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RKI Instruments M2A Fixed Gas Sensor/Transmitter with OLED, 4-20 mA and Modbus Outputs
- Regular price
- $969.00
- Sale price
- $969.00
- Regular price
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Product Description P/N: M2A
Description
RKI Instruments M2A is a fixed-mount gas sensor/transmitter designed for continuous gas monitoring with a direct OLED concentration readout. The M2A provides standard 4–20 mA analog and RS-485 Modbus outputs for connection to gas monitoring controllers, PLCs, DCS equipment, or standalone alarm devices.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | RKI Instruments |
| Category | Gas Detection |
| Part Number | M2A |
| Subcategory | Fixed Gas Sensor/Transmitters |
| Product Type | Fixed-mount continuous gas detector/transmitter |
| Display | Alphanumeric OLED, 8 characters per line |
| Analog Output | Linear 4–20 mA |
| Digital Output | Modbus RTU, 2-wire RS-485 |
| Modbus Baud Rate | 1200 to 19.2k baud |
| Alarm Relays | 2 programmable alarm relays plus 1 fail relay |
| Relay Contacts | 5 A Form C contacts |
| Operating Voltage | 10–30 VDC |
| Calibration | Non-intrusive magnetic-wand calibration |
| Controls | Magnetic calibration control and internal push buttons |
| Sensor Technology | Infrared available for combustible gases and CO2; additional sensor types available by gas configuration |
| Relative Humidity | 5–95% RH, non-condensing |
| Enclosure Rating | NEMA 4X, watertight cast aluminum with O-ring seal and epoxy powder coating |
| Dimensions | 8.5 × 5.2 × 4.5 in (215 × 132 × 114 mm) |
| Weight | 4.5 lb |
Information About M2A
The M2A is a fixed gas detector head from RKI Instruments designed for standalone operation or integration into centralized gas detection systems. Its explosion-proof, NEMA 4X cast-aluminum enclosure supports installation in demanding indoor and outdoor monitoring environments. The transmitter interfaces with RKI Beacon controllers as well as compatible PLC and DCS systems through standard analog or digital communication. Non-intrusive magnetic-wand calibration, internal push-button controls, programmable alarm relays, and an OLED menu system provide local configuration and maintenance capability.
Key Features:
- OLED Display: Provides a direct digital readout of measured gas concentration and access to calibration and setup menus.
- Dual Communication Outputs: Supplies a linear 4–20 mA analog signal and configurable RS-485 Modbus RTU output as standard.
- Programmable Alarm Relays: Includes two configurable gas alarm relays plus a dedicated fail relay for external signaling and control.
- Flexible System Integration: Operates independently or interfaces with compatible gas controllers, PLCs, and DCS equipment.
- Non-Intrusive Calibration: Supports calibration through the enclosure window using a magnetic wand without opening the housing.
- Infrared Detection Support: M2A configurations are available with infrared sensing technology for combustible gases and CO2.
- Long-Life Sensor Design: Sensors are specified for a typical service life of two years or longer.
- Rugged Enclosure: NEMA 4X cast-aluminum construction provides watertight protection for fixed industrial installations.
The M2A delivers the reliability and precision required for continuous fixed gas detection and integration with industrial monitoring and alarm systems.
Description
RKI Instruments M2A is a fixed-mount gas sensor/transmitter designed for continuous gas monitoring with a direct OLED concentration readout. The M2A provides standard 4–20 mA analog and RS-485 Modbus outputs for connection to gas monitoring controllers, PLCs, DCS equipment, or standalone alarm devices.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | RKI Instruments |
| Category | Gas Detection |
| Part Number | M2A |
| Subcategory | Fixed Gas Sensor/Transmitters |
| Product Type | Fixed-mount continuous gas detector/transmitter |
| Display | Alphanumeric OLED, 8 characters per line |
| Analog Output | Linear 4–20 mA |
| Digital Output | Modbus RTU, 2-wire RS-485 |
| Modbus Baud Rate | 1200 to 19.2k baud |
| Alarm Relays | 2 programmable alarm relays plus 1 fail relay |
| Relay Contacts | 5 A Form C contacts |
| Operating Voltage | 10–30 VDC |
| Calibration | Non-intrusive magnetic-wand calibration |
| Controls | Magnetic calibration control and internal push buttons |
| Sensor Technology | Infrared available for combustible gases and CO2; additional sensor types available by gas configuration |
| Relative Humidity | 5–95% RH, non-condensing |
| Enclosure Rating | NEMA 4X, watertight cast aluminum with O-ring seal and epoxy powder coating |
| Dimensions | 8.5 × 5.2 × 4.5 in (215 × 132 × 114 mm) |
| Weight | 4.5 lb |
Information About M2A
The M2A is a fixed gas detector head from RKI Instruments designed for standalone operation or integration into centralized gas detection systems. Its explosion-proof, NEMA 4X cast-aluminum enclosure supports installation in demanding indoor and outdoor monitoring environments. The transmitter interfaces with RKI Beacon controllers as well as compatible PLC and DCS systems through standard analog or digital communication. Non-intrusive magnetic-wand calibration, internal push-button controls, programmable alarm relays, and an OLED menu system provide local configuration and maintenance capability.
Key Features:
- OLED Display: Provides a direct digital readout of measured gas concentration and access to calibration and setup menus.
- Dual Communication Outputs: Supplies a linear 4–20 mA analog signal and configurable RS-485 Modbus RTU output as standard.
- Programmable Alarm Relays: Includes two configurable gas alarm relays plus a dedicated fail relay for external signaling and control.
- Flexible System Integration: Operates independently or interfaces with compatible gas controllers, PLCs, and DCS equipment.
- Non-Intrusive Calibration: Supports calibration through the enclosure window using a magnetic wand without opening the housing.
- Infrared Detection Support: M2A configurations are available with infrared sensing technology for combustible gases and CO2.
- Long-Life Sensor Design: Sensors are specified for a typical service life of two years or longer.
- Rugged Enclosure: NEMA 4X cast-aluminum construction provides watertight protection for fixed industrial installations.
The M2A delivers the reliability and precision required for continuous fixed gas detection and integration with industrial monitoring and alarm systems.