Seacom Process Instruments supplies gas detection, gas measurement and alarm systems for commercial buildings, laboratories, refrigeration plants, industrial processes, biogas facilities and environmental monitoring applications.
The correct instrument depends on the target gas, concentration range, installation location, required alarm response and system interface. A process gas analyser and a personnel-safety gas detector perform different duties and must not be treated as interchangeable.
Gas Detection and Measurement Solutions
Fixed gas detection: Continuous monitoring of combustible, toxic, refrigerant and oxygen-related hazards with local or central alarms.
Carbon dioxide measurement: Room, duct, incubator, process and outdoor CO2 probes and transmitters.
Biogas measurement: In-situ methane, carbon dioxide and humidity measurement for raw biogas and biomethane-upgrading processes.
Refrigerant leak detection: Gas-specific monitoring for refrigeration machinery rooms, cold rooms and HVAC installations.
Air-quality monitoring: Multi-pollutant outdoor stations for gases, particulate matter and environmental parameters.
System integration: Analogue outputs, relays, RS-485 and Modbus options for alarm panels, PLCs, ventilation controls and building-management systems.
Selecting the Right Gas Detection Product
Application
Recommended product
Why it fits
Fixed combustible, toxic or refrigerant gas detection
Configurable station for continuous monitoring of selected gases, particles and environmental conditions.
Information Required for Correct Selection
Target gas: State the exact gas or refrigerant designation; one sensor does not detect every gas.
Measurement purpose: Define whether the instrument is for personnel safety, leak detection, ventilation control, process measurement or environmental monitoring.
Range and units: Confirm the expected normal concentration, alarm levels and required units such as ppm, vol-% or %LEL.
Installation conditions: Provide temperature, humidity, pressure, airflow, washdown exposure and whether the area is hazardous.
Detector placement: Consider possible leak sources, gas density, room geometry, ventilation and occupied areas.
Outputs and integration: Specify relay, 4–20 mA, RS-485, Modbus, PLC or building-management-system requirements.
Maintenance: Plan access for calibration, bump testing, sensor replacement and periodic functional checks.
Typical Applications
Refrigeration and chiller machinery rooms
Laboratories, hospitals and gas-cylinder storage areas
Boiler rooms, parking facilities and industrial process plants
Food, beverage, fermentation and controlled-atmosphere facilities
Greenhouses, incubators and demand-controlled ventilation systems
Biogas production and biomethane-upgrading plants
Outdoor air-quality and environmental research stations
Gas Detection Supplier and Technical Support in Malaysia
Seacom Process Instruments can assist with product selection, measurement-point review, controller sizing, alarm architecture, system integration, installation and maintenance planning. Send us the target gas list, expected concentration, site layout, possible leak sources, operating conditions, alarm actions and required outputs for an application review.
The Vaisala MGP262 continuously measures methane slip and carbon dioxide in offgas from biomethane-upgrading processes. Its in-situ design provides direct, always-on measurement without a separate sampling system.
Optimised for low-level methane measurement in CO2-rich offgas
CH4 measurement range from 0–5 vol-%
CO2 measurement range from 0–100 vol-%
Heated optical measurement for demanding and humid process conditions
Three isolated 4–20 mA outputs and RS-485 Modbus RTU
Ex-certified construction for direct installation in hazardous process areas
The Vaisala Indigo500 Series provides flagship industrial measurement integration: choose Indigo510 for a simplified single-probe system or Indigo520 for full dual-probe capability.
Indigo510: one probe and two isolated analog outputs
Indigo520: two probes, four isolated outputs and two relays
Ethernet web interface and Modbus TCP communication
The Vaisala Indigo200 Series is the standard transmitter platform for one interchangeable Indigo-compatible smart probe, providing local display and practical automation-system connectivity.
Indigo201 with three analog outputs and two relays
Indigo202 with Modbus RTU and two relays
Colour display with numerical and graphical views
IP65 enclosure for industrial measurement applications
The Vaisala GMP251 is an intelligent probe for stable percentage-level carbon-dioxide measurement in incubators, controlled-atmosphere storage and demanding industrial applications.
CO₂ measurement range from 0 to 20% CO₂
Accuracy of ±0.1% CO₂ at 5% CO₂
Compensation for temperature, pressure, humidity and oxygen
Heated sensor head helps prevent condensation
0–20 mA, 4–20 mA, 0–5 V, 0–10 V and RS-485 output options
Standalone Modbus RTU operation or connection to an Indigo transmitter
Compatible with Vaisala Indigo80 and Insight PC software
IP65 probe body with traceable calibration certificate
The Vaisala GMP252 is an intelligent standalone probe for stable ppm-level carbon-dioxide measurement in demanding HVAC, refrigeration, agriculture and industrial applications.
CO₂ measurement range from 0 to 10,000 ppm
Measurement up to 30,000 ppm with reduced accuracy
Accuracy of ±40 ppm from 0 to 3000 ppm
Compensation for temperature, pressure, humidity and oxygen
Heated sensor head helps prevent condensation
0–20 mA, 4–20 mA, 0–5 V, 0–10 V and RS-485 output options
Standalone Modbus RTU operation or connection to an Indigo transmitter
Compatible with Vaisala Indigo80 and Insight PC software
The Vaisala GMW90 Series provides stable wall-mounted carbon-dioxide and temperature measurement, with optional humidity, for demanding HVAC and building-automation applications.
Carbon-dioxide measurement from 0 to 5000 ppm
CO₂ accuracy up to ±(30 ppm + 2% of reading)
Temperature measurement from −5 to +55 °C
Optional HUMICAP® relative-humidity measurement from 0 to 95 %RH
Voltage, current or Modbus RTU output models
Display and CO₂ status-indicator options
Field-exchangeable calibrated measurement modules
Traceable three-point CO₂ calibration certificate included
The Vaisala MGP261 measures methane, carbon dioxide and humidity directly in raw biogas. Its in-situ design avoids a separate sampling system and helps operators monitor gas quality while protecting downstream equipment.
Measures CH4, CO2 and water vapour in one probe
0–100 vol-% measurement range for methane and carbon dioxide
Humidity output as 0–25 vol-% H2O or −10 to +60 °C dew point
Heated optics help prevent condensation in wet biogas
Three isolated 4–20 mA outputs and RS-485 Modbus RTU
Ex-certified construction for direct installation in hazardous process areas
The Vaisala GMP343 is a rugged, high-accuracy carbon-dioxide probe for outdoor monitoring, ecological research, soil respiration, plant-growth chambers and demanding OEM applications.
Selectable CO₂ ranges from 0–1000 ppm to 0–2%
Diffusion-aspirated or flow-through sampling models
Accuracy up to ±(3 ppm + 1% of reading)
Temperature, pressure, humidity and oxygen compensation
RS-232, RS-485, 4–20 mA, 0–2.5 V or 0–5 V outputs
Raw and numerically filtered measurement data
IP67 probe housing with the cable connected
Compatible with MI70 for portable display and logging
The Vaisala RFL100 uses secure, long-range VaiNet wireless technology to monitor temperature, relative humidity and carbon dioxide with the AP10 Access Point and viewLinc Continuous Monitoring System.
At least 50 m typical indoor wireless range
Up to 32 RFL100 data loggers per AP10
30 days of local measurement memory
Approximately 18 months of battery operation for temperature and humidity monitoring
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