Milliohm meter low resistance tester
I. Overview:
HR390 is a small milliohm meter, which can be used for measuring resistance milliohm meter, easy to use.
Product application:
● Measure the resistance value;
Third, the technical parameter table:
1 Resistance measurement range 0.001 ～ 120 Ω
2 Resolution of resistance measurement 1 mΩ
3 Capacitance measurement range 10pf ～ 20000uf
4 Capacitance resolution 1pf
5 Working voltage 7 ～ 12 VDC
6 Working current <100 mA
7 Dimensions 57 * 45 * 20 mm length X width X height
Fourth, the interface description and related operations
P1 wiring definition:
No.Symbol Meaning
1 VDD power supply positive (7V ~ 12V)
2 GND Module power negative
P3 wiring definition:
No.Symbol Meaning
1.R + connected to measuring resistance
2. R- to measure the resistance
3.CAP is connected to the positive electrode of the measuring capacitor
4. GND is connected to the negative electrode of the measurement capacitor
Fourth, the key description
FUN: Switch between measuring capacitance or resistance.
Mes / Cal: Calibration (resistance short-circuit measurement line calibration, capacitance open-circuit measurement line calibration)
