20mF Capacitance Meter ( HTC – CM-1500 )

Description

The HTC CM‑1500 Digital Capacitance Meter is a professional-grade instrument crafted for technicians, engineers, educators, and hobbyists who demand accurate, fast, and safe capacitance testing. Built around a 3½‑digit, 1,999‑count LCD display, this meter combines high visibility with intuitive operation, delivering precision in a compact, durable package.

The meter offers nine wide-ranging capacitance testing steps—from 200 pF up to 20 mF encompassing ranges like 200 pF, 2 nF, 20 nF, 200 nF, 2 µF, 20 µF, 200 µF, 2000 µF, and 20 mF—covering most passive component requirements. Resolution varies from 0.1 pF at the low end to 10 µF at the high end, while accuracy maintains an impressive ±(0.5% of reading + 1 digit) for ranges up to 200 µF, and ±(2% + 2 digits) for the 20 mF range.

This capacitance meter incorporates essential safety and convenience features. It includes automatic capacitor discharge protection to safely discharge tested components, preventing residual charge from harming the device or user. The Low Battery indicator alerts when voltage drops below approximately 7.5 V, helping to avoid unstable readings. Inactivity beyond around five minutes triggers Auto Power Off, conserving energy during downtime.

A built-in zero‑adjustment knob allows accurate fine‑tuning before measurements, particularly useful in the smallest ranges (under 20 nF), to eliminate stray lead capacitance.

Performance-wise, the CM‑1500 measures capacitance with a test frequency optimized per range: 800 Hz for smaller ranges up to 2 µF, 80 Hz for 20 µF, and 8 Hz for ranges above 200 µF. This targeted frequency selection enhances accuracy and stability. Sampling occurs around three times per second, giving responsive yet stable readings ideal for component testing or labeling task.

helping to avoid unstable readings. Inactivity beyond around five minutes triggers Auto Power Off, conserving energy during downtime. A built-in zero‑adjustment knob allows accurate fine‑tuning before measurements, particularly useful in the smallest ranges (under 20 nF), to eliminate stray lead capacitance.

Performance-wise, the CM‑1500 measures capacitance with a test frequency optimized per range: 800 Hz for smaller ranges up to 2 µF, 80 Hz for 20 µF, and 8 Hz for ranges above 200 µF. This targeted frequency selection enhances accuracy and stability. Sampling occurs around three times per second, giving responsive yet stable readings ideal for component testing or labeling tasks.

The meter is powered by a standard 9 V battery (6F22) and delivers a long operational lifespan—up to 200 hours with alkaline batteries in lower capacitance tests. Power consumption remains low (around 3–4 mA for ranges up to 200 µF), offering reliable field and bench usage.

Designed for usability, the CM‑1500 comes with standard alligator test leads, a holster carrying case, and user manual, ensuring immediate deployability in labs, workshops, or classroom environments. At approximately 185 × 93 × 35 mm and weighing around 270 g, the unit is both portable and sturdy, suitable for test benches or fieldwork setups.

Operational safety is enhanced by overload detection—when capacitance exceeds the range, the display shows “1” as an over-range warning. And before measurements, users are advised to fully discharge capacitors above 250 V to avoid damage or erroneous readings.

Key Features at a Glance:

• Wide Capacitance Range: 200 pF to 20 mF across nine selectable ranges

• High Resolution: 0.1 pF to 10 µF depending on range

• Accuracy: ±(0.5% +1 digit) up to 200 µF; ±(2% +2 digits) for 20 mF

• Display: Large-format 3½-digit LCD (1,999 count) with clear icons

• Protection & Safety: Capacitor discharge protection, overload indication

• Power Management: Low-battery alert, Auto Power Off (~5 min idle)

• Fast Sampling: 3 readings/second; range‑specific test frequencies (800 Hz–8 Hz)

• Convenience: Zero-adjust knob for calibration under 20 nF

• Accessories & Power: 9 V battery-powered; includes test leads, holster, manual

• Form Factor: Compact (185×93×35 mm), lightweight (~270 g) for field or bench use

Ideal Applications:

The CM‑1500 is suited for:

• Electronic component testing—capacitor verification in manufacturing, quality control, or repair.

• Laboratory and R&D use, from prototype evaluation to lab bench diagnostics.

• Educational settings and labs where students learn capacitor characteristics and measurement techniques.

• Field maintenance in industrial environments, where quick capacitance checks and safety are important.

• PCB diagnostics to check capacitor functionality during troubleshooting.

Benefits for Users:

This meter offers reliable linearity and stability, providing accurate testing across small to large capacitance components. Its discharge protection ensures operator and device safety, while zero-adjustment and over-range indication aid in precise and error-free measurements. The large LCD makes readings visible in varied environments, and its sampling speed allows fast component verification. Compact and lightweight, it’s easy to carry between test benches or while traveling for on-site servicing. The Auto Power Off and long battery life support uninterrupted usage in daily workflows.

In summary, the HTC CM‑1500 stands out as a dependable capacitance meter combining wide-range capability, safety features, user comfort, and portability. With precise accuracy, discharge protection, zero‑adjust control, and responsive display, it suits professionals and educators who test capacitors in diverse conditions—from lab benches to workshop to classroom.