| Country of Origin | United Kingdom |
|---|---|
| Brand | Michell |
| Unit Type | Unit |
| MPN | Series 3000 |
| Display | Digital |
Check the listing for details. Michell Series 3000 Dewpoint Hygrometer with sensor. Condition: Used, Made in United Kingdom. Listed at 599.00 USD. Principles of operation:-The sensor consists of a mirror, fixed onto a Peltier cooling module. An LED light source is directed at the mirror, and the light is reflected back to a detector. The light detector acts in conjunction with the Peltier pump, cooling the mirror until dew or frost begins to form on it.