Measurement Computing USB-5200 Series Manuale utente

USB-5203

Multi-sensor Measurement and Data Logger

Document Revision 14A

January 2015

User's Guide

HM USB-5203

Trademark and Copyright Information

Measurement Computing Corporation, InstaCal, Universal Library, and the Measurement Computing logo are

either trademarks or registered trademarks of MeasurementComputing Corporation. Refer to the Copyrights &

Trademarks section on mccdaq.com/legal for more information about Measurement Computing trademarks.

Other product and company namesmentioned herein are trademarks or trade names of their respective

companies.

reproduced, stored in a retrieval system, or transmitted, in any form by any means, electronic,mechanical, by

photocopying, recording, or otherwise without the prior written permission of Measurement Computing

Corporation.

Notice

Measurement Computing Corporation does not authorize any Measurement Computing Corporation product for

use in life support systems and/or devices without prior written consent from Measurement Computing

Corporation. Life support devices/systems are devices or systems that, a) are intended for surgical implantation

into the body, or b) support or sustain life and whose failure to perform can be reasonably expected to result in

injury. Measurement Computing Corporation products are not designed with the components required, and are

not subject to the testing required to ensure a level of reliability suitable for the treatment and diagnosis of

people.

Table of Contents

Preface

About this User’s Guide.......................................................................................................................5

What you will learn from this user's guide .........................................................................................................5

Conventions in this user's guide .........................................................................................................................5

Where to find more information.........................................................................................................................5

Chapter 1

Introducing the USB-5203 ....................................................................................................................6

Logging data with the USB-5203 ..................................................................................................................................... 6

Functional block diagram...................................................................................................................................7

Chapter 2

Installing the USB-5203 ........................................................................................................................8

Unpacking...........................................................................................................................................................8

Installing the software ........................................................................................................................................8

Installing the hardware .......................................................................................................................................8

Firmware revision 2.12 and earlier ................................................................................................................................... 8

Firmware revision 3.0 and later ........................................................................................................................................ 8

Configuring the hardware...................................................................................................................................9

Configuring data logging options...................................................................................................................................... 9

Calibrating the hardware.....................................................................................................................................9

Factory calibration............................................................................................................................................................ 9

Field-calibration................................................................................................................................................................ 9

Chapter 3

Sensor Connections ...........................................................................................................................10

Screw terminal pin out......................................................................................................................................10

Sensor input terminals (C0H/C0L to C7H/C7L)..............................................................................................................10

Current excitation output terminals (±I1 to ±I4)..............................................................................................................11

Four-wire, two sensor common terminals (4W01 to 4W67)............................................................................................11

Two sensor common terminals (IC01 to IC67)................................................................................................................11

Digital terminals (DIO0 to DIO7)....................................................................................................................................11

CJC sensors......................................................................................................................................................................11

Power terminals (+5V).....................................................................................................................................................11

Ground terminals (GND).................................................................................................................................................11

Thermocouple connections...............................................................................................................................11

Wiring configuration........................................................................................................................................................12

RTD and thermistor connections......................................................................................................................12

Two-wire configuration ...................................................................................................................................................13

Three-wire configuration .................................................................................................................................................14

Four-wire configuration...................................................................................................................................................14

Semiconductor sensor measurements...............................................................................................................15

Wiring configuration........................................................................................................................................................15

Digital I/O connections.....................................................................................................................................16

Configuring the DIO channels to generate alarms ...........................................................................................................16

Chapter 4

Functional Details ...............................................................................................................................17

Thermocouple measurements...........................................................................................................................17

Cold junction compensation (CJC)..................................................................................................................................17

Data linearization.............................................................................................................................................................17

Open-thermocouple detection (OTD) ..............................................................................................................................17

RTD and thermistor measurements ..................................................................................................................18

Data linearization.............................................................................................................................................................18

External components ........................................................................................................................................18

USB-5203 User's Guide

Screw terminals................................................................................................................................................................18

USB connector.................................................................................................................................................................19

LED .................................................................................................................................................................................19

CompactFlash®memory card slot....................................................................................................................................19

Data logging button .........................................................................................................................................................20

External power supply......................................................................................................................................21

Disconnecting the USB-5203 from the computer.............................................................................................21

Transferring binary data after a logging session...............................................................................................21

Converting binary data after a logging session.................................................................................................21

Chapter 5

Specifications......................................................................................................................................22

Analog input .....................................................................................................................................................22

Channel configurations.....................................................................................................................................22

Compatible sensors...........................................................................................................................................23

Accuracy...........................................................................................................................................................23

Thermocouple measurement accuracy.............................................................................................................................23

Semiconductor sensor measurement accuracy.................................................................................................................24

RTD measurement accuracy............................................................................................................................................24

