TH2821A is a portable LCR digital bridge with the capability to measure parameters such as inductance, capacitance, resistance, and impedance. It is designed with a microprocessor control and low power consumption, suitable for component manufacturers and maintenance personnel testing requirements.
This manual introduces the TH2821A handheld LCR digital bridge, a micro‑processor‑controlled, low‑power instrument for measuring inductance, capacitance, resistance, impedance, loss factor and quality factor. It includes safety precautions, warranty details, and step‑by‑step operating instructions.
The document also lists technical specifications such as measurement ranges, frequency options, display resolution, power options, and physical dimensions, along with guidance on calibration, sorting functions, and battery charging procedures. This manual is written in Chinese.
| Measurement parameters | L‑Q, C‑D, R‑Q, Z‑Q |
|---|---|
| Test frequencies | 100 Hz, 120 Hz, 1 kHz, 10 kHz |
| Display digits | 5‑digit main and sub‑parameters |
| Inductance range | 0.0001 µH – 9999 µH |
| Resistance range | 0.0001 Ω – 9.999 MΩ |
| Power consumption (working) | < 25 mA (typical) |
| Weight | ≈ 400 g (including battery) |
| Dimensions | 40 mm × 95 mm × 200 mm (H × W × L) |
The instrument is covered by a two‑year warranty from the date of shipment.
Charging normally takes 2–3 hours, with a maximum charging time of about 3 hours.
The TH2821A can be powered by a 9 V battery or an external DC 12 V, 100 mA power adapter.
No, the instrument is intended for indoor use only.