Overview
Consilium Salwico ST400 H2S Gas Detector Art.No.4462 for Marine Gas Detection Systems
The Consilium Salwico ST400 H2S Gas Detector is a fixed electrochemical gas detector designed to continuously monitor Hydrogen Sulphide (H₂S) concentrations in marine and offshore environments. It provides early detection of toxic H₂S gas to help protect personnel, machinery spaces, cargo areas, and enclosed compartments from hazardous gas exposure. The detector delivers a 4–20 mA two-wire output, features a robust marine-grade housing, and is compatible with Salwico GS3000, GS4, and SW2020 gas detection systems. Its "one-man calibration" design simplifies maintenance while ensuring reliable long-term performance.
At Ship Care Service, we supply genuine Consilium Salwico ST400 H2S Gas Detectors, replacement sensors, spare parts, calibration accessories, and technical support for commercial vessels, offshore platforms, FPSOs, and marine operators worldwide.
What is the Consilium Salwico ST400 H2S Gas Detector?
The Salwico ST400 H2S is a fixed toxic gas detector that continuously measures Hydrogen Sulphide (H₂S) concentration using an electrochemical sensing element.
The detector continuously samples the surrounding atmosphere and converts the detected H₂S concentration into a 4–20 mA output signal, which is transmitted to the connected gas detection control panel. When H₂S levels exceed configured alarm thresholds, the gas detection system activates audible and visual alarms to warn personnel of dangerous conditions. The detector is commonly available with an H₂S measuring range of 0–25 ppm, while some system configurations use 0–30 ppm calibration ranges.
Why is an H₂S Gas Detector Important?
Hydrogen Sulphide is a highly toxic and potentially fatal gas that may be present during cargo handling, tank operations, drilling activities, sewage treatment, ballast systems, and confined space entry.
The Salwico ST400 H₂S detector helps operators:
- Detect toxic H₂S gas at an early stage
- Protect crew working in hazardous areas
- Monitor enclosed spaces continuously
- Reduce health and safety risks
- Support safe confined space entry
- Improve emergency response
- Enhance onboard safety management
How the Consilium Salwico ST400 H₂S Gas Detector Works
The ST400 continuously monitors ambient air for Hydrogen Sulphide gas.
Step 1 – Gas Exposure: Ambient air enters the detector through the sensor opening.
Step 2 – Electrochemical Detection: The electrochemical sensor reacts with Hydrogen Sulphide molecules and generates an electrical signal proportional to the gas concentration.
Step 3 – Signal Processing: The transmitter electronics convert the sensor signal into a standard 4–20 mA analogue output, allowing continuous communication with the gas detection control system.
Step 4 – Alarm Activation: When H₂S concentration exceeds preset alarm levels, the connected gas detection controller activates:
- Audible alarms
- Visual alarms
- Remote alarm systems
- Safety shutdown functions (where configured)
Key Features
Continuous Hydrogen Sulphide Monitoring: Provides continuous monitoring of toxic H₂S gas in marine and offshore environments.
Electrochemical Sensor Technology: Uses a high-accuracy electrochemical sensing cell for reliable Hydrogen Sulphide measurement.
4–20 mA Output Signal: Standard two-wire 4–20 mA analogue output allows easy integration with marine gas detection systems.
One-Man Calibration: The ST400 incorporates one-man calibration technology, allowing a single technician to perform calibration directly at the detector without requiring adjustments at the controller, reducing maintenance time.
Marine-Grade Construction: Designed with a chrome-plated ABS enclosure and stainless-steel sensor housing for dependable performance in harsh marine environments.
Compatible with Salwico Systems: The detector is designed for use with Salwico GS3000, Salwico GS4, and Salwico SW2020 Gas Detection Systems.
Typical Applications & Industries We Serve
The Consilium Salwico ST400 H₂S Gas Detector is commonly installed on:
✓ Oil Tankers
✓ Chemical Tankers
✓ LNG Carriers
✓ LPG Carriers
✓ Offshore Platforms
✓ FPSOs
✓ Drill Ships
✓ Offshore Support Vessels
✓ Engine Rooms
✓ Pump Rooms
✓ Cargo Pump Areas
✓ Confined Spaces
Industries We Serve: Marine Shipping, Offshore Oil & Gas, Shipbuilding, Offshore Energy, Chemical Transportation, Marine Safety, Port Operations, Industrial Gas Detection.
