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Rosemount 708 Wireless Acoustic Transmitter

作者：admin 发布日期：2011-4-21 23:35:57点击：1865

Rosemount 708 Wireless Acoustic Transmitter 

Did you know?

 8,000 - 10,000

 Average # of traps in petrochemical plant

 5 - 10%

Percent of steam traps that fail each year

400

5% of 8,000 traps

$10,424

Annual fuel loss per trap

$4,169,760


Annual fuel loss for 400 traps


The Rosemount 708 Wireless Acoustic Transmitter provides acoustic event detection including leaks in steam traps and pressure relief valves.  The transmitter communicates acoustic level and temperature as well as device and event status via the WirelessHART network for integration into host systems, data historians or energy management software.


 

Features & Benefits

  • Acoustic monitoring of steam traps and pressure relief valves improves energy efficiency and environmental compliance.
  • Simple non-intrusive installation works for any application.
  • IEC 62591 (WirelessHART™)  output with >99% data reliability delivers rich HART data, protected by industry leading security.
  • Use with any existing WirelessHART Gateway and mix with other instruments.
  • Power Module life greater than 10 years for easy maintenance.   

Specifications

Functional Specifications
Output

WirelessHART 2.4 GHz DSSS

Humidity Limits0–100% relative humidity
Transmit RateUser selectable 1 second to 60 minutes
Radio Frequency Power Output from AntennaInternal antenna (WP option): Maximum of 10 mW (10 dBM)
Physical Specifications
Electrical Connections/Power Module
  • Replaceable, non-rechargeable, Intrinsically Safe Lithium-Thionyl Chloride power module pack with PBT/PC enclosure
  • Ten year power module life at reference conditions
Field Communicator ConnectionsCommunication Terminals - Clips permanently fixed to power module
Materials of Construction
HousingPBT/PC Engineered Polymer
Cover O-ringBuna-N
Power Module HousingPBT/PC Engineered Polymer
Wave GuideMachined 316L SST
MountingTransmitters are directly attached to process piping using two stainless steel mounting bands.
Weight708 with power module -1.31 lbs. (0.595 kg)
708 without power module - 0.98 lbs. (0.445 kg)
Enclosure ratingsNEMA 4X, and IP65.
Performance Specifications
Vibration EffectTested per the requirements of IEC60770-1 field or pipeline with high vibration level (10-60 Hz 0.21 mm displacement peak amplitude/60-2000 Hz 3g).
Ambient Temperature Limits-40 °C to 85 °C
Temperature Derating

Process Temperature (°C)

Max Ambient (°C)

 260

 41

 240

 45

 220

 49

 200

 53

 180

 57

 160

 61

 140

 64

 120

 68

 100

 72

 85

 75

ElectroMagnetic Compatibility (EMC)Meets all relevant requirements of EN 61326-2-3:2006
Wireless Output Specifications
Acoustic Level0-255 counts
Temperature-40 to 260 °C

Applications

Monitor Steam Traps
  • Armstrong SteamLogic™ software provides critical, real-time
    information on the condition of your monitored steam trap population
  • Armstrong SteamLogic™ delivers immediate notification of a failed
    steam trap and its location
  • Real-time monitoring provides instantaneous feedback for system
    maintenance and optimization
  • Works on any steam trap installed today

Steam Trap System Architecture

  • SteamLogic Software
    • Shipped with each device
    • Interpret temperature and acoustic data
      • Shows state of steam trap
    • Software is a stand-alone application
      • Does not interface with DCS
      • Talks directly to gateway
      • Supports multiple gateways
  • Mix process monitoring with steam trap monitoring

Pressure Relief Valve

  • Telltale signs
    • Rubber ‘Sock’
  • Reporting
    • Report from the last time there was a ‘sock’ on
    • Pay fine for the entire time even if release was much shorter
  • Wind can also blow sock off
  • Humans are not good at repetitive task

New Way to Monitor Pressure Relief Valves

Wireless Acoustic Transmitter

  • Add acoustic transmitter to your established wireless network
  • Receive alerts when event happens
  • Accurate data to report to regulating agencies
  • Tamperproof Data Records
  • No manual recording
  • 24/7 Monitoring

Monitor Pressure Relief Valves or Pressure Safety Valves

  • Turbulence generated by a leaky valve can be detected using the
    acoustic transmitter
  • Notification when release is occurring and when the release has
    stopped
  • Emerson Smart Wireless network provides time stamped information
    to the host
  • Automated data enables reporting of a tamper-proof data log

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