Introduction to Common Measurement Units in Instruments

A measurement unit is a specific quantity that is defined and adopted by convention to quantitatively express the magnitude of the same kind of quantity. Any other quantity of the same type can be compared with it so that the ratio between the two can be expressed by a number. Measurement units are given names and symbols according to convention. Each physical quantity has its own unit of measurement, which is standardized based on selected substances under specified conditions. At different times and in different disciplines, the choice of basic quantities may vary. Commonly used measurement units include pressure, temperature, level, flow, and angle.

I. Pressure Measurement Units

By establishing unified pressure measurement units, such as Pascal (Pa) and technical atmosphere (kgf/cm²), data in pressure measurement can be compared and understood across different regions and industries. Refer to the table below for the different pressure measurement units, followed by some corresponding product examples.

Mining Flameproof Pressure Transmitter (MPa)

Mining Flameproof Differential Pressure Transmitter (KPa)

II. Temperature Measurement Units

1.Fahrenheit (℉): A unit of temperature measurement.

2.Celsius (℃): A widely used temperature scale around the world. Celsius has been included in the International System of Units (SI).

3.Kelvin (K): The SI unit of thermodynamic temperature, also known as the absolute temperature scale.

In China, Celsius is the most commonly used temperature unit, while other requirements can be determined according to customer needs. Product examples:

Mining Flameproof Temperature Transmitter (℃)

Mining Intrinsically Safe Temperature Transmitter (℃)

III. Level Measurement Units

Level measurement units usually involve length or volume. Commonly used units include:

1.Meter (m)

2.Millimeter (mm)

Other level measurement requirements can be customized according to customer needs. Product examples:

Float Level Transmitter (mm)

Mining Flameproof Level and Temperature Sensor (mm)

IV. Flow Measurement Units

1. Cubic meters per hour (m³/h)

2. Liters per minute (L/min)

It should be noted that different fields and industries may adopt different flow units, and the choice depends on customer requirements. Product examples:

Mining Flameproof Turbine Flow Sensor (m³/h)

Oval Gear Flow Display Controller (L/min)

V. Angle Measurement Units

An angle is formed by a vertex and two rays. The unit of angle measurement is the degree (°). Angles are generally classified as acute, right, obtuse, straight, and full angles. Other measurement requirements can be customized according to customer needs. Product examples:

Mining Flameproof Tilt Sensor (°)

Mining Flameproof Angle Sensor (°)