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USER GUIDE AND SPECIFICATIONS

NI WSN-3212

NI Wireless Sensor Network 4-Channel, 24-Bit Thermocouple Input Node

This user guide describes how to use the NI WSN-3212 thermocouple input node and lists its
specifications. Figure 1 shows the NI WSN system components.

Figure 1.

NI WSN System Components

The NI WSN-3212 is a four-channel, low-power, wireless thermocouple input device that works with
other NI WSN-32

nodes and gateways to form a wireless sensor network. The NI WSN system

consists of one or more NI WSN gateways, up to 36 NI WSN-32

nodes per gateway, and multiple PCs

or Programmable Automation Controllers (PACs) to receive and analyze the distributed sensor data. For
more information about PACs, visit

ni.com

NI WSN-32

Nodes

NI 9792 WSN Real-Time Gateway

NI WSN-9791 Ethernet Gateway

PC Running NI Software

Содержание WSN-3212

Страница 1: ...our channel low power wireless thermocouple input device that works with other NI WSN 32xx nodes and gateways to form a wireless sensor network The NI WSN system consists of one or more NI WSN gateways up to 36 NI WSN 32xx nodes per gateway and multiple PCs or Programmable Automation Controllers PACs to receive and analyze the distributed sensor data For more information about PACs visit ni com 1 ...

Страница 2: ...asurement results status information and to change the NI gateway and NI WSN 3212 device settings Figure 2 shows the NI WSN 3212 device block diagram Figure 2 NI WSN 3212 Device Block Diagram DIO Circuitry Analog Front End Flash Antenna 2 4 GHz 802 15 4 Radio Power Supply and Selector Low Power Microcontroller 18 Position Combicon Connector External Power Input Battery Input Internal ...

Страница 3: ...roducts Caution Do not operate the NI WSN product in a manner not specified in the user manual or operating instructions Product misuse can result in a hazard You can compromise the safety protection built into the product if the product is damaged in any way If the product is damaged return it to National Instruments for repair Caution Do not substitute parts or modify the NI WSN product Use the ...

Страница 4: ...gs listed in the Battery operating temperature range specification section Caution Do not disconnect the power supply wires and connectors from the de unless power has been switched off Caution Do not install or remove the device unless power has been switched off Caution Substitution of components may impair suitability for Class I Division 2 Caution For Zone 2 applications install the WSN system...

Страница 5: ...e sensitive to electromagnetic disturbances in the operational environment when test leads are attached or when connected to a test object Related Documentation Check ni com manuals for the most recent documentation For a complete list of documentation related to the NI WSN system refer to ni com info and enter rdwsnrd In addition to this guide the following documents may be useful when configurin...

Страница 6: ...N software from ni com support Using your Web browser go to ni com support and select Drivers and Updates Distributed I O Wireless Sensor Networks and then select the latest version of NI WSN software If you are using other software refer to the installation instructions that accompany your software What You Need to Get Started To set up and use NI LabVIEW with the NI WSN 3212 device you need the ...

Страница 7: ...212 on a panel or on a 35 mm DIN rail For kit accessory ordering information refer to the NI WSN product page accessory section at ni com Before using any of these mounting methods remove and save the serial number sticker located on the back of the NI WSN 3212 device for future use when configuring your device in software For the NI WSN 3212 device dimensions refer to Figure 3 Caution Your instal...

Страница 8: ...2 5 16 in thread forming screws that shipped with the DIN rail clip s Figure 5 shows how to fasten the DIN rail clip to the NI WSN 3212 Caution Do not use screws longer than 5 16 in to fasten the DIN rail clip to the NI WSN 3212 Figure 5 NI WSN 3212 Device DIN Rail Installation 2 Insert one edge of the DIN rail into the deeper opening of the DIN rail clip as shown in Figure 6 Figure 6 DIN Rail Cli...

Страница 9: ... NI WSN 3280 panel mount accessory to attach the NI WSN 3212 device to a panel or other flat surface The NI WSN 3281 panel mount accessory also includes a magnetic mount for attaching the NI WSN 3212 device to metallic surfaces Figure 7 shows the NI WSN 3212 panel mounting dimensions Figure 7 NI WSN 3212 Device Panel Mount Dimensions 78 74 mm 3 100 in 4 5 mm 5 Ø 177 in 44 02 mm 1 733 in 183 79 mm ...

Страница 10: ...SN 3280 Bolt or screw the panel mount accessory to a panel using five 8 32 or M4 screws NI WSN 3281 Attach the panel mount accessory using the integrated magnet 2 Slide the NI WSN 3212 device into the panel mount accessory as shown in Figure 8 1 Retention Knob 2 Retention Clip 3 Mounting Hole 4 Integrated Mounting Pin 5 Power and I O Strain Relief NATIONAL INSTRUMENTS 1 5 4 2 3 5 ...

Страница 11: ...n the panel mount knob to secure the NI WSN 3212 device as shown in Figure 9 Figure 9 Slide Retention Clip Down and Tighten Panel Mount Knob 4 Optional Secure any I O signal or power supply cabling to the panel mount accessory using a zip tie and the integrated strain relief slots NATIONAL INSTRUMENTS NATIONAL INSTRUMENTS ...

