Monitor and manage sound as a simple noise detector.
■Features ● Manages sounds at construction sites and machine noises within factories. Monitors the sounds of machines and equipment. Manages product quality based on the volume of operational sounds. ● Equipped with alarm contacts, making it very effective for noise monitoring and product management when connected to rotating lights or buzzers. ● Large digital display for easy reading. ● All operations are performed from the front panel. ● DIN standard panel size (96×96mm). ● Microphone cable can be extended up to 100m. ● Built-in oscillator allows for easy adjustment of the recorder. ● Standard equipped with AC and DC outputs. ● DC output is either 4–20mA or 1–5V. Applicable Standards: Measurement Law, JIS C1502, IEC60651 type2 Microphone: 1/2 inch electret condenser microphone Frequency Correction Circuit: A characteristic (C, F, or BP characteristics are also acceptable) Frequency Range: 20–8000Hz Indication and Alarm Range: 50–100dB (other levels are also acceptable) Indication Accuracy: ±1.5dB Digital Display: 3.5 digits Detection Method: RMS detection Time Constant: FAST (or SLOW) is also available Display Cycle: 2.5 times/second
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basic information
■Options ● All-weather windscreen ■Specifications ● Measurement range and frequency correction circuit Measurement range: 70–120dB, 60–110dB, 50–100dB, 40–90dB Measurement range: A, C, F, BP BP: Band-Pass Filter *For specifications outside the ranges above, please contact us. BP is optional. Please specify the measurement range and frequency correction circuit when placing an order.
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Applications/Examples of results
Over-scale: Displays [1 .] when exceeding the maximum value Calibration signal: 1kHz sine wave for external device calibration Signal output: AC (Alternating Current) 4Vrms (maximum indication) DC (Direct Current) 4–20mA (or 1–5V is also acceptable) Alarm display: ALARM lamp lights up in red Alarm output: Relay contact output: 1 circuit transfer Relay contact capacity: AC120V 6A, DC24V 5A Alarm delay time: The duration of noise exceeding the alarm set value before the alarm is triggered can be adjusted between 0.5 to 30 seconds Alarm reset: Automatic return (manual or external signal reset is also possible) (self-holding type alarm is optional) Power supply: AC90–130V, AC180–260V, 50/60Hz 10VA Operating temperature and humidity range: -10 to 50°C, below 95% Dimensions and weight: Main unit: 96(W)×96(H)×120(D)mm, approximately 800g Microphone + preamplifier: approximately 60g Standard configuration: Main unit ×1 Microphone ×1 Microphone cable (5m) ×1 Microphone windscreen ×1 Microphone holder ×1 *Power cable to be provided by the customer Options: All-weather windscreen TYPE1851
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