Eight Channel Web-Enabled Thermocouple Input Module
OM-WEB-TC
⻬ Built-In Web Server
⻬ 8 Thermocouple
Input Channels
⻬ Supports Types J, K, T, E, N, R,
S, B Thermocouples
⻬ Built-In Cold Junction
Compensation and Open
Thermocouple Detection
⻬ 24-Bit Measurement System
⻬ 8 Digital I/O–User
Configurable for Alarms
⻬ Free Software Included
OM-WEB-TC, shown
smaller than actual size.
The OM-WEB-TC is a thermocouple
measurement device with built-in
web server. Simply connect the
device to an Ethernet port or hub
and view current data using a
standard web browser.
The OM-WEB-TC’s embedded web
interface provides access to current
data and configuration settings
using a standard web browser.
Browse to the device’s home page
by entering the URL that is printed
on the device into the browser.
View current thermocouple
measurements and channel data,
and configure hardware options
from the device’s home page. Only
one user can change configuration
options on the device at a time.
The web interface is built into the
device’s firmware, and does not
need to be installed on a computer.
No external software is required
other than a web browser and a
TCP/IP connection. 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 ethernet cable, or
directly to a computer using a
standard CAT-5 crossover cable.
The web browser used to access
the OM-WEB-TC’s web interface
must support JavaScript.
The OM-WEB-TC provides
8 thermocouple channels and
8 digital I/O channels. The included
external power supply (ac adaptor)
is used to provide power. On-board
LEDs display the status of
communications and external
power. All hardware configurable
options are selectable with the web
browser or the included Instacal
utility software. Network
configurable options are settable
using Instacal. When using Instacal,
if the login settings have been
changed from the default, a login
name and password are required to
change the configuration settings.
The OM-WEB-TC provides
8 differential thermocouple input
channels. A 24-bit analog-to-digital
(A/D) converter is provided for each
pair of analog inputs. Thermocouple
types J, K, T, E, N, R, S, B are
supported. The thermocouple type
is software programmable for each
channel. Four cold junction
compensation (CJC) sensors are
provided for thermocouple
measurements. Each CJC sensor is
dedicated to two thermocouple input
channels. An open thermocouple
detection feature lets you detect a
broken thermocouple. An on-board
microprocessor automatically
linearizes the measurement data.
To Order, Call or Shop Online at omega.com
The OM-WEB-TC features
8 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 alarm
is software configurable as an
active high or low. The user
configurable threshold conditions
activate each alarm. When an
alarm is activated, the associated
DIO channel is driven to the active
output state selected.
Eight digital I/O channels are
provided to communicate with
external devices and to generate
alarms. The digital bits are software
programmable for input or output.
The digital output voltage is switchselectable for 3.3V or 5V logic. A
screw terminal is provided for
pull-up or pull-down configuration.
The OM-WEB-TC web interface
displays current data read from the
device and does not log or store
historical data. Use the included
TracerDAQ software to log or
graphically trend your data.
The OM-WEB-TC module ships with
an impressive array of software,
including the new TracerDAQ
®
, a
full-featured, out-of-the-box data
logging, viewing, and analysis
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application; Universal Library™; ULx
for NI LabVIEW (comprehensive
library of VIs and example programs
compatible with 32- and 64-bit
LabVIEW v8.5 through 2011) and
InstaCal™ installation, calibration,
and test utility–powerful software
solutions for programmers and
nonprogrammers alike. These
modules operate under Microsoft
Windows XP/VISTA/7
(32-bit and 64-bit) operating systems.
The OM-WEB-TC is supplied with TracerDAQ software which is a
collection of four virtual instrument applications used to graphically
display and store input data and generate output signals:
• Strip Chart–log and graph values acquire from analog inputs,
digital inputs, temperature inputs and counter inputs.
• Oscilloscope–display values acquired from analog inputs
• Function generator–generate waveforms for analog outputs
• Rate Generator–generate waveforms for counter outputs
SWD-TRACERDAQ-PRO, $220, sold separately, is an enhanced
version of TracerDAQ. A comparison of some of the features included
in TracerDAQ vs TracerDAQ PRO are shown below.
