Measures and records the relative humidity. Registration is done on recording charts which are stretched onto a hand wound clock drum acc. to DIN 8300 and DIN 58658 or a quartz clock work.
Delivery is effected with a set of recording charts (100 sheets) and recording pens.

Recording time    Clock work
1/ 7 days
Spring wound drive
14/31 days
Spring wound drive
1 /7/ 31 days
Quartz Measuring element H (hair), accuracy  ±2%, measuring range 10…100 % rel. hum. Measuring element K (synthetic fibre), accuracy ±3 %, measuring range:
0…100 % rel. hum.
.000  Not lockable
.900 lockable