| For adjustment points and requirements of the GMP251 CO2 probe, see GMP251 User Guide (M211799EN). |
| Adjustment | HMP110 | HMP110T | HMP115 | HMP115T | TMP115 |
|---|---|---|---|---|---|
| 1-point RH adjustment | |||||
| 2-point RH adjustment | |||||
| 1-point T adjustment | |||||
| 2-point T adjustment |
2-point RH and T adjustments have the following requirements:
- When adjusting RH, the first point requires a < 50 %RH humidity reference, and the second point must be > 50 %RH. The difference between the references must be at least 30 %RH.
- When adjusting T, the difference between the 2 references must be at least 30 °C (54 °F).
|
When comparison against a calibrated reference indicates that adjustment of humidity measurement is necessary, Vaisala recommends adjusting in 2 points, 11 %RH and 75 %RH. These humidities can be produced using LiCl and NaCl salt chambers of the Vaisala HMK15 Humidity Calibrator. Adjustment of temperature measurement is typically not necessary. |