YF-303 Analog Multimeter
- transistor tester
- circuit tester
Application
•ndication of zero correction:Before measuring, place the pointer on zero position of the scale left by adjusting the screw of zero corrector.
•Range selection:
When measuring an unknown value of voltage or current, start from the highest range, then adjust to a proper lower range. Measurement is more accurate as near to the full scale, for resistance measurement, near to the middle scale.
•OFF range:
After measurement place range selector to OFF range. This is to prevent pointer from swaying and to protect multitester.
Features
- Core magnet movement:
- Avoids interruption of external magnetic field.
- Double protection device:
- Diode to protect movement，fuse to protect parts of circuit board.
- Handy stand attached，with wide visual for easy readout.
- With DC 12A measuring range.
Specifications
- Dimensions: 146(L) x 98 (W) x 37mm (H)
- Weight: about 255 g(including batteries).
- Power supply: 006P 9V 1pc, 1.5V/UM3 batteries *2.
- Operating temperature and humidity: 0℃~40℃,0%~80% RH.
- Fuse:5Ø*20mm 0.5A 1pc.
MEASUREMENT RANGES AND PERFORMANCE
| As a transistor tester | |||
| Leakage current (iceo)(LI) |
0-150μA atx1K range 0-15mA atx10 range 0-150mA atx1 range |
±5% of arc | Current across terminals |
| DC current amplification factor(hFE) |
0~1000 at x 10 range | ±3% of arc | With connector extra |
| As a circuit tester | |||
| Measurement | Measurement ranges | Allowance | Remarks |
| DC Voltage (DCV) |
0-0.3V-3V-12V- 30V-120V-300V-1200V Battery 1.5VCheck 0-1.5V |
±3% fs | Input impedance 20KΩ/V |
| AC Voltage (ACV) |
0-6V-30V-120V-300V-1200V | ±4% fs | Input impedance 8KΩ/V |
| DC Current (DCmA A) |
0-0.06m A(60μA)-3m A- 30m A-0.3A-12A， 0.06m A at 0.3V DC position |
±3% fs | Voltage drop 300m V |
| Resistance (Ω) |
•Range x1-x10-x1K-x10K •Minimum 0.2-2-200-2Ｋ(Ω) •Midscale 20-200-20K-200K(Ω) •Maximum 2K-20K-2M-20M(Ω) |
±3% of arc | Internal batteries UM-3x2 006Px1 |
| AF output (dB) |
-10dB-+17dB at AC6V position 0dB/0.775V (1mW through 600Ω) -10dB-+63dB (ACV all ranges) |
±4% fs | 8KΩ/V for out put terminal |
US 8894 
GB 8184 
CA 7646 
AU 7283 
IE 5103 
NZ 3568 
BR 3143 
VN 877 
