Related Manuals for Omega OM-WEB-TC
Summary of Contents for Omega OM-WEB-TC
- Page 1 User’ s Guide Extended Warranty Program Shop online at omega.com e-mail: info@omega.com For latest product manuals: omegamanual.info OM-WEB-TC and OM-WEB-TEMP Web-Enabled Temperature Measurement Modules...
- Page 2 For Other Locations Visit omega.com/worldwide The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves the right to alter specifications without notice. WARNING: These products are not designed for use in, and should not be used for, human applications.
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Page 3: Table Of Contents
Table of Contents Preface About this User’s Guide ........................6 What you will learn from this user’s guide ......................6 Conventions in this user's guide ......................... 6 Where to find more information ......................... 6 Chapter 1 Introducing the OM-WEB Series ......................7 Web interface .............................. - Page 4 OM-WEB Series User's Guide Two-wire configuration ..............................20 Three-wire configuration ..............................21 Four-wire configuration ..............................21 Semiconductor sensor measurements (OM-WEB-TEMP only) ............... 22 Wiring configuration ................................22 Digital I/O connections ............................. 23 Configuring the DIO channels to generate alarms ......................23 Chapter 4 Functional Details ..........................24 Thermocouple measurements ...........................
- Page 5 OM-WEB Series User's Guide Ethernet compliance ................................38 Ethernet connection .................................38 Network factory default settings ............................38 Network protocols ................................39 Network security ................................39 LED displays and the factory reset button ......................39 Current excitation outputs (OM-WEB-TEMP) ....................40 Environmental ..............................40 Mechanical ............................... 40 Screw terminal connector type and pinout .......................
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Page 6: Preface
Preface About this User’s Guide What you will learn from this user’s guide This user's guide describes the Omega Engineering OM-WEB Series data acquisition devices and lists device specifications. Conventions in this user's guide For more information about … Text presented in a box signifies additional information and helpful hints related to the subject matter you are reading. -
Page 7: Introducing The Om-Web Series
Chapter 1 Introducing the OM-WEB Series The OM-WEB Series includes the following devices: OM-WEB-TC OM-WEB-TEMP OM-WEB Series devices are temperature measurement devices with built-in web servers. You can connect the device to an Ethernet port or hub, start up your browser, and view current data. -
Page 8: Alarms
OM-WEB Series User's Guide Introducing the OM-WEB Series Supported sensor categories Sensor category OM-WEB-TC OM-WEB-TEMP Thermocouple (J, K, R, S, T, N, E, and B) Resistance temperature detectors (RTDs) (2, 3, or 4-wire) Thermistors (2, 3, or 4-wire) Semiconductor temperature sensors ... -
Page 9: Functional Block Diagram
OM-WEB Series User's Guide Introducing the OM-WEB Series Functional block diagram OM-WEB Series device functions are illustrated in the block diagram shown here. Figure 1. OM-WEB Series functional block diagram Software features For information on the features of InstaCal and the other software included with your OM-WEB Series hardware, refer to the OMB-DAQ-2400, OM-USB, OM-WEB, and OM-WLS Series Data Acquisition Software User's Guide that shipped with the device. -
Page 10: Installing A Om-Web Series Device
Before removing the device from its packaging, ground yourself using a wrist strap or by simply touching the computer chassis or other grounded object to eliminate any stored static charge. If any components are missing or damaged, notify Omega Engineering immediately by phone, fax, or e-mail. ... -
Page 11: Connecting Om-Web Series Hardware
Default login name and password The default login name for the OM-WEB-TC is "webtc", and "webtemp" for the OM-WEB-TEMP. The default password is "omega" for each device. If the OM-WEB Series device is not recognized by the network... -
Page 12: Connecting To A Lan For Communication Across Networks
At the client LAN, open your web browser, and enter the "public" IP address recorded in step 2 above. Note : To access the OM-WEB-TEMP, OM-WEB-TC by name, a DNS entry must be assigned. Measurements page opens. Use this page to view current measurement data. A log in name and password are required to change configuration settings. - Page 13 IP address: Enter 192.168.0.102. Note that the last three digits of this number can be any number between 11 and 254, inclusive, but must be different from the IP address assigned to the device. The default IP address set for the OM-WEB-TEMP, OM-WEB-TC is 192.168.0.101. Subnet mask: Enter 255.255.255.0.
