| Temperature (°C) |
Ultrasound velocity (± 1 m/s) |
| |
Light oil |
Heavy oil |
Medium oil (50:50 mixture) |
| 20 |
1420 |
1496 |
1361 |
| 25 |
1403 |
1480 |
1342 |
| 30 |
1385 |
1465 |
1323 |
| 35 |
1368 |
1449 |
1308 |
| 40 |
1349 |
1432 |
1292 |
| 45 |
1334 |
1419 |
1278 |
| 50 |
1316 |
1404 |
1260 |
| 55 |
1301 |
1387 |
1243 |
| 60 |
1288 |
1371 |
1223 |
| 65 |
1267 |
1354 |
1210 |
| 70 |
1257 |
1337 |
1193 |
|
