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TC-Link® OEM Wireless Thermocouple Node
Low cost, embeddable wireless thermocouple
node. Supports J,K,R,S,T,E,B,N thermocouple types.
Features and Benefits
- Quickly add wireless sensing and logging capabilities to existing thermocouples and probes
- Supports type J, K, N, R, S, T, E, B thermocouples with on-board cold junction compensation
- transmit data in real time or log data to 2MB, non-volatile flash memory
- Low cost per channel, with 6 thermocouples per node and simultaneous acquisition from multiple nodes
- Miniature board footprint (50.3 mm x 25.4 mm x 5.9 mm) easily embedded into custom product or application
- Self-calibrating 24 bit sigma-delta analog-to-digital converter
- Sample rates from 2 Hz to 1 sample every 17 minutes
- 2.4 GHz IEEE 802.15.4 spread spectrum radio with 70 m line-of-sight range (100 m with high gain antenna), license free worldwide
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Introduction
TC-Link®-OEM provides engineers with a low cost way to embed wireless temperature sensing in industrial
systems. It is a complete wireless thermocouple node, designed for easy integration with wireless sensor networks. The
node combines full thermocouple conditioning with award-winning MicroStrain® wireless systems.
TC-Link®-OEM features six standard thermocouple input connectors with an embedded cold junction temperature
sensor. On-board linearization algorithms are software programmable to support a wide range of thermocouple types
(J, K, N, R, S, T, E, B).
The node can simultaneously log data to internal memory, and transmit real-time data to a base station transceiver at
a pre-programmed rate. At the base station, data is displayed and logged for further analysis. Embedded software provides
the user-programmable wireless transmission rates, from two samples per second to one sample every seventeen minutes.
And since each node has a unique address, a single host transceiver can address hundreds of sensor nodes.
If using a battery, the processor is capable of conserving power by using a micropower sleep mode in between samples,
further enhancing the nodes long term data transmission capabilities.
The TC-Link®-OEM wireless thermocouple node features an open-architecture bidirectional communications
standard (IEEE 802.15.4 spread spectrum 2.4 GHz), which supports license-free operation worldwide. Starter kits
include TC-Link®-OEM wireless thermocouple nodes, base stations, and PC software for wireless node configuration, data
acquisition, and data display.
Also included is a complete Data Communicacation protocol manual to enable users to develop their own applications.
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Applications
Civil structures sensing: concrete maturation
Industrial sensing networks: machine thermal management
Food and transportation systems: refrigeration, freezer performance monitoring
Advanced manufacturing: plastics processing, composite cure monitoring
Assembly line testing with smart packaging
Cryogenic applications
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Thermocouple Inputs Supported |
Software selectable: Type J, K, R, S, T, E, B, N six input channel, one ambient CJC channel. |
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Standard Thermocouple Measurement Range |
J -210 to 760˚C
K -200 to 1372˚C
R -50 to 1664˚C
S -50 to 1664˚C
T -200 to 400˚C
E -200 to 1000˚C
B 250 to 1820˚C
N -200 to 1300˚C |
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Temperature Measurement Accuracy |
±0.1% full scale or ±0.2˚C whichever is greater (does not
include errors due to TC wire or transducer) |
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Temperature repeatability |
±0.1˚C (does not include errors due to TC wire or transducer) |
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Temperature resolution |
0.0625˚C |
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Cold Junction Compensation Range |
-20 to 85˚C |
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Thermocouple Connector |
Direct solder connection |
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Analog to Digital (A/D) Converter |
24 bit Delta-Sigma A/D |
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Sample Rate |
Programmable from 2 samples/second to 1 sample/17 minutes for datalogging or LDC
modes |
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Datalogging Mode |
Log up to 90,000 data sets (up to 630,000 data points) |
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Nodes Per Base Station |
Supports up to 100 nodes per base station |
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Sample rate stability |
Datalogging and LDC modes ±25 ppm |
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Radio Frequency (RF) Transceiver Carrier |
2.4 GHz, direct sequence spread spectrum, license free worldwide (2.405 to 2.480
GHz) - 16 channels, radiated power 0 dBm (1mW) |
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Range for Bi-directional RF Link |
Up to 70 m line of sight, up to 100 m with high gain antenna on base station |
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RF Data Packet Standard |
IEEE 802.15.4, open communication architecture |
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PC Communications |
115,200 baud over USB |
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Power Supply |
External power from 3.2 to 9 volts |
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Power Consumption |
2 samples per second - 0.8 mA
1 sample per second - 0.48 mA
3 samples per minute - 0.1 mA
1 sample per minute - 0.09 mA |
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Operating Temperature |
-40˚C to +85˚C (electronics only, cjc limited to -20 to 85˚C) |
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Maximum Acceleration Limit |
500 g standard (high g option available) |
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Dimensions |
50.3 mm x 25.4 mm x 5.9 mm (board only)
57.7 mm x 25.4 mm x 9.1 mm (board with right angle, external pin connector)
For dimensioned print go to Documentation tab |
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Weight |
30.1 grams (with enclosure and battery)
4.7 grams (circuit board assembly only) |
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Compatible Base Stations |
USB, RS-232, Analog, WSDA® |
Software |
TC-Link® Node Monitor Windows XP/Vista compatible
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General Documentation
Technical Notes
FAQ's
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