Portable thermo-hygrometers are available with or without the ability to display the dew point.
Electrodes & Probes
The following category is for the replacement probes used with Hanna portable thermo-hygrometers.
A transmitter with 4-20 mA signals for relative humidity and temperature is available. This transmitter is for on-site, continuous monitoring of relative humidity and temperature in critical or controlled environments. The analog output can be sent to chart recorders or other recording devices.