Dataq DI-1000TC User manual

The way PC-based instrumentation should be
DI-1000TC
Instrumentation Modules for Temperature Measurements
User's Manual
Manual Revision M
Copyright © 2012 by DATAQ Instruments, Inc. The Information contained herein is the exclusive property of
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pany. The distribution of this material outside the company may occur only as authorized by the company in writing.
DATAQ Instruments' hardware and software products are not designed to be used in the diagnosis and treatment of
humans, nor are they to be used as critical components in any life-support systems whose failure to perform can rea-
sonably be expected to cause significant injury to humans.
DATAQ, the DATAQ logo, and WINDAQ are registered trademarks of DATAQ Instruments, Inc. All rights reserved.
241 Springside Drive
Akron, Ohio 44333, USA
Telephone: [phone]
Fax: [phone]
Designed and manufactured in the
United States of America
M-100774

Warranty and Service Policy
Product Warranty
DATAQ Instruments, Inc. warrants that this hardware will be free from defects in materials and workmanship under
normal use and service for a period of one year from the date of shipment. DATAQ Instruments' obligations under
this warranty shall not arise until the defective material is shipped freight prepaid to DATAQ Instruments. The only
responsibility of DATAQ Instruments under this warranty is to repair or replace, at its discretion and on a free of
charge basis, the defective material.
This warranty does not extend to products that have been repaired or altered by persons other than DATAQ Instru-
ments employees, or products that have been subjected to misuse, neglect, improper installation, or accident.
DATAQ Instruments shall have no liability for incidental or consequential damages of any kind arising out of the sale,
installation, or use of its products.
Service Policy
1. All products returned to DATAQ Instruments for service, regardless of warranty status, must be on a freight-pre-
paid basis.
2. DATAQ Instruments will repair or replace any defective product within 5 days of its receipt.
3. For in-warranty repairs, DATAQ Instruments will return repaired items to the buyer freight prepaid. Out of war-
ranty repairs will be returned with freight prepaid and added to the service invoice.

DI–1000TC User Manual
Table of Contents
v
Table of Contents
Warranty and Service Policy ................................................................................................................ iii
1. Introduction ........................................................................................................................................ 1
Features .............................................................................................................................................. 1
Thermocouple Inputs ......................................................................................................................... 1
2. Specifications ...................................................................................................................................... 3
Signal Connections ............................................................................................................................ 3
Scanning Characteristics .................................................................................................................... 3
Expansion Capabilities ...................................................................................................................... 3
Max. Sample Rate from Expansion ................................................................................................... 4
Calibration ......................................................................................................................................... 4
RS-422 Interface ................................................................................................................................ 4
General ............................................................................................................................................... 4
3. Getting Started ................................................................................................................................... 5
Unpacking .......................................................................................................................................... 5
Applying Power to the DI-1000TC Instrument ................................................................................. 5
Connecting the DI-1000TC Instrument to your Computer ............................................................... 5
RS-422 Interface Port Pin Out ........................................................................................................... 6
Adapters ............................................................................................................................................. 6
DI-1000TC Instrument Controls and Indicators ................................................................................ 6
DI-1000TC Instrument Front Panel 6
DI-1000TC Instrument Rear Panel 7
Installing the Software ....................................................................................................................... 7
DI-1000-232-F Installation 7
DI-1000-USB Installation 8
Installing Multiple Devices in a Daisy Chain .................................................................................... 10
4. Module Configuration Software ....................................................................................................... 13
Setting up Addresses for Your Devices ............................................................................................. 13
Calibration ......................................................................................................................................... 14
5. WinDaq® Software ............................................................................................................................ 15
Sample Rate ....................................................................................................................................... 15
Channel Settings ................................................................................................................................ 16
Channels ............................................................................................................................................ 17
User Annotation ................................................................................................................................. 18