Thermistor measurement accuracy ..................................................................................................................................25

Throughput rate to PC ......................................................................................................................................25

Digital input/output...........................................................................................................................................26

Temperature alarms..........................................................................................................................................27

Memory ............................................................................................................................................................27

Microcontroller.................................................................................................................................................27

Data Logging....................................................................................................................................................28

Real time clock.................................................................................................................................................28

USB +5V voltage .............................................................................................................................................29

Power................................................................................................................................................................29

USB specifications ...........................................................................................................................................29

Current excitation outputs (Ix+) .......................................................................................................................30

Environmental ..................................................................................................................................................30

Mechanical .......................................................................................................................................................30

Screw terminal connector.................................................................................................................................30

Declaration of Conformity..................................................................................................................32

Preface

About this User’s Guide

What you will learn from this user's guide

This user's guide describes the Measurement Computing USB-5203 data acquisition device and lists device

specifications.

Conventions in this user's guide

For more information

Text presented in a box signifies additional information related to the subject matter.

Caution! Shaded caution statements 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, text boxes, and check boxes.

italic text Italic text is used for the names of manuals and help topic titles, and to emphasize a word or phrase.

Where to find more information

Additional information about USB-5203 hardware is available on our website at www.mccdaq.com. You can

also contact Measurement Computing Corporation with specific questions.

Knowledgebase: kb.mccdaq.com

Tech support form: www.mccdaq.com/support/support_form.aspx

Email: techsupport@mccdaq.com

Phone: 508-946-5100 and follow the instructions for reaching Tech Support

For international customers, contact your local distributor. Refer to the International Distributors section on our

website at www.mccdaq.com/International.

Chapter 1

Introducing the USB-5203

The USB-5203 provides eight differential input channels that are software-programmable for different sensor

categories including thermocouple, RTDs, thermistors, and semiconductor sensors.

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.

With the USB-5203, you can take measurements from four sensor categories:

Thermocouple – types J, K, R, S, T, N, E, and B

Resistance temperature detectors (RTDs) – 2, 3, or 4-wire measurements of 100 Ω platinum RTDs

Thermistors – 2, 3, or 4-wire measurements

Semiconductor temperature sensors – LM36 or equivalent

The USB-5203 provides a 24-bit analog-to-digital (A/D) converter for each pair of differential analog input

channels. Each pair of differential inputs constitutes a channel pair.

You can connect a different category of sensor to each channel pair, but you cannot mix categories among the

channels that constitute a channel pair (although it is permissible to mix thermocouple types).

The USB-5203 provides two integrated cold junction compensation (CJC) sensors for thermocouple

measurements, and built-in current excitation sources for resistive sensor measurements.

An open thermocouple detection feature lets you detect a broken thermocouple. An on-board microprocessor

automatically linearizes the measurement data according to the sensor category.

The USB-5203 features 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

alarm is software configurable as active high or low. You set up the temperature threshold conditions to activate

each alarm. When an alarm is activated, the associated DIO channel is driven to the output state.

You can log your sensor measurements to a CompactFlash®memory card. CompactFlash is a removable non-

volatile storage device. A 512 MB CompactFlash memory card is shipped with the device to store your data.

For more information, refer to Logging data with the USB-5203 below.

The USB-5203 device is compatible with both USB 1.1 and USB 2.0 ports. The speed of the device may be

limited when using a USB 1.1 port due to the difference in transfer rates on the USB 1.1 versions of the

protocol (low-speed and full-speed).

External power is required for data logging operations

Due to processing limitations, you cannot log data to the memory card when the USB-5203 is connected to your

computer's active USB bus. When operating as a data logger, disconnect the USB cable from the computer, and

connect the external power supply shipped with the device.

The USB-5203 is a standalone plug-and-play device. External power is required for data logging mode only. All

configurable options are software programmable. The USB-5203 is fully software calibrated.

Logging data with the USB-5203

Due to processing limitations, you cannot log data to the memory card when the USB-5203 is connected to an

active USB port. When operating as a data logger, disconnect the USB cable from the computer, and connect

the external power supply shipped with the device.

The USB-5203 has many software-selectable options for setting up data logging.

You can record:

temperature (°C) or raw data from selected input channels

timestamp data

CJC sensor readings

USB-5203 User's Guide Introducing the USB-5203

You can specify the number of seconds between samples. You can begin logging data at power up, when you

press the data logging button, or at a specific date and time.

Data is stored on the memory card in binary files. After logging measurements, you can transfer the files to your

computer. You can use InstaCal to convert the files to .csv format for use in Microsoft Excel files, or to .txt

format for use in other applications.

Functional block diagram

USB-5203 functions are illustrated in the block diagram shown here.

