MX4 iQuad Portable Multi-Gas Detector

Overview

The MX4 iQuad Portable Multi-Gas Detector is an intrinsically safe, four-channel personal gas monitor engineered for real-time detection and quantification of hazardous atmospheric constituents in industrial, confined-space, and environmental health & safety (EHS) applications. It operates on proven electrochemical and catalytic bead sensor principles—each calibrated and temperature-compensated for high reproducibility across variable field conditions. The instrument simultaneously measures combustible gases (LEL), methane (CH₄), oxygen (O₂), carbon monoxide (CO), hydrogen sulfide (H₂S), nitrogen dioxide (NO₂), and sulfur dioxide (SO₂), delivering trace-level sensitivity with industry-aligned response times (T90 < 30 s for most gases). Designed to meet the operational rigor of first responders, utility technicians, and occupational hygienists, the MX4 iQuad integrates robust mechanical architecture with fail-safe alarm logic compliant with OSHA 1910.120 and NFPA 70E requirements.

Key Features

• Intrinsically safe design certified to UL 913 Class I, Division 1, Groups A–D; ATEX/IECEx Zone 1; and CSA C22.2 No. 152
• Dual-certified IP66/IP67 ingress protection—fully dust-tight and submersible to 1 m for 30 minutes
• Impact-resistant polycarbonate housing with overmolded elastomeric bumper for drop resistance up to 2 m onto concrete
• Triple-stage alarm system: 95 dB audible alert (measured at 30 cm), high-intensity dual-color LED strobe (red/amber), and tactile vibration feedback
• Backlit graphical LCD display with intuitive icon-driven interface supporting English, Spanish, French, and German languages
• Extended runtime: 12 hours continuous operation on rechargeable Li-ion battery (20 °C); 8 hours on AA alkaline cells
• Operating range: –20 °C to +50 °C ambient temperature; 15–95% RH non-condensing
• Dimensions: 103 mm × 68 mm × 30 mm (including battery compartment); weight: 180 g (Li-ion), 193 g (alkaline)

Sample Compatibility & Compliance

The MX4 iQuad supports direct ambient air sampling without external pumps or sample conditioning—ideal for personnel-worn monitoring and spot-check surveys. Sensor cross-sensitivity profiles are characterized per ISO 16000-23 and ASTM D6196, with built-in compensation algorithms minimizing interference from common co-contaminants (e.g., CO₂ on CO sensors, humidity on LEL response). All factory calibrations adhere to ISO 6141 and NIST-traceable standards. Device firmware and calibration records maintain full audit trails aligned with GLP and OSHA recordkeeping mandates. Optional DS2 Instrument Management Unit enables automated bump testing, calibration logging, and fleet-wide configuration control—supporting FDA 21 CFR Part 11-compliant electronic signatures when paired with validated software.

Software & Data Management

Data acquisition and device management are facilitated through the proprietary GasAlertLink™ desktop application (Windows/macOS), which imports time-stamped gas concentration logs, alarm events, battery status, and calibration history via USB or Bluetooth. Export formats include CSV, PDF reports, and XML for integration into enterprise EHS platforms (e.g., Intelex, Sphera). Firmware updates preserve sensor calibration coefficients and user-defined alarm thresholds. The MX•Cal™ docking station provides one-button zero/span calibration with integrated gas delivery verification—eliminating manual regulator handling and reducing calibration drift risk. All data transfers are encrypted using AES-128; local storage retains ≥30 days of minute-interval readings.

Applications

• Confined space entry monitoring per OSHA 1910.146 and ANSI Z117.1
• Utility infrastructure inspection (gas distribution lines, wastewater treatment plants, biogas facilities)
• Hazardous materials (HAZMAT) response and incident scene assessment
• Industrial hygiene surveys for TWA and STEL compliance (per ACGIH TLVs® and OSHA PELs)
• Environmental remediation site characterization and vapor intrusion screening
• University laboratory safety programs and teaching labs requiring multi-gas verification

FAQ

What gases does the MX4 iQuad detect by default?

The standard MX4 iQuad configuration detects LEL (combustibles), O₂, CO, and H₂S. Optional configurations add CH₄, NO₂, and SO₂—each supported by dedicated electrochemical or pellistor-based sensors.
Is the MX4 iQuad suitable for use in explosive atmospheres?

Yes—it carries UL, ATEX, IECEx, and CSA certifications for use in Class I, Division 1 and Zone 1 hazardous locations where flammable vapors, gases, or dusts may be present.
How often must the sensors be calibrated?

Bump testing is recommended before each day’s use; full span calibration is required every 6 months or after exposure to sensor-poisoning compounds (e.g., silicones, lead, sulfur), per manufacturer guidelines and OSHA 1910.120 appendix B.
Can the MX4 iQuad store historical data without a computer?

Yes—the internal memory retains up to 10,000 timestamped data points (including alarms, TWA/STEL calculations, and calibration logs) independent of external connectivity.
Does the device support remote firmware updates?

Firmware updates require local connection via USB or Bluetooth; over-the-air (OTA) updates are not supported to ensure integrity verification and regulatory compliance during critical safety device maintenance.