Who Uses the Consilium Salwico ST400 H₂S Gas Detector: Chief Engineers, Electrical Technical Officers (ETO), Marine Engineers, Safety Officers, Cargo Officers, Technical Superintendents, Shipowners, Ship Management Companies, Offshore Maintenance Engineers.
Why Choose the Consilium Salwico ST400 H₂S Gas Detector: Marine operators choose the ST400 because it provides continuous H₂S monitoring, reliable electrochemical sensing, accurate toxic gas detection, simple one-man calibration, standard 4–20 mA communication, marine-grade durability, easy Salwico integration, and proven offshore reliability.
Technical Overview & Specifications
The Consilium Salwico ST400 H2S Gas Detector is a fixed electrochemical toxic gas detector developed for continuous Hydrogen Sulphide (H₂S) monitoring in marine and offshore environments. It is designed to provide reliable gas detection in areas where H₂S may be generated during cargo handling, ballast operations, drilling activities, sewage systems, fuel processing, confined space operations, and machinery spaces.
The detector utilizes an advanced electrochemical sensing element that continuously measures H₂S concentration and converts the measured value into a standard 4–20 mA analogue output for transmission to the connected gas detection control panel. The ST400 is compatible with Consilium Salwico GS3000, GS4, and SW2020 gas detection systems, providing dependable toxic gas monitoring while supporting onboard personnel safety.
Its rugged marine construction, simple calibration procedure, and long sensor life make the ST400 suitable for demanding commercial shipping and offshore applications.
Note: Sensor measuring range, alarm settings, cable configuration, and installation arrangement may vary depending on vessel design and gas detection system configuration. Always verify equipment specifications using the detector nameplate and official Consilium documentation.
| Specification | Details |
|---|
| Product Name | Consilium Salwico ST400 H2S Gas Detector |
| Manufacturer | Consilium Safety Group |
| Art. No. | 4462 |
| Equipment Type | Fixed Toxic Gas Detector |
| Gas Detected | Hydrogen Sulphide (H₂S) |
| Detection Principle | Electrochemical Sensor Cell |
| Measuring Range | 0–25 ppm H₂S (standard) / 0–30 ppm optional |
| Output Signal | 4–20 mA Analogue (2-Wire Current Loop) |
| Power Supply | 12–30 VDC (24 V DC Typical Marine Installation) |
| Housing Material | Chrome-plated ABS Enclosure & Stainless Steel (SS316) Sensor Housing |
| Ingress Protection | IP65 (excluding sensor element) |
| Operating Temperature | –40°C to +55°C |
| Weight | Approx. 470 g |
| Installation | Indoor & Outdoor Marine Wall-Mount Applications |
| Compatible Systems | Salwico GS3000, Salwico GS4, Salwico SW2020 Gas Detection Systems |
Main Components & Working Principle
The Consilium Salwico ST400 consists of several integrated components:
- Electrochemical Sensor: The primary gas detection cell providing continuous H₂S detection, accurate measurement, stable long-term performance, and fast response.
- Sensor Housing: Protects the electrochemical element from harsh marine conditions (SS316 stainless steel) while allowing ambient gas to reach sensing surface.
- Transmitter Electronics: Converts sensor signal into standard 4–20 mA output for communication with the control panel.
- Calibration Interface: Allows technicians to perform routine one-man calibration and functional testing directly at the detector head without removing from service.
- Mounting Assembly: Secure wall bracket allowing hazardous area installation and easy maintenance access.
- Electrical Terminal Block: Provides robust connections for Power Supply, 4–20 mA Output, Signal Wiring, and System Ground.
Working Principle:
Step 1 – Gas Entry: Ambient air naturally enters the detector through the sensor inlet.
Step 2 – Electrochemical Reaction: When Hydrogen Sulphide reaches the electrochemical sensor, a chemical reaction produces an electrical signal proportional to the gas concentration.
