- Continuity Beeper
- Data-Hold Function
- Small Size, Lightweight
- Power Source: UM-4 or AAA 1.5 batteryx2
- Resistance: 0.1 to 400 Ohm to 40M Ohm
- Capacitance: 10pF to 1000uF
The Importance of Clamp Meter in HVAC System
A specific instrument is required to measure parameters such as current and voltage. Analog and digital multimeters are frequently used to measure current, but they require that the circuit be severed so that the instrument’s test leads may be placed in series into the circuit. In many circumstances, this is not practicable or practical. Cutting the circuit introduces additional hazards, such as electric shock.
In such cases, clamp meters are an excellent alternative. This article provides an in-depth description of how to use a clamp meter as well as safety considerations. A clamp meter is a clothespin-shaped gadget that measures the current carried by a live wire by clamping it around it. Clamp meters use the magnetic field created by current flowing through a wire as a measuring mechanism to determine the current value.
Unlike multimeters, this design has the benefit of being able to measure current without cutting the circuit under measurement.
Safe Use of Clamp Meters
Clamp meters are simple devices that can measure current and other parameters by clamping around a wire that does not need to be cut. They are simple to operate safely because all that is required is that the instrument is clamped around a wire. However, if used incorrectly, these gadgets can be deadly. As a result, to guarantee safe use, adhere to this article’s recommendations and precautions for selecting and using clamp meters.
Clamp meters have the following advantages:
- Quick measuring saves money and effort.
- They may be used in loud electrical conditions.
- It has a clear appearance and may be used for measures in tight spaces.
- Wide range measurement.
- They have an ergonomic shape that fits in your palm while wearing safety equipment.
How should I select a clamp meter?
Clamp meters come in a range of variants tailored to specific uses, such as whether they are meant to measure DC or AC current. As a result, you must select an instrument based on your intended use. To measure a battery in a car or an uninterruptible power supply (UPS) or a solar cell. For example, you’ll need a clamp meter to measure DC current.
An AC clamp meter, on the other hand, is required to measure load current or leakage currents in an AC circuit, such as lighting or power lines in a home, building, or facility. Select an AC load current clamp meter for routine measurement applications, or a leakage current clamp meter if you need to measure leakage currents produced by insulation flaws of current flowing through an electrical equipment ground wire.
Here is a checklist to help you pick the best clamp meter in your price range:
- Current minimum and maximum levels.
- Your application’s safety installation category rating.
- Resolution and precision are required to correctly estimate the minimal amount of current.
- Maximum conductor size and access jaw size.