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Daniel 3804 Electronics – Ultrasonic Flow Meter Transmitter
This innovative electronics platform improves the speed and simplicity of managing ultrasonic measurement information, saving time and assuring measurement integrity.
All transducers are sampled 32 times per second and measurement is updated every quarter of a second. Mark III Electronics firmware utilizes Linux operating system, enabling fast and easy access to data including alarms, configuration changes and flow dynamics in seconds. In addition, this scalable platform improves low-flow performance and the ability to detect and process ultrasonic signals in the presence of high-frequency valve noise.
Daniel 3804 Electronics – Ultrasonic Flow Meter Transmitter


  • 10.4 VDC – 36 VDC
  • 8 watts typical
  • 15 watts maximum
Operating Temperature Range
–40°C to +65°C (–40°F to +149°F)
Operating Relative Humidity
Up to 95% non-condensing
Storage Temperature
-40°C to +85°C (-40°F to +185°F)
Mount Options
  • Integral mount (standard)
  • Remote mount (optional) – Required when process conditions exceed +65.5°C (+150°F)


    • Ease-of-Use
    Enhanced best-in-class Windows-based Daniel MeterLink software
    Better audit logging with information now date-range accessible
    Quick and easy identification of problems
    Simple data access (see Remote Diagnostics Service)
    LEDs for improved visual feedback
    Wiring quick disconnects
    Fast and easy configuration checking
    • Speed
    Reduces the time to audit data with a best-in-class audit trail
    Communicates alarms, events and configuration changes in seconds
    Fast 100 MHz 32-bit processor
    One second updates on all outputs
    Up to ¼ second frequency updates
    Up to 115 Kbps serial communications
    Transducer sampling is 32 times per second and measurement is updated every ¼ second
  • Improved Accuracy
Reduced lost and unaccounted gas with exceptional low-flow accuracy and linearity throughout calibrated flow range
    • Reliability
    Multiple board design
    Improved transient protection
    11-32 VDC operation with reverse polarity protection
    • Functionality
    Meter Archive Logs - 100 days of hourly logs, 1 year of daily logs, and 3000 Events log: alarm/audit
    Internal CPU board temperature and voltage monitoring with alarms
    Error checking and correcting memory