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Summary of Contents for Meilhaus Electronic RedLab TC
- Page 2 RedLab TC USB-based 8-Channel Thermocouple Input Module User's Guide Document Revision 1.4 E, January, 2008 © Copyright 2008, Meilhaus Electronic...
- Page 3 However, mistakes may not have been erased completely. For this reason, the firm Meilhaus Electronic GmbH feels obliged to point out that they cannot be take on neither any warranty (apart from the claims for warranty as agreed) nor legal responsibility or liability for consequences caused by incorrect instructions.
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Page 4: Table Of Contents
Introducing the RedLab TC ........................7 Overview: RedLab TC features ..........................7 RedLab TC block diagram..........................8 Software features ..............................8 Connecting a RedLab TC to your computer is easy ...................9 Chapter 2 Installing the RedLab TC ........................10 What comes with your RedLab TC shipment? ....................10 Hardware ..................................10... - Page 5 RedLab TC User's Guide Digital input/output............................21 Memory ................................21 Microcontroller..............................21 USB +5V voltage .............................21 Power................................22 USB specifications ............................22 Environmental ..............................22 Mechanical ...............................22 Screw terminal connector type and pin out.......................22 Screw terminal pin out ..............................23...
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Page 6: Preface
About this User’s Guide What you will learn from this user’s guide This user’s guide explains how to install, configure, and use the RedLab TC so that you get the most out of its USB-based temperature measurement features. This user’s guide also refers you to related documents available on our web site, and to technical support resources. -
Page 7: Introducing The Redlab Tc
Chapter 1 Introducing the RedLab TC Overview: RedLab TC features This user's guide contains all of the information you need to connect the RedLab TC to your computer and to the signals you want to measure. ® The RedLab TC is a USB 2.0 full-speed, thermocouple input module that is supported under popular Microsoft ®... -
Page 8: Redlab Tc Block Diagram
Software features For information on the features of InstaCal and the other software included with your RedLab TC, refer to the Quick Start Guide that shipped with your device. The Quick Start Guide is also available in PDF on our RedLab... -
Page 9: Connecting A Redlab Tc To Your Computer Is Easy
HID because it is a standard, and its performance delivers full control and maximizes data transfer rates for your RedLab TC. No third-party device driver is required. The RedLab TC is plug-and-play. There are no jumpers to position, DIP switches to set, or interrupts to configure. -
Page 10: Installing The Redlab Tc
In addition to this hardware user's guide, you should also receive the Quick Start Guide (available on our RedLab CD (root directory)). This booklet supplies a brief description of the software you received with your RedLab TC and information regarding installation of that software. Please read this booklet completely before installing any software or hardware. -
Page 11: Unpacking The Redlab Tc
Installing the RedLab TC To connect the RedLab TC to your system, turn your computer on, and connect the USB cable to a USB port on your computer or to an external USB hub that is connected to your computer. The USB cable provides power and communication to the RedLab TC. -
Page 12: Configuring The Redlab Tc
The factory default configuration is Type J thermocouple. Allow the RedLab TC to warm up for 30 minutes after powering up before taking measurements. This warm up time minimizes thermal drift and achieves the specified rated accuracy of measurements. -
Page 13: Sensor Connections
Screw terminal pin out The RedLab TC has four rows of screw terminals — two rows on the top edge of the housing, and two rows on the bottom edge. Each row has 26 connections. Between each bank of screw terminals are two integrated CJC sensors used for thermocouple measurements. -
Page 14: Thermocouple Input Terminals (C0H/C0L To C7H/C7L)
DIO0 DIO7 software configurable for input or output. CJC sensors The RedLab TC has two built in high-resolution temperature sensors. One sensor is located on the right side of the package, and one sensor is located at the left side. -
Page 15: Thermocouple Connections
Connect the thermocouple to the RedLab TC using a differential configuration, as shown in Figure 3. Figure 3. Typical thermocouple connection Connect thermocouples to the RedLab TC such that they are floating with respect to GND (pins 9, 19, 28, 38). The RedLab TC... -
Page 16: Digital I/O Connections
(default). You can request the factory to configure the resistor for pull-down to ground if desired. When you configure the digital bits for input, you can use the RedLab TC digital I/O terminals to detect the state of any TTL-level input. Refer to the schematic shown in Figure 4. If you set the switch to the +5V input, DIO0 reads TRUE (1). -
Page 17: Functional Details
+2.5 V to the thermocouple’s low side at the C#L input. Always connect thermocouple sensors to the RedLab TC in a floating fashion. Do not attempt to connect the thermocouple low side C#L to GND or to a ground referencing resistor. -
Page 18: Usb Connector
The USB connector provides +5V power and communication. No external power supply is required. The LED indicates the communication status of the RedLab TC. It uses up to 5 mA of current. The table below defines the function of the RedLab TC LED. -
Page 19: Specifications
Chapter 5 Specifications Typical for 25 °C unless otherwise specified. Specifications in italic text are guaranteed by design. Analog input Table 1. Generic analog input specifications Parameter Conditions Specification A/D converters Four dual 24-bit, Sigma-Delta type Number of channels 8 differential Input isolation 500 VDC minimum between field wiring and USB interface... -
Page 20: Accuracy
These specs are for one year, or 3000 operating hours, whichever comes first and for operation of the RedLab TC between 15 °C and 35 °C. For measurements outside this range, add ±0.5 degree to the maximum error shown. There are CJC sensors on each side of the module. The accuracy listed above assumes the screw terminals are at the same temperature as the CJC sensor. - Page 21 3.8 V min. (IOH = -2.5 mA) All ground pins on the RedLab TC (pins 9, 19, 28, 38) are isolated from earth ground. If a connection Note 7: is made to earth ground when using digital I/O and conductive thermocouples, the thermocouples are no longer isolated.
- Page 22 Isolation Measurement system to PC 500 VDC min. This is the total current requirement for the RedLab TC which includes up to 10 mA for the status Note 8: LED. Self-Powered Hub refers to a USB hub with an external power supply. Self-powered hubs allow a Note 9: connected USB device to draw up to 500 mA.
- Page 23 RedLab TC User's Guide Specifications Screw terminal pin out Table 14. Screw terminal pin out Signal Name Pin Description Signal Name Pin Description RSVD Reserved, Do Not Use RSVD Reserved, Do Not Use CH0 sensor input (+) CH7 sensor input (...
- Page 24 Meilhaus Electronic GmbH Fischerstrasse 2 D-82178 Puchheim, Germany Phone: +49 (0)89 89 01 66-0 Fax: +49 (0)89 89 01 66-77 E-Mail: sales@meilhaus.com http://www.meilhaus.com...
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