Do you have a question about the Center 221 and is the answer not in the manual?
Type | Sound Level Meter |
---|---|
Accuracy | ±1.4 dB |
Resolution | 0.1dB |
Microphone | 1/2 inch Electret Condenser microphone |
Display | LCD |
Measuring Range | 30 dB to 130 dB |
Frequency Range | 31.5 Hz to 8 kHz |
Frequency Weighting | A, C |
Time Weighting | Fast, Slow |
Operating Temperature | 0°C to 40°C |
Specifies altitude, operating and storage temperature, and humidity limits for the device.
Defines symbols used in the manual for attention, dangerous voltage, and double insulation.
Details digital display, overload indication, sample rate, power source, dimensions, and accessories.
Outlines accuracy, ranges, and overload protection for ACA, ACV, and resistance measurements.
Explains display icons like Low Battery, Data Hold, Continuity, Voltage, Amperage, and Ohm indicators.
Procedure for measuring AC current using the clamp meter, including safety notes.
Instructions for measuring AC voltage using test leads and the appropriate selector.
Guidelines for measuring resistance, emphasizing power disconnection and capacitor discharge.
How to perform continuity tests, noting the beeper indication for low resistance.