Страница 12: ...t accessories in high vibration environments Figure 10 Integrated Panel Mount Slots Caution Disconnect power before removing the device from the panel Setting Up the NI WSN 3212 Device The following sections discuss setting up the NI WSN 3212 for use Installing the Software You must be an Administrator to install NI software and devices on your computer Before connecting the hardware install the f...

Страница 13: ... 3212 Battery Compartment Caution Using the incorrect battery type causes an explosion risk Do not use rechargeable batteries Refer to the Battery Replacement and Disposal section for information about how to dispose of used batteries Note When using the NI WSN 3212 device on battery power you should configure the device as an end node so that it sleeps most of the time Running a device configured...

Страница 14: ...e retaining screws if necessary Figure 12 2 Position Mini Combicon Plug 2 Connect the external power supply positive lead to the V terminal 3 Connect the negative common lead to the C terminal 4 Reinstall the 2 position mini combicon plug in the device and tighten the retaining screws Caution You must use a UL Listed ITE power supply marked LPS with the NI WSN 3212 The power supply must also meet ...

Страница 15: ...ice Interface Figure 13 shows the NI WSN 3212 device interface Figure 13 NI WSN 3212 Node Interface 1 WSN Connect Button 2 Signal Strength Status LEDs 3 User LED 4 9 30 V External Power Input 5 Reset Button 6 Battery Slots Polarity Indicators 7 I O Connector 8 Antenna 8 2 3 6 7 5 4 1 ...

Страница 16: ...h LEDS 1 4 blink twice and then display the signal strength for three seconds LED 1 4 OFF Low Signal LED 1 ON LED 2 4 OFF Poor LED 1 2 ON LED 3 4 OFF Fair LED 1 3 ON LED 4 OFF Good LED 1 4 ON Excellent Status Indication Each LED 1 4 blinking in succession Searching for network LED 1 4 and 2 3 alternate blinking Updating firmware LED 1 4 continuously blinking Error Reboot device If problem persists...

Страница 17: ...connector are analog input The NI WSN 3212 channels share a common ground that is not isolated from other system parts Each channel has some impedance between the TC and COM terminal and between the TC and the COM terminal Each channel is filtered and then sampled by a 24 bit analog to digital converter ADC There is a current source between the TC and TC terminals If an open thermocouple is connec...

Страница 18: ...as shown in Figure 16 Figure 16 Connecting an Ungrounded Shielded Thermocouple Probe If the shield connects to earth ground leave the shield disconnected from the NI WSN 3212 Caution Connecting a non isolated earth grounded thermocouple causes corrupted temperature measurements Determining Temperature Measurement Accuracy and Minimizing Errors Temperature measurement errors depend in part on the t...

Страница 19: ...nals to a minimum Refer to the Minimizing Thermal Gradients section for more information Figure 17 Type B Errors Figure 18 Type J and N Errors Max 40 to 70 C Typ 40 to 70 C Measured Temperature C Measurement Error C 0 4 6 2 0 400 200 600 800 1000 1200 1600 1800 1400 Max 40 to 70 C Typ 40 to 70 C Measured Temperature C Measurement Error C 0 1 4 5 3 2 200 100 50 250 400 550 700 850 1000 1150 1300 ...

Страница 20: ...igure 20 Type R and S Errors Max 40 to 70 C Typ 40 to 70 C Measured Temperature C Measurement Error C 0 1 4 5 3 2 200 0 200 400 600 800 1000 1200 1400 Max 40 to 70 C Typ 40 to 70 C Measured Temperature C Measurement Error C 0 4 6 2 200 200 0 400 600 800 1000 1600 1800 1200 1400 ...

Страница 21: ... in the relative accuracy between channels If the system is mounted as recommended in the WSN device user guides the NI WSN 3212 accuracy specifications include the errors caused by the gradient across the device terminals Minimizing Thermal Gradients To minimize these errors follow these guidelines Use small gauge thermocouple wire Smaller wire transfers less heat to or from the measuring junctio...

Страница 22: ...to ensure compatibility The Drive High Only and the Drive High and Low modes require an external power supply connected to the DIO PWR terminal The following sections discuss how to configure the NI WSN 3212 device for different types of input and output and how to connect external devices to the NI WSN 3212 DIO terminals Connecting Sourcing Digital Outputs You must connect an external power suppl...

Страница 23: ...t require high side drive or a sourcing output Figure 23 Connecting a Device to the NI WSN 3212 in Drive High Only Mode Drive High and Low Mode In Drive High and Low mode the DIO x terminal is driven to the voltage supplied to DIO PWR when you turn on the channel and is driven to D GND when you turn off the channel Writing a digital value of 1 turns on the channel and 0 turns off the channel Figur...

Страница 24: ... 25 Connecting a Device to the NI WSN 3212 in Drive Low Only Mode Connecting Digital Inputs Tristate Mode Use this mode to configure the channel as digital input or for contact to ground sensing as shown in Figure 26 In Tristate mode when DIO x terminal is read a weak pull up resistor to internal 3 3 V is enabled for about 1 ms Figure 26 Example of Using the NI WSN 3212 in Tristate Mode DIO x D GN...

