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User’s Guide

Summary of Contents for OM-WEB-TC

Page 1: ...mega com e mail info omega com For latest product manuals omegamanual info OM WEB TC and OM WEB TEMP Web Enabled Temperature Measurement Modules Extended Warranty Program SM Shop online at User sGuide...

Page 2: ...6 USA Canada only Tel 203 359 1660 Fax 203 359 7700 e mail info omega com For Other Locations Visit omega com worldwide omega com info omega com The information contained in this document is believed...

Page 3: ...r adapter 10 Connecting OM WEB Series hardware 11 Connecting to a LAN for communication within a network 11 Connecting to a LAN for communication across networks 12 Connecting OM WEB Series hardware d...

Page 4: ...t reset button 26 Chapter 5 Ethernet Troubleshooting 27 Check the OM WEB Series device status LEDs 27 Check the network settings on the computer 28 Check whether DHCP is enabled on the network server...

Page 5: ...net 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 M...

Page 6: ...ements present information to help you avoid injuring yourself and others damaging your hardware or losing your data bold text Bold text is used for the names of objects on a screen such as buttons te...

Page 7: ...ired to access the web interface Connect the device s 10Base T Ethernet port to a local or wide area network using the supplied Ethernet cable to a single computer through a hub using the supplied Eth...

Page 8: ...e eight independent temperature alarms Each alarm controls an associated digital I O channel as an alarm output The input to each alarm is one of the temperature input channels The output of each alar...

Page 9: ...n 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 har...

Page 10: ...y 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 com...

Page 11: ...a network LAN When connected all computers installed on the same network can access the web interface Note This procedure assumes the network server is equipped with DHCP dynamic host configuration pr...

Page 12: ...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 The Measurements page opens Use this page to view current measurement data A log in n...

Page 13: ...hernet port on the OM WEB Series device to your Ethernet hub using the supplied cable or to your computer s Ethernet port using a CAT 5 or higher crossover cable Note If you connect to an Ethernet hub...

Page 14: ...n these pages when you are logged in The device is calibrated to the selected settings each time the Submit or Calibrate button is pressed Help summarizes the options on each web page and includes ste...

Page 15: ...ing a static IP address Unless there is a reason to disable DHCP such as the network server is not DHCP enabled we recommend that you leave DHCP enabled IP The Internet Protocol IP address that is sto...

Page 16: ...guration page or the OK button is pressed on the InstaCal board configuration page Warm up period After you configure the hardware options allow the OM WEB Series device to warm up for 30 minutes befo...

Page 17: ...ch channel pair has a 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 t...

Page 18: ...h CJC sensor is dedicated to one of the four channel pairs and is located behind the associated channel s screw terminal These sensors measure the ambient temperature at the terminal block so that the...

Page 19: ...earth ground is maintained When thermocouples are attached to conductive surfaces the voltage differential between multiple thermocouples must remain within 1 4 V For best results use insulated or un...

Page 20: ...requires the fewest connections to the sensor With this method the two wires that provide the RTD sensor with its excitation current also measure the voltage across the sensor Since RTDs exhibit a lo...

Page 21: ...wire resistance Connections to C H for the first channel and C H C L of the second channel are made internally Three wire compensation For accurate three wire compensation the individual lead resista...

Page 22: ...compared to thermocouples and RTDs However semiconductor sensors can be accurate inexpensive and easy to interface with other electronics for display and control The OM WEB TEMP makes high resolution...

Page 23: ...ing If a digital bit is set up as an alarm that bit is configured for output and assumes the state defined by the alarm configuration Caution The GND pin is isolated from the AGND pins and from earth...

Page 24: ...After the CJC correction is performed on the measurement data an on board microcontroller automatically linearizes the thermocouple measurement data using National Institute of Standards and Technolog...

Page 25: ...MM LED top LINK ACTIVITY LED bottom 3 Power connector 6 Digital output voltage switch Figure 11 OM WEB Series components Screw terminals The screw terminals provide connections for sensors digital cha...

Page 26: ...Ethernet is idle Your network traffic has reached its maximum limit and no communication is possible Check with your Network Administrator Off The Ethernet cable is not connected to the OM WEB TEMP O...

Page 27: ...b or switch o If the LINK ACTIVITY LED is off verify that the Ethernet cable is the correct type that it is not damaged and that it is connected correctly between the OM WEB TEMP OM WEB TC and a known...

Page 28: ...all 0 s or if the first three sets octets of numbers in either the IP address or Subnet Mask do not match the device s network settings then the computer will be unable to communicate with the OM WEB...

Page 29: ...d the network settings may not be set correctly Press the RESET button on the OM WEB Series device to reset the network configuration settings to factory default values If DHCP is enabled an IP addres...

Page 30: ...hange the static address on one of your devices you may have obsolete information on PCs that have previously accessed your device You may be able to update this information simply by disconnecting th...

Page 31: ...0 080 V RTD OM WEB TEMP only 0 to 0 5V Thermistor OM WEB TEMP only 0 to 2 V Semiconductor sensor OM WEB TEMP only 0 to 2 5 V Absolute maximum input voltage C0x through C7x relative to AGND pins 9 19...

Page 32: ...uts paired together This channel pairing requires the analog input channel pairs be configured to monitor the same category of temperature sensor Mixing different sensor types of the same category suc...

Page 33: ...operating hours whichever comes first and for operation of the device between 15 C and 35 C after 30 minute warm up The tempco should be applied to the accuracy specifications for operation at an amb...

Page 34: ...36 0 001 600 C 0 318 0 150 0 001 Note 7 Error shown does not include errors of the sensor itself The sensor linearization is performed using a Callendar Van Dusen linearization algorithm These specs a...

Page 35: ...s for 2 wire thermistor connections Contact your sensor supplier for details on the actual sensor error limitations Total thermistor resistance on any given channel pair must not exceed 180 k Typical...

Page 36: ...utput voltages 5 V and 3 3 V Power on conditions Power on reset is Input mode except when bits are configured to operate as alarms Pull up pull down configuration All pins are connected to 47 k resist...

Page 37: ...des Disabled digital I O line may be used for normal operation Enabled active high output digital I O line goes high when alarm condition is met Enabled active low output digital I O line goes low whe...

Page 38: ...ecifications Parameter Conditions Device type IEEE 802 3 Ethernet 10Base T Device compatibility IEEE 802 3 2003 10 Mpbs Media Access Control Ethernet connection Table 16 Ethernet connection specificat...

Page 39: ...plementation IP address based session manager with user name password login for configuration and control transactions data is not secured Session timeout 5 minutes with no activity User name password...

Page 40: ...The excitation output currents should always be used in the dedicated configuration specified above Note 19 The current excitation outputs are automatically configured based on the sensor thermistor o...

Page 41: ...t excitation return 12 NC No connect see Note 20 38 AGND Analog ground 13 C2H CH2 sensor input 39 C5L CH5 sensor input 14 C2L CH2 sensor input 40 C5H CH5 sensor input 15 4W23 Note 20 CH2 CH3 4 wire 2...

Page 42: ...y 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 limite...

Page 43: ...ity Indicators Turbine Paddlewheel Systems Totalizers Batch Controllers pH CONDUCTIVITY pH Electrodes Testers Accessories Benchtop Laboratory Meters Controllers Calibrators Simulators Pumps Industrial...

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