The FW1 is a Type E thermocouple with a 0.001 in. diameter. It measures atmospheric temperature gradients or fluctuations with research-grade accuracy. The FW1 is compatible with most Campbell Scientific dataloggers, and it is often used in eddy-covariance systems.Read More
The FW/ENC Carrying Case is required to ship our FW1 thermocouples. It holds up to four thermocouples.
The FW1's small mass eliminates the need for a solar radiation shield. It consists of a type E thermocouple with a connector. The connector attaches the thermocouple to a datalogger via the FWC-L cable.
Type E thermocouples are comprised of a chromel wire and a constantan wire joined at a measurement junction. A voltage potential is generated when the measurement end of the thermocouple is at a different temperature than the reference end of the thermocouple. The magnitude of the voltage potential is related to the temperature difference. Therefore, temperature can be determined by measuring the differences in potential created at the junction of the two wires.
A reference temperature measurement is required for thermocouple measurements. The temperature sensor built into many of our dataloggers' wiring panel typically provides this measurement.
|Typical Output||60 μV/°C|
|Accuracy||Refer to the Thermocouple Measurement section in the datalogger manual.|
|Diameter||0.0254 mm (0.001 in.)|
|Length||36.8 cm (14.5 in.)|
|Plug Dimensions||1.8 x 3.3 x 1.0 cm (0.7 x 1.3 x 0.4 in.)|
|Weight||45 g (2 oz)|
The thermocouple connects to the datalogger via the FWC cable. One differential analog input per sensor is required.
|CR200(X) Series||CR800/CR850||CR1000||CR3000||CR9000X||CR6 Series|
A reference temperature measurement is required. Options for measuring the reference temperature include:
The FW/ENC Carrying Case is required to ship our FW1 thermocouples. It holds up to four thermocouples. Thermocouples returned to Campbell Scientific for repair without this case will be shipped to the customer in a new case and the account charged accordingly.
Number of FAQs related to FW1: 2
Most Campbell Scientific dataloggers can measure a thermocouple without any external signal conditioning. Therefore, a dedicated module is not required.
No. The fine-wire thermocouples were designed to measure ambient air temperature.