When buying an ammonia flow meter, a number of factors need to be considered in order to ensure that the most suitable equipment is selected. Here’s a detailed buying guide:
Understand the properties of ammonia
- Corrosion: Ammonia has a certain corrosiveness, so the material and sealing performance of the flow meter are crucial.
- Conductivity: The conductivity of ammonia needs to be above 20S/m, so the electromagnetic flowmeter is recommended for ammonia flowmeter.
Define measurement requirements
- Measuring range: According to the actual needs to choose the flow meter can cover the minimum and maximum flow.
- Measurement accuracy: The accuracy of ammonia flowmeter should be within ±0.5% to ensure the accuracy of measurement.
- Temperature and pressure: Considering the actual working environment, choose a flowmeter that can adapt to the required temperature and pressure range.
Material selection
- Measuring electrode and lining: According to the ammonia concentration and temperature conditions, choose the right electrode and lining material to extend the flow meter life and ensure the measurement accuracy.
- Overall material: Choose material with good corrosion resistance, such as PVC, PTFE, etc.
Installation and maintenance
- Installation method: According to the field pipe layout and installation method requirements (flange or clamp), choose a flow meter that is easy to install and maintain.
- Maintenance requirements: Understand the maintenance cycle and requirements of the flow meter to ensure that the use of the process can get timely technical support and after-sales service.
Other considerations
- Signal output mode: Determine the desired output type and communication interface, such as analog output, digital output, or communication protocol, for connection and integration with other devices.
- Power supply mode: Select the appropriate power supply mode according to the on-site power supply conditions to ensure the stable operation of the flowmeter.
- Split or integrated flow meter: Choose split or integrated flow meter according to whether the installation position is convenient for reading.
Matters needing attention
- Avoid measuring liquids with low conductivity: Electromagnetic flowmeters are not suitable for liquids with very low conductivity, such as petroleum products.
- Avoid measuring gases and liquids containing bubbles: Gases and liquids containing large bubbles can affect the measurement accuracy of the electromagnetic flowmeter.
- Pay attention to temperature limits: Electromagnetic flowmeters may not work properly in high temperature environments, so pay attention to temperature limits.
To sum up, the purchase of ammonia flow timing, need to consider ammonia characteristics, measurement needs, material selection, installation and maintenance and other factors, combined with the actual needs and use of the environment, choose the most suitable flowmeter.