DI–1000TC User Manual
Introduction
1
1. Introduction
Congratulations on your purchase of a DI-1000TC data acquisition instrument for Thermocouple measurements.
This manual is written with the assumption that you have a general understanding of data acquisition, digital I/O and
DSP operations, and that you possess enough proficiency in software to write your own application and/or diagnostic
programs.
Features
The DI-1000TC provides the following features:
• Expandable: Up to 8 DI-1000TC units (64 channels max) may be daisy-chained together to form one distributed
synchronous data acquisition system.
• Built-in RS-422 Interface: This allows DI-1000TC units to connect to any host PC through an inexpensive
adapter via an RS-232 or USB port. This RS-422 interface also serves as an expansion port for other DI-1000
Series instruments.
• Isolation: The DI-1000TC's 1000VDC and Peak AC input-to-output and channel-to-channel isolation allows
grounded TC measurements.
• High Accuracy and Resolution Design: Allows sharpened decisions with an overall accuracy of ±0.2% of span,
and temperature resolution as fine as 0.08°C.
• Portable: The DI-1000TC is provided in a small (13.81D × 10.48W × 3.81H centimeters; 5-7/16D × 4-1/8W × 1-
1/2H inches) enclosure consisting of an aluminum base and all-steel wraparound.
The following provides a brief overview of the major subsystems of the DI-1000TC Series.
Thermocouple Inputs
Depending on the model of DI-1000TC you purchased, you will have either 4 or 8 thermocouple inputs. Each input
channel may be configured in software to support one of seven thermocouple types: J, K, T, E, S, B, or R. Tempera-
ture measurements may range from -200°C to +1820°C (-328°F to +3308°F), depending upon thermocouple type.
Each DI-1000TC thermocouple channel features a panel-mounted, miniature spade connector, and all input channels
are electrically isolated from ground and each other up to 1000VDC, or peak AC.

DI–1000TC User Manual
Specifications
3
2. Specifications
Signal Connections
The DI-1000TC units are provided in 4- or 8-channel versions. Each thermocouple channel features a panel-
mounted, miniature spade connector, and all input channels are electrically isolated from ground and each other up to
1000VDC, or peak AC.
Scanning Characteristics
Expansion Capabilities
Number of channels: Configurable as 4- or 8-channel modules within one enclosure
Supported Thermocouple Types: J, K, T, E, S, B, R, mix and match as required
Thermocouple Input Connectors: Panel-mounted miniature spade, universal TC-type
Open TC detection: An open thermocouple forces the channel to minus full scale
Cold Junction Sensors: One for every group of 4 or 8 channels, depending upon configuration
Cold Junction Compensation Range: -40 to 80°C
Linearization: Accomplished transparently by the software driver to deliver scaled tem-
perature values to the host program.
Input Impedance: >1M
Input Bias Current: 50pA
Input Offset Voltage: <5 V
Maximum Normal Mode Voltage: 250 VDC/Peak AC momentary; 50 VDC/Peak AC continuous
Maximum Common Mode Voltage: 1000 VDC or Peak AC
Common Mode Rejection: >160db @ 50 and 60Hz
Channel-to-Channel Isolation: 1000 VDC or Peak AC
Input-to-Output Isolation: 1000 VDC or Peak AC
Channel-to-Channel Crosstalk Rejection: >160db
Temperature Coefficient: <0.04 V/°C
Digital Filtering: 128-tap comb filter per channel, decimating
Voltage Range: 60mV full scale
Sample Rate: 5 samples/second/channel, fixed
Scan List: 9-position, 8 positions may be programmed for channel number and TC type; ninth position re-
served for CJC access
Sample Buffer: 18 samples max.
Method: Via integral RS-422 port to other DI-1000 Series Modules

DI–1000TC User Manual
Specifications
4
Max. Sample Rate from Expansion
Calibration
RS-422 Interface
General
Units: 5 samples/second/channel
Maximum Distance: 4,000 feet
Calibration Cycle: One year
Calibration Method: Calibration constants are stored within each module's EEPROM. Provided calibration soft-
ware to automate calibration in the field.
Supported Baud Rates: 4800, 9600 (default), 19200, 38400, 56800, 115200
Data Bits: 8
Stop Bits: 1
Parity: None
Protocol: ModBus ASCII
Connector: RJ-45
Pinout is as follows: 1 Receive (+)
2 Receive (-)
3 XMIT (-)
6 XMIT (+)
8 GND
Panel Indicators: Power and Active LEDs
Operating Environment: 40 to +80°C
Enclosure: Aluminum base with steel wraparound. Aluminum end-panels with plastic bezels.
Dimensions: 5-7/16D × 4-1/8W × 1-1/2H inches
13.81D × 10.48W × 3.81H centimeters
Weight: 14 oz. (four channels), 17 oz. (eight channels)
Power Requirements: 9 to 36 VDC, 1 watt