电磁流量计（Electromagnetic flowmeter）是一种常用的流量测量仪器，通过测量导体内流动液体时受到的安培力来得到流体流量。在国际上，通常将电磁流量计称为Electromagnetic Flow Meter，简称EMF或EMFM。

电磁流量计的英文表示主要有以下几种：

1. Electromagnetic Flowmeter：

This is the most commonly used term to refer to an electromagnetic flowmeter. It accurately describes the device and its function.

2. Magnetic Flowmeter：

Another commonly used term is magnetic flowmeter. This term emphasizes the use of magnets in the device to measure flow.

3. EMF：

EMF is an acronym for electromagnetic flowmeter. It is often used in technical discussions or written materials for brevity.

4. EMFM：

EMFM is another abbreviation for electromagnetic flowmeter, similar to EMF. It is also used in technical contexts.

5. Magmeter：

Magmeter is a shortened form of magnetic flowmeter. It is commonly used in the industry and among professionals.

In conclusion, there are several common English expressions for the electromagnetic flowmeter, including electromagnetic flowmeter, magnetic flowmeter, EMF, EMFM, and magmeter. These terms are widely accepted and used in various technical discussions and references.