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Daniel 3818 Eight-Path Liquid Ultrasonic Flow Meter  

High accuracy dynamic flow measurement for liquefied natural gas (LNG) 

The Daniel 3818 Liquid Ultrasonic Flow Meter is designed for high accuracy and long-term, reliable performance in LNG applications.  With a completely redundant 4-path, multi-plane configuration that is the equivalent of two 4-path meters in a single body, the Daniel 3818 Ultrasonic Meter utilizes two independent transmitters—one for each set of four chordal paths.  This ensures complete measurement redundancy and the ability to poll each 4-path meter separately. 

Acoustic processing is performed by specialized electronics designed to achieve high sampling rates, provide stable ultrasonic signals and optimal low flow response, delivering accurate, stable and reliable measurement.    

Available in nominal line sizes 8” to 36”, the 3818 offers increased flow capacity, no incremental pressure drop and is designed for the following LNG applications:

  • Custody Transfer
  • Tanker loading and Off-loading
  • Liquefaction Trains
  • Storage Allocation
  • Check Metering
  • Line Balance

Measuring LNG volume dynamically using the Daniel 3818 Ultrasonic Meter delivers higher accuracy than static measurement methods and can result in real savings. The 3818 provides a factory-proven linearity within ±0.15% and a meter factor uncertainty of ±0.027% due to its sophisticated multi-plane British Gas design, fast signal processing, and advanced transducer technology. A typical liquefaction plant moves $4M/hr of LNG during loading and unloading with measurement uncertainty requirements at ±0.5%.  An overall reduction of ±0.20% of measurement uncertainty would equate to a $12,000/hr reduction in financial risk. 

DocumentationFeatures & BenefitsSpecifications
 Magazine Articles
 Dynamic Measurement Solutions in LNG Custody Transfer - LNG World Shipping Magazine
333 KBpdf
 Reducing LNG Measurement Uncertainty - LNG Industry Magazine
2 MBpdf
 News Articles
 Article - ARC View for Emerson's Daniel 3818 LNG Ultrasonic Meter
177 KBpdf
 Product & Service Documentation
 Daniel Ultrasonic Flow Meters - MeterLink Predictive Diagnostics
1 MBpdfSeptember 2015
 Daniel Ultrasonic Meters - 3410/3810 Electronics Flyers
1 MBpdfJuly 2014
 Data Sheets - Bulletins - Catalogs
 Daniel Liquid and Gas Products, Systems and Services Catalog
12 MBpdfApril 2015
 Daniel Ultrasonic Flow Meters - Model 3818 LNG Meter Data Sheet
1 MBpdfOctober 2015
 Manuals & Guides
 Daniel Ultrasonic 3810 Series Electronics Upgrade Kit Instructions
3 MBpdfMarch 2015A
 Daniel Ultrasonic Flow Meter - 3410/3810 Series Local Display Field Install Kit - Quick Install Guide
715 KBpdfSeptember 2014A
 Daniel Ultrasonic Flow Meters - 3818 Liquid Ultrasonic Meter Maintenance and Troubleshooting Manual
2 MBpdfMay 2013A
 Daniel Ultrasonic Flow Meters - 3818 LNG Liquid Ultrasonic Meter Installation Manual
2 MBpdfMay 2013A
 Daniel Ultrasonic Flow Meters - HART Field Device Specification Guide for 3810 Series Liquid Ultrasonic Meters
1 MBpdfSeptember 2013Rev 3
 Daniel Ultrasonic Flow Meters - Pressure Equipment Directive - Installation and Operating Instructions Manual
746 KBpdfMarch 2015E
 Firmware Release Notes Daniel 3810 USM Electronics 12-9-14
259 KBpdf
 Technical White Papers
 Technical Bulletin2 Firmware 3810 Liquid Change History 3-24
265 KBpdfMarch 2015
 Software Downloads
 Device Drivers
 Daniel 3810 Series - DD Files
2 KBhtmlMarch 2012A
 Software Updates
 Daniel Ultrasonic Flow Meters - Model 3810 Modbus Table v1.18 Mar2015
160 KBzipV1.18
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