Edinburgh Instruments Boxed Gascard NG Series Gas Sensor Module

Overview

The Edinburgh Instruments Boxed Gascard is a compact, OEM-integrated gas sensing module engineered for high-stability, field-deployable infrared (IR) gas detection. Based on non-dispersive infrared (NDIR) absorption spectroscopy, the Boxed Gascard leverages tunable IR source technology and precision optical path design to deliver reliable, interference-resistant measurement of target gases—including CO₂, CH₄, CO, N₂O, and hydrocarbons—across industrial, agricultural, and environmental monitoring applications. Unlike portable standalone detectors, the Boxed Gascard is designed as a core sensor subsystem: it provides calibrated analog voltage output (0–5 V or 4–20 mA, configurable), digital RS232 serial data, and embedded environmental compensation logic—enabling seamless integration into larger control systems, data loggers, or custom-built analyzers. Its architecture adheres to fundamental metrological principles defined in ISO 12039 (for CO₂ analysis) and ASTM D6245 (for indoor air CO₂ monitoring), ensuring traceable performance under variable ambient conditions.

Key Features

• Modern embedded electronics platform featuring a high-speed microcontroller with expanded memory and real-time processing capability for adaptive signal conditioning.
• Wide-input DC power supply compatibility (7–30 V), supporting battery-backed, solar-powered, or industrial 24 V DC systems without external regulation.
• Optional RS232 serial interface enables bidirectional communication: configuration of measurement parameters (e.g., averaging time, alarm thresholds), firmware updates, and raw spectral diagnostics.
• Onboard barometric pressure compensation across 800–1150 mbar—critical for altitude-invariant concentration reporting in uncontrolled environments such as greenhouses, livestock barns, or outdoor perimeter monitoring.
• Integrated wide-range temperature compensation algorithm, active from −10 °C to +50 °C, minimizing thermal drift without requiring external thermostats or calibration offsets.
• Field-replaceable infrared source module—designed for tool-free swap in under 90 seconds—reducing mean time to repair (MTTR) and extending total system service life beyond typical NDIR sensor lifespans.

Sample Compatibility & Compliance

The Boxed Gascard is optimized for continuous, low-maintenance monitoring of gaseous species in ambient air matrices. It supports direct sampling via diffusion or pumped flow (recommended flow rate: 0.1–1 L/min), with inlet compatibility for standard 6 mm OD tubing and optional particulate/condensate filtration. The module complies with electromagnetic compatibility requirements per EN 61326-1 (industrial environment), and its enclosure meets IP20 rating for protected indoor use. While not certified as a safety-rated device per IEC 61508 or ATEX, it is routinely deployed in SIL-2 supporting roles within process safety instrumented systems (SIS) when integrated with certified logic solvers. Data integrity protocols align with GLP-compliant workflows: timestamped output, configurable sample averaging windows (1 s to 60 s), and non-volatile storage of calibration history.

Software & Data Management

Edinburgh Instruments provides the GasCard Configuration Utility—a Windows-based application enabling full parameterization via RS232, including span calibration using certified gas standards, zero-point adjustment, and diagnostic logging (source intensity, detector responsivity, internal temperature/pressure readings). All configuration changes are logged with UTC timestamps and user-defined identifiers. For integration into SCADA or IoT platforms, ASCII-based command-response protocol documentation and Modbus RTU mapping (via optional converter) are supplied. Output data streams support CSV export with metadata headers, facilitating traceability in FDA 21 CFR Part 11–aligned environments when paired with validated third-party data acquisition software.

Applications

• Agricultural process monitoring: Real-time CO₂ enrichment control in glasshouse cultivation; CH₄ flux quantification in manure storage and anaerobic digesters.
• Controlled-environment agriculture (CEA): Integration into vertical farm climate controllers for dynamic ventilation optimization based on plant respiration signatures.
• Industrial hygiene: Personnel exposure assessment in fermentation facilities, composting operations, and biogas upgrading plants.
• Leak detection & verification: Low-concentration hydrocarbon screening in HVAC ductwork, refrigerant handling zones, and pipeline right-of-way surveillance.
• Research-grade environmental monitoring: Long-term deployment in eddy covariance towers and soil gas flux chambers, where stability over diurnal temperature cycles is essential.

FAQ

Is the Boxed Gascard suitable for hazardous area installation?
No—it is rated for general-purpose indoor use (IP20) and lacks explosion-proof certification. For Zone 1/2 deployment, it must be housed in an approved purge cabinet or used remotely with sample draw tubing.
Can the sensor be calibrated in the field without specialized equipment?
Yes—zero calibration can be performed using nitrogen or synthetic air; span calibration requires certified gas standards at known concentration and pressure. Full procedure is documented in the OEM Integration Manual.
What is the expected lifetime of the infrared source?
Under continuous operation at 25 °C ambient, the field-replaceable IR emitter exhibits >24,000 hours MTBF, verified per Telcordia SR-332 reliability prediction methodology.
Does the module support multi-gas detection?
No—the Boxed Gascard is configured at manufacture for a single target gas. Multi-species capability requires parallel modules or higher-tier Edinburgh Instruments GasIQ platforms.
Is firmware upgrade capability available post-deployment?
Yes—RS232-enabled units support over-the-wire firmware updates using the official Edinburgh Instruments utility; version history and release notes are published on the customer portal.