STM-100 - Uncategorized Steren - Free user manual and instructions
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| Product Type | Digital Multimeter |
| Brand | Steren |
| Model | STM-100 |
| Display | 3.5-digit LCD, 2000 counts |
| DC Voltage Range | Up to 600 V |
| AC Voltage Range | Up to 600 V |
| DC Current Range | Up to 10 A |
| Resistance Range | Up to 20 MΩ |
| Diode Test | Yes |
| Continuity Buzzer | Yes |
| Power Source | 9V battery (NEDA 1604) |
| Dimensions | Approx. 150 x 70 x 30 mm |
| Weight | Approx. 200 g |
| Safety Rating | CAT II 600 V |
| Included Accessories | Test leads, 9V battery, user manual |
| Cleaning and Care | Wipe with dry cloth; do not use solvents |
| Spare Parts and Repairability | Replaceable test leads and fuse |
| Operating Temperature | 0°C to 40°C |
Frequently Asked Questions - STM-100 Steren
How do I measure AC voltage?
To measure AC voltage, turn the rotary switch to the V~ position. Insert the black test lead into the COM jack and the red lead into the VΩmA jack. Connect the leads in parallel to the circuit and read the value on the LCD.
How do I measure DC current?
Set the rotary switch to the appropriate A range. Insert the black lead into COM and the red lead into the 10A jack for currents above 200mA, or the VΩmA jack for lower currents. Break the circuit and connect the meter in series to measure the current.
How do I test continuity?
Set the switch to the continuity (buzzer) symbol. Connect the leads to the circuit. If the resistance is low (typically below 50Ω), a buzzer sounds, indicating a complete path.
How do I replace the battery?
Turn off the multimeter and disconnect the test leads. Remove the screw on the back cover and take off the case. Replace the 9V battery with a new one, ensuring correct polarity, then reassemble.
What does the OL reading mean?
OL stands for Overload and indicates the measured value exceeds the selected range. When measuring resistance, it also indicates an open circuit. Choose a higher range if possible.
How do I measure resistance?
Turn the switch to the Ω position. Connect the test leads to the resistor or circuit. For accurate results, ensure the component is isolated from the circuit and no voltage is present.
Is the multimeter auto-ranging or manual?
The Steren STM-100 is manual-ranging. You must select the appropriate range for the measurement. If the reading is OL, switch to a higher range.
What safety precautions should I take?
Always start with the highest range and lower it as needed. Never measure voltage or current that exceeds the CAT II 600V rating. When measuring current, never connect the meter across a voltage source.
How do I interpret accuracy specs?
Accuracy is stated as a percentage plus a digit count. For example, 1.2% ±2 digits means the reading can vary by 1.2% plus 2 counts. This ensures you understand the meter's precision.
Does the STM-100 measure frequency or capacitance?
This model focuses on basic measurements: voltage, current, resistance, and continuity. It does not include frequency or capacitance functions. Upgrade to a more advanced model for those features.
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USER MANUAL STM-100 Steren
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Product information
Brand : Steren
Model : STM-100
Category : Uncategorized