FW3
FW3
OrderableType E Fine-Wire Thermocouple with 0.003 in. Diameter
Pricing
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Configuration
- 1 in FW/ENCFW3-1Part Number: 44490
- 2 in FW/ENCFW3-2Part Number: 44491
- 3 in FW/ENCFW3-3Part Number: 44492
- 4 in FW/ENCFW3-4Part Number: 44493
Select a configuration to add to your quote
- Model:
- FW3
- Item Number:
- FW3
- Warranty:
- No Warranty
Overview
The FW3 is a Type E thermocouple with a 0.003 in. diameter. It measures atmospheric temperature gradients or fluctuations with research-grade accuracy. The FW3 is compatible with most Campbell Scientific data loggers, and it is often used in eddy-covariance systems.
Key Advantages
High accuracy for temperature-gradient and eddy-covariance applications
Technical Description
The FW3'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 data logger 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.
Benefits
- High frequency response suitable for eddy-covariance applications
- Extremely small diameter virtually eliminates solar loading
- Well-suited for temperature gradient measurements
Specifications
- Type
- Chromel-Constantan
- Typical Output
- 60 μV/°C
- Accuracy
- Refer to the Thermocouple Measurement section in the data logger manual.
- Diameter
- 0.0762 mm
(0.003 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)
Common Accessories
(2)FWTM
Fine-Wire Thermocouple Mount
The FWTM is a mounting kit that can be used with the FW3 thermocouple. It has options to mount the thermocouple horizontally or vertically.
OrderableFWC
Connector Cable for Fine-Wire Thermocouples
One FWC Connector Cable is required for each FW3 ordered. A 20-ft lead length is recommended for most applications.
Orderable
Replacement Parts
(2)FW/ENC
Fine-Wire Thermocouple Carrying Case (hold four thermocouples)
The FW/ENC Carrying Case holds four probes and is required to ship the thermocouples.
Orderable
Probes returned to Campbell Scientific for repair without this case will be shipped to the customer in a new case and the account charged accordingly.10956
24 AWG, Twisted Pair Shielded Type E Chromega/Constantan Thermocouple Wire
This orders raw Type E thermocouple wire; the price listed is the price per foot.
Orderable
Compatibility
Data Logger Considerations
The thermocouple connects to the data logger via the FWC cable. One differential analog input per sensor is required.
Reference Temperature Measurement
A reference temperature measurement is required. Options for measuring the reference temperature include:
- Thermistor built into the CR800, CR850, CR1000, CR3000, or CR5000 wiring panel
- PRT built into the wiring panel of the CR9050 or
- CR9051E input module for the CR9000X Measurement and Control Datalogger
- PRT built into the wiring panel of the CR723T input card for the CR7 Measurement and Control Datalogger
- CR10XTCR thermistor that connects to the CR10X wiring panel
Carrying Case
The FW/ENC Carrying Case is required to ship our FW3 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.
