Liquid Ammonia Flow Meter

 Why need liquid ammonia flow meter?

Liquid ammonia (NH3) has wide applications in industrial production as a coolant, refrigerant, and nitrogen (N2) source, used in refrigeration systems, nitrogen protection, and amino fertilizer production. It is also a key ingredient in making chemicals like ammonia, hydrogen nitrate, and urea. We should remember that liquid ammonia is toxic and corrosive, so we need to be careful when choosing the right liquid ammonia flow meters, such flow sensors with carbon steel or iron may not work.

For factories that make soda ash (Sodium Carbonate), measuring the mass or volume flow rate of liquid ammonia (NH3) is a key part of making sure that production runs smoothly and efficiently. These factories can keep track of how much liquid ammonia they use in real time by accurately measuring it. This lets them change their production settings as needed and avoid wasting money and materials. Especially in the process of alkali production, the amount of liquid ammonia used is relatively large, and its flow stability directly affects the production conditions and economic benefits.

 Why it is difficult to measure liquid ammonia (NH3)?

The measurement of liquid ammonia flow faces three core difficulties:

1. firstly, it is highly corrosive and requires extremely high material and sealing requirements for the measuring equipment, requiring the use of corrosion-resistant materials and sealing components;

2. Secondly, high precision is required, and only precise measurement can achieve precise control of the production process;

3. Thirdly, the flow rate is prone to fluctuations, and external factors such as temperature and pressure can affect the stability of the flow rate. It is necessary to rely on appropriate technology and equipment to ensure reliable measurement.

 Therefore, selecting suitable measuring equipment and performing proper installation and maintenance are prerequisites for ensuring accurate and stable measurement of liquid ammonia flow rate. 

Why choose Coriolis flow meter for liquid ammonia? 

Coriolis flowmeter is the best flow meter for liquid ammonia measurement if your budget is enough.

It is based on advanced Coriolis force principle and is suitable for measuring liquid media such as liquid ammonia.

Coriolis flow meter advantages are significant:

1. Coriolis flow sensers has high measurement accuracy, up to 0.1%, and can accurately read even under low flow rate and low density conditions of liquid ammonia;

2. Coriolis flow transmitters supports measurement of multiple parameters at the same time. In addition to flow rate (both with mass flow and volume flow) , it can also totazlized the total flow , and monitor liquid NH3 density, temperature and other data in real time, providing comprehensive fluid information;

3. The liquid mass flow sensor is made of 316L stainless steel material (or option with other material such as titanium), which can be stably adapted to liquid ammonia measurement for a long time;

4. The maintenance cost is low, Coriolis flow meters sensor part is made with 2 measuring tube, so it has no moving parts, a simple structure, and does not require routine maintenance, which can effectively reduce downtime;

5. Coriolis flow meter has a wide measurement range and can adapt to different flow rates and flow conditions, from extremely low flow such as 10 kg/hr to high flow such as 30 t/h, silverinstruments has complete solutions to meet  the needs of the entire production process;

6. Coriolis has excellent stability and can work continuously and reliably in harsh environments.

 Technical parameters for Coriolis flow meter

The core technical parameters of Coriolis mass flowmeter are as follows:

• The power supply adopts 24VDC or 220VAC, and the power is usually less than 20W;

• the accuracy level of liquid ammonia measurement is 0.1% to 0.5%, and the repeatability is between ± 0.05% and ± 0.06%;

• Output signal supports (4-20) mA current signal and pulse/frequency signal, equipped with RS485 (MODBUS) communication protocol;

• The flow sensors sizes specifications cover DN1 to DN200, and commonly used models for liquid ammonia measurement are 1/2 ", 1", 2 ", 3", and 4 ";

• Density measurement accuracy ± 0.003g/cm ³, measurement range 0.5-1.5g/cm ³, temperature measurement accuracy ± 1 ℃;

• The working environment temperature of the sensor is -40 ℃ to 60 ℃,

• and the suitable medium temperature range is -50 ℃ to 200 ℃.