Vaisala HMM213 User Manual
Page 16
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USER'S GUIDE____________________________________________________________________
The HMM213 modules are connected to process control systems with
screw terminals. These versatile modules incorporate the
HUMICAP
®
180R humidity sensor, which uses an operating principle
based on changes in the capacitance of a thin polymer film as it absorbs
water molecules. The HMM213 modules measure temperature with the
reliable Pt 100 sensor. If the module is ordered with chemical purge
option, it incorporates a composite sensor.
16 ____________________________________________________________________ U339EN-1.3
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