ELESA original design GN 541.3 fluid level sight glasses are practically indestructible. Therefore, they are designed to be relatively thin.
These fluid level sight glasses are fitted with a prismatic effect of a “cat’s eye“ to provide a clearer and unmistakable oil level reading irrespective of oil colour or viscosity. The advantage of this effect becomes obvious in cases such as underfilling or overfilling and monitoring the situation under unfavourable conditions.
GN 541.3 fluid level sight glasses can also be used in tanks which are pressurised. Test results are available.
Assembly instruction:
For mounting on walls of less than 4 mm thickness please use a GN 7430 mounting nuts.
RoHS compliant
| d1 Window glass | d2 Thread | d3 | l1 | l2 | s | Recommended tightening torque in Nm |
|---|---|---|---|---|---|---|
| 0.59 | G 1/2 | 1.10 | 0.41 | 0.35 | 0.94 | 8 ... 10 |
| 0.79 | G 3/4 | 1.38 | 0.41 | 0.41 | 1.26 | 10 ... 12 |
| 0.94 | G 1 | 1.67 | 0.43 | 0.53 | 1.50 | 10 ... 12 |
| 1.20 | G 11/4 | 2.05 | 0.75 | 0.63 | 1.61 | 12 ... 14 |
| Min | Max | Price |
|---|---|---|
| 1 | 99 | $4.66 |
| 100 | 249 | $4.27 |
| 250 | 499 | $3.88 |
| ≥ 500 | $3.49 |
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