HTC Instruments DM-88 Logic Digital Multimeter

HTC Instruments DM-88 Logic Digital Multimeter

The HTC Instruments DM-88 is a versatile 3¾-digit digital multimeter designed for professionals and enthusiasts in electronics, electrical, and industrial sectors. With a 3,999-count display and True RMS measurement capability, it ensures accurate readings across a wide range of electrical parameters. Its logic testing functions, including TTL and CMOS, make it ideal for troubleshooting digital circuits.

🔑 Key Features

• 3¾-Digit Display: Offers a 3,999-count resolution for precise measurements.

• True RMS Measurement: Ensures accurate readings for both AC and DC signals, including non-sinusoidal waveforms.

• Logic Testing: Supports TTL and CMOS logic level testing for digital circuits.

• Capacitance Measurement: Measures capacitance from 10pF to 200µF.

• Frequency Measurement: Measures frequencies from 0.1Hz to 30MHz.

• Temperature Measurement: Measures temperature from -40°C to 1000°C using the included TP04 temperature probe.

• Transistor Testing: Tests hFE of transistors.

• Diode and Continuity Testing: Checks diodes and continuity with audible indication.

• Data Hold Function: Freezes the current reading on the display for easy recording.

• Max/Min Value Hold: Captures and displays the maximum and minimum readings.

• Auto Power Off: Conserves battery life by automatically turning off the device after a period of inactivity.

• Backlit LCD Display: Provides clear visibility in low-light conditions.

• Low Battery Indication: Alerts when the battery voltage drops below 2.4V.

📊 Specifications

• DC Voltage: 0.1mV to 1000V, ±(0.5% + 4 digits)

• AC Voltage: 0.1mV to 750V, ±(0.8% + 6 digits)

• DC Current: 0.1µA to 10A, ±(1.0% + 5 digits)

• AC Current: 0.1µA to 10A, ±(1.5% + 5 digits)

• Resistance: 0.1Ω to 40MΩ, ±(0.8% + 1 digit)

• Capacitance: 10pF to 200µF, ±(3.5% + 8 digits)

• Frequency: 0.1Hz to 30MHz, ±(0.5% + 4 digits)

• Temperature: -40°C to 1000°C, ±(0.8% + 4 digits)

• Input Impedance: 10MΩ

• Sampling Rate: 3 times per second

• Power Supply: 2 x 1.5V AAA batteries

• Dimensions: 170(H) x 86(W) x 35(D) mm

• Weight: Approximately 290g

• Safety Rating: CAT III 1000V

🛠️ Applications

• Digital Circuit Troubleshooting: Ideal for testing and diagnosing issues in TTL and CMOS logic circuits.

• Electrical Maintenance: Suitable for measuring voltage, current, resistance, and other parameters in electrical systems.

• Electronics Repair: Useful for diagnosing faults in electronic devices and components.

• HVAC Systems: Applicable for testing and maintaining HVAC control systems.

• Educational Use: Great for teaching and learning about electrical measurements and digital logic concepts.

•  DC Voltage: 0.1mV ~ 1000V, ±(0.5% + 4digit)
  – AC Voltage: 0.1mV ~ 750V, ±(0.8%+ 6digit)
  – DC Current: 0.1uA ~ 10A, ±(1.0% + 5digit)
  – AC Current: 0.1uA ~ 10A, ±(1.5% + 5digit)
  – Resistance: 0.1Ω ~ 40MΩ, ±(0.8% + 1digit)
  – Capacitance: 10pF ~ 200uF, ±(3.5% + 8digit)
  – Frequency: 0.1Hz ~ 30MHz, ±(0.5% + 4digit)
  – Temperature: -40°C～1000°C, ±(0.8% + 4digit)
  – Dimensions : 170(H) x 86(W) x 35(D)mm