Fixed Gas Detection Products
Trolex TX9042 Controller
Trolex TX9042 Controller
The Trolex TX9042 Controller is a programmable, intrinsically safe sensor controller designed for centralised monitoring and control in harsh and hazardous environments. It accepts a wide range of analogue, digital, and frequency inputs, providing seamless integration with gas, flow, pressure, vibration, temperature, and speed sensors.
Offering up to eight configurable input channels, the TX9042 features direct keypad programming, RS-485 Modbus communication, and built-in data logging for predictive maintenance and system diagnostics. With SIL 1 and SIL 2 compliance and full compatibility with the entire Trolex sensor range, it delivers reliable, flexible, and cost-effective sensor management for mining, tunnelling, and industrial monitoring systems.
- Free technical support included
- Complimentary product training available
- Free on-site or virtual demonstration offered
Technical Details
Specifications
- Input channels: Up to 8 (analogue or digital)
- Input types: 4–20 mA, 0.4–2 V, 0–10 V, PT100 RTD, AC RMS, strain gauge, frequency, on/off switches
- Outputs: 4 programmable relays (0.25 A @ 23 V DC), RS-485 (Modbus)
- Data logging: 26,000 readings per channel (max)
- Display: 4-line LCD screen with bar graph and diagnostic data
- Programming: 4-key menu system (no software required)
- Supply voltage: 12 V DC (+20 % / –2.5 %) @ 125 mA
- Accuracy: ± 0.25 % display, ± 0.5 % setpoint
- Operating temperature: –10 °C to +50 °C
- Enclosure material: ABS (housed in protective metal enclosure for IS use)
- Mounting: DIN rail
- Communications: RS-485 (Modbus network, up to 32 units)
- Certifications: ATEX intrinsically safe for mining; SIL 1 & SIL 2 compliant
Key Features
-
Multi-input versatility: Supports analogue, digital, frequency, and sensor bridge inputs for universal sensor integration
-
Fully programmable: Configure all channels and outputs directly via the built-in keypad — no software required
-
Advanced data logging: Stores 26,000 readings per channel for trend analysis and predictive maintenance
-
Integrated alarms and relays: Four programmable outputs with setpoints, delays, and hysteresis control
-
Real-time display: Continuous signal and status monitoring across all channels on the LCD screen
-
Easy setup: Menu-driven interface with four keys — no PC required
-
Network-ready: RS-485 (Modbus) integration for mine-wide or plant-wide systems
-
Robust design: Built for arduous industrial and underground conditions
-
Compatible system: Works with all Trolex gas and environmental sensors
-
SIL-rated safety: Certified for use in SIL 1 and SIL 2 applications
Industry Applications
The TX9042 Programmable Sensor Controller is trusted in mining, tunnelling, power generation, petrochemical, and industrial automation environments where centralised monitoring and safety control are essential.
Its combination of intrinsic safety, flexible configuration, and powerful communication features makes it ideal for machine condition monitoring, environmental data collection, and integrated alarm systems in hazardous areas.
Trolex TX9042 Controller FAQs
Common questions about the Trolex TX9042 programmable sensor controller, including gas detection monitoring, input channels, MODBUS communications, data logging, hazardous-area applications and system integration.
What is the Trolex TX9042 Controller?
The Trolex TX9042 is a programmable sensor controller designed for centralised monitoring and control in industrial and hazardous environments. It can receive signals from compatible gas detectors and other sensors, process the information and provide outputs for alarms, monitoring and wider control systems.
How many input channels does the TX9042 support?
The TX9042 supports up to eight configurable analogue or digital input channels. This allows multiple compatible detectors and sensors to be connected to a single controller for centralised monitoring.
Can the TX9042 be used with gas detectors?
Yes. The TX9042 can form part of a wider Trolex fixed gas detection system and can accept compatible signals from fixed gas detectors. Its flexible inputs also allow it to monitor other process measurements where required.
What types of sensor input can the TX9042 accept?
Supported input types include 4–20 mA, 0.4–2 V, 0–10 V, PT100 RTD, AC RMS, strain gauge, frequency and on/off switch signals. This makes the controller suitable for monitoring gas, flow, pressure, vibration, temperature and other compatible process sensors.
Does the Trolex TX9042 provide data logging?
Yes. The TX9042 provides built-in data logging with capacity for up to 26,000 readings per channel. Logged information can support system diagnostics, maintenance planning and the investigation of changing sensor conditions.
Does the TX9042 support RS-485 MODBUS?
Yes. The TX9042 supports RS-485 MODBUS communication, allowing compatible controllers and monitoring equipment to be connected as part of a wider industrial monitoring system. A MODBUS network can support up to 32 compatible units.
What outputs are available on the TX9042?
The TX9042 provides four programmable relay outputs alongside RS-485 MODBUS communication. The programmable relays can be configured as part of the system's alarm and control strategy according to the requirements of the installation.
Is the Trolex TX9042 suitable for mining and tunnelling?
The TX9042 is designed for demanding hazardous environments and is particularly relevant to applications such as mining and tunnelling. The correct controller, enclosure, detectors and installation arrangement should always be selected according to the site's hazardous-area and monitoring requirements.
What safety certifications does the TX9042 have?
The TX9042 is designed for intrinsically safe applications and is ATEX certified for mining environments. It is also designed for use within SIL 1 and SIL 2 compliant systems. The complete installation should be assessed against the required safety classification and system design.
Can MTI help specify and support a TX9042 system?
Yes. MTI can assist with controller selection, compatible detectors, system configuration and integration requirements. We also provide ongoing fixed gas detection service and support. For help specifying a TX9042 installation, contact MTI to discuss your application.
