LH-089 - Measuring equipment Omnitronic - Free user manual and instructions
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| Product Type | Digital Multimeter / Measuring Equipment |
| Dimensions (approx.) | 180 x 80 x 35 mm |
| Weight | Approximately 200 g (including battery) |
| Power Supply | 9V block battery (6LR61/6F22) |
| Display | LCD, 3 1/2 digits, max. reading 1999 |
| DC Voltage | 200 mV / 2 V / 20 V / 200 V / 1000 V (±0.5% + 5 digits) |
| AC Voltage | 200 V / 750 V (±1.2% + 10 digits) |
| DC Current | 200 µA / 2 mA / 20 mA / 200 mA / 10 A (±1.0% + 5 digits) |
| Resistance | 200 Ω / 2 kΩ / 20 kΩ / 200 kΩ / 2 MΩ (±0.8% + 5 digits) |
| Diode Test | Yes, with audible continuity |
| Data Hold | Function to freeze current reading |
| Overload Protection | Fuse protection for current ranges |
| Operating Temperature | 0°C to 40°C (relative humidity ≤75%) |
| Storage Temperature | -10°C to 50°C |
| Accessories Included | Test probes, 9V battery, user manual |
| Cleaning and Maintenance | Disconnect test leads and remove battery. Clean with a dry, soft cloth. Do not use solvents or abrasive cleaners. |
| Safety Standards | IEC 61010-1, CAT II 1000V / CAT III 600V |
| Spare Parts / Repairability | Replacement test leads and fuses available. For battery, use standard 9V block. Repairs only by qualified personnel. |
| General Information | Portable device for electrical measurements. Suitable for hobbyists, technicians, and basic professional use. |
Frequently Asked Questions - LH-089 Omnitronic
How do I use the Omnitronic LH-089 to measure DC voltage?
Turn the selector dial to the DC voltage range (V with a straight line). Connect the black test lead to COM and red to VΩmA. Apply the probes to the circuit ensuring correct polarity. Read the value on the LCD.
How do I replace the battery in the LH-089?
Turn off the device and disconnect all test leads. Remove the back cover by sliding or unscrewing. Replace the 9V battery with a new one (6LR61/6F22). Reattach the cover securely.
Why does the display show '1' or 'OL'?
The display shows '1' or 'OL' (overload) when the measured value exceeds the selected range. Switch to a higher range. For AC voltage, ensure the range includes the expected voltage.
Can I measure current above 200 mA?
Yes, for currents up to 10A, move the red test lead to the 10A jack. The selector must be set to the 10A range. Do not exceed 10A for more than 10 seconds to avoid overheating.
How do I perform a continuity test?
Set the dial to the diode/continuity position (often marked with a diode symbol or sound wave). Connect the probes. If resistance is less than about 30Ω, the device will beep continuously. This indicates a closed circuit.
What is the input impedance of the LH-089?
The input impedance is typically 10 MΩ for DC voltage measurements. This high impedance minimizes loading effect on the circuit being measured.
Is the LH-089 safe for mains voltage measurement?
Yes, it is rated CAT II 1000V and CAT III 600V, meaning it can safely measure mains voltages within these categories. Always use proper test leads and follow safety precautions.
How do I clean my LH-089 multimeter?
Disconnect test leads and remove battery. Wipe the casing with a dry, soft cloth. For stubborn dirt, slightly dampen the cloth with water. Never use chemicals or submerge the device.
What does the data hold button do?
The data hold button (usually marked HOLD) freezes the current reading on the display. Press it again to release. This is useful when measuring in a confined space where you cannot view the display.
How accurate is the LH-089?
Accuracy varies by range: DC voltage (±0.5% + 5 digits), AC voltage (±1.2% + 10 digits), resistance (±0.8% + 5 digits). Digits refer to the number of least significant digits counted. Calibration is recommended annually for critical measurements.
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USER MANUAL LH-089 Omnitronic
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Product information
Brand : Omnitronic
Model : LH-089
Category : Measuring equipment