
Resistivity Tester
SYD-421A
Our resistivity tester is designed and made as per DL421-91. It is used to determine volume resistivity of insulating oil and other liquid medium. It can also be used to determine volume resistivity of fire resistant oil and solid substance. For fire resistant oil and other low temperature samples, the instrument is equipped with refrigeration device, so that it can change between high temperature and low temperature automatically. Thereby the bath temperature can be controlled to below 10 ℃. LCD display, intelligent and automatic temperature control, automatic measurement and the determination procedure can be done automatically. Our resistivity tester is composed of measurement oil cup, and heating and temperature controlling system.
Technical Parameters of Resistivity Tester
| 1. Measurement voltage | 500 V, DC; |
| 2. Measurement range | 107~1013 Ω cm |
| 3. Repeatability | |
| (1) P2 1012 Ω cm>1 | ≯25%; |
| (2) P2 1012 Ω cm 1 | ≯15% |
| 4. Heating and temperature controlling range | 300 W; |
| 5. Temperature controlling range | ambient temperature~100℃; |
| 6. Temperature controlling accuracy | 0.5 ℃; |
| 7. Measurement electrode cup | 4 pieces (3 pieces are for high temperature, and the other 1 is for low temperature); |
Changji Geological Instrument Company is an ISO9001: 2000 certified resistivity tester manufacturer in China. Due to our reliable quality and inexpensive prices, we have established long-term relationships with customers around the world. Located in Shanghai, we are surrounded by sea ports, airports and highways, which greatly reduces our production costs and saves transportation fees for our customers. Our major products include various kinds of petroleum testing equipment, highway and bitumen instruments, laboratory instruments, and geological instruments.
Please feel free to contact us for more information.






