The 44421A is a Data Logger from Agilent HP. Data loggers, or data recorders, collect information over time for a variety of purposes. A data logger uses internal memory and sensors to gather and document information on a 24-hour basis. Receive an accurate and comprehensive picture of the environmental conditions you’re monitoring as the device logs this information around the clock. Use data logging to measure temperature, humidity, wind speed, solar radiation, soil moisture levels, road traffic, tank levels, and a number of other elements.
- 20 Channel Relay Multiplexer Assembly
- Reed relay multiplex card to be used in the Agilent HP 3497A Data Acquisition System
- Each card switches 20 channels and each channel has a HI, Lo, and Guard line
- The low thermal offset of the relays make it suitable for measuring the outputs of strain gages and other transducers
The HP 44421A assembly uses reed relays to multiplex signals to the DVM or other instruments. Each assembly switches 20 channels, each channel consists of Hi, Lo, and Guard lines. Two channels may be closed per assembly and relays may be closed in a random sequence or incremented between programmable limits. The low thermal offset of the relays make it suitable for measuring the outputs of strain gage and other transducers. Each channel can be configured with a filter or current shunt for additional flexibility.