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Electromagnetic Flow Meter Converters: Signal Transmitters and Data Modules
Quick Answer: Silver Automation Instruments makes electromagnetic flow meter converters with 4-20 mA HART, pulse, and RS485 Modbus outputs. Our signal transmitters and wireless data modules let you send flow data to a PLC, SCADA system, or cloud platform. We stock converter models for sensor diameters from DN10 up to DN2000, and we ship them to water plants, chemical factories, and food processing lines in Southeast Asia, Africa, and Latin America.
Why a Separate Converter Tells You More Than a Compact Meter
A remote converter mounts in a control room while the sensor sits on the pipe. This matters when the pipe runs in a pit, a hot zone, or an area with heavy vibration. A paint manufacturer in Thailand told us their compact magmeter screen became unreadable after three months because of humidity. We replaced it with a remote SIL-EMF converter and an IP68 sensor. The display is now inside an air conditioned panel, and the operators can read total flow and velocity without walking to the pipe. Remote electronics also make it easier to add a data module later. You can keep the sensor in place and swap or upgrade the converter without cutting the pipe.
Transmitter Outputs That Fit Real Control Systems
Our converters deliver 4-20 mA with HART protocol as standard. Pulse output is configurable, and most units support RS485 Modbus RTU. For a wastewater plant in Peru, we supplied converters with dual outputs: 4-20 mA for the local PLC and Modbus for the central SCADA. That avoided extra signal splitters. Some models include a PT100 input for temperature compensation, helpful in CIP systems where fluid temperature swings from 4 °C to 85 °C. We also build Ex d and Ex ia certified converters for ATEX Zone 1 and Zone 2. These go to oil and gas terminals in the Middle East and chemical storage areas in Africa. If you need Profibus DP or Foundation Fieldbus, we can preload the communication stack for you.
Data Modules That Turn a Flow Meter into an IIoT Node
Here is the thing. Most engineers skip data modules until the plant manager asks for remote access. Then they rush to add them. Silver Instruments offers plug in 4G, NB-IoT, and Ethernet data modules that connect straight to the RS485 port of the converter. The module reads flow, totalizer, and diagnostic flags and pushes them to an MQTT broker or an HTTP endpoint. A water well field in Zambia uses our SIL-DT01 4G module to send daily abstraction volumes to a cloud dashboard. The local regulator checks the data online. No field visit needed. The module stores data on a local SD card if the network is down. For customers who prefer local data logging, we have USB data modules with 16 GB memory. In practice, a food ingredients exporter in Vietnam logs flow
How to Pick the Right Converter and Module Combination
Start with the output signals your control system accepts. If you only need 4-20 mA, the SIL-EMF-C1 converter is enough. Cost is lower and setup is fast. For diagnostic data and remote ranging, choose SIL-EMF-C2 with HART. Most water and wastewater projects in Australia and New Zealand go with C2. When you need Modbus and a data module port, pick SIL-EMF-C3. This converter has a built-in RS485 interface and a slot for an optional wireless module. You can even order the module pre-installed and tested. Power supply options include 24 V DC and 85-260 V AC. All converters have a backlit LCD, keypad, and IP67 aluminum or stainless steel housing. For corrosive atmospheres near the coast, we recommend the optional coating. Because salt spray damages electronics faster than most engineers expect.
Send us your pipe size (DN), fluid conductivity (µS/cm), temperature, pressure, and required output. Our application engineers will suggest a converter and sensor pair. Reach us at [email protected], Tel: +86-135-1213-1526, or WhatsApp: 86-135-12131526. WeChat: +86 13512131526.
FAQ: Electromagnetic Flow Meter Converters and Data Modules
Can I connect a Silver Instruments converter to an old electromagnetic flow sensor from another brand?
Yes, if the sensor coil resistance and electrode signal match our input specs. Tell us the sensor make, model, and coil resistance. We will check the compatibility and set the converter excitation current.
What is the maximum cable length between the sensor and the remote converter?
We supply matched signal cables with double shielding. Standard length is 10 meters, but we have done installations up to 50 meters with our preamplifier option. For distances over 50 meters, we recommend placing a junction box with a local preamplifier.
Do your data modules support OPC UA or MQTT?
Our 4G and Ethernet modules can publish data via MQTT Sparkplug B. For OPC UA, we offer a gateway module that sits between the RS485 network and the client. Most customers start with MQTT and add OPC UA later if they have an existing UA architecture.
Can I get an ATEX Zone 1 certificate for the converter?
Yes. Our Exd and Exia certified remote converters are approved for ATEX, IECEx, and NEPSI. Specify the zone and gas group when you request a quote.
What information do you need to quote a converter and data module?
We need the fluid name or conductivity, pipe DN, line pressure, temperature, power supply (24 V DC or AC), required outputs (4-20 mA, HART, Modbus, pulse), and whether you need a data module. Send these details to [email protected]. We usually reply within one working day.
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