mPower Electronics Inc.

Making Powerful Senses

VOXI EC MP840 Toxic Gas Transmitters

The VOXI EC MP840 is a point-type toxic gas transmitter designed with smart sensor technology and an integral flameproof enclosure for fixed applications. The versatile platform offers over 10 chemical sensor options, auto-zeroing and offline calibration. Three-wire 4-20 mA analog and RS485 digital signal outputs are standard. Various applications include oil & gas, petrochemical, chemical, metallurgical, pharmaceutical, semiconductor, environmental monitoring, and other industry facilities.

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Features
  • Supporting >10 smart modules with sensor identification and manufacturing data
  • Sensor diagnosis, temperature compensation and auto-zeroing
  • LCD with backlight color varying according to alarm status
  • Calibration due date
  • 3 wires for 4-20 mA and RS485 ModBus output
  • Infrared remote programmer for settings, calibrations and adjustments
  • Error codes for easy troubleshooting
  • Recoverable factory settings
  • IP67 rating
  • IECEx certification
Certifications
  • MP840 VOXI EC IECEx Certification
Downloads
Applications
Transmitter Specifications
Size8.9 x 5.9 x 4.9 in (226 × 150 x 125mm)
Weight5.7 lbs (2.6 kg)
Temperature-40° to +158°F (-40° to +70°C)
Humidity10% to 95% Relative Humidity (non-condensing)
SensorElectrochemical sensor modules
ConfigurationVia remote infrared programmer
Response time15s t90
SamplingDiffusion
Power<5W, 10-30 VDC supply
Outputs

Analog: 4-20mA (3 wires)
Digital: RS-485, ModBus
3 relays

IP ratingIP-67
Housing entries4 Conduit entries ¾” NPT
1 Port M28x1 fitting
Safety CertificationsIECEx Ex db IIC T6 Gb (non-Wireless)
            Ex tb IIIC T80°C Db (non-Wireless)
            Ex db ia IIC T6 Gb (Wireless)
            Ex ia tb IIIC T80oC Db (Wireless)
CNEX Ex d IIC T6
EMI/RFICompliant with EMC Directive 2014/30/EU
HousingExplosion-proof aluminum alloy
Pressure86 to 106 kPa (0.85 to 1.05 atm)
AlarmsLCD & LED flashing, external strobe and horn (optional)
Display4-digit segmented LCD
InstallationPipe bolt and wall mount
Warranty2 years CO & H2S sensors, 1 year on others
Standard & Optional Components
  • Gas Transmitter with Sensor installed
  • Rain Shield & Calibration Cap
  • Infrared Remote Programmer
  • Mounting Parts
  • Quick Start Guide
  • Calibration Certificate
  • Strobe and Horn with 3/4″ NPT Fitting (Optional)
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