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HTC Instruments DM-88 True RMS Digital Multimeter

HTC Instruments DM-88 True RMS Digital Multimeter

Model number
DM-88

3¾-digit (3,999 count) true RMS digital multimeter with auto/manual ranging, CMOS/TTL logic test, capacitance, frequency, duty cycle, temperature and hFE test.

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Key features

  • 3¾ digits, 3,999 counts
  • True RMS
  • Auto / manual range
  • CMOS and TTL logic test
  • Duty cycle
  • Temperature with thermocouple probe
  • Transistor hFE test
  • Auto power off
  • Backlight

Specifications

DC voltage
Ranges (resolution)400 mV (0.1 mV), 4 V (1 mV), 40 V (10 mV), 400 V (100 mV), 1000 V (1 V)
Accuracy400 mV – 400 V: ±⁠(0.5% of reading + 5 digits); 1000 V: ±⁠(1.0% of reading + 5 digits)
AC voltage (true RMS)
Ranges (resolution)4 V (1 mV), 40 V (10 mV), 400 V (100 mV), 750 V (1 V)
Accuracy4 V – 400 V: ±⁠(0.8% + 10 digits); 750 V: ±⁠(1.0% + 10 digits)
DC current
Ranges (resolution)400 µA (0.01 µA), 4000 µA (1 µA), 40 mA (10 µA), 400 mA (100 µA), 4 A (1 mA), 20 A (10 mA)
Accuracy400 µA – 4 A: ±⁠(1.0% + 5 digits); 20 A: ±⁠(2.0% + 5 digits)
AC current
Ranges (resolution)400 µA (0.01 µA), 4000 µA (1 µA), 40 mA (10 µA), 400 mA (100 µA), 4 A (1 mA)
Accuracy400 µA – 4 A: ±⁠(1.5% + 10 digits)
Resistance
Ranges (resolution)400 Ω (0.1 Ω), 4 kΩ (1 Ω), 40 kΩ (10 Ω), 400 kΩ (100 Ω), 4 MΩ (1 kΩ), 40 MΩ (10 kΩ)
Accuracy400 Ω: ±⁠(0.8% + 5 digits); 4 kΩ – 400 kΩ: ±⁠(0.8% + 1 digit); 4 MΩ – 40 MΩ: ±⁠(1.2% + 5 digits)
Capacitance
Ranges (resolution)4 nF (1 pF), 40 nF (10 pF), 400 nF (100 pF), 4 µF (1 nF), 40 µF (10 nF), 200 µF (100 nF)
Accuracy4 nF: ±⁠(5.0% + 8 digits); 40 nF – 40 µF: ±⁠(3.5% + 8 digits); 200 µF: ±⁠(5.0% + 8 digits)
Frequency
Ranges (resolution)10 Hz (0.001 Hz), 100 Hz (0.01 Hz), 1000 Hz (0.1 Hz), 10 kHz (1 Hz), 100 kHz (10 Hz), 1 MHz (100 Hz), 10 MHz (1 kHz)
Accuracy±⁠(0.5% of reading + 4 digits)
Temperature
Range (resolution)−40 to 1000 °C (1 °C); −40 to 1832 °F (1 °F)
AccuracyBelow 400 °C: ±⁠(1.0% + 5); 400 °C and above: ±⁠(1.5% + 15); below 750 °F: ±⁠(1.0% + 5); 750 °F and above: ±⁠(1.5% + 15)
Logic test
High levelCMOS > 4.0 V; TTL > 2.5 V
Variable levelCMOS 2.0 – 4.0 V; TTL 0.8 – 2.5 V
Low levelCMOS < 2.0 V; TTL < 0.8 V
Diode and continuity
DiodeDisplays forward voltage drop; forward current approx. 0.8 mA, reverse voltage approx. 2 V
ContinuityBuzzer sounds continuously below 50 Ω; open-circuit voltage 2 V
Transistor hFE test
Range0 – 1000 (NPN or PNP)
Test conditionsBase current approx. 15 µA, VCE approx. 4.5 V
General
Power2 × 1.5 V AAA
DimensionsH 170 × W 86 × D 35 mm
WeightApprox. 290 g
AccessoriesTest leads, user manual, TP04 temperature probe and batteries

Specifications are from the manufacturer's published information. Confirm critical values with us or the datasheet before ordering.

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