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Measurement Computing Corporation products are not designed with the components required, and are not subject to the testing required to ensure a level of reliability suitable for the treatment and diagnosis of people. HM WebDAQ 316...
Conventions in this user's guide ......................... 5 Where to find more information ......................... 5 Hazardous voltages ............................. 5 Hazardous locations ................................5 Chapter 1 Introducing the WebDAQ 316 ......................6 Powered by Raspberry Pi ® ..........................6 Integrated operating system and web service ..................... 6 Ethernet interface ..............................
Caution! Ensure that hazardous voltage wiring is performed only by qualified personnel adhering to local electrical standards. Do not mix hazardous voltage circuits and human-accessible circuits on the same device. Make sure that devices and circuits connected to the WebDAQ 316 are properly insulated from human contact. Hazardous locations...
WebDAQ Series devices are designed with an integrated operating system and web interface. You communicate with the device over a network connection using the web interface opened in a web browser. Mobile support – access the WebDAQ 316 from any device with a web browser, such as a phone or tablet ...
Introducing the WebDAQ 316 Functional block diagram Device functions are illustrated in the block diagram shown here. Figure 1. WebDAQ 316 functional block diagram Unpacking As with any electronic device, you should take care while handling to avoid damage from static electricity.
Connecting to a network with DHCP enabled Connect one end of the Ethernet cable to the connector on the WebDAQ 316 rear panel, and connect the other end to a 10Base-T or 100Base-TX compatible Ethernet port, hub, or switch.
Incorrect settings can significantly disrupt a network. In the following procedure, the WebDAQ 316 is installed on the host LAN, the computer is installed on the client LAN, and it is assumed that you have successfully connected the device to a local network.
WebDAQ 316 User's Guide Setting up the WebDAQ 316 Configure the firewall/router to forward an unused port to port 80 on the WebDAQ 316 at the IP address configured for the device. Note the static IP address assigned to the router – this is referred to as the WAN address.
Chapter 3 Functional Details Front panel components Front panel components are shown in Figure 3. Detachable screw terminal Detachable spring terminal Figure 3. Front panel Screw terminal Spring terminal Screw terminal Connect up to four digital I/O lines ( ) to the detachable screw terminal.
The WebDAQ 316 supports type J, K, S, R, B, E, T, N thermocouples (TC), and provides overvoltage protection between any two inputs. A typical thermocouple connection is shown in Figure 6.
Use the web interface to safely unmount removable media, when present. When removable media is plugged into the WebDAQ 316, the operating system opens it for writing. To safely remove the media, you must unmount it first.
CONFIG RESET When pressed, the default settings are written to the device and the WebDAQ 316 is rebooted. Refer to page 10 for a list of the default settings that are restored.
The two high-speed USB ports can be used for connections to a mass storage device. When removable media is plugged into the WebDAQ 316, the operating system opens it for writing. Use the button (page 13) or web interface to unmount the USB device before removing.
WebDAQ 316 terminals for configurations with the terminals facing forward or upward. Auto zero channel The WebDAQ 316 has an internal auto zero channel which can be subtracted from each thermocouple reading to compensate for offset errors. Use the web interface to enable auto zero. WebDAQ 316 specifications assume that auto zero is enabled and applied to every sample.
If the update process is not successful, perform the following procedure to update the software image: Press the button to power down the WebDAQ 316. If the device is not responsive, press the Power Power button for 4 seconds to force the device to power off. Power down the device; unsaved changes may be lost.
Chapter 4 Specifications All specifications are subject to change without notice. Typical for 0 °C to 50 °C unless otherwise specified. Thermocouple input Table 1. Thermocouple input specifications Parameter Condition Specification 16 thermocouple channels Number of channels 1 internal auto zero channel 1 internal cold-junction compensation channel ADC resolution 24 bits...
Type R, S: <2.8 °C The following figures show the errors for each thermocouple type when connected to the WebDAQ 316 with auto zeroing performed. The figures display the maximum error over a full temperature range, and the typical error at room temperature. The figures account for gain errors, offset errors, differential and integral nonlinearity, quantization errors, noise errors, 50 Ω...
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WebDAQ 316 User's Guide Specifications Thermocouple Type K Errors Thermocouple Types T and E Errors Thermocouple Type B Errors...
WebDAQ 316 User's Guide Specifications Thermocouple Types R and S Errors Digital input/output Table 3. Digital input/output specifications Parameter Specification Digital type CMOS (Schmitt trigger) input / open drain output Number of I/O One port of 4 bits Configuration Each bit can be independently configured for input or output...
WebDAQ 316 User's Guide Specifications USB ports Table 8. USB specifications Parameter Specification Number of USB ports USB device type USB 2.0 (high-speed) Device compatibility USB 1.1, USB 2.0, USB 3.0 Note 3: The USB ports are provided for connection to a mass storage device.
WebDAQ 316 User's Guide Specifications Table 11. LED specifications – software update mode State Description All LEDs Solid yellow Software update is starting. 1. POWER Blinking yellow Software update is running. 2. STATUS Blinking green Update file is located; device is being updated.
Maximum altitude 2,000 m (6,562 ft) Pollution Degree Note 5: WebDAQ 316 operation is intended for indoor use only, but may be used outdoors if installed in a suitable enclosure. Safety voltages Connect only voltages that are within the limits specified in this table.
WebDAQ 316 User's Guide Specifications Screw terminal Table 19. Screw terminal pinout Terminal Terminal Label Label Digital ground DIO2 Digital bit 2 DIO0 Digital bit 0 DIO3 Digital bit 3 DIO1 Digital bit 1 Digital ground Spring terminal Table 20. Spring terminal pinout...
Test Report Number: EMI7018.17 Measurement Computing Corporation declares under sole responsibility that the product WebDAQ 316 is in conformity with the relevant Union Harmonization Legislation and complies with the essential requirements of the following applicable European Directives: Electromagnetic Compatibility (EMC) Directive 2014/30/EU...
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