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RKI Instruments

M2A

Fixed Gas Detection System · Gas Detection

Class-certified type (DNV register) · technical data sheet not yet verified​‍⁠‍‌‌‌⁠​‌⁠‍‍⁠⁠​⁠​⁠​
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Specifications

Technical data.reference — unverified

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Outputs4-20 mA & digital Modbus
Relays2 fully programmable alarm relays & fail relay
ConstructionExplosion proof
Sensor CoverPatented water repellent
User InterfacePush buttons & OLED menus
Sensor Life2 + years typical
Target Gas/Detection RangeCH4 : 0 - 100% LEL, 1% LEL increments
Alarm Settings10 %LEL/50 %LEL
Input Power10 - 30 VDC
Weight4.5 lbs.
Signal Output• 4 to 20 mA with impedance maximums listed below -12 VDC input: 500 ohms impeda
Operating Temperature-40°C to 50°C
Max Distance to Recording Device or Power2,500 ft. w/18 Gauge Wire
Alarm Settings (Alarm 1/Alarm 2)10 ppm/50 ppm
Operating Voltage24.2V
Firmware Version5.0 L
Low power alarm threshold9.5 volts V
RS-485 Modbus Output2-wire RS-485 Modbus RTU
Power Supply10-30 VDC
Max Distance to M2A w/18 Gauge Wire500 ft.
Max Distance to M2A w/16 Gauge Wire1,000 ft.
Max Distance to M2A w/14 Gauge Wire2,000 ft.
Input Signal4 - 20 mA
Manufacturer documentation

Images from manufacturer documentation.

Photos, drawings and page previews from this model’s datasheet or catalog.

Gas detector for methane with explosion-proof housing and various alarm settings.

Applications

  • Gas detection
  • Explosion prevention

Features

  • Explosion-proof
  • Diffusion sampling
  • Push button switches
  • Magnetic switches for calibration
  • Wide operating temperature range
  • 4-20 mA signal output

Options

  • non-intrusive calibration
RKI Instruments M2A – Photo (36e6a2f6dc14_S1-4 S. 1)
Photo · 36e6a2f6dc14_S1-4 · S. 1
RKI Instruments M2A – Photo (36e6a2f6dc14_S1-4 S. 1)
Photo · 36e6a2f6dc14_S1-4 · S. 1
RKI Instruments M2A – Drawing (36e6a2f6dc14_S1-4 S. 1)
Drawing · 36e6a2f6dc14_S1-4 · S. 1
RKI Instruments M2A – Drawing (36e6a2f6dc14_S1-4 S. 2)
Drawing · 36e6a2f6dc14_S1-4 · S. 2
RKI Instruments M2A – Drawing (36e6a2f6dc14_S1-4 S. 4)
Drawing · 36e6a2f6dc14_S1-4 · S. 4
RKI Instruments M2A – Page preview (36e6a2f6dc14_S1-4 S. 3)
Page preview · 36e6a2f6dc14_S1-4 · S. 3
RKI Instruments M2A – Page preview (16cc3b9ea2ee_S7-30 S. 7)
Page preview · 16cc3b9ea2ee_S7-30 · S. 7
RKI Instruments M2A – Page preview (16cc3b9ea2ee_S7-30 S. 8)
Page preview · 16cc3b9ea2ee_S7-30 · S. 8
Source: RKI Instruments M2A datasheet, p. 7
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