Figure 1. Functional block diagram

Chapter 2

Installing the USB-5203

Unpacking

As with any electronic device, you should take care while handling to avoid damage from static

electricity. 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.

Installing the software

Refer to the MCC DAQ Quick Start for instructions on installing the software on the MCC DAQ CD. Refer to

the device product page on the Measurement Computing website for information about the included and

optional software supported by the USB-5203.

Install the software before you install your device

The driver needed to run the USB-5203 is installed with the software. Therefore, you need to install the

software package you plan to use before you install the hardware.

Installing the hardware

To connect the USB-5203 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 USB-5203.

If you are connecting the USB-5203 to an external self-powered hub, connect the USB hub to the computer

before you connect the device to the hub. This ensures that the device detects the hub as an active USB port.

Firmware revision 2.12 and earlier

When you connect the USB-5203 for the first time, a Found New Hardware dialog opens when the operating

system detects the device. When the dialog closes, the installation is complete. The device LED will blink and

then remain on. This indicates that communication is established between the USB-5203 and your computer.

Firmware revision 3.0 and later

The USB-5203 installs as a composite device with separate devices attached. When you connect the USB-5203

for the first time, a Found New Hardware dialog opens as each USB-5203 interface is detected.

It is normal for multiple dialogs to open when you connect the USB-5203 for the first time. For additional

information, refer to the "Notes on installing and using the USB-5201 and USB-5203 data logging devices" that

ships with the device.

When the last dialog closes the installation is complete. The LED on the USB-5203 will blink and then remain

on. This indicates that communication is established between the USB-5203 and your computer.

Caution! Do not disconnect any device from the USB bus while the computer is communicating with the

USB-5203, or you may lose data and/or your ability to communicate with the USB-5203.

If the LED turns off

If the LED is lit but then turns off, the computer has lost communication with the USB-5203. To restore

communication, disconnect the USB cable from the computer, and then reconnect it. This should restore

communication, and the LED should turn back on.

USB-5203 User's Guide Installing the USB-5203

Configuring the hardware

All hardware configuration options on the USB-5203 are software-selectable. The configurable options

dynamically update according to the selected sensor category. All hardware configuration options on the USB-

5203 are software-selectable. Settings are stored on an isolated microcontroller in EEPROM – which is non-

volatile memory on the USB-5203 – and are loaded on power-up.

Default configuration

The factory default sensor type configuration is Disabled. The disabled mode disconnects the analog inputs

from the terminal blocks and internally grounds all of the A/D inputs. This mode also disables each of the

current excitation sources.

Warm up

Allow the USB-5203 to warm up for 30 minutes before taking measurements. This warm up time minimizes

thermal drift and achieves the specified rated accuracy of measurements. For RTD or thermistor measurements,

this warm-up time is also required to stabilize the internal current reference.

Configuring data logging options

The following data logging options are programmable with software.

select the input channels to log

set the data format

set the start mode

set up alarm conditions

copy and convert saved binary files

delete data files

All data logging options are stored on the USB-5203 in non-volatile memory in EEPROM, and are loaded on

power up.

Calibrating the hardware

Factory calibration

The Measurement Computing Manufacturing Test department performs the initial factory calibration. Return

the device to Measurement Computing Corporation when calibration is required. The recommended calibration

interval is one year.

Field-calibration

The USB-5203 supports field-calibration with InstaCal. Calibrate the device whenever the ambient temperature

changes by more than ±10 °C from the last self-calibration.

Allow the USB-5203 to operate for at least 30 minutes before calibrating.

Chapter 3

Sensor Connections

The USB-5203 supports the following temperature sensor types:

Thermocouple – types J, K, R, S, T, N, E, and B

Resistance temperature detectors (RTDs) – 2, 3, or 4-wire measurement modes of 100 Ω platinum RTDs.

Thermistors – 2, 3, or 4-wire measurement modes.

Semiconductor temperature sensors – LM36 or equivalent

Sensor selection

The type of sensor you select will depend on your application needs. Review the temperature ranges and

accuracies of each sensor type to determine which is best suited for your application.

Screw terminal pin out

The USB-5203 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. Signals are identified in Figure 2.

Figure 2. USB-5203 screw terminal pin numbers

Use 16 AWG to 30 AWG wire for your signal connections.

Tighten screw terminal connections

When making connections to the screw terminals, fully tighten the screw. Simply touching the top of the screw

terminal is not sufficient to make a proper connection.

Sensor input terminals (C0H/C0L to C7H/C7L)

You can connect up to eight temperature sensors to the differential sensor inputs (C0H/C0L to C7H/C7L).

Supported sensor categories include thermocouples, RTDs, thermistors, or semiconductor sensors.

Do not mix sensor categories within channel pairs. It is permitted to mix thermocouple types (J, K, R, S, T, N,

E, and B) within channel pairs, however.

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