mPower Electronics Inc.

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VOXiWatch II Workover Rig Monitoring System

VOXiWatch II Workover Rig Monitoring System

Continuous gas monitoring system

The VOXiWatch II series continuous gas monitoring system is specifically designed for detection of H2S and LEL (combustibles) around temporary workover rigs. VOXiWatch II uses our MP883 two-channel controller in NEMA 4X enclosure, outfitted with transmitters for 1 or 2 electrochemical H2S sensor(s), or 1 or 2 catalytic bead LEL sensor(s), or one each of H2S and LEL. All cable connections are protected by rugged strain relief in an explosion proof enclosure that includes a convenient mounting bracket. The transmitters are equipped with splash/mud guards and are on 25-ft cables. The 50-ft power cable comes with battery clamps for connection to a user-provided 12-24 VDC battery. The VOXiWatch II enclosure includes horn and strobe assemblies. Also included are Modbus® RTU, common or individual channel relays, and large easy-to-read color display.

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Features
  • Brackets to mount enclosure on solid surface
  • Large graphic color LCD
  • Push-button interface on controller display panel
  • One multi-color LED per channel for power, fault, and alarm
  • Communication: Modbus® RTU
  • Two 3-wire 4-20mA inputs from transmitters
  • Strobe and Horn relays
  • 3 programmable dry contact relays (2 alarms, 1 fault)
  • Up to 10 years of events logged
  • 50-ft power cable and 25-ft cables for transmitters
  • Splash/mud guards for sensor inlets
Certifications
  • MP8xx Rig Systems IECEx Certification
Downloads
Applications
  • Oil & Gas Temporary Worker Rigs
Controller Specifications
Size6 x 6 x 4 in (152 × 152 x 102mm)
Weight5.6 lbs (2.5 kg)
Temperature-4° to 159°F (-20° to 65°C)
Humidity0% to 95% Relative Humidity (non-condensing)
Response time15s t90
EnclosurePolycarbonate NEMA 4X Indoor or Outdoor
Main Power12-24 VDC 
Outputs

• Strobe and Horn
• 2 programmable alarm relays
• 1 programmable fault relay
• Modbus® RTU

ChannelsTwo 4-20 mA channels
Even LogUp to 10 years log of Power on, calibrations, Alarms, Faults, Peaks
Relay Contact Rating
  • 30VDC 5A
  • 120VAC 10A
Power Draw12 Watts maximum power consumption with two transmitters
Display2.4-in Diagonal 240 x 320 Pixels. Background color changes with alarm status: green, yellow, red or blue
MountingFlat Solid Surface
Warranty2 years on controller
Transmitter Specifications
Size8.9 x 5.9 x 4 in (152 × 152 x 102mm)
Weight5.7 lbs (2.5 kg)
Temperature-40° to +131°F (-40° to +55°C)
-40° to +158°F (-40° to +70°C) intermittent
Humidity10% to 95% Relative Humidity (non-condensing)
SensorCatalytic combustion (LEL) and/or electrochemical (EC) H2S sensor modules (SO2 optional)
ConfigurationVia remote infrared programmer
Response time30-120s (t90 varies with sensor type)
SamplingDiffusion
Power<5W, 10-30 VDC supply
Outputs

• 4-20 mA (3 wires)

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
HousingExplosion-proof aluminum alloy
Display4-digit segment LED
Warranty2 years CO & H2S sensors, 1 year on others
Standard & Optional Components
  • VOXiWatch II MP833 controller in an enclosure
  • Horn and amber LED Beacon assemblies
  • Brackets to mount enclosure on solid surface
  • 50-ft power cable with battery clamps for connection to a user-provided 12-24 VDC battery
  • VOXI LEL or H2S MP820/840 transmitters as specified, with splash mud guards and 25-ft cables
  • IR Remote programmer
  • Mounting Parts
  • Quick Start Guide
  • Calibration Certificate
  • Blue, green or red LED Beacon (optional)
  • Armor-clad cable (optional)
  • TMC2X Connector (optional)
Secret Link