GASD IS
UL-Certified Intrinsically Safe for Combustible Environments
Elevate Safety Standards with the GASD IS®: Built for Explosive Atmospheres
Product Information
Intrinsically Safe Portable Gas Detection
UL-Certified IIoT-Enabled Portable Gas Detector for Hazardous Locations
This portable gas analyzer is engineered to deliver laboratory-grade toxic gas measurement in environments where ignition risk must be tightly controlled. Designed for use in hazardous (classified) areas and certified intrisically safe by UL, the instrument combines trace-level sensitivity with rugged field readiness – while also functioning as a smart, edge-enabled device within modern IIoT-enabled safety systems.
By bringing intelligence directly to the point of measurement, it enables reliable, always-on monitoring in refineries, chemical plants, confined spaces, and other potentially explosive atmospheres.
An integrated active sampling pump continuously draws air across the sensor for fast response and stable readings, while Duracell Procell batteries support a full shift of continuous operation. As an edge device, the analyzer processes and visualizes data locally through a clear digital display with live trend graphics, while onboard memory captures exposure history for documentation and compliance tracking.
Configurable visual and audible alarms provide immediate warning when gas concentrations approach or exceed defined thresholds—supporting faster, more informed decision-making in dynamic environments.
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UL-Certified Intrinsic Safety for Hazardous Locations: GASD IS is UL Certified as intrinsically safe for Class I, Division 1, Groups A, B, C and D and Class I, Zone 0, AEx ia IIC T4 Ga (USA) / Ex ia IIC T4 Ga (Canada). This certification enables operation directly in classified areas where flammable gases or vapors may be present, allowing monitoring closer to the point of risk, reducing reliance on long remote-sampling lines and providing faster, more representative measurements at the source.
- Field-Ready Portability: A compact, impact-resistant enclosure and balanced handheld form factor support extended use in demanding environments. As a rugged edge node, the device delivers real-time insights at the source, while long-duration battery operation ensures continuous, always-on monitoring throughout the workday.
- System Connectivity and Integration: Standard analog and digital outputs allow the analyzer to integrate seamlessly into plant safety systems, data loggers, and broader IIoT ecosystems. This enables centralized visibility, historical data analysis, and coordination across a distributed device fleet.
- Rugged Industrial Construction: Engineered for durability in harsh industrial conditions, the enclosure resists vibration, dust, and temperature variation. The design ensures reliable performance as part of both standalone deployments and larger connected safety networks.
- Clear Data and Simple Operation: A high-contrast display with live graphical feedback makes concentration trends easy to interpret in real time. Built-in data logging and onboard processing simplify recordkeeping, exposure verification, and reporting—reducing administrative burden while supporting compliance and operational efficiency.
- Class I, Division 1 Groups A, B, C, and D hazardous locations
- Class I, Zone 0 AEx ia IIC T4 Ga (USA) protection level
- Ex ia IIC T4 Ga (Canada) protection level
- Capability to detect 21 gases
- Portable
- Extremely low level sensitivity (gas dependent)
- Active and continuous sampling with an integral sample pump, powered by rechargeable Lithium-Ion batteries
- Digital readout of concentration, along with real time graphics display
- Data logging
- Audible and visual alarm
- Analog output (4-20 mA and 0-2.5 V)
- 8 hours of continuous service
| UL-Certified Intrinsically Safe | Class I, Division 1 Groups A, B, C and D, Intrinsically Safe |
| Class I, Zone 0 AEx ia IIC T4 Ga (USA) | |
| Ex ia IIC T4 Ga (Canada) | |
| Ambient Temperature Range: 32°F – 113°F (0°C – 45°C) | |
| T4 Temperature Classification is assumed at this time | |
| Accuracy | 5% |
| Display | Sunlight visible transflective LCD |
| Battery | Replaceable Duracell Pro Cell Batteries |
| Data Logging | Via integral SD card (32 GB) |
| Dimensions | 5½ in H x 8¼ in W x 10 in D (140 x 210 x 254 mm) Includes body and legs |
| Weight | 6.5 lb (2.95 kg) |
| Enclosure | Anodized aluminum |
| Power (when plugged in) | Universal AC outlet adapter. Rated voltage 100-240V, 50/60hz, USB A. Total output: 5V, 2400 mA or higher. |
| Calibration | Against standard gas mixture, or via Interscan’s SENSOR EXPRESS® |
GASES WE DETECT
Why Interscan Detectors
0-Downtime Sensor Replacement
Replacement Sensors On-Demand, Right When You Need Them
Extremely Low-Level Gas Sensitivity
Real Time Data Logging
INDUSTRIES WE SERVE
COMMON QUESTIONS
For accurate readings, the pump must be on while measuring. When you enter Measure-mode, the default is “Mode: Off “ (this means the pump is off) With measure mode “off”, it may appear like the instrument is measuring, but it is not measuring actually. (If the pump is off the display will read Mode: Off as shown below)
To turn the pump on, from main menu with MEASURE highlighted, press the Right Arrow and press Enter The display should read “Mode:On” and now your device is actively measuring. This is process should be used each time a measurement is taken. If pump was previously “off”, then once the pump is turned-on, the user can confirm that the instrument is measuring gas.
If the pump was turned on and the sampling mode is set to “CON” (See FAQs), but measurements are still reading Zero, it may be necessary to reset the zero on the device to restore measurement accuracy. (is possible that the zero was inadvertently reset while the instrument was stabilizing and thus measurement below that “new zero” will always read zero)
To reset zero : The instrument should be in an environment without any analytes, then power the instrument. Measure will be highlighted. Press the right-arrow and then press Enter. The instrument display should say “Mode:On”.
Let the instrument stabilize for 30 minutes.
After 30 minutes , press the up-arrow button to Highlight Zero and press Enter. This will establish a new zero for the instrument sensor.
Press the Stop button.
Expose instrument to the target gas to confirm the new zero is established and non-zero readings are present. (If your instrument is still reading zero, then please contact our technical support department)
If the sampling mode is not set to “CON”, press the down-arrow to highlight Sampling Mode, then press the right-arrow. Then use the up and down arrow to scroll to highlight CON
Power off the instrument.
Power the instrument back on. Measure will be highlighted. Press the right-arrow and then press Enter The device should be begin measurement
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