UniMass-U

1. Overview

Walsn CNG series Coriolis mass flowmeters are our latest high pressure products. Harnessing V-shaped flow tubes with a greater thickness, a digital signal processor (DSP), and integrated digital closed-loop vibration control (DLC) signal processing makes Walsn CNG series a unique product. The transmitter simultaneously calculates outputs and performs diagnostic functions, to provide reliable high accuracy measurement, with a wide range of capabilities. Hart communication and Modbus control allow online node-configuration, diagnostics and data recording to be handled remotely. The transmitter also features a user friendly interface for those preferring direct control.

The CNG Series flowmeter not only provides mass flow rate, but also measures density, temperature, volumetric flow rate, total flow and component fractions online and in real-time.

The CNG series is specially designed for the CNG industry, with a focus on compressed natural gas measurement for dispensers in applications such as passenger cars, light-duty and heavy-duty vehicles.

2. Features

◆ Twin V-shaped tubes reduce pressure loss and achieve high sensitivity, even in high pressure applications

◆ Dedicated ASIC with digital closed-loop control (DLC) improves the performance of gas flow measurement

◆ Dynamic vibration balance (DVB) technology enhances the system stability

◆ 2-point temperature compensation and process pressure compensation

3. Applicable Fluids

Compressed natural gas

4. Typical Applications

Gas dispensers for CNG

5. Environmental Conditions

◆Power consumption: ≤ 20W

◆ Enclosure rating: IP65, IP67, IP68 (Remote Style Options only)

◆Vibration limits:

a) a = 0.5g

b) Endurance sweep, under the condition of 20Hz ~ 400Hz frequency for 50 sweep cycles

◆ Impact limits: If the flowmeter is well-packed, its performance will not be affected by the following impacts:

a) Acceleration: 50m/s²

b) Impact frequency: 60 times/min ~100 times/min

c) Impact: 1000 times

◆ Ex approval: Ex d ib IIC T6 Gb

◆ Electromagnetic/Electrostatic compatibility

a) Electrostatic discharge: level 3

b) Electrical fast transient/burst (EFTB) resistance: level 3

6. Specifications