HTC DM-91 Digital Multimeter Owner’s Manual
- July 3, 2024
- HTC
Table of Contents
HTC DM-91 Digital Multimeter
Product Information
Specifications
- Display : 1,999 count
- Auto Power Off under natural operation
- Terminal Shutter Interlock Mechanism
- Transistor Testing
- DC Voltage Range: 200mV – 1000V
- DC Current Range: 10nA – 10A
- Temperature Range
- AC Voltage Range: 2V – 700V
- AC Current Range : 20mA – 10A
- Resistance Range: 200 ohms – 200M ohms
- Capacitance Range
- Frequency Range
- Power: 9V (6F22) x 1
- Dimensions : H191 x W82 x D36 mm
- Weight : Approx. 310 Gms.
- Accessories : Test leads, Fuse, Manual, TP04 Thermocouple, Battery
Product Usage Instructions
-
Powering On the Digital Multimeter
To power on the DM-91 Digital Multimeter, press the power button located on the device. Ensure the battery is properly inserted. -
Selecting Measurement Function
Rotate the dial to select the desired measurement function such as AC/DC Voltage, Current, Resistance, Capacitance, Frequency, Temperature, Diode, etc. -
Taking Measurements
Connect the test leads to the appropriate terminals on the multimeter and then to the circuit or component being measured. Read the measurements displayed on the screen. -
Auto Power Off Feature
The multimeter has an auto power-off feature for energy conservation. It will automatically turn off if left idle for a certain period. -
Transistor Testing
To test transistors, set the multimeter to the transistor testing mode and follow the instructions provided in the user manual for accurate results.
Symbols
FEATURES
- 3½ DIGIT MANUAL MULTIMETER
- 1,999 COUNT
- AUTO POWER OFF
- UNDER NATURAL OPERATION
- TERMINAL SHUTTER INTERLOCK MECHANISM
- TRANSISTOR TESTING
DC VOLTAGE
| RANGE | RESOLUTION | ACCURACY |
|---|---|---|
| 200mV | 0.1 mV | ±0.5% of rdg ±1 digit |
| 2V | 1mV | **** |
±0.5% of rdg ±3 digits
20V| 10mV
200V| 100mV
1000V| 1V| ±0.8% of rdg ±3 digits
DC CURRENT
| RANGE | RESOLUTION | ACCURACY |
|---|---|---|
| 20µA | 10nA | ±1.2% of rdg±3 digits |
| 2mA | 1µA | ±1.0% of rdg±3 digits |
| 200mA | 100µA | ±1.5% of rdg±5 digits |
| 10A | 10mA | ±2.0% of rdg±10 digits |
TEMPERATURE
| RANGE | RESOLUTION | ACCURACY |
|---|---|---|
| -20~0ºC | **** |
1ºC
| ±5.0% of rdg±5 digits
0~400ºC| ±1.0% of rdg±3 digits
400~1000ºC| ±2.0% of rdg±3 digits
TRANSISTOR hFE TEST
- RANGE: NPN or PNP
- RESOLUTION: 0-1000
- ACCURACY: 1b=10μF/VCE=3A
AC VOLTAGE
| RANGE | RESOLUTION | ACCURACY |
|---|---|---|
| 2V | 1mV | **** |
±1.0% of rdg ±5 digits
20V| 10mV
200V| 100mV
700V| 1V| ±1.2% of rdg ±5 digits
AC CURRENT
| RANGE | RESOLUTION | ACCURACY |
|---|---|---|
| 20mA | 10µA | ±1.2% of rdg±5 digits |
| 200mA | 100µA | ±2.0% of rdg±5 digits |
| 10A | 10mA | ±3.0% of rdg±10 digits |
RESISTANCE
| RANGE | RESOLUTION | ACCURACY |
|---|---|---|
| 200Ω | 0.1Ω | ±1.0% of rdg±10 digits |
| 2kΩ | 1Ω | **** |
±1.0% of rdg±1 digits
20kΩ| 10Ω
200kΩ| 100Ω
20MΩ| 10kΩ| ±1.0% of rdg±5 digits
200MΩ| 100kΩ| ±5.0% of rdg-10 digits±20 digits
CAPACITANCE
RANGE
2nF
200nF
| RESOLUTION
1pF
0.1nF
| ACCURACY
±4.0% of rdg±3 digits
---|---|---
2µF
200µF
| 1nF
100nF
| ****
±5.0% of rdg±3 digits
FREQUENCY
- RANGE: 200KHz
- RESOLUTION: 100Hz
- ACCURACY: ±1.5% of rdg±10 digits
POWER : 9V (6F22) X 1
- Dimension : H191 x W82 x D36 mm
- Weight : Approx. 310 Gms.
- Accessories : Test leads, Fuse, Manual TP04 Thermocouple & Battery.
- Qty : 42 Pcs. in a Box.
FAQ
Q: How do I change the batteries in the multimeter?
A: To change the battery, locate the battery compartment on the back of the
multimeter, remove the old battery, and insert a new 9V (6F22) battery
following the correct polarity.
Q: What does the Low Battery Indication mean?
A: The Low Battery Indication on the display signifies that the battery power
is running low and needs to be replaced to ensure accurate measurements.
Q: Can this multimeter measure both AC and DC current?
A: Yes, the DM-91 Digital Multimeter can measure both AC and DC current within
its specified ranges.
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>