It is commonly associated with quarter-turn pneumatic valve actuators in process industries. However, buyers should confirm the complete ordering code, installation arrangement and electrical compatibility before selecting a replacement.
StoneL EN34C02RA Eclipse SST NC Valve Position Monitor
Automated on/off valves are important components in industrial process control. Control systems often need confirmation that a valve has reached its intended open or closed position. Valve position monitors provide electrical feedback that can be interpreted by compatible controllers and monitoring systems.
The StoneL Eclipse EN34 configuration incorporates two solid-state normally closed sensors. The sensor arrangement differs from the EN33 normally open version and the EN44 NAMUR configuration. These distinctions are important because the electrical behavior of the sensing elements must match the receiving control circuit.
Eclipse products use a compact modular design suitable for compatible actuator mounting arrangements. The platform also provides visual valve position indication, allowing personnel to identify valve status locally. Installation requirements and the selected visual indicator must be considered together with the sensor configuration.
For maintenance replacements, matching the complete product code helps reduce the risk of ordering an unsuitable configuration. Differences in enclosure designation and conduit entries can affect the physical installation even when the sensing function remains the same.
Available StoneL Eclipse EN34 Models
Four EN34 ordering configurations are included in this WooCommerce variable product. Each model should be maintained as a separate variation and SKU. The following table summarizes the manufacturer-defined ordering characteristics.
| Model | Sensor Type | Enclosure Code | Conduit Entries |
|---|---|---|---|
| EN34C02RA | 2 × SST NC | C – North American | 2 × 1/2-14 NPT |
| EN34D02RA | 2 × SST NC | D – International | 2 × 1/2-14 NPT |
| EN34C05RA | 2 × SST NC | C – North American | 2 × M20 |
| EN34D05RA | 2 × SST NC | D – International | 2 × M20 |
Important: C and D are manufacturer ordering designations, not proof that every individual unit carries a particular hazardous-area approval. Confirm the exact device markings and applicable approval documents before installation.
Technical Information
| Parameter | Description |
|---|---|
| Brand | StoneL / Valmet |
| Product Family | Eclipse EN34 |
| Sensor Configuration | Two SST normally closed sensors |
| Position Indicator | RA – Red closed / green open |
| Conduit Options | Two 1/2-14 NPT or two M20 entries |
| Typical Application | Automated on/off valve position monitoring |
Specific operating voltage, sensor load limits, environmental protection and certifications should be verified against the applicable manufacturer installation manual. These requirements may affect compatibility with existing PLC, DCS or field wiring arrangements.
Key Features and Functions
Dual Normally Closed Solid-State Sensors
The EN34 sensing module contains two SST normally closed sensors. These provide discrete switching information when used with compatible valve position targets and control circuits. Correct interpretation of the NC switching behavior is essential during replacement or commissioning.
Compact Eclipse Monitoring Platform
The Eclipse product family integrates electronic sensing with a compact valve-mounted arrangement. Its modular design is intended for compatible pneumatic actuator accessories. The exact mounting kit and mechanical interface should be checked before installation.
Local Visual Position Indication
The RA indicator configuration provides red indication for the closed position and green indication for the open position. This gives operators a convenient visual reference during inspections and routine maintenance.
Different Conduit Entry Options
The 02 configuration uses two 1/2-14 NPT conduit entries, while the 05 configuration uses two M20 entries. These alternatives allow buyers to select a product that matches the cable connection arrangement required by the installation.
Industrial Applications
StoneL Eclipse EN34 monitors may be used with compatible automated on/off valve assemblies across process industries. Typical environments include oil and gas facilities, petrochemical plants, chemical processing, power generation, water treatment, pulp and paper, and industrial utility systems.
Valve position monitoring can support operating sequence confirmation, control room status displays and equipment maintenance. The specific application depends on the valve actuator, electrical interface and process control architecture.
For installations in classified hazardous locations, engineering personnel must verify the complete model’s approvals and follow the applicable installation instructions. General product-family information should not be used as a substitute for certified documentation.
StoneL Eclipse EN34 Model Selection Guide
Step 1: Confirm the sensor function. Verify that the existing control system requires SST normally closed sensors. Do not replace an EN33 normally open model with an EN34 model without checking the circuit requirements.
Step 2: Identify the enclosure code. Check whether the original unit specifies C or D. These designations are associated with different manufacturer ordering configurations.
Step 3: Verify the conduit entries. Select 02 for the corresponding NPT arrangement or 05 for the corresponding M20 arrangement.
Step 4: Confirm the visual indicator. The RA option identifies red-closed and green-open indication. Check that this matches the required operating display.
Step 5: Review installation compatibility. Compare mounting hardware, actuator interface, wiring arrangement, electrical requirements and environmental conditions.
Step 6: Request a quotation. Provide the complete StoneL model number, required quantity, delivery destination and any available nameplate photographs.
Why Choose Wuhan Yuli Automation?
Wuhan Yuli Automation Technology Co., Ltd. supplies industrial automation equipment and components to international customers. Our portfolio includes StoneL valve monitors, valve positioners, controllers, industrial communication modules, power supplies and related process automation products.
We focus on new and original products and offer a minimum one-year warranty under our standard sales commitment. Our team can assist with model identification, sourcing inquiries, quotation preparation and international order coordination.
Explore our StoneL Eclipse EN33 SST NO Valve Position Monitor for the normally open version. You can also browse our industrial automation product catalog.
For official manufacturer information, visit the Valmet StoneL Eclipse product page and review the official Eclipse EN installation manual.
Frequently Asked Questions
What is StoneL EN34C02RA?
StoneL EN34C02RA is an Eclipse valve position monitor with two SST normally closed sensors, a C enclosure configuration, two NPT conduit entries and red-closed/green-open visual indication.
What is the difference between EN33 and EN34?
EN33 uses two SST normally open sensors, while EN34 uses two SST normally closed sensors. The appropriate version depends on the control circuit requirements.
What is the difference between EN34C02RA and EN34D02RA?
Both have the same EN34 sensing function and 02 conduit arrangement. However, their C and D enclosure ordering designations differ and must be checked against installation requirements.
How do EN34C05RA and EN34D05RA differ?
Both use the 05 conduit configuration with two M20 entries. Their enclosure ordering codes differ, so the complete product specification should be verified before purchasing.
Can an EN34 monitor replace an EN44 NAMUR monitor?
Not without engineering verification. EN34 uses SST normally closed sensors, while EN44 uses NAMUR sensing technology. Their electrical interfaces are different.
How can I order a StoneL Eclipse EN34 monitor?
Contact Wuhan Yuli Automation with the exact model number, quantity and delivery destination. Our team can assist with identification, availability inquiries and quotations.
Request a Quote – StoneL Eclipse EN34
Looking for EN34C02RA, EN34D02RA, EN34C05RA or EN34D05RA?
Contact Wuhan Yuli Automation for model verification, current availability, pricing and international shipping assistance.
Email: sales@wuhanyuli.com
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