Digital Milli Volt and Milli-Amp Source and Meters Manufacturer,Supplier and Exporter in India
Product Code : EL-DMI-1034
Jlab Export is a leading Digital Milli Volt and Milli-Amp Source and Meters Manufacturer,and suppliers in India
Digital Milli Volt and Milli-Amp Source and Meters (code EL-DMI-1034) is a thermocouple calibrator that supplies continuously variable outputs of 0–200 mV DC and 0–200 mA, with a 3.5-digit display and a built-in digital voltmeter. It is used in instrumentation, heat-transfer and electrical measurement labs to feed known small signals into temperature indicators and meters. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Instrument type | Thermocouple calibrator: millivolt and milliamp source with digital meter |
| Voltage output | 0–200 mV DC, continuously variable |
| Current output | 0–200 mA, continuously variable |
| Output selection | Current or voltage output selected by a front-panel control |
| Display | 3.5-digit |
| Measurement | Output source voltage; an unknown external voltage can also be read through the front-panel control (as listed) |
| Source impedance (voltage source) | 2 ohms |
| DVM input impedance | More than 10 megohms |
| Cabinet size | 75 mm (H) x 185 mm (W) x 220 mm (D) |
| Quality check | Each instrument is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-DMI-1034 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Millivolt and Milliamp Source Used For?
A thermocouple produces a small DC voltage, in the millivolt range, that depends on the temperature difference between its junctions. Instead of heating a real sensor, a technician can feed a known millivolt signal from this source into a temperature indicator, controller or recorder and check that it reads the matching temperature from the thermocouple tables. The milliamp output does the same job for meters and instruments that take a current signal. Because the voltage source has a low output impedance of 2 ohms, its output changes little when a load is connected, and the built-in voltmeter’s input impedance of more than 10 megohms means it hardly loads the circuit it measures.
Typical users are instrumentation and control labs in engineering colleges and polytechnics, heat-transfer and thermal labs, ITI electrician and instrument-mechanic workshops, and maintenance departments that check temperature panels. Start each check from zero output, raise the setting slowly, and confirm the polarity before connecting the leads to the instrument under test.
What to Specify When Ordering
- Quantity — the minimum order is 10 units.
- Your mains supply voltage, as the listing does not state the input.
- Any thermocouples or a thermocouple calibration rig you want quoted with it.
Frequently Asked Questions
What outputs does the calibrator give?
A continuously variable DC voltage of 0–200 mV and a continuously variable current of 0–200 mA. A front-panel control selects whether the current or the voltage output is used.
Can it also measure voltages?
Yes. The 3.5-digit display shows the output source voltage, and the listing states that an unknown external voltage can be read through the front-panel control; the built-in voltmeter has an input impedance of more than 10 megohms.
Why does a low source impedance matter?
With a voltage-source impedance of 2 ohms, very little of the set millivolt signal is lost across the source when an instrument is connected, so the instrument under test sees close to the value set.
How big is the cabinet?
75 mm high, 185 mm wide and 220 mm deep, which fits easily on a bench beside the instrument being checked.
Who manufactures it?
JLab, the trading name of Jain Laboratory Instruments Pvt Ltd, makes it at its works in Ambala, Haryana, India.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a manufacturer of digital measuring instruments and lab equipment in India, incorporated in 2017 and located on Hargolal Road, Ambala, Haryana. The calibrator is assembled in JLab’s own works, not bought from a trading house, so colleges, workshops, dealers and importers buy factory-direct; every unit is inspected visually before dispatch and repeat orders are handled by the maker. JLab exports worldwide and ships to buyers in every region — for example Slovenia in Southern Europe, Algeria in North Africa, Jordan in the Middle East, El Salvador in Central America and the Caribbean, and Eswatini in Southern Africa.
Related Instruments and Thermocouple Items
- Thermocouple Calibration Test Rig — calibrates thermocouples in ice and boiling water with a digital mV meter and temperature indicator.
- Type K Thermocouple — a nickel-chromium / nickel-alumel thermocouple, the common general-purpose type.
- A.C. Milli Voltmeter Type — a mains-operated meter for AC millivolt signals.
- Digital Potentiometer — reads electrode potential in millivolts for potentiometric chemistry work.
See all Digital Measuring Instruments or the full Scientific Instrument range.
Request a Quote
Quotes come direct from the manufacturer. Use Add To Cart on this page, or send the quantity (minimum 10 units), your mains voltage, any thermocouples you need and the delivery location through the contact page.
Last updated: 9 October 2026
