Máy đo độ chính xác kíp nổ điện QJ41 Loại bút đo điện trở DC QJ41A kiểu hiển thị kỹ thuật số Máy đo độ chính xác kíp nổ điện

The QJ41 electric detonator tester is a portable pocket instrument, which is suitable for detecting the DC resistance of electric explosion networks and electric detonators in mining areas, troops, and factories. The product should be used in the field conditions where the ambient air temperature is -40 ~ +50 ℃ and the relative humidity does not exceed 98% .
Main Specifications

Measuring range		Basic error ( % )	Center scale	Error calculation method
Electric detonator	Ⅰ 0 ～3 Ω	± 1.5	1.25 Ω	Satisfaction value
	Ⅱ 3 ～9 Ω		5.5 Ω
Conductive thread	Ⅲ  0 ～3k Ω	± 2.5	100 Ω	Scale length

1. Power: 1.5V ( . 1 Section . 1 No. batteries)
2. The maximum current that the tester passes through the electric detonator under test does not exceed 27mA (Note).
3. Dimensions: 150 × 96 × 66 ( mm ) L × W × H
4. Weight: 1kg (Note) The maximum current does not exceed 27mA , which refers to the case of incorrect operation. Under correct operation conditions, the current through the electric detonator does not exceed the following values:
Measurement Ⅰ: 6 mA      
Measurement II: 7.1mA    
Measurement Ⅲ: 13.6 mA
※The tester has a reading and lighting device, which is suitable for night blasting operations.