Thiết bị đo điện trở tiếp xúc MPK-254 Tentech

The MPK-254 digital very low resistance ohmmeter is a portable, microprocessor-controlled instrument used to accurately measure resistances of switches and circuit breaker contacts, transformer and motor windings, wire and cable samples, joints in busbars, etc., using test currents from 1 mA up to 5 A. 
It uses the Kelvin-type, four-terminals measurement principle, thus eliminating errors caused by lead and contact resistances.

Test currents 
1 mA - 10 mA - 100 mA - 1 A - 5 A. 
Each current may be continuously adjustable from 0 to 100%. 

Resistance ranges 
0-20 mΩ @ 5 A. 
0-600 mΩ @ 5 A. 
0-200 mΩ @ 1 A. 
0-2000 mΩ @ 100 mA. 
0-20 Ω @ 10 mA. 
0-200 Ω @ 1 mA. 

Resolution 
1 µΩ @ 5 A.

Measurement principle 
Four-terminal, Kelvin-type. 

Output voltage 
Up to 10 Vc.c. (open circuit) @ 1 A.

Basic accuracy 
± 0.2% of reading ± 2 digits. 

Advanced features 
Digital direct reading of low resistances in the alphanumerical display, with up to 4½ digits. 

Teste current measurement 
The current is digitally measured and a bargraph shows the result. The bargraph indication is specially useful when measuring inductive loads, so that the operator can verify easily when the test current has been stabilized. 

Environmental protection 
IP54 with closed lid.