RKI M2A Detector Head Transmitter
Short Description:
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 | |
| (whichever 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, and 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 (nonexplosion 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.
| Display |
Alphanumeric OLED display. 8 characters per line; 2 lines for gas concentration readout, plus user-friendly calibration and setup |
|---|---|
| Dimensions |
Height: 8.5” (215 mm), Width: 5.2” (132 mm), Depth: 4.5” (114 mm) |
| Operating temperature |
-40°C to 40°C |
| Alarm |
Alarm Indication: Visual LEDs. Alarm 1=Amber; Alarm 2=Red; Fail=Red ,Alarm Settings: Two fully programmable alarm set points, increasing / decreasing, latching / self-resetting, on delays, off delays, normally energized or de-energized, |
| Gas measuring name/range/reso;ution/accurracy |
CO Accuracy: ± 0.5% Vol. O2 ,CO Range: 0-25% Vol. ,CO Resolution: 0.1% Vol. ,CO2 Accuracy: ± 0.5% Vol. O2 ,CO2 Range: 0-25% Vol. ,CO2 Resolution: 0.1% Vol. ,H2S Accuracy: ± 0.5% Vol. O2 ,H2S Range: 0-25% Vol. ,H2S Resolution: 0.1% Vol. ,O2 Accuracy: ± 0.5% Vol. O2 ,O2 Range: 0-25% Vol. ,O2 Resolution: 0.1% Vol. |
| Gas type |
Carbon Dioxide (CO2) ,Carbon monoxide (CO) ,Hydrogen sulfide (H2S) ,Oxygen (O2) |
| Sensor type |
Galvanic cell, Electrochemical, Infrared |
| Outputs |
Analog: Linear 4-20 mA signal, into 1000 ohms impedance max (24DC), 0 – 500 ohms max (12VDC) corresponding to 0 – full scale |
| Controls |
Magnet used for calibration functions. Calibrates without opening the housing. Internal push-button controls also available for calibration and setup |
| Sensor Rating |
Non explosion proof construction, designed for Class I, Div. 2, Groups B, C, D (no certification) |
Datasheet
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