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HTC Instruments DM-91 Digital Multimeter

HTC Instruments DM-91 Digital Multimeter

Model number
DM-91

3½-digit (1,999 count) manual-range digital multimeter with terminal shutter interlock, 10 A AC/DC current, capacitance, frequency, temperature and hFE test. CAT III 600 V.

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Key features

  • 3½ digits, 1,999 counts, manual ranging
  • Terminal shutter interlock mechanism
  • Auto power off
  • Data hold
  • Transistor hFE test
  • Temperature with K-type thermocouple
  • Backlight
  • Diode test and continuity buzzer

Specifications

DC voltage
Ranges (resolution)200 mV (0.1 mV), 2 V (1 mV), 20 V (10 mV), 200 V (100 mV), 1000 V (1 V)
Accuracy200 mV: ±⁠(0.5% + 1 digit); 2 V – 200 V: ±⁠(0.5% + 3 digits); 1000 V: ±⁠(0.8% + 3 digits)
AC voltage
Ranges (resolution)2 V (1 mV), 20 V (10 mV), 200 V (100 mV), 700 V (1 V)
Accuracy2 V – 200 V: ±⁠(1.0% + 5 digits); 700 V: ±⁠(1.2% + 5 digits)
DC current
Ranges (resolution)20 µA (10 nA), 2 mA (1 µA), 200 mA (100 µA), 10 A (10 mA)
Accuracy20 µA: ±⁠(1.2% + 3 digits); 2 mA: ±⁠(1.0% + 3 digits); 200 mA: ±⁠(1.5% + 5 digits); 10 A: ±⁠(2.0% + 10 digits)
AC current
Ranges (resolution)20 mA (10 µA), 200 mA (100 µA), 10 A (10 mA)
Accuracy20 mA: ±⁠(1.2% + 5 digits); 200 mA: ±⁠(2.0% + 5 digits); 10 A: ±⁠(3.0% + 10 digits)
Resistance
Ranges (resolution)200 Ω (0.1 Ω), 2 kΩ (1 Ω), 20 kΩ (10 Ω), 200 kΩ (100 Ω), 20 MΩ (10 kΩ), 200 MΩ (100 kΩ)
Accuracy200 Ω: ±⁠(1.0% + 10 digits); 2 kΩ – 200 kΩ: ±⁠(1.0% + 1 digit); 20 MΩ: ±⁠(1.0% + 5 digits); 200 MΩ: ±⁠(5.0% + 20 digits)
Capacitance
Ranges (resolution)2 nF (1 pF), 200 nF (0.1 nF), 2 µF (1 nF), 200 µF (100 nF)
Accuracy2 nF – 2 µF: ±⁠(4.0% + 3 digits); 200 µF: ±⁠(5.0% + 3 digits)
Frequency
Range (resolution)200 kHz (100 Hz)
Accuracy±⁠(1.5% of reading + 10 digits)
Temperature
Range (resolution)−20 to 1000 °C (1 °C)
Accuracy−20 to 0 °C: ±⁠(5.0% + 5 digits); 0 to 400 °C: ±⁠(1.0% + 3 digits); 400 to 1000 °C: ±⁠(2.0% + 3 digits)
Transistor hFE test
Range0 – 1000 (NPN or PNP)
Test conditionsBase current 10 µA, VCE 3 V
General
Safety categoryCAT III 600 V
Power1 × 9 V (6F22)
DimensionsH 191 × W 82 × D 36 mm
WeightApprox. 310 g
AccessoriesTest leads, fuse, manual, 'K' type thermocouple, holster and battery

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

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