YK6 Series Multi-Output Displacement Sensor

Overview

The YK6 Series Multi-Output Displacement Sensor is a precision-engineered linear position transducer designed for demanding industrial environments where reliable, repeatable, and multi-protocol signal transmission is essential. Unlike conventional single-output sensors, the YK6 leverages SmartGas’ proprietary FlexSignal™ architecture to deliver simultaneous analog (e.g., 4–20 mA, 0–10 V) and digital (e.g., RS-485 Modbus RTU, SSI, or CANopen) outputs—preconfigured at the factory to match system integration requirements without field recalibration. Its measurement principle is based on non-contact magnetostrictive or high-resolution potentiometric sensing (model-dependent), ensuring long-term stability, minimal hysteresis, and immunity to mechanical wear across its full stroke range. While commonly deployed in environmental monitoring infrastructure—including gas detection skids, vent stack positioning systems, and actuator feedback loops—the YK6 Series is not itself a gas detector; rather, it serves as a critical motion-sensing component within integrated safety and emissions control systems compliant with IEC 61508 (SIL2-capable architectures) and ISO 13849.

Key Features

• Factory-configured dual-mode output: FlexSignal™ enables concurrent analog and digital signal generation—eliminating external signal conditioning hardware and reducing point-of-installation commissioning time.
• Extended linear range up to 2159 mm (85 inches) in the YK62 variant, engineered for large-scale valve actuation, damper positioning, and stack damper travel monitoring in continuous emission monitoring systems (CEMS).
• Ruggedized aluminum alloy housing with NEMA 4 / IP66-rated sealing—validated for outdoor deployment in high-humidity, dust-laden, and washdown-prone environments typical of wastewater treatment plants, chemical processing facilities, and biogas upgrading stations.
• Industrial-grade thermal performance: operational from −25 °C to +70 °C ambient, with internal temperature compensation maintaining ±0.1 % FS linearity over the full temperature span.
• EMC-compliant design per EN 61326-1 (industrial environment), including surge protection (IEC 61000-4-5 Level 3) and radiated immunity (IEC 61000-4-3, 10 V/m).
• Compact form factor (56 mm × 64 mm × 107 mm) and low mass (170 g) facilitate integration into space-constrained OEM assemblies and retrofit applications without structural reinforcement.

Sample Compatibility & Compliance

The YK6 Series is compatible with standard mounting interfaces (M12 or M18 threaded bodies, configurable flange options) and integrates seamlessly with programmable logic controllers (PLCs), distributed control systems (DCS), and SCADA platforms used in environmental compliance infrastructure. It complies with key regulatory frameworks governing industrial instrumentation: CE marking under the EMC Directive 2014/30/EU and RoHS 2011/65/EU; meets UL 61010-1 requirements for electrical safety in measurement/control equipment; and supports traceable calibration documentation aligned with ISO/IEC 17025 principles when supplied with optional factory calibration certificate. While not intrinsically safe, explosion-proof enclosures (e.g., ATEX Zone 2 or Class I Div 2) can be implemented externally per system-level hazard analysis.

Software & Data Management

No embedded firmware configuration interface is provided—output protocols and scaling parameters are fixed at manufacture to ensure deterministic behavior in safety-critical loops. However, SmartGas supplies a Windows-based configuration utility (YK6 ConfigTool v2.1) for authorized service partners to verify output mapping, perform loop diagnostics, and generate audit-ready calibration reports. All digital communication adheres to open industrial standards: Modbus RTU over RS-485 (addressable, 19.2 kbps), SSI (24-bit resolution, synchronous), or CANopen DS-301 (Node Guarding, Heartbeat). Data integrity is reinforced via CRC-16 error checking, configurable polling intervals, and timestamped status flags (e.g., “sensor fault”, “over-range”, “power brownout”)—enabling seamless ingestion into asset management platforms compliant with ISA-95 and ISO 55000.

Applications

• Position feedback for pneumatic/hydraulic actuators controlling scrubber bypass dampers and flue gas recirculation valves in thermal power plants.
• Linear displacement monitoring of floating covers in anaerobic digesters, supporting methane emission quantification per EPA Method 21 and EU MRV reporting protocols.
• Travel verification in automated gas sampling probe extension mechanisms used in stack CEMS installations (ASTM D6522, EN 15267).
• Calibration reference in dynamic gas flow test benches where piston displacement must correlate precisely with volumetric throughput.
• OEM integration into portable gas detector calibration stations requiring precise, repeatable source positioning for multi-point bump testing.

FAQ

Is the YK6 Series certified for hazardous locations?
No—units are rated for general-purpose industrial use (NEMA 4/IP66). For hazardous area deployment, third-party certified explosion-proof housings or intrinsic safety barriers must be applied at the system level.
Can output types be changed in the field?
No—FlexSignal™ configuration is fixed during manufacturing. Reconfiguration requires return to SmartGas or an authorized service center.
What is the warranty and calibration interval recommendation?
SmartGas provides a 24-month limited warranty; annual functional verification and traceable recalibration are recommended per ISO 9001 Clause 7.1.5 and internal QA procedures.
Does the sensor support HART protocol?
No—HART is not supported. Analog outputs are fixed 4–20 mA or 0–10 V; digital communication uses Modbus RTU, SSI, or CANopen only.
Are custom stroke lengths available beyond 2159 mm?
Yes—custom engineering variants (YK6-Custom) up to 3000 mm stroke are available under NRE agreement, subject to mechanical resonance and temperature gradient validation.