Panel Meters
Panel meters read and display voltage, current, power, energy and power quality data on a distribution board, ranging from a simple analogue ammeter to a multifunction meter feeding a building management system. NLS Power sources panel meters to IEC 61557 and IEC 62053 accuracy classes, with Modbus communication for sub-metering and tenant billing on Saudi commercial and industrial projects.
A panel meter is the instrument on the front of a distribution board that turns the current flowing through the busbars into a number someone can read, and the range runs from a single analogue voltmeter with a selector switch up to a multifunction digital meter measuring voltage, current, active and reactive power, power factor, frequency, energy consumption and harmonic distortion on every phase simultaneously.
Digital multifunction meters are now the default on any board above simple final distribution, because the incremental cost over an analogue meter is small against the value of the data: a facilities team that can see power factor trending down or a harmonic distortion spike building on one feeder catches a problem before it trips a breaker or damages equipment, rather than after. Accuracy class matters most where the meter feeds a billing decision. IEC 62053 sets accuracy classes for energy meters (commonly Class 0.5S or Class 1 for sub-metering and Class 0.2S where revenue billing accuracy is required), while IEC 61557 covers the broader family of electrical safety and measurement equipment used on LV installations.
Communication is what turns a meter from a local display into part of a monitoring system. Modbus RTU over RS-485 remains the common protocol for panel meters talking to a local PLC or gateway, with Modbus TCP or BACnet increasingly specified where the meter reports directly into a building management system alongside HVAC and lighting control points. Tenant sub-metering in mixed-use towers and industrial parks depends on this: a meter on each tenant's incoming feeder, reading to a common head-end system, is what makes usage-based billing possible instead of a flat service charge.
NLS Power sources panel meters from basic analogue instruments through multifunction digital meters with Modbus or BACnet output, sized to the accuracy class and communication protocol a project's metering schedule specifies. Quoting works from the meter count, accuracy class, and whether CTs are supplied alongside; NLS Power returns pricing in USD with delivery usually fast since meters are a standard catalogue item across most manufacturers.
Specifications
- ✓Energy meter accuracy classes per IEC 62053: Class 0.5S/1 for sub-metering, Class 0.2S for revenue-grade billing
- ✓Broader measurement and safety equipment reference: IEC 61557
- ✓Measures voltage, current, active/reactive power, power factor, frequency, energy, and total harmonic distortion
- ✓Communication: Modbus RTU (RS-485), Modbus TCP, or BACnet for building management integration
- ✓Analogue and digital multifunction meter options depending on board tier
- ✓Suited to tenant sub-metering, feeder monitoring and power quality trending
Frequently Asked Questions
What's the difference between an analogue and a digital panel meter?+
An analogue meter typically shows one value at a time through a needle and selector switch. A digital multifunction meter reads voltage, current, power, energy and harmonics on every phase at once and usually adds a communication output for remote monitoring.
Who supplies tenant sub-metering equipment in Saudi Arabia?+
NLS Power sources panel meters with Modbus or BACnet output for tenant sub-metering, matched to the accuracy class a building's billing model requires, for commercial and mixed-use projects across KSA.
What accuracy class does a revenue billing meter need?+
Revenue-grade billing typically requires Class 0.2S accuracy under IEC 62053. Internal sub-metering for cost allocation or trend monitoring is usually adequately served by Class 0.5S or Class 1 meters, which cost less.