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RKI M2A Detector Head Transmitter
The RKI M2A is a state-of-the-art transmitter that can function as a standalone monitor, stand-alone, or as part of an integrated system.
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RKI M2A Detector Head Transmitter
The RKI M2A is a state-of-the-art transmitter that can function as a standalone monitor, stand-alone, or as part of an integrated system.
The RKI M2A connects analog or digital signals to almost any controller, PLC, or DCS. The setup process is simplified with user-friendly OLED menus and pushes buttons. It uses the magnetic wand technique to perform non-invasive calibration. The RKI instruments M2A offer automatic zero offset correction, making readings more stable and reducing the need for adjustment due to sensor aging.
The RKI M2A enclosure does not need to be opened for zeroing or calibration, so there is no need to reduce the area for routine maintenance. It is designed so that one person can perform a full field calibration. The structure of the sensor is Class I, Div. 1 Group B, C, D for combustibles, CO, H2S, O2, and CO2, and Class I, Div. 2 for all other poisons.
The transmitter provides a 4-20 mA output in addition to the Modbus digital output. It also has two relay alarm levels, plus relay failure alarms. The digital display of gas concentrations, along with alarms and status lights, can be viewed through the front window.
Applications
- Petrochemical plants
- Refineries
- Water & wastewater treatment plants
- Pulp & paper mills
- Manufacturing facilities
- Automotive
- Semiconductor plants
- Chemical plants
RKI M2A Features
- Operates with or without a controller
- Direct digital readout with OLED cold temperature display
- Available gases include
◦ LEL, O2, H2S, CO, CO2, and 100% Vol CH4
◦ Toxic gases include NH3, AsH3, Cl2, ClO2, HCN, & SO2 - Infrared sensor for combustibles and CO2
- 4-20 mA & digital Modbus outputs standard
- 2 fully programmable alarm relays & fail relay
- Non-intrusive calibration via magnetic wand
- Explosion-proof construction
- The patented water-repellent sensor cover
- User-friendly setup, push buttons & OLED menus
- Long-life sensors (2 + years typical)
RKI M2A Specifications
| O2 | H2S | CO | Toxics | CO2 | ||
| Oxygen | Hydrogen Sulfide | Carbon Monoxide | Carbon Dioxide | |||
| Part# | 65-2666RK | 65-2662RK | 65-2663RK | See Chart Below | 65-2661RK-02 | |
| *65-2644RK | 65-2661RK-03 | |||||
| 65-2661RK-05 | ||||||
| 65-2661RK-10 | ||||||
| Sensors | Galvanic cell | Electrochemical | Infrared | |||
| Measuring Ranges | 0-25% Vol. | 0-100 ppm | 0-300 ppm | See Chart Below | -2 | 0 – 5000 ppm |
| -3 | 0 – 5% Vol. | |||||
| -5 | 0 – 50% Vol. | |||||
| -10 | 0 – 100% Vol. | |||||
| Resolution | 0.1% Vol. | 1 ppm | See Chart Below | 20 ppm / 0.01% Vol. / 0.1% Vol. / 1%Vol. | ||
| Lower Detectable Limit (LDL) | 0.1% Vol. | 2% of full scale | ||||
| Response Time (T-90) | 35 Seconds or less | 60 Seconds or less | 30 Seconds or less | |||
| Max Current Draw (24VDC) | 125 mA with alarm 1 and alarm 2 active and all relays energized | 160 mA with alarm 1 and alarm 2 active and all relays energized | ||||
| Life Expectancy | 2 to 3 years with normal service | 5 years plus | ||||
| Accuracy | ± 0.5% Vol. O2 | ± 5% of reading or | ± 5% of reading or | ± 10% of reading or | ± 5% of reading or | |
| (which ever is greater) | ± 2 ppm H2S | ± 5 ppm CO | ± 5% of full scale | ± 2% of full scale | ||
| Physical | ||||||
| Dimensions | Height: 8.5” (215 mm), Width: 5.2” (132 mm), Depth: 4.5” (114 mm) | |||||
| Display | Alphanumeric OLED display. 8 characters per line; 2 lines for gas concentration readout, plus user-friendly calibration and setup | |||||
| Sensor Rating | Non explosion proof construction, designed for Class I, Div. 2, Groups B, C, D (no certification) | |||||
| Housing J-Box | NEMA 4X, explosion proof, watertight, cast aluminum with o-ring seal and epoxy powder coating | |||||
| Controls | Magnet used for calibration functions. Calibrates without opening the housing. Internal push-button controls also available for calibration and setup | |||||
| Sensor | Aluminum / Plastic (non explosion proof) | |||||
| Operating Environment | ||||||
| Operating Temperature | -4°F to 113°F | -40°F to 104°F | 23°F to 104°F | 14°F to 104°F | -40°F to 122°F | |
| -20°C to 45°C | -40°C to 40°C | -5°C to 40°C | -10°C to 40°C | -40°C to 50°C | ||
| Relative Humidity | 5 – 95% RH non-condensing | |||||
| Location | Indoor or outdoor | |||||
| Operating Voltage | 10 VDC – 30 VDC | |||||
To get information about the specifications of this device please download the Datasheet.
Related Products
The RKI M2A is designed to detect and monitor hazardous gases in various industrial and commercial environments, making it a crucial tool for ensuring workplace safety and compliance with regulations.
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Brand
RKI
RKI Instruments
RKI Instruments, Inc. is a well-known brand specializing in the design and manufacture of reliable and advanced gas detection equipment. Founded in 1994 and based in Union City, California, RKI Instruments has established itself as a leader in the gas detection industry, particularly noted for its high-quality portable and fixed systems that detect various hazardous gases.
The brand offers a broad range of gas detection solutions, including single-gas detectors, multi-gas detectors, fixed gas detection systems, and various accessories designed for safety applications in industries such as oil and gas, utilities, emergency services, and environmental monitoring. RKI is known for its commitment to durability, reliability, and accuracy in its products, which are critical in environments where safety is of paramount importance.
RKI Instruments prides itself on its innovative approach to gas detection. The company's products often incorporate advanced technologies such as wireless communication and state-of-the-art sensors that can detect low levels of a wide variety of gases. They also emphasize ease of use and maintenance, ensuring that their devices are both user-friendly and capable of performing in harsh conditions.
Customer service and support are key focuses for RKI, with the company offering extensive training, service, and support to ensure that their products perform optimally and that customers can use them safely and effectively.
Overall, RKI Instruments stands out in the safety and detection industry for its robust product offerings and its dedication to advancing gas detection technology for the protection of lives and property in industrial and hazardous conditions.
Datasheet
Specifications
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