Making Humidity Measurements Using 34972A and Data Logging

[@rogerio6497]

Aonde eu faço o download dos programas, para o Windows 10 pro, para o módulo de aquisição de temperaturas Agilent 34970A?

[@PetrolheadHQ]

How is the HTM2500LF connected to the 34972A multiplexer board.

[@KeysightHandsOn]

You can find the datasheet for the HTM2500LF online. The sensor has 5 wires (W1-W5), W5 is the shield. Connect the W1 brown to the power supply ground and the low of two channels CH1 & CH 2 on the 34901A mux. Connect W2 white to the +5 volt supply - this powers the humidity sensor. W3 yellow is the voltage proportional to humidity connect it to the high of CH1 on the 34901A. Last, connect W4 green to the high od CH 2 on the 34901A. The 34970A/72A can read the DC Voltage from channel 1 and the temperature on channel 2 .

[@PetrolheadHQ]

@@KeysightHandsOn There are 2 things I don't understand. Firstly, do we need an external power supply for the W2 white wire, if not and secondly, do we split the W1 brown wire so that it can connects to the the low of the three channels. The result being Ch1 L Brown, H Yellow, Ch2 L brown, H Green, Ch3 L brown and H white.

[@kapilnarwal]

How to connect AM2302 humidity sensor with three pins to 34901A using 34907a on a 34970A data logger...???

[@KeysightHandsOn]

Kapil Narwal The AM2302 creates serial data to report humidity. The 34970A does not support serial data. Other sensors produce a voltage which the 34970A can measure and then use its scaling feature to create a meaningful number. Personally, I would choose a different sensor as working with serial data is very time-consuming.

[@kapilnarwal]

What is the humidity sensor connected to 34901A card in the video...? can you suggest me some...??

[@KeysightHandsOn]

Kapil Narwal. The sensor in the video is HTM2500LF. The datasheet is online, you can see if it will meet your needs.

[@pauldervan8735]

How do we connect the HTM25000LF to the 34901A multiplexer board? Any help would be great.

[@KeysightHandsOn]

Paul Dervan You have one extra "0" in the model number. You can find the datasheet for the HTM2500LF online. The sensor has 5 wires (W1-W5), W5 is the shield. Connect the W1 brown to the power supply ground and the low of two channels CH1 & CH 2 on the 34901A mux. Connect W2 white to the +5 volt supply - this powers the humidity sensor. W3 yellow is the voltage proportional to humidity connect it to the high of CH1 on the 34901A. Last, connect W4 green to the high od CH 2 on the 34901A. The 34970A/72A can read the DC Voltage from channel 1 and the temperature on channel 2 .

[@pauldervan8735]

Thank you. That's very helpful.

[@ngoinhacuabenguyenthihien6316]

How do we connect the VAILASA HMP110 humidity sensor to the 34901A on a 34970A data logger...???

[@KeysightHandsOn]

The HMP has several models. You will need the analog model - I would look at the users guide on their site.