English
Micro Motion (Emerson) is a widely used Coriolis brand, and many plants standardised on it years ago. When a Micro Motion Coriolis meter has to be replaced, added to a new line, or kept as a spare, some engineers look at other options to shorten lead time or fit a tighter budget.
Silver Automation Instruments offers the SH-CMF Coriolis mass flow meter as an alternative for these applications. This guide shows how to select an equivalent SH-CMF meter by line size, flow range, accuracy, process conditions and outputs, and where it makes more sense to keep the original brand.
Micro Motion meters have a strong track record, and there is nothing wrong with staying with them. The reasons we usually hear for looking at an alternative are practical:
In each case, the question is the same: what information is needed to select a meter that does the same job?
Before asking for a quotation, collect the following from the nameplate, datasheet or DCS configuration of the current Micro Motion coriolis meter. With this list we can select the SH-CMF size and options in one round.
| Item | Where to find it | Why it matters |
|---|---|---|
| Model code (sensor and transmitter) | Nameplate on sensor and transmitter | Shows tube design, size and options |
| Line size and connection | Pipe drawing or nameplate | Flange class or tri-clamp, face-to-face length |
| Fluid name, density, viscosity | Process datasheet | Sizing, pressure drop, material choice |
| Normal / max / min flow | DCS trend or process datasheet | Selects the sensor size, not just the pipe size |
| Operating and design temperature | Process datasheet | Selects the temperature range option |
| Operating and design pressure | Process datasheet | Selects the pressure rating |
| Output signals in use | Wiring drawing or transmitter menu | 4-20 mA, pulse, HART, RS485/Modbus, Profibus PA |
| Hazardous area requirement | Area classification | Explosion-proof version needed or not |
| Required accuracy | Specification sheet | Selects the accuracy class |
The table below lists SH-CMF sizes with their nominal flow ranges. Use it to find the SH-CMF size that covers your normal and maximum flow. Correct coriolis meter sizing often means one size smaller than the pipe when the flow is low, so check flow first and pipe size second. This is a cross-reference by size and flow range only; installation length should be checked against your existing meter's datasheet.
| Line size | Inch (approx.) | SH-CMF model | Nominal flow range |
|---|---|---|---|
| DN1 | micro | SH-CMF-1 | 0–10 kg/h |
| DN2 | micro | SH-CMF-2 | 0–70 kg/h |
| DN3 | 1/8" | SH-CMF-3 | 0–150 kg/h |
| DN6 | 1/4" | SH-CMF-6 | 0–200 kg/h |
| DN10 | 3/8" | SH-CMF-10 | 0–1500 kg/h |
| DN15 | 1/2" | SH-CMF-15 | 0–3.0 t/h |
| DN20 | 3/4" | SH-CMF-20 | 0–7.0 t/h |
| DN25 | 1" | SH-CMF-25 | 0–13 t/h |
| DN40 | 1-1/2" | SH-CMF-40 | 0–22 t/h |
| DN50 | 2" | SH-CMF-50 | 0–33 t/h |
| DN65 | 2-1/2" | SH-CMF-65 | 0–60 t/h |
| DN80 | 3" | SH-CMF-80 | 0–100 t/h |
| DN100 | 4" | SH-CMF-100 | 0–160 t/h |
| DN125 | 5" | SH-CMF-125 | 0–230 t/h |
| DN150 | 6" | SH-CMF-150 | 0–300 t/h |
| DN200 | 8" | SH-CMD-200A / 200B | 0–400 / 0–500 t/h |
| DN250 | 10" | SH-CMD-250 | 0–800 t/h |
| DN300 | 12" | SH-CMD-300 | 0–1500 t/h |
If your current meter runs near the bottom of its range most of the time, tell us the actual flow. A smaller sensor, down to the micro low-flow coriolis range below about 200 kg/h, often gives better low-flow performance than matching the old size.
The table below lists the SH-CMF options most often compared with an existing Micro Motion coriolis meter.
| Specification | SH-CMF standard | Options |
|---|---|---|
| Accuracy, liquid | 0.2% | 0.15%, 0.1% |
| Accuracy, gas | 0.5% | — |
| Fluid temperature | -50 to 150 °C | -50 to 250 °C, -50 to 350 °C, -200 to 150 °C (cryogenic) |
| Pressure rating | 1.6 MPa | 2.5, 4.0, 20, 25, 32 MPa; higher on request |
| Wetted material | 316L | Hastelloy C-276, Hastelloy B3, Alloy 20, titanium, tantalum and others |
| Process connection | Flange | Tri-clamp, weld thread, compression fitting |
| Outputs | 4-20 mA, frequency/pulse | 0-5 V |
| Communication | RS485/Modbus | HART, Profibus PA |
| Design | Compact | Remote transmitter with cable |
| Hazardous area | Explosion-proof version available | — |
| Power supply | 24 V DC | 220 V AC |
Mass flow, density and temperature are measured directly, and volume flow is calculated from mass and density, the same measuring principle used by all coriolis meters.
The examples below come from SH-CMF projects we have supplied. Customer details are removed; process data is shown as received.
| Fluid | Line size | Process conditions | What mattered |
|---|---|---|---|
| Fluorinated specialty liquids (C4F6, RL-316 type) | 1/2"–3/4" | 0.5–100 kg/h, -27 to 10 °C, density about 1600–1800 kg/m³ | Low flow, high density, low temperature |
| Heavy fuel oil on a vessel | 4" | Normal 100 t/h, max 160 t/h, 150 °C (max 240 °C), max 8 bar | High-temperature option, compact design |
| Glucose syrup | 3" | 1,600–2,200 cP, 7.2 m³/h, 45–55 °C | Viscous fluid, pressure drop check |
| Sunflower oil | DN50 | Max 30 t/h, max 80 °C, 6 barg | 4-20 mA flow rate plus 1 pulse per kg to PLC |
| LNG | DN150 | -162 °C operating, 13 barg | Cryogenic temperature option |
The five applications above cover the most common reasons buyers choose coriolis in the first place: direct mass measurement, density, and independence from viscosity changes.
A replacement decision should be honest about both sides.
SH-CMF is a good fit when:
Keep the original brand when:
If you are not sure which side your application falls on, send the details and we will tell you plainly.
Send us the checklist above, or simply a photo of the nameplate of your current meter plus the fluid, flow range, temperature and pressure. We reply within 24 hours with the selected SH-CMF model code and a quotation. Standard delivery time is normally 10–12 working days after payment.
we will contact you within 24 hours..
Questions about density, gas service, hazardous areas and outputs are answered in the SH-CMF FAQ. The questions below are specific to replacing a Micro Motion meter.