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Page 14: Using The Web Interface
Configurable options are disabled until you log in with the user name and password set for the device. Only one user can be logged in at a time. The default login name for the OM-WEB-TC is "webtc", and "webtemp" for the OM-WEB-TEMP. -
Page 15: Setting The Network Parameters
IP address 192.168.0.101 Subnet mask 255.255.255.000 Gateway 192.168.0.1 Server Enabled User name OM-WEB-TC: webtc OM-WEB-TEMP: webtemp Password omega 00:12:71:Cx:xx:xx, where xxxxx is the device’s serial number (read-only) MAC address The following default network parameters are programmable with InstaCal: Text that identifies the WEB Series device. This value is optional, and is not set by default. Up to 48 Identifier alpha-numeric characters can be entered. -
Page 16: Calibrating Om-Web Series Hardware
OM-WEB Series User's Guide Installing a OM-WEB Series Device Calibrating OM-WEB Series hardware OM-WEB Series hardware is calibrated to the selected device settings each time the Submit or Calibrate button is pressed on a web interface configuration page, or the OK button is pressed on the InstaCal board configuration page. -
Page 17: Signal I/O Connections
24-bit A/D converter, and can monitor one sensor category. The OM-WEB-TC and OM-WEB-TEMP support thermocouple types J, K, R, S, T, N, E, and B. You can connect two different thermocouple types to a channel pair. -
Page 18: Current Excitation Output (Om-Web-Temp)
IC+ and IC– are the current excitation source for channel 4 and channel 5 ID+ and ID– are the current excitation source for channel 6 and channel 7 These terminals are labeled RSVD (reserved for future use) on the OM-WEB-TC. Four-wire, two sensor common (OM-WEB-TEMP) Terminals... -
Page 19: Thermocouple Connections
OM-WEB Series User's Guide Signal I/O Connections Thermocouple connections A thermocouple consists of two dissimilar metals that are joined together at one end. When the junction of the metals is heated or cooled, a voltage is produced that correlates to temperature. OM-WEB Series hardware make fully differential thermocouple measurements without requiring ground- referencing resistors. -
Page 20: Two-Wire Configuration
OM-WEB Series User's Guide Signal I/O Connections Use InstaCal or the web interface to select the sensor type and the wiring configuration. Once the resistance value is calculated, the value is linearized in order to convert it to a temperature value. A 32-bit floating point value in either temperature or resistance is returned by software. -
Page 21: Three-Wire Configuration
OM-WEB Series User's Guide Signal I/O Connections When you select a two-wire, two sensor configuration, connections to C#H (first sensor) and C#H/C#L (second sensor) are made internally. When configured for two-wire mode, both sensors must be connected to obtain proper measurements. Three-wire configuration A three-wire configuration compensates for lead-wire resistance by using a single voltage sense connection. -
Page 22: Semiconductor Sensor Measurements (Om-Web-Temp Only)
OM-WEB Series User's Guide Signal I/O Connections Figure 7. Four-wire, single RTD or thermistor sensor measurement configuration Four-wire, two-sensor A four-wire, two-sensor measurement configuration is shown in Figure 8. Note : There are two high/low channel pairs on each terminal. The # indicates the channel number. Do not make connections to the pin labeled "NC". -
Page 23: Digital I/O Connections
For general information regarding digital signal connections and digital I/O techniques, refer to the OMB-DAQ- 2400, OM-USB, OM-WEB, and OM-WLS Series General Guide to Signal Connections (available on our web site at www.omega.com/manuals/manualpdf/M4830.pdf). Configuring the DIO channels to generate alarms The OM-WEB Series hardware features eight independent temperature alarms. -
Page 24: Chapter 4 Functional Details
Chapter 4 Functional Details Thermocouple measurements OM-WEB Series hardware level-shifts the thermocouple’s output voltage into the A/D’s common mode input range by applying +2.5 V to the thermocouple’s low side at the C#L input. Always connect thermocouple sensors in a floating fashion. Do not attempt to connect the thermocouple low side C#L to GND or to a ground referencing resistor. -
Page 25: Data Linearization
100 meters. Data can transmit up to 100 meters at speeds of up to 100 Mbps using only one crossover Ethernet cable connected to your computer. External power connector Use the supplied external power supply (Omega p/n OMB-DAQ-2416-ADAP) to power OM-WEB Series hardware. -
Page 26: Status Leds
Your network traffic has reached its maximum limit, and no communication is possible. Check with your Network Administrator. The Ethernet cable is not connected to the OM-WEB-TEMP, OM-WEB-TC. The Ethernet cable is not connected to the network. ... -
Page 27: Ethernet Troubleshooting
LED is off, verify that the Ethernet cable is the correct type, that it is not LINK/ACTIVITY damaged , and that it is connected correctly between the OM-WEB-TEMP, OM-WEB-TC and a known functional server/hub/switch (or connected to your computer if you are connected directly). -
Page 28: Check The Network Settings On The Computer
