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Emerson Mass Flow Meter Catalogue Overview: High-Precision Liquid and Gas Density Meters
Quick Answer: Emerson high-precision liquid and gas density meters are Coriolis mass flow meters from the Micro Motion catalogue. They measure direct mass flow, density, temperature and volume flow in one sensor. Silver Automation Instruments supplies a comparable Coriolis line for DN3 to DN150 pipes with 4-20 mA HART output and lower cost for industrial buyers.
What the Emerson Catalogue Covers
The Micro Motion catalogue groups meters by accuracy class and line size. The ELITE series covers high accuracy liquid and gas applications. Typical mass flow accuracy for liquid is plus or minus 0.05 to 0.1 percent of rate. Gas accuracy is usually plus or minus 0.25 to 0.5 percent of rate. Density accuracy can reach plus or minus 0.0005 grams per cubic centimetre. In a diesel loading line, a 0.05 percent shift on 30 tonnes is only 15 kilograms.
Temperature ranges are minus 50 to 200 degrees Celsius. Pressure ratings go from 40 bar standard to 100 bar or higher with special process connections. Outputs include 4-20 mA HART, Modbus RS485, and pulse. Process wetted parts are often 316L stainless steel, Hastelloy C-22, or titanium for seawater and aggressive acids.
Why Silver Instruments Lists This Catalogue for Industrial Buyers
We get asked about Emerson Micro Motion meters in tenders and audits. Many plants specify Micro Motion by name because it is a known reference. In practice, a large share of these lines do not need the top accuracy class. They need a reliable Coriolis meter with 0.1 to 0.2 percent mass flow accuracy for liquid. Silver Instruments supplies exactly that. Our Coriolis meters cover DN3 to DN150. Standard accuracy is plus or minus 0.1 to 0.2 percent of rate for liquid and plus or minus 0.5 percent for gas. Density accuracy is plus or minus 0.001 to 0.003 grams per cubic centimetre depending on the model.
Here is the thing. You can match a 2 inch diesel line with our Coriolis meter and save 30 to 50 percent against an equivalent Emerson Micro Motion setup. We have seen this on customer sites in Vietnam, Indonesia, Nigeria and Chile. The buyer gets direct mass flow, density, temperature and volume totalising. No separate densitometer is needed.
Model Selection for Liquid and Gas Density
Most engineers skip this part and pick a flow meter by line size only. That causes problems. For Coriolis meters, you need flow range in kilograms per hour, pressure in bar, temperature in degrees Celsius, density range in grams per cubic centimetre, and viscosity in centipoise. A heavy fuel oil line at 400 cP behaves differently from a light naphtha line at 0.4 cP. The sensor can handle both. You just need the right pressure drop calculation.
For liquid density on food grade syrup, chocolate mass or palm oil, we select a straight tube or bent tube Coriolis meter in 316L stainless steel. For gas density and mass flow on LPG or natural gas, the velocity is higher. You need a sensor with low pressure loss and enough flow calibration range. Silver Instruments recommends DN15 to DN50 for 50 to 5000 kilograms per hour of LPG. For compressed natural gas, DN25 to DN80 handles most skid packages.
Common Installation Issues on Density Meter Lines
Entrained gas is the biggest problem on liquid density lines. A Coriolis meter can still run, but the density reading becomes noisy. Because the sensor detects the combined mass of liquid and gas bubbles. Solution is to install a back pressure valve or a degassing vessel upstream. We have seen a dairy plant in Australia get a 2 percent density error from air drawn into a cream line. After adding 1.5 bar back pressure, re
Vibration is another issue. Coriolis meters work by vibrating the tubes at a high frequency. External pump vibration can shift the phase signal. Use pipe supports and flexible connections. Install the sensor away from the pump discharge and fast acting valves. Process pressure matters too. Low pressure can cause cavitation on hot liquids. Keep the meter full and keep the pressure above vapour pressure by at least 1 bar for most water and light hydrocarbon lines.
Typical Applications in Asia Pacific, Latin America and the Middle East
Our customers use these meters for diesel loading skids in Indonesia, palm oil blending in Malaysia, ethanol in Brazil, tomato paste in Chile, and produced water in Oman. A 3 inch Coriolis meter on a palm oil line measures mass flow, density and temperature. The 4-20 mA HART signal goes to a PLC. The RS485 Modbus output goes to a batching controller. No separate density meter is installed.
For a desalination plant brine line, we supply a titanium tube Coriolis meter with 100 bar rating. The density signal helps the operator track salt concentration. The mass flow signal gives direct kilograms per hour. Temperature output from the built in PT100 sensor removes a separate thermowell.
How to Get a Quote from Silver Instruments
Send us your pressure (bar), temperature (°C), pipe size (DN), and flow range (kg/h). Also send fluid name, density range and viscosity if known. We will select a Coriolis mass flow meter and reply with model number, accuracy, materials, power supply, outputs and price. You can also include a data sheet from an Emerson Micro Motion model. We will check flange size and process connection and offer a form fit or retrofit option. We supply ATEX Zone 1 and IECEx certified sensors for hazardous areas.
Contact Silver Instruments by phone at +86-25-68650347. WhatsApp is +86-25-52155837. WeChat is +86 15365082610. For more details, visit flow-meter.com.au.
FAQ
Can Emerson Micro Motion meters measure liquid and gas density in one device?
Yes. The Coriolis sensor gives direct density for both liquids and gases. The accuracy range varies by model. Gas density accuracy is normally less precise than liquid density accuracy because gas density is much lower.
What is the price difference between Emerson and Silver Instruments Coriolis meters?
Silver Instruments Coriolis meters usually cost 30 to 50 percent less for similar line sizes and outputs. The final price depends on wetted material, flange rating, hazardous area certification and transmitter type. We do not copy Emerson designs. We supply our own Coriolis sensor and transmitter.
Which model do you recommend for a 2 inch diesel line?
For a DN50 diesel loading line, we recommend a 316L stainless steel Coriolis meter with plus or minus 0.1 percent liquid mass flow accuracy. Use 4-20 mA HART output and pulse for batching. Provide the maximum flow rate in kilograms per hour or litres per minute.
Can a Coriolis meter handle entrained gas?
It can operate with small amounts of gas, but density accuracy and flow repeatability will drop. For better results, install a back pressure valve or gas eliminator upstream. If the flow stream has more than 5 percent gas by volume, we recommend a two-phase Coriolis model or a different measurement strategy.
What output options connect to a PLC or SCADA system?
Standard outputs are 4-20 mA HART, RS485 Modbus, and pulse. Optional outputs include Foundation Fieldbus and Profibus-PA on some models. Tell us your control system brand and input card type. We will match the output and register map.
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