Step 3 – Signal Processing: Transmitter electronics convert sensor output into a 4–20 mA analogue signal continuously transmitted to the connected control panel.
Step 4 – Alarm Processing: Gas detection controller compares signal against programmed alarm limits and activates audible/visual alarms, remote indicators, ventilation, and emergency shutdown systems.
Advantages of Consilium Salwico ST400 H₂S Detector
Continuous Toxic Gas Monitoring: Provides uninterrupted Hydrogen Sulphide detection for improved crew safety.
Accurate Electrochemical Measurement: High-precision sensing delivers stable, reliable H₂S readings.
Simple One-Man Calibration: Allows calibration by a single technician without adjusting the controller, minimizing downtime.
Standard 4–20 mA Communication: Seamless integration across existing marine automation and Salwico panels.
Marine-Grade Construction: Built for high humidity, salt-laden atmosphere, cargo pump rooms, and offshore environments.
Reliable Long-Term Performance: Low maintenance overhead when serviced according to PMS guidelines.
Routine Maintenance & Troubleshooting
Routine Maintenance Schedule:
- Before Operation: Inspect detector status, housing condition, power supply, wiring connections, and verify alarm status before entering hazardous areas.
- Weekly Inspection: Check cleanliness, mechanical condition, indicator status, and wiring integrity. Remove dust or contamination.
- Monthly Inspection: Inspect sensor condition, electrical terminals, mounting hardware, cable glands, power supply, and signal output. Perform functional testing.
- Annual Maintenance: Calibration verification, bump testing, sensor performance testing, complete functional testing, and sensor replacement (if required). Record in vessel PMS.
Common Operational Problems & Solutions:
- Problem: Sensor Fault (Ageing, contamination, moisture, end of life) → Solution: Inspect sensor and replace if required.
- Problem: No Output Signal (Power supply failure, wiring damage, electronic fault, loose terminals) → Solution: Verify power supply, inspect wiring, test transmitter electronics.
- Problem: False Gas Alarm (Contamination, calibration drift, interfering gases, moisture) → Solution: Inspect, clean, and recalibrate detector; replace sensor if necessary.
- Problem: Communication Failure (Cable damage, loose wiring, controller fault) → Solution: Verify wiring continuity and test controller communication.
- Problem: Calibration Failure (Expired calibration gas, sensor ageing, incorrect procedure) → Solution: Use certified calibration gas (20 ppm H₂S in air), repeat calibration, replace sensor if needed.
Calibration Recommendations: Calibration is recommended every 6–12 months, after sensor replacement, following prolonged exposure to high gas concentrations, after major maintenance, or during annual safety inspections.
Genuine Spare Parts & Buying Guide
Ship Care Service supplies genuine replacement parts for the Consilium Salwico ST400 H₂S Gas Detector, including:
- Electrochemical H₂S Sensors
- Detector Transmitters & Electronics Modules
- Sensor Housings (Stainless Steel SS316)
- Calibration Adapters & Genuine Calibration Accessories
- Dust Filters & Splash Covers
- Cable Glands & Mounting Brackets
- Terminal Blocks & Wiring Accessories
- Detector Protective Covers
Buying Guide:
1. Verify System Compatibility: Confirm compatibility with installed Salwico control systems (GS3000 / GS4 / SW2020).
2. Confirm Equipment Identification: Provide model number, serial number, equipment nameplate photo, vessel name, and existing part number.
3. Choose Genuine Consilium Components: Ensures accurate H₂S detection, reliable alarm performance, long sensor life, and compliance with marine safety standards.
4. Work with an Experienced Marine Supplier: Partner with Ship Care Service for technical assistance, worldwide marine dispatch, and genuine certified components.
Frequently Asked Questions (FAQ)
1. What is the Consilium Salwico ST400 H2S Gas Detector?
The Consilium Salwico ST400 H2S Gas Detector is a fixed electrochemical gas detector designed to continuously monitor Hydrogen Sulphide (H₂S) gas concentrations onboard ships and offshore installations. It provides early warning of toxic gas leaks and communicates with marine gas detection control systems.
