RKI Instruments M2A Stand Alone Sensor / Transmitter with J-box, Oxygen (O2) 0-25%, Partial Pressure Sensor - 65-2644RK

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65-2644RK

Brand:

RKI Instruments

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Description

65-2644RK M2A Stand Alone Sensor / Transmitter with J-box, Oxygen (O2) 0-25%, Partial Pressure Sensor by RKI Instruments

The RKI M2A™ is a state-of-the-art transmitter that can operate as an independent, stand-alone monitor or as part of an integrated system. The M2A connects with an analog or digital signal to virtually any controller, PLC, or DCS. Setup procedures are simplified with user friendly push buttons and OLED menus. It utilizes a magnetic wand technique for performing non-intrusive calibration. The M2A provides an automatic zero drift correction feature, which results in more stable readings and reduces the need for adjustments due to sensor aging.

The housing of the M2A does not need to be opened for zeroing or calibration, making it unnecessary to declassify the area for routine maintenance. It is designed so that a complete field calibration can be performed by one person. Sensor construction is rated Class I, Div. 1 Groups B, C, D for flammables, CO, H2S, O2, and CO2, and Class I, Div. 2 for all other toxics.

The transmitter provides a 4-20 mA output in addition to a Modbus digital output. It also has two levels of alarms with relays, plus a fail alarm with relay. A digital display of the gas concentration, as well as alarm and status lights, can be viewed through the front window.

The toxic sensors are electrochemical type plug-in sensors, which provide high specificity, fast response, and long life. The plug-in design allows quick replacement in the field with no tools required. Toxic sensors are designed for use in Class I, Div. 2 hazardous locations. Sensors available for NH3, SO2, PH3, AsH3, and HCN.

The M2A represents the latest leading edge technology in sensor / transmitters today.

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, SO2, HCN, and more
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
Patented water repellent sensor cover
User friendly setup, push buttons & OLED menus
Long-life sensors (2 + years typical)

*Please note we can only ship RKI products to customers within the United States

Specifications

	O2 Oxygen	H2S Hydrogen Sulfide	CO Carbon Monoxide	Toxics Arsine (AsH3) Ammonia (NH3) Phosphine (PH3) Hydrogen Cyanide (HCN) Sulfur Dioxide (SO2)	CO2 Carbon Dioxide
Part#	65-2666RK *65-2644RK	65-2662RK	65-2663RK	65-2648RK-AsH3 65-2648RK-NH3 65-2648RK-PH3 65-2648RK-HCN 65-2648RK-SO2	65-2661RK-02 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	0 - 1.5 ppm 0 - 75.0 ppm 0 - 1.00 ppm 0 - 15.0 ppm 0 - 6.00 ppm	-02	0 - 5000 ppm
					-03 -05	0 - 5% Vol. 0 - 50% Vol.
					-10	0 - 100% Vol.
Resolution	0.1% Vol.	1 ppm		0.01 ppm 0.1 ppm 0.01 ppm 0.1 ppm 0.01 ppm	20 ppm / 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
Life Expectancy	2 to 3 years with normal service
Accuracy (which ever is greater)	± 0.5% Vol. O2	± 5% of reading or ± 2 ppm H2S	± 5% of reading or ± 5 ppm CO	± 10% of reading or ± 5% of full scale	± 5% of reading or ± 2% of full scale
Alarms
Alarm Settings	Two fully programmable alarm set points, increasing / decreasing, latching / self-resetting, on delays, off delays, normally energized or de-energized
Alarm Indication	Visual LEDs. Alarm 1=Amber; Alarm 2=Red; Fail=Red
Relays	5 Amp form 'C' contacts for alarm 1, alarm 2, and fail
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 -20°C to 45°C	-40°F to 104°F -40°C to 40°C	23°F to 104°F -5°C to 40°C	14°F to 104°F -10°C to 40°C	-40°F to 122°F -40°C to 50°C
Relative Humidity	5 - 95% RH non-condensing
Location	Indoor or outdoor
Operating Voltage	10 VDC - 30 VDC
Outputs
Analog	Linear 4-20 mA signal, into 1000 ohms impedance max (24DC), 0 - 500 ohms max (12VDC) corresponding to 0 - full scale
Digital	Modbus RTU output standard, fully configurable, 2-wire RS-485, 1200 to 19.2k baud
Controllers	Compatible with all RKI Beacon controllers, as well as most DCS / PLC systems: Beacon 110, Beacon 200, Beacon 410, Beacon 800
Warranty	One year materials and workmanship

Datasheets & User Manuals

$1,334.00

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RKI Instruments M2A Stand Alone Sensor / Transmitter with J-box, Oxygen (O2) 0-25%, Partial Pressure Sensor - 65-2644RK

Ask an Expert