Features Comparison
Strip Chart
Features TracerDAQ TracerDAQ Pro
Channel Types digital input, event counter digital input, event counter
Number of Channels 8 48
Number of Lanes 28
Maximum Samples per Channel 32,000 1 million
Alarm Conditions No Yes
Measurements Window No Yes
Enter Annotations No Yes
Software Triggering No Yes
Hardware Triggering No Yes
Time-of-Day Triggering No Yes
Linear Scaling No Yes
Analog input, temperature input, Analog input, temperature input,
Oscilloscope
Features TracerDAQ TracerDAQ Pro
Channel Type Analog input Analog input
Number of Channels 24
Measurements Window No Yes
Reference Channel No Yes
Math Channel No Yes
Rate Generator
Features TracerDAQ
TracerDAQ Pro
Channel Type Counter output Counter output
Number of Channels 1 20
Function Generator
Features TracerDAQ TracerDAQ Pro
Channel Type Analog output Analog output
Number of Channels 1 16
Waveform Types Sine Sine, square, triangle, flat, pulse, ramp, random, arbitrary
Duty Cycle No Yes
Phase No Yes
Gate Ratio No Yes
Rate Multiplier No Yes
Sweep (Linear and Exponential) No Yes
Specifications
ANALOG INPUTS
A/D Converter: Four dual 24-bit
sigma delta A/D converters
Input Isolation: 500 Vdc min
between field wiring and
USB interface
Number of Channels: 8 differential
thermocouple inputs
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To Order, Call or Shop Online at omega.com
Differential Input Voltage Range:
±0.080V
Absolute Maximum Input Voltage:
±25V (power on), ±40V (power off)
Throughput Rate: 2 samples/sec
max for all active channels
Input Impedance: 5 GΩ min
Input Leakage Current: 105 nA
max (with open thermocouple
detection enabled)
Normal Mode Rejection Ratio:
90 dB min
Common Mode Rejection Ratio:
100 dB min
Warm-Up Time: 30 minutes max
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Open Thermocouple Detection:
3 sec open detection time (max)
CJC Sensor Accuracy:
-0.75 to 0.5ºC max (15 to 35ºC);
-1.5 to 1.25ºC max (0 to 55ºC)
DIGITAL I/O
Number of Digital I/O Channels: 8
Type: CMOS
Configuration: Each DIO bit can be
independently configured for input
or output. Switch selectable output
voltages of 5V or 3.3V. Power on
reset is input mode unless bit is
configured for alarm
Pull-Up/Pull-Down
Configuration: All pins are
connected to 47 kΩ resistors
(user configurable for pull-up
mode to 5V or pull-down mode)
Digital I/O Transfer Rate
Network Factory
Default Settings
IP Address: 192.168.0.101
Subnet Mask: 255.255.255.0
Gateway: 192.168.0.1
DHCP Setting: Enabled
User Name: webtc
Password: omega
Web Server: Enabled
Network Protocols
Protocols Implemented:
IP, ARP, ICMP, DHCP, UDP,
TCP, NBNS, HTTP
UDP Messaging Protocol:
UDP port 54211
TCP Downloading Protocol:
TCP port 54267
HTTP 1.0 Alternate Port:
TCP port 49152-65535 (not
including 54267)
Network Name: webtc_xxxxx,
where xxxxx is the device’s
serial number
Max Number of Simultaneous
HTTP Connections: 3
Max Number of Non-HTTP
TCP Sockets: 5
Network Security
Security Implementation: IP
address based session manager
with username/password login for
configuration and control
transactions (data is not secured)
Session Timeout: 5 min with
no activity
Username/Password
Encryption: Base64 (the default
web page does not support
encryption if Javascript is disabled
in the web browser)
(Software Paced):
Digital Input: 50 port reads
or single bit reads per second
(typical)
Digital Output: 100 port
writes or single bit writes per
second (typical)
Input High Voltage: 4.0V min,
5.5V absolute max (5V mode);
2.64V min, 5.5V absolute max
(3.3V mode)
Input Low Voltage: 1.0V max,
-0.3V absolute min (5V mode);
0.66V max, -0.3V absolute min
(3.3V mode)
Output High Voltage: 4.3V min
OM-WEB-TC, shown
smaller than actual size.
