Cole-Parmer 18200-80 Instruction Manual

Operating Manual

USB-based High-Precision 8-channel

Temperature Measurement device

and Data Logger

MODEL NO. 18200-80

The 18200-80 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 software­programmable for input or output.

With the 18200-80, 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 18200-80 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.

Cole-Parmer Instrument Company

625 East Bunker Court

Vernon Hills, Illinois 60061-1844

[phone]

[phone] (Fax)

800-323-4340

www.coleparmer.com

e-mail: [e-mail]
Document Revision 6, June, 2009

© Copyright 2009, Measurement Computing Corporation, 5203R10

2

Table of Contents

Preface

About this Operating Manual ............................................................................................................... 5

What you will learn from this manual ................................................................................................................ 5

Conventions in this manual ................................................................................................................................ 5

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

Chapter 1

Introducing the 18200-80 ...................................................................................................................... 6

Overview: 18200-80 features ............................................................................................................................. 6

Logging data with the 18200-80 ....................................................................................................................................... 7

18200-80 block diagram ..................................................................................................................................... 7

Software features ................................................................................................................................................ 7

Connecting a 18200-80 to your computer is easy ............................................................................................... 8

Chapter 2

Installing the 18200-80 .......................................................................................................................... 9

What comes with your 18200-80 shipment? ...................................................................................................... 9

Hardware .......................................................................................................................................................................... 9

Additional documentation ................................................................................................................................................. 9

Unpacking the 18200-80 .................................................................................................................................. 10

Installing the software ...................................................................................................................................... 10

Installing the hardware ..................................................................................................................................... 10

Firmware revision 2.12 and earlier ..................................................................................................................................10

Firmware revision 3.0 and later .......................................................................................................................................10

Configuring the 18200-80................................................................................................................................. 11

Configuring data logging options.....................................................................................................................................11

Calibrating the 18200-80 .................................................................................................................................. 11

Chapter 3

Sensor Connections ........................................................................................................................... 12

Screw terminal pin out ................................................................................................ ...................................... 12

Sensor input terminals (C0H/C0L to C7H/C7L) ..............................................................................................................13

Current excitation output terminals (±I1 to ±I4) ..............................................................................................................14

Four-wire, two sensor common terminals (4W01 to 4W67) ............................................................................................14

Two sensor common terminals (IC01 to IC67) ................................................................................................................14

Ground terminals (GND) .................................................................................................................................................14

Power terminals (+5V) .....................................................................................................................................................14

Digital terminals (DIO0 to DIO7) ....................................................................................................................................14

CJC sensors ......................................................................................................................................................................14

Thermocouple connections ............................................................................................................................... 14

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

RTD and thermistor connections ...................................................................................................................... 15

Two-wire configuration ...................................................................................................................................................16

Three-wire configuration .................................................................................................................................................17

Four-wire configuration ...................................................................................................................................................17

Semiconductor sensor measurements ............................................................................................................... 18

Wiring configuration ........................................................................................................................................................18

Digital I/O connections ..................................................................................................................................... 19

Configuring the DIO channels to generate alarms ...........................................................................................................19

3

18200-80 Operating Manual

Chapter 4

Functional Details ............................................................................................................................... 20

Thermocouple measurements ........................................................................................................................... 20

Cold junction compensation (CJC) ..................................................................................................................................20

Data linearization .............................................................................................................................................................20

Open-thermocouple detection (OTD) ..............................................................................................................................20

RTD and thermistor measurements .................................................................................................................. 21

Data linearization .............................................................................................................................................................21

External components ........................................................................................................................................ 21

Screw terminals................................................................................................................................................................21

USB connector .................................................................................................................................................................22

LED .................................................................................................................................................................................22

CompactFlash® memory card slot ....................................................................................................................................22

Data logging button .........................................................................................................................................................22

External power supply ...................................................................................................................................... 23

Disconnecting the 18200-80 from the computer .............................................................................................. 23

Transferring binary data after a logging session ............................................................................................... 23

Converting binary data after a logging session ................................................................................................. 23

Chapter 5

Specifications ...................................................................................................................................... 24

Analog input section ......................................................................................................................................... 24

Channel configurations ..................................................................................................................................... 25

Compatible sensors ........................................................................................................................................... 25

Accuracy ........................................................................................................................................................... 26

Thermocouple measurement accuracy .............................................................................................................................26

Semiconductor sensor measurement accuracy .................................................................................................................26

RTD measurement accuracy ............................................................................................................................................27

Thermistor measurement accuracy ..................................................................................................................................27

Throughput rate to PC ...................................................................................................................................... 28

Digital input/output........................................................................................................................................... 28

Temperature alarms .......................................................................................................................................... 29

Memory ............................................................................................................................................................ 29

Microcontroller ................................................................................................................................................. 29

Data Logging .................................................................................................................................................... 30

Real time clock ................................................................................................................................................. 31

USB +5V voltage ............................................................................................................................................. 31

Power ................................................................................................................................................................ 31

USB specifications ........................................................................................................................................... 31

Current excitation outputs (Ix+) ....................................................................................................................... 32

Environmental .................................................................................................................................................. 32

Mechanical ....................................................................................................................................................... 32

Screw terminal connector type and pin out....................................................................................................... 33

Screw terminal pin out .....................................................................................................................................................33

Declaration of Conformity .................................................................................................................. 34

4

Preface

About this Operating Manual

What you will learn from this manual

This manual explains how to install, configure, and use the 18200-80 so that you get the most out of its
temperature measurement and data logging features.

This manual also refers you to related documents available on our web site, and to technical support resources.

Conventions in this manual

For more information on …

Text presented in a box signifies additional information and helpful hints related to the subject matter you are
reading.

Caution! Shaded caution statements present information to help you avoid injuring yourself and others,

damaging your hardware, or losing your data.

< : > Angle brackets that enclose numbers separated by a colon signify a range of numbers, such as those assigned

to registers, bit settings, etc.

bold text Bold text is used for the names of objects on the screen, such as buttons, text boxes, and check boxes. For

example:

1. Insert the disk or CD and click the OK button.

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

example:
The InstaCal installation procedure is explained in the Quick Start Guide.
Never touch the exposed pins or circuit connections on the board.

Where to find more information

The following electronic documents provide helpful information relevant to the operation of the 18200-80.
 Cole-Parmer's Specifications: 18200-80 (the PDF version of the "Specifications" chapter in this guide) is

available on our web site at www.coleparmer.com/catalog/MoreInfo/18200-80-spec.pdf.

 Cole-Parmer's Quick Start Guide is available on our web site at

www.coleparmer.com/catalog/MoreInfo/CP-Quick-Start.pdf.

 Cole-Parmer's Guide to Signal Connections is available on our web site at

www.coleparmer.com/catalog/MoreInfo/CPsignals.pdf.

 Cole-Parmer's Universal Library User's Guide is available on our web site at

www.coleparmer.com/catalog/MoreInfo/sm-ul-user-guide.pdf.

 Cole-Parmer's Universal Library Function Reference is available on our web site at

www.coleparmer.com/catalog/MoreInfo/sm-ul-functions.pdf.

 Cole-Parmer's Universal Library for LabVIEW™ User’s Guide is available on our web site at

www.coleparmer.com/catalog/MoreInfo/SM-UL-LabVIEW.pdf.

18200-80 Operating Manual (this document) is also available on our web site at