Страница 25: ...t Condition Follow these recommendations to prevent an overcurrent condition Do not connect DIO PWR to ground Do not ground unused terminals Do not exceed the output current rating of the channel Detecting a Overcurrent Condition If the node has detected an overcurrent condition it immediately stops driving the DIO line goes to a safe power down state and blinks a four blink error code The node mu...

Страница 26: ...r of channels 4 thermocouple input ADC resolution 24 bits Type of ADC Delta Sigma Voltage measurement range 73 mV Common mode range Channel to common 700 mV Common mode rejection ratio 0 to 60 Hz Channel to common 95 dB Temperature measurement ranges Thermocouple types J K R S T N and B Works over temperature ranges defined by NIST Thermocouple type E 270 to 950 C 1 0 2 3 4 5 6 7 9 8 10 11 12 13 1...

Страница 27: ... directional Modes configurable per channel Drive High Only Drive Low Only Drive High and Low and Tristate Power on output state High Impedance Tristate DIO power supply voltage range VDIO_PWR 5 to 30 V Digital Input Tristate Mode Input voltage range 0 to 30 V Input logical levels High level input voltage 1 7 to 30 V Low level input voltage 0 to 0 45 V Input current 0 to 30 V 160 µA to 400 µA maxi...

Страница 28: ...r sector 100 000 Wireless Characteristics Radio mode IEEE 802 15 4 RF data rate 250 kbit s Frequency band1 ISM 2 4 GHz 2400 MHz to 2483 5 MHz Channels2 11 24 TX power Americas 17 db 50 mW International 10 db 10 mW Range Americas Up to 300 m International Up to 150 m Modulation type DSSS O QPSK Receiver sensitivity 102 dBm Antenna Connector Female RP SMA connector VSWR MAX 2 0 Impedance 50 Ω Direct...

Страница 29: ...nths External Power Caution You must use a UL Listed ITE power supply marked LPS with the NI WSN 3212 The power supply must also meet any safety and compliance requirements for the country of use Voltage range 9 to 30 V Power input mating connector 2 position mini combicon Phoenix Contact part number 1714977 Power consumption End node mode 60 second sample interval 15 mW at 24 V 2 second sample in...

Страница 30: ...erformed on circuits not directly connected to the electrical distribution system referred to as MAINS voltage MAINS is a hazardous live electrical supply system that powers equipment This category is for measurements of voltages from specially protected secondary circuits Such voltage measurements include signal levels special equipment limited energy parts of equipment circuits powered by regula...

Страница 31: ...ice may experience reduced measurement accuracy or other temporary performance degradation when connected cables are routed in an environment with radiated or conducted radio frequency electromagnetic interference To limit radiated emissions and to ensure that this device functions within specifications in its operational electromagnetic environment take precautions when designing selecting and in...

Страница 32: ...s required for private usage outside buildings across public grounds over more than 300 m For registration and license please contact IBPT BIPT Voor privé gebruik buiten gebouw over publieke groud over afstand kleiner dan 300 m geen registratie bij BIPT IBPT nodig voor gebruik over afstand groter dan 300 m is wel registratie bij BIPT IBPT nodig Voor registratie of licentie kunt u contact opnemen m...

Страница 33: ...h das Gerät NI WSN 3212 in Übereinstimmung mit den grundlegenden Anforderungen und den übrigen einschlägigen Bestimmungen der Richtlinie 1999 5 EG befindet Eesti Estonian Käesolevaga kinnitabNational Instruments seadme NI WSN 3212 vastavust direktiivi 1999 5 EÜ põhinõuetele ja nimetatud direktiivist tulenevatele teistele asjakohastele sätetele English Hereby National Instruments declares that this...

Страница 34: ... Instruments jiddikjara li dan NI WSN 3212 jikkonforma mal htigijiet essenzjali u ma provvedimenti ohrajn relevanti li hemm fid Dirrettiva 1999 5 EC Magyar Hungarian Alulírott National Instruments nyilatkozom hogy a NI WSN 3212 megfelel a vonatkozó alapvetõ követelményeknek és az 1999 5 EC irányelv egyéb elõírásainak Polski Polish Niniejszym National Instruments oświadcza że NI WSN 3212 jest zgodn...

Страница 35: ...le all products must be sent to a WEEE recycling center For more information about WEEE recycling centers National Instruments WEEE initiatives and compliance with WEEE Directive 2002 96 EC on Waste Electrical and Electronic Equipment visit ni com environment weee Battery Replacement and Disposal Battery Directive After replacement recycle the old battery For information about the available collec...

Страница 36: ... North Mopac Expressway Austin Texas 78759 3504 National Instruments also has offices located around the world to help address your support needs For telephone support in the United States create your service request at ni com support and follow the calling instructions or dial 512 795 8248 For telephone support outside the United States contact your local branch office Australia 1800 300 800 Aust...

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