Air Temperature/Humidity Probe

Transducer for temperature/humidity measurements - with Hypertac connector.

The HT52/05 accessory is a transducer probe for air temperature and humidity measurements, and can be used with instruments that will accept an input signal of 1mV AC, like for example network analyzers or high accuracy digital multimeters.

The probe can be switched between °C or °F and or Relative Humidity to make the relative measurements. It is important to note that the instrument has a Conney-Hypertac output for connection with principal HT Italia meters, GSC models and SIRIUS 89.

The Temperature/Humidity probes are self-contained relative, humidity and temperature to voltage converters. The probes are battery operated and designed to provide a direct humidity or temperature reading when connected to any high impedance digital multimeter (DMM) that accepts shrouded banana plugs and has 1 mVDC resolution and at least 200mVDC full scale readout capability.

The Temperature/Humidity probe provides a fast and convenient way to measure relative humidity and temperature in normal ambient conditions. It is ideal for spot surveying in any application where humidity or temperature measurements are important.

The output is 1mVDC per % relative humidity (%RH) and 1mVDC per degree of Celsius and 1mVDC per degree of Fahrenheit (selected with a switch).  

OPERATION Probe Description Temperature and Humidity probe.  Function Select Switch  Power ON LED indication.  Low Battery LED indicator.  Signal Output.

Temperature and Humidity measure

The probe has a switch with four position. When the probe is not used, the switch should be in position OFF to save the battery.

In position %RH the probe outputs a voltage signal proportional to the measured relative humidity (1 mV per %RH). In position °C the voltage output correspond to the measured temperature in Celsius (1 mV per °C).

In position °F, the Voltage output correspond to the measurement temperature in Fahrenheit (1 mV per °C).

MAINTENANCE

General information

1. This probe is a precision instrument. Whether in use or in storage, please do not exceed the specification require to avoid any possible damage or danger during use.
2. Do not place this probe in high temperature or expose to direct sunlight.
3. Be sure to turn the probe off after use. For long time storage, remove the battery to avoid leakage of battery liquid that would damage the interior parts.
4. Long-term exposure to certain chemicals and gases may affect the characteristics of the sensor and shorten its life.

Check the battery

1. When “LOW BATT” LED indicator light up, Replace battery.
2. The condition of the battery can be checked with a DMM. To do this set the power switch to position OFF, connect the probe to the DMM and set the DMM to voltage scale. If the battery voltage is less that 6.0 VDC, replace the battery.

Battery replacement
To change the battery open the cover of the probe;

1. Switch OFF the probe.
2. Remove the three screws at the bottom of the housing.
3. Remove the bottom cover, Note, avoid touching the components on the printed board.
4. Remove the battery from the battery fastener carefully.
5. Set the new battery into battery fastener, and return it to the battery case.
6. Replace the bottom cover and screws.

Cleaning
For cleaning the probe use a soft dry cloth. Never use a wet cloth, solvents or water, etc.