PBSI Group - Weir Electrical

Meters & Instruments

P&B Weir Electrical manufacture a wide variety of electromechanical meters and indicators for current and voltage measurement. In addition we provide a range of meters and other educational equipment which are popular as robust teaching aids in classrooms or technical colleges.


CL3 Maximum Demand (LOAD) Indicators:

The 'C' series indiciators are designed for use with current transformers having 5 amp secondaries. The basic indicator has a maximum scale reading of 6 amp which allows a 20% overload on the nominal current.

Click Here to view the CL3 Maximum Demand Indicator Leaflet

MD Proving Unit:

The MD Proving Unit is a product designed to test and prove the function of the Voltage Detector type DS/MS/VA. This battery powered portable test unit must be used to test the Voltage Detector prior to and after being used on site, to confirm that the Voltage Detector is in working order.

Click Here to view the MD Proving Unit Leaflet





Educational Instrument Range:

P&B Weir Electrical have supplied electrical instruments for learning to schools and higher education institutions and colleges for many years.

The elegant design of our meters and instruments coupled with our easy of use helps to enhance the learning and understanding experiences of the student.

Our product range includes:

Appliance Power Check Meter APC682:This self-contained unit is ideal for the study of current and power consumption of domestic appliances used in everyday life. It visually displays the effect of using energy-efficient appliances to an increasingly energy-conscious audience. 

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Multi-dial Class Demonstration Instrument: The M202 and M203 Class Demonstration Instruments are a verstaile range of insruments. The large analogue display makes them suitable for general class demonstration work in both Secondary and Further Education.

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SM Series Analogue Student Meter: The SM series of Student Meters is a range of DC moving-coil Voltmeters, Ammeters and Galvanometers specifically designed for easy use by students during science experiments.

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SMD Series Digital Student Meters: This series comprises five dual-range Digital Student Meters which cover most of the AC and DC voltage and current measurement requirements of today's science courses. All meters are protected against overload and will tolerate accidental connection to the mains supply.

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SM302 Universal Student Meters: The SM302 Universal Student Meter is a versatile instrument designed for use with interchangeable scale slides and accessories for the measurement of AC and DC voltage and current.

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Accessories: A range of accessories has been designed to provide cost-effective versatility to both Student and Demonstration Meters.

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Power Supply Unit LV269: The LV269 is a continuously variable low voltage, medium current power supply unit with 0-13V AC and 0-17V DC output. It is ideal for many educational and industrial laboratory uses.

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Power Supply Unit LV277: The LV277 is a stepped variable low voltage, medium current power supply unit to output a range of AC and DC voltages. It is ideal for many educational and industrial laboratory uses.

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If you require specific information on any of our products, please do not hesitate to e-mail us at  weir@pbsigroup.com and we will get back to you!