The Multisensor MS4000-S is an online VOC and hydrocarbon gas analyzer that measures volatile organic compounds in gas from 1 to 3000 ppm, with a new reading every 2 seconds. It is used on drains, effluent discharges and sewer systems, on gas streams and gas removal systems, and for fuel leak detection and odour control. Akan Industrial and Automation supplies and commissions the MS4000-S in Türkiye as Multisensor Systems dealer.
How does it work?
The MS4000-S continuously draws air from above the effluent, from inside a drain or from a gas line and passes it across its sensor, which responds to VOCs. The concentration is shown on the touchscreen and sent to a PLC or SCADA system over 4–20 mA. A user-programmable alert threshold switches relays and front-panel indicators, so the analyzer can directly trigger isolation valves, pumps, samplers or audible and visual alarms.
Typical applications
Industrial effluent
Spills can overload on-site treatment and lead to illegal discharges. An MS4000-S at the outlet gives an immediate warning when VOC levels rise, so that action can be taken before the discharge leaves the site.
Sewer systems
Hydrocarbons in sewers endanger maintenance staff and can contaminate sewage sludge, which must then be disposed of as chemical waste instead of being reused. Detecting VOC peaks in the network helps find the source and protect the treatment plant.
Gas streams and leak detection
The analyzer also monitors VOCs in gas removal systems and exhaust gas, detects leaks in natural gas extraction wells and is used for odour control and land remediation.
Key specifications
| Parameter | Value |
|---|---|
| Detection range | 1–3000 ppm total VOCs (default 4–20 mA range 0–3000 ppm) |
| Repeatability | ±5% |
| Accuracy | ±15% (100 ppm toluene standard) |
| Measurement | Continuous, new reading every 2 seconds |
| Ambient temperature | 0–50 °C |
| Sample humidity | Up to 90% RH, non-condensing |
| Outputs | 4–20 mA (isolated), 3 relays: alarm 1, alarm 2, fault (5 A) |
| Communication | Modbus optional; Profibus, HART, Foundation Fieldbus on request |
| Interface and data | Touchscreen; data storage on µSD card / PC (6 months) |
| Enclosure | IP65 powder-coated stainless steel; power supply module IP68 |
| Dimensions and weight | 45 × 28 × 20 cm, 15 kg |
| Power supply | 90–240 V AC 50/60 Hz or 9–36 V DC; max 45 W, typically 20 W |
| Maintenance | Service every 6 months (filters, restrictors) |
To measure VOCs dissolved in water rather than in gas, see the MS1200-S, MS1210-S and MS1220-S. For hazardous-area installations, discuss the location with us before selecting the analyzer.
Why choose Akan for the MS4000-S?
Akan plans the sampling point and sample line, integrates the relays and 4–20 mA signal into your control system and commissions the analyzer on site. Contact us with your application and target compounds.