IP address for both your computer and the device. Perform the procedure listed in Check the network settings on the computer TCP/IP settings below. The OM-WEB Series device is not receiving — contact Omega Engineering technical support. Refer Getting help on page 30 for contact information. Check the network settings on the computer... -
Page 29: Verify The Network Path To The Om-Web Series Device
IP address. If the RESET button does not restore the network settings, the microcontroller on the OM-WEB-TEMP, OM- WEB-TC may not be working. Contact Omega Engineering technical support. Refer to Getting help on page 30 for contact information. -
Page 30: Verify The Network Path To A Remote Om-Web Series Device
If the network configuration and settings are properly set but you still cannot communicate with the OM-WEB Series device, the problem may be with the device. For hardware related issues, contact Omega Engineering technical support by phone, fax, or email: ... -
Page 31: Chapter 6 Specifications
Chapter 6 Specifications All specifications are subject to change without notice. Typical for 25 °C unless otherwise specified. Specifications in italic text are guaranteed by design. Analog input Table 1. Generic analog input specifications Parameter Condition Specification A/D converters Four dual 24-bit, Sigma-Delta type Number of channels 8 differential Input isolation... -
Page 32: Channel Configurations
OM-WEB Series User's Guide Specifications Channel configurations Table 2. Channel configuration specifications Sensor Category Condition Max number of sensors (all channels configured alike) Disabled All temperature input channels are disconnected from screw See Note 2 terminals and internally connected to AGND. Thermocouple (Note 1) 8 differential channels Semiconductor (Note 1) -
Page 33: Accuracy
OM-WEB Series User's Guide Specifications Accuracy Thermocouple measurement accuracy Table 4. Thermocouple accuracy specifications, including CJC measurement error. All specifications are (±). Sensor Sensor Accuracy error (°C) max Accuracy error (°C) typ Tempco (°C/°C) Type temperature –210 °C 3.098 1.762 0.040 0 °C 1.282... -
Page 34: Semiconductor Sensor Measurement Accuracy
OM-WEB Series User's Guide Specifications Semiconductor sensor measurement accuracy Table 5. Semiconductor sensor accuracy specifications Sensor type Temperature range (°C) Maximum accuracy error –40 °C to 150 °C LM35, TMP35 or ±0.50 °C equivalent Error shown does not include errors of the sensor itself. These specifications are for one year while Note 6: operation of the OM-WEB-TEMP is between 15 °C and 35 °C. -
Page 35: Thermistor Measurement Accuracy
OM-WEB Series User's Guide Specifications Thermistor measurement accuracy Table 7. Thermistor measurement accuracy specifications Thermistor Sensor Accuracy error (°C) Accuracy error (°C) Tempco (°C/°C) temperature 2252 Ω –40 °C 0.001 0.0007 0.001 0 °C 0.021 0.008 0.001 50 °C 0.263 0.130 0.001 120 °C... -
Page 36: Throughput Rate
OM-WEB Series User's Guide Specifications Throughput rate Table 9. Throughput rate specifications Number of input Maximum throughput channels 2 S/s 2 S/s on each channel, 4 S/s total 2 S/s on each channel, 6 S/s total 2 S/s on each channel, 8 S/s total 2 S/s on each channel, 10 S/s total 2 S/s on each channel, 12 S/s total 2 S/s on each channel, 14 S/s total... -
Page 37: Temperature Alarms
External power input (Note 15) +5 VDC ± 5% (+5 VDC power supply provided) External power supply (included) Omega p/n OMB-DAQ-2416-ADAP +5 VDC, 10 W, 5% regulation Voltage supervisor limits 4.75 V > Vext or Vext > 5.25 V PWR LED = Off; (power fault) 4.75 V <... -
Page 38: Network
Table 17. Factory default specifications Parameter Conditions Factory default IP address 192.168.0.101 Factory default subnet mask 255.255.255.0 Factory default Gateway 192.168.0.1 Factory default DHCP setting Enabled Factory default user name OM-WEB-TC: webtc OM-WEB-TEMP: webtemp Factory default password omega Web Server Enabled... - Page 39 TCP downloading protocol TCP port 54267 HTTP 1.0 alternate port TCP port 49152-65535 (not including 54267) Network name OM-WEB-TC: OMWEBTC_xxxxx OM-WEB-TEMP: OMWEBTEMP_xxxxx where xxxxx is the device serial number Network name publication via NBNS (responds to b-node broadcasts, therefore only available on the local subnet)
- Page 40 OM-WEB Series User's Guide Specifications Current excitation outputs (OM-WEB-TEMP) Table 21. Current excitation output specifications Parameter Conditions Specification Configuration 4 dedicated pairs: ±IA: CH0/CH1 ±IB : CH2/CH3 ±IC: CH4/CH5 ±ID: CH6/CH7 Current excitation output ranges Thermistor 10 µA typ 210 µA typ Tolerance ±5% typ Drift...
- Page 41 OM-WEB Series User's Guide Specifications Table 25. Screw terminal pinout Signal Name Pin Description Signal Name Pin Description CH6/CH7 current excitation IA+ (Note 20) CH0/CH1 current excitation source ID– (Note 20) return No connect AGND Analog ground CH0 sensor input (+) CH7 sensor input (–) CH0 sensor input (–) CH7 sensor input (+)
- Page 42 Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification.
- Page 43 Where Do I Find Everything I Need for Process Measurement and Control? OMEGA…Of Course! Shop online at omega.com TEMPERATURE Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies Wire: Thermocouple, RTD & Thermistor Calibrators & Ice Point References Recorders, Controllers & Process Monitors...
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