Product Introduction

The comprehensive calibration device for mining safety instruments and meters independently developed by Zhengzhou Aidi Technology is primarily used for the metrological verification of methane sensors, carbon monoxide sensors, carbon dioxide sensors, oxygen detectors, and other instruments employed in monitoring and control systems within the coal mining industry.

Execution Standards

JJG (Coal) 09-98 "Verification Regulation for Carbon Monoxide Detection and Alarm Instruments," JJG678-2007 "Verification Regulation for Catalytic Combustion Methane Detectors"

Technical Parameters

1. Output flow rate: Adjustable (30–300) ml/min; Flowmeter: Grade 2.5.

2. Electrical parameter measurement:

a. Current measurement range: (0–2) A, accuracy class 0.2% F.S;

b. Voltage measurement range: (0–20) V, accuracy class 0.2% F.S;

c. Frequency measurement range: (0–10) kHz, accuracy class 0.01% F.S.

3. Acceptable sensor signal types: Frequency, current, RS485.

4. Verifiable items (subject to variation depending on the instrument):