YKL Series OEM Displacement Sensor by SmartGas

Overview

The YKL Series OEM Displacement Sensor is a high-reliability, compact linear position transducer engineered for integration into industrial gas detection systems, environmental monitoring enclosures, and automated safety control panels. Designed and manufactured under SmartGas’ quality system in Germany, this sensor employs non-contact magnetostrictive or LVDT-based sensing architecture—depending on variant—to deliver stable, drift-free analog and digital position feedback across its full 540 mm stroke range. Its core function is to monitor mechanical displacement of critical components such as gas valve actuators, damper linkages, or vent flap mechanisms within hazardous or regulated environments. Unlike consumer-grade potentiometric sensors, the YKL Series avoids wear-related signal degradation through solid-state sensing elements and hermetically sealed construction. It operates independently of ambient gas composition, making it suitable for deployment alongside electrochemical, PID, or NDIR gas sensing modules without cross-interference.

Key Features

• True OEM-optimized form factor: 43 mm diameter × 39 mm axial length, enabling seamless integration into space-constrained gas alarm housings and modular detector assemblies.
• Dual-output capability: Factory-preset analog output (selectable 0–10 V or 4–20 mA) synchronized with RS485 Modbus RTU digital communication—eliminating need for external signal conditioning or protocol translation.
• Robust environmental resilience: IP67-rated aluminum alloy housing with stainless steel pressure cap ensures resistance to dust ingress, condensation, and incidental water exposure typical in outdoor or semi-industrial monitoring sites.
• High metrological stability: Repeatability of ±0.02 % of full scale and linearity error ≤±0.1 % FS support traceable calibration workflows compliant with ISO/IEC 17025-accredited laboratories.
• Wide operating temperature range (–20 °C to +70 °C) enables deployment in unconditioned enclosures—from rooftop HVAC ducts to wastewater treatment sump chambers—without thermal drift compensation circuitry.
• Integrated M30×1.5 threaded body with radial mounting flange simplifies mechanical alignment and torque-controlled installation per DIN EN 61000-6-2 EMC guidelines.

Sample Compatibility & Compliance

The YKL Series is compatible with all standard industrial gas detection platforms requiring mechanical actuator feedback, including but not limited to: solenoid-operated shutoff valves (e.g., in natural gas leak mitigation), pneumatic damper position verification in ventilation safety interlocks, and mechanical flag-based status indication in fixed-point toxic gas monitors. It complies with CE marking requirements under the EU Electromagnetic Compatibility Directive 2014/30/EU and Low Voltage Directive 2014/35/EU. While the sensor itself does not carry ATEX or IECEx certification, its intrinsic design supports Class I, Division 2 (CID2) or Zone 2 system-level certification when installed per manufacturer-specified separation distances and cable routing protocols. Documentation includes RoHS 2011/65/EU declaration and REACH SVHC screening report.

Software & Data Management

The embedded Modbus RTU interface supports direct polling by programmable logic controllers (PLCs), SCADA HMIs, or centralized environmental data loggers without middleware. Register maps are preconfigured per Modbus function codes 03h (read holding registers) and 06h (preset single register), with displacement value stored as a 16-bit signed integer (scaling: 0.1 mm per LSB). SmartGas provides a free Windows-based configuration utility (YKL-ConfigTool v2.1) for field adjustment of zero offset, output scaling, and communication baud rate (9.6–115.2 kbps). All configuration changes are logged with timestamp and user ID in non-volatile memory, satisfying audit trail requirements under GLP and FDA 21 CFR Part 11 when used in validated environmental monitoring systems.

Applications

• Position verification of emergency gas isolation valves in refinery perimeter monitoring networks.
• Real-time feedback for automatic dilution ventilation control in laboratory fume hood interlock circuits.
• Stroke monitoring of explosion-proof purge dampers in analyser shelters located in Zone 2 classified areas.
• OEM integration into portable multi-gas calibrators where piston displacement correlates to certified span gas volume delivery.
• Calibration reference in gas chromatography carrier gas flow regulators requiring mechanical feedback loop closure.

FAQ

Can the YKL Series be used in explosive atmospheres?
No—the sensor is not intrinsically safe or explosion-proof rated. It may be deployed in Zone 2 or Class I, Division 2 systems only when installed per IEC 60079-14 wiring practices and verified via third-party system-level hazard assessment.
Is factory recalibration required after mechanical shock?
No—its magnetostrictive or LVDT core exhibits no zero shift following shocks up to 50 g (per IEC 60068-2-27), provided mounting hardware remains torqued to specification.
Does the sensor support HART protocol?
No—only Modbus RTU over RS485 and analog voltage/current outputs are supported. HART-capable variants are available under custom OEM agreement.
What is the minimum bend radius for the standard cable?
The standard 2 m shielded PVC cable (AWG24, 4-core) has a dynamic bend radius of 50 mm; for continuous flex applications, SmartGas recommends the optional PUR-jacketed torsion-resistant cable option.
How is traceability maintained during production calibration?
Each unit receives a unique serial number laser-engraved on the housing, with calibration certificate (EN ISO 10012-compliant) issued against NIST-traceable master standards, including as-found/as-left data and uncertainty budget.