Ohmmeter Series Type Manufacturer,Supplier and Exporter in India
Product Code : SCL-EAE-11326
A series-type ohmmeter places the unknown resistance in series with the meter movement, an internal DC source and a limiting or adjusting resistance. The resulting current depends on the total circuit resistance, allowing the instrument scale to indicate the approximate resistance under test.
The apparatus helps learners understand why an analog ohmmeter scale is nonlinear and reversed compared with many voltage or current scales. The exact measuring range, internal source voltage, meter sensitivity, resistor values, panel material and connection arrangement were not supplied and must be confirmed before ordering.
Key Features
Series-ohmmeter principle: Demonstrates resistance measurement using a series-connected meter circuit.
Analog scale interpretation: Helps students understand the relationship between meter deflection and resistance.
Zero-adjustment study: Introduces the calibration procedure used before analog resistance measurements.
Open- and short-circuit comparison: Shows the meter response at very high and very low resistance.
Continuity testing: Supports basic investigation of conducting and open circuit paths.
Visible circuit learning: Connects the internal battery, resistor, meter and test terminals with the measured result.
STEM laboratory value: Suitable for supervised physics and introductory electronics practicals.
Technical Specifications
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Ohmmeter Series Type technical information |
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Specification |
Detail |
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Product name |
Ohmmeter Series Type |
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Brand |
Lab Exports |
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Equipment type |
Analog resistance-measurement training apparatus |
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Operating principle |
Unknown resistance connected in series with the meter circuit |
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Typical circuit elements |
Meter movement, DC source, limiting or adjusting resistance and test terminals |
What's Included in the Kit
One Ohmmeter Series Type apparatus.
Test leads, resistance samples, internal source and experiment manual only when listed in the accepted quotation.
Applications and Uses
Demonstrating the operating principle of a series ohmmeter.
Measuring compatible unknown resistances.
Studying zero-ohm adjustment and scale calibration.
Testing basic electrical continuity.
Comparing open-circuit and short-circuit indications.
Explaining nonlinear analog resistance scales.
Comparing readings with a Digital Ohms Meter 20KΩ.
Testing known values from a Resistance Box 500 Ohms.
How to Use the Ohmmeter Series Type
Disconnect the component being tested from every external power source.
Inspect the meter, terminals and test leads for visible damage.
Join the test leads together to create a short-circuit condition.
Use the provided adjustment control to set the meter to zero ohms, where applicable.
Separate the leads and observe the open-circuit indication.
Connect the unknown resistance across the test terminals.
Read the resistance value from the appropriate scale.
Repeat the measurement with known resistors to compare the results.
Safety note: Never connect an ohmmeter to an energised circuit. External voltage can damage the meter and create an electrical hazard.
Care and Maintenance
Keep the meter window, terminals and test leads clean and dry.
Do not overload the movement or force the adjustment control.
Remove or isolate the internal source during prolonged storage where instructed.
Store the apparatus in a dry, dust-controlled cabinet.
Why Choose Lab Exports
Lab Exports manufactures and exports scientific instruments, experiment setups, science kits, mathematics kits, didactic models and STEM equipment. Its physics range includes resistance boxes, electrical meters, rheostats and circuit-training apparatus. The company supplies equipment for schools, colleges, universities and vocational laboratories. Buyers can confirm the measuring range and included accessories before production and dispatch.
Frequently Asked Questions
What is an Ohmmeter Series Type used for?
It is used to demonstrate and measure electrical resistance through a series-connected analog meter circuit.
Why is the ohmmeter scale nonlinear?
Meter current varies inversely with total resistance, so equal resistance changes do not produce equal pointer movements.
Why must the leads be shorted before measurement?
Shorting the leads allows the user to perform the zero-ohm adjustment and compensate for source condition and circuit resistance.
Can an ohmmeter test a live circuit?
No. The circuit must be isolated and de-energised before resistance or continuity testing.
What does an open circuit indicate?
An open circuit represents extremely high resistance and normally produces little or no meter deflection.
What resistance range does this apparatus provide?
The exact range was not supplied. It should be confirmed in the technical quotation before ordering.
Request the confirmed resistance range, meter specification and supplied accessories, or explore the complete Electrical and Electronics Laboratory Equipment range. A compatible laboratory source can be reviewed on the Battery Eliminator page.
