Pulsar dBMACH3 & dB3 with Double Sun Shields Flow Transducers

Overview

Pulsar’s full range of ultrasonic transducers can be used for flow measurement however, there are two specific designs that have been specially created for flow applications. The dBMACH3 is the first ultrasonic transducer with zero effective blanking distance.

The dBMACH3 and dB3 with double sun shields are specially designed for non-invasive flow measurement. Many flow metering devices require mounting in the bottom of a pipe or channel, which requires a shutdown of the operation for installation to take place. The dBMACH3 and dB3 with double sun shields are the ideal alternative open-channel flow sensors.

The dBMACH3 is the first ultrasonic sensor to achieve a zero-effective blanking distance. The dB3 with double sun shields adds extra solar radiation protection to the sensor to ensure that the internal temperature can be utilized, ensuring flow measurement readings are as accurate and reliable as possible.

dBMACH3 High Accuracy Open Channel Flow Transducer

Featuring unique sun and submergence shields, the dBMACH3 is designed specifically for open channel flow applications. dBMACH3 is the first ultrasonic transducer with zero effective blanking distance beyond the nose cone, allowing it to be sited as little as a few millimeters from the high-flow level. One of the critical factors affecting the ultrasonic accuracy is the measurement distance, so by minimizing the distance, accuracy is maximized.

Operating at 125 kHz frequency the transducer provides high resolution and accuracy. Essential in open channel flow applications. The dBMACH3 can be used with the Ultra 4, 5, and TWIN when in open channel flow mode, or can be paired with the FlowCERT, all of which provide a typical accuracy of +/- 1 mm (0.039in). Resolution +/- 0.5 mm (0.019 in). Range 0 mm to 2.4 m (0 in to 7.9 ft).

dB3 with Double Sun Shields MCERTS Certified

When combined with the Ultra 4 controller, the dB3 with double sun shields has achieved MCERTS Class 1 Certification with 0.136% combined accuracy. This means the pair have been independently tested and performed well under rigorous conditions. Utilities across the globe can now be confident that their flow measurement is of the highest possible accuracy by using MCERTS certified equipment.

Features for the dBMACH3 flow transducer

  • 0 – 2.425m measurement range (0 – 7.95ft)
  • ±1mm accuracy
  • ±0.5 resolution
  • IP68/NEMA 6P
  • ATEX Zones 1 & 2 approval standard. ATEX Zone 0 optional
  • The dB3 with Double Sun Shields adds extra solar radiation protection to the transducer to ensure that the internal temperature compensation can be utilised.

Features for the dB3 with Double Sun Shields flow transducer

  • 0.125 – 3m measurement range (0.41 – 10ft)
  • Accuracy: 0.25% or 6mm whichever is greater
  • Resolution: 0.01% or 2mm whichever is greater
  • IP68/NEMA 6P
  • ATEX Zones 1 & 2 approval standard. ATEX Zone 0 optional

Specifications

Transducer Specific

Model:dBMACH3dB3 with Double Sun Shields
Sensor body dimensions:180D (sunshield) x 205Hmm (7.08 x 8.07in)180D (sunshield) x 115Hmm (7.08 x 4.52in)
Sensor body weight:Nominal 1.1kg (2.4lbs)Nominal 1.1kg (2.4lbs)
Max. & min. temperature (electronics):Standard: -30°C to +90°C (-22°F to +194°F)Standard: -40°C to +90°C (-40°F to +194°F)
ATEX: -30°C to +75°C (-22°F to +167°F)ATEX: -40°C to +75°C (-40°F to +167°F)
Measurement range:0 – 2.425m (0 – 7.95ft)0.125 – 3m (0.41 – 10ft)
Accuracy:±1mm (0.039in)0.25% or 6mm (0.24in) whichever is greater
Resolution:±0.5mm (0.019in)0.01% or 2mm (0.08in) whichever is greater
MCERTS certified:Not applicableClass 1 (0.193%) when used with FlowCERT Lite

Both Transducers

Physical

Sensor body material:Valox 357 U and syntactic foam face
Cable lengths:Standard = 5m, 10m, 20m or 30m (16.4ft, 32.8ft, 65.6ft or 98.4ft). Optional: up to 150m (492ft) maximum (increments of 10m / 32.8ft only)
Maximum separation:500m (1640ft)
Mounting connection:BSP or 1” NPT

Environmental

Enclosure protection:IP68 / NEMA 6P

Approvals

CE approval:2014/30/EU – EMC & 2014/34/EU ATEX Directives. Standards applied: EN 60079-0:2012+A11:2013/ EN 60079-11:2012 / EN 60079-18:2009 / EN 60079-26:2007 / EN 61326-1:2013
ATEX approval:Standard ATEX EEx m II T6 or optional EEx ia IIC T6. FM/FMC approval.

Performance

Frequency:125kHz
Beam Angle:<10°

Download Datasheet: dBMACH3 & dB3 with Double Sun Shields Pulsar Flow Transducers

References : pulsar-pm.com

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