2. What gas does the ST400 detect?
The ST400 is specifically designed to detect Hydrogen Sulphide (H₂S), a highly toxic and hazardous gas commonly encountered during cargo handling, tank cleaning, drilling operations, sewage systems, and confined space entry.
3. How does the ST400 H₂S Gas Detector work?
The detector uses an electrochemical sensor that reacts with Hydrogen Sulphide gas. The resulting electrical signal is converted into a 4–20 mA analogue output, which is transmitted to the connected gas detection controller for continuous monitoring and alarm activation.
4. Where is the ST400 commonly installed?
Typical installation locations include Cargo Pump Rooms, Engine Rooms, Pump Stations, Ballast Areas, Fuel Treatment Rooms, Confined Spaces, Offshore Production Areas, FPSOs, Chemical Tankers, and Oil Tankers.
5. Which gas detection systems are compatible with the ST400?
The detector is commonly used with Consilium Salwico GS3000, Consilium Salwico GS4, and Consilium Salwico SW2020 Gas Detection Systems. Compatibility should always be confirmed before installation.
6. Why is Hydrogen Sulphide monitoring important onboard ships?
Hydrogen Sulphide is extremely toxic even at low concentrations. Continuous monitoring helps protect crew members, prevent toxic gas exposure, improve emergency response, enhance onboard safety, support safe confined space entry, and reduce operational risks.
7. Does the ST400 require calibration?
Yes. Routine calibration is essential to maintain measurement accuracy. Calibration intervals should follow the manufacturer's recommendations and the vessel's Planned Maintenance System (PMS).
8. What is bump testing?
A bump test exposes the detector to a known concentration of calibration gas to verify that the sensor and alarm system respond correctly. It confirms proper detector operation without performing a full calibration.
9. What are the most common operational problems?
Common issues include sensor ageing, calibration drift, sensor contamination, wiring faults, power supply failure, signal communication problems, moisture ingress, and end of sensor life. Routine maintenance minimizes these problems.
10. How often should the sensor be replaced?
Sensor lifespan depends on operating conditions, exposure to gas, environmental factors, and maintenance practices. Replacement should follow Consilium recommendations or whenever the sensor fails calibration or functional testing.
11. What spare parts are commonly available?
Common spare parts include Electrochemical H₂S Sensors, Detector Electronics, Calibration Adapters, Sensor Housings, Dust Filters, Cable Glands, Terminal Blocks, Mounting Brackets, Detector Covers, and Wiring Accessories.
12. Can the ST400 be installed outdoors?
Yes. The ST400 is designed with a rugged marine-grade enclosure suitable for indoor and outdoor marine environments when installed according to the manufacturer's instructions.
13. Why should genuine Consilium spare parts be used?
Genuine parts help ensure accurate gas detection, reliable alarm performance, long sensor life, full compatibility, safe system operation, and compliance with marine safety standards.
14. How can I identify the correct replacement detector?
Provide model number, serial number, equipment nameplate photo/details, vessel name, and existing part number (if available) to ensure the correct replacement detector or spare part is supplied.
15. Who typically uses the Consilium Salwico ST400?
Chief Engineers, Electrical Technical Officers (ETO), Marine Engineers, Safety Officers, Cargo Officers, Technical Superintendents, Shipowners, Ship Management Companies, and Offshore Maintenance Engineers.
Why Buy from Ship Care Service?
At Ship Care Service, we supply genuine Consilium Salwico ST400 H2S Gas Detectors, replacement electrochemical sensors, spare parts, calibration accessories, and technical support for commercial vessels, offshore platforms, FPSOs, and marine industries worldwide.
Our Supply Includes:
✓ Genuine Consilium Salwico ST400 Detectors
✓ Electrochemical H₂S Sensors
✓ Detector Transmitters & Electronics
✓ Calibration Kits & Adapters
✓ Dust Filters & Cable Glands
✓ Mounting Hardware & Brackets
✓ 100% Genuine Spare Parts
✓ Marine Technical Assistance
✓ Worldwide Rapid Shipping
✓ Fast 2–4h Quotation Response
