Rosemount 708 Wireless Acoustic Transmitter
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.
| Explore this site to learn more about how the Rosemount 708 Wireless Acoustic Transmitter helps significantly reduce process plant energy costs by providing automated and instant visibility to critical steam traps through a non-intrusive, wireless monitoring system. |
| Explore this site to learn more about how the Rosemount 708 Wireless Acoustic Transmitter helps significantly reduce process plant energy costs by providing automated and instant visibility to critical PRV's through a non-intrusive, wireless monitoring system. |
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- 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.
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| Output |
WirelessHART 2.4 GHz DSSS |
| Humidity Limits |
0–100% relative humidity |
| Transmit Rate |
User selectable 1 second to 60 minutes |
| Radio Frequency Power Output from Antenna |
Internal antenna (WP option): Maximum of 10 mW (10 dBM) |
|
| 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 Connections |
Communication Terminals - Clips permanently fixed to power module |
| Materials of Construction |
| Housing |
PBT/PC Engineered Polymer |
| Cover O-ring |
Buna-N |
| Power Module Housing |
PBT/PC Engineered Polymer |
| Wave Guide |
Machined 316L SST |
| Mounting |
Transmitters are directly attached to process piping using two stainless steel mounting bands. |
| Weight |
708 with power module -1.31 lbs. (0.595 kg)
708 without power module - 0.98 lbs. (0.445 kg) |
| Enclosure ratings |
NEMA 4X, and IP65. |
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| Vibration Effect |
Tested 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 |
|
| Acoustic Level |
0-255 counts |
| Temperature |
-40 to 260 °C |
- 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 
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
- 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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