(5V mode), 2.7V min (3.3V mode);
IOH = -2.5 mA
Output Low Voltage: 0.6V max
(IOL = 2.5 mA)
Temperature Alarms: 8
(one per digital I/O line)
NETWORK
Ethernet Compliance
Device Type: IEEE 802.3
ethernet 10Base-T
Device Compatibility: IEEE
802.3-2003 10 Mpbs media
access control
Ethernet Connection
Ethernet Type: 10Base-T
Connector: RJ-45, 8 position
Cable: CAT-5 shielded,
unshielded twisted pair
Length: 100 m (328') max
MAC Address: 00:12:71:
Cx:xx:xx where xxxxx is the
device’s serial number
To Order, Call or Shop Online at omega.com
Compatible Thermocouple Input Types
Type Temperature Range Accuracy (ºC)*
-210 to 1200ºC (-346 to 2192ºF) ±0.724 typ, ±1.282 max (0ºC)
-210 to 1372ºC (-346 to 2502ºF) ±0.730 typ, ±1.292 max (0ºC)
-200 to 400ºC (-328 to 752ºF) ±0.754 typ, ±1.334 max (0ºC)
-200 to 1000ºC (-328 to 1832ºF) ±0.826 typ, ±1.465 max (0ºC)
-50 to 1768ºC (-58 to 3214ºF) ±0.475 typ, ±0.844 max (250ºC)
-50 to 1768ºC (-58 to 3214ºF) ±0.479 typ, ±0.853 max (250ºC)
250 to 1820ºC (482 to 3308ºF) ±0.821 typ, ±0.824 max (700ºC)
-200 to 1300ºC (-328 to 2372ºF) ±0.735 typ, ±1.300 max (0ºC)
Includes cold junction compensation measurement error.
*
±1.762 typ, ±3.098 max (-210ºC)
±0.684 typ, ±1.178 max (1200ºC)
±1.843 typ, ±3.318 max (-210ºC)
±0.799 typ, ±1.495 max (1372ºC)
±1.797 typ, ±3.226 max (-200ºC)
±0.496 typ, ±0.856 max (400ºC)
±1.708 typ, ±3.050 max (-200ºC)
±0.564 typ, ±1.010 max (1000ºC)
±1.124 typ, ±2.010 max (-50ºC)
±0.347 typ, ±0.612 max (1768ºC)
±1.058 typ, ±1.892 max (-50ºC)
±0.416 typ, ±0.734 max (1768ºC)
±2.192 typ, ±2.199 max (250ºC)
±0.469 typ, ±0.471 max (1820ºC)
±1.897 typ, ±3.406 max (-200ºC)
±0.571 typ, ±0.978 max (1300ºC)
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Vulnerabilities: Denial of service
Extended Warranty
Program
SM
attacks, username/password
spoofing, script probing and
simple decryption
GENERAL
Memory: EEPROM (512 bytes
for sensor configuration); FLASH
(2 MB for device configuration and
website storage)
Microcontroller: One highperformance 8-bit RISC
microcontroller and one highperformance 16-bit RISC
microcontroller
Power Supply Voltage (Supplied
by Included External Power
Supply): 5 Vdc ±5%
Power Supply Current (Supplied
by Included External Power
Supply): 440 mA max
User Output Voltage (5V):
4.65V min to 5.25V max
Dimensions:
127 L x 89 W x 36 mm D
(5.0 x 3.5 x 1.4")
Input Connections:
Screw terminal blocks
(accept 16 to 30 AWG wire)
Operating Temperature:
0 to 55ºC (32 to 131ºF),
0 to 90% RH non-condensing
Storage Temperature: -40 to 85ºC
(-40 to 185ºF)
Weight: 160 g (5.6 oz)
Comes complete with ethernet cable, 100 to 240 Vac AC adaptor with USA plug, quick start guide, software and operator’s manual on CD.
Ordering Example: OM-WEB-TC, 8-channel web-enabled thermocouple input module and OCW-1 OMEGACARE
warranty adds 1 year to standard 1 year warranty.
4
OM-WEB-TC,
shown smaller
than actual size.
OMEGACARESMextended warranty program
is available for models shown on this page.
Ask your sales representative for full details
when placing an order. OMEGACARE
covers parts, labor and equivalent loaners.
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To Order (Specify Model Number)
Model No. Description
OM-WEB-TC 8-channel web-enabled thermocouple input module
SWD-TRACERDAQ-PRO TracerDAQ Pro software
To Order, Call or Shop Online at omega.com
AVAILABLE FOR FAST DELIVERY!
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1 year extended
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