Eight Channel Wireless Thermocouple Input Module |
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Eight Channel Wireless Thermocouple Input Module
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8 Thermocouple Input Channels
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Supports Thermocouple Types J, K, T, E, N, R, S, B
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Built-In Cold Junction Compensation and Open Thermocouple Detection
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Eight Digital I/O–User Configuration for Alarms
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802.15.4 Wireless Protocol
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Range: Up to 46 m (150') Indoors and 732 m (2400') Outdoors
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View related products - Wireless Sensors, Transmitters, Receivers, Meters & Controllers
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The OM-WLS-TC is a wireless USB
2.0 full-speed thermocouple input
module (fully compatible with both
USB 1.1 and 2.0). The OM-WLS-TC
provides 8 differential thermocouple
input channels. Eight independent,
TTL compatible digital I/O channels
are provided to monitor TTL level
inputs, communicate with external
devices and to generate alarms.
The digital I/O channels are software
programmable for input or output.
The OM-WLS-TC supports Types J,
K, T, E, N, R, S and B thermocouples.
Two integrated cold junction
compensation (CJC) sensors are
included for thermocouple
measurements. An open
thermocouple detection feature
allows detection of a broken
thermocouple. An onboard
microprocessor automatically
linearizes the measurement data.
The OM-WLS-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 channels.
The output of each alarm is
software configurable as active high
or low. The temperature threshold
conditions to activate each alarm
are software programmable. When
an alarm is activated, the
associated digital output channel is
driven to the output state. All
configurable options are software
programmable. The OM-WLS-TC is
fully software-calibrated.
The OM-WLS-TC can be operated
as a standalone plug-and-play
device which draws power through
the USB cable. The unit can also be
operated as a remote device that
communicates with the computer
through the OM-WLS-IFC USB-towireless
interface device. An
external power supply is shipped
with the device to provide power
during remote operation.
When operating as a remote device,
the OM-WLS-TC communicates
with the computer through the
OM-WLS-IFC device connected to
the computer’s USB port. Before the
OM-WLS-TC can be operated
remotely, it needs to be connected
to the computer’s USB port and the
network parameters configured to
establish a wireless link with the
interface device.
Only devices with the same
parameter settings can
communicate with each other. All
configurable options are software
programmable using the included
InstaCal™ utility software.
LEDs on the OM-WLS-TC
indicate the status of
communications over the wireless
link. A LED bar graph shows the
fade margin of signals received
by the OM-WLS-TC.
The OM-WLS-TC modules ship with an impressive array of software, including the new TracerDAQ®, a full-featured, out-of-the-box data logging, viewing, and analysis application. Driver support and detailed example programs are included for Universal Library programming
libraries for Microsoft® Visual Studio® programming languages, and other
languages, including DASYLab®, and ULx for NI LabVIEW® (comprehensive
library of VIs and example programs compatible with 32-bit and 64-bit
LabVIEW v8.5 through 2012) and InstaCalTM installation, calibration
and test utility-powerful solutions for programmers and nonprogrammers
alike. These modules operate under Microsoft Windows® XP (32-bit only) and VISTA/7/8 (32-bit and 64-bit) operating systems.
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
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
Open Thermocouple Detection:
Automatically enabled when a channel
is configured for a thermocouple sensor
CJC Sensor Accuracy:
±0.25°C typical, ±0.5°C max (15 to 35°C);
-1.0 to 0.50°C max
(0 to 70°C)
DIGITAL I/O
Digital I/O Channels: 8
Type: CMOS
Configuration: Each DIO bit can be
independently configured for input or
output.
Power on reset is input mode
unless bit is configured for alarm
Pull-Up/Pull-Down Configuration:
All pins pulled up to 5V via 47 kΩ
resistors (default).
Pull-down to ground (GND) also available
Digital I/O Transfer Rate
(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: 2.0V min, 5.5V absolute max
Input Low Voltage: 0.8V min, -0.5V absolute min
Output High Voltage: 0.7V max (IOL = 2.5 mA)
Output Low Voltage: 3.8V min (IOH = -2.5 mA)
Temperature Alarms: 8 (one per digital I/O line)
WIRELESS COMMUNICATIONS
Protocol: IEEE 802.15.4, ISM 2.4 GHz
Range: Up to 50 m (150') indoor/urban; up to 1/2 mile
(750 m) outdoor line-of-sight
Transmit Power: 10 mW (10 dBm)
Receiver Sensitivity: -100 dBm (1% packet error rate)
RF Channels: 12 direct sequence
channels available,
channels 12-23 (2.410-2.465 GHz),
software selectable
Addressing: 16-bit PAN (personal area network)
IDs per channel
(software selectable)
Encryption: 128-bit AES (software selectable)
GENERAL
Memory: EEPROM
Microcontroller: Three highperformance
8-bit RISC microcontrollers
Power Supply Voltage (Supplied by USB Port):
4.75V min to 5.25V max
Power Supply Current (Supplied by USB Port):
500 mA max
User Output Voltage (+5V): 4.75V
min to 5.25V max, 10 mA max
(connected to self-powered hub)
Isolation: 500 Vdc min
measurement system to PC
Wireless Communications
Operation Supply Current:
500 mA max
(ac adaptor required
for remote wireless communications
operation)
USB Device Type: USB 2.0 (full-speed)
Device Compatibility: USB 1.1, USB 2.0
USB Cable Length: 3 m (10') max
Dimensions:127 L x 89 W x 36 mm H (5.0 x 3.5 x 1.4")
Input Connections: Screw terminal blocks
(accept 16 to 30 AWG wire)
Operating Temperature:
0 to 50°C (32 to 122°F), 0 to 90% RH non-condensing
Storage Temperature: -40 to 85°C (-40 to 185°F)
Weight: 180 g (6.4 oz)
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† Price are shown in RMB.
Note: Comes complete with a 2 m (6') USB cable, 100 to 240 Vac ac adaptor with USA plug, Quick Start Guide, software and operator’s manual on CD.
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Keywords:Eight Channel Wireless Thermocouple Input Module
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