Symptom | Possible Cause | Method of Correction |
Flow indication is not | Attempting to measure | Use higher flow rates |
linear and output too | flows below the specified |
|
low at lower flows | minimum for the unit |
|
| Moisture or liquid in sensor | Remove moisture and allow |
|
| sensor to dry out |
| Mechanical sensor assembly | Unit must be returned for |
| damaged | repair (see Section J) |
|
|
|
Flow reading accuracy | Gas has a specific gravity | Calculate the flow reading |
is outside the | other than Air at 20°C | error / offset as explained in |
specification |
| section C6 |
| Moisture in sensor | Allow sensor to dry out. |
|
| Ensure gas is dry. |
| Mechanical sensor assembly | Unit must be returned for |
| damaged | repair (see Section J) |
| Pressure drop issue | Correct for the pressure |
|
| drop ( ΔP ) |
Flow indication is fixed | The maximum rated flow for | Reduce the flow |
at one value | the unit is being exceeded. |
|
| Output circuits may be | Unit must be returned for |
| damaged | repair (see Section J) |
|
|
|
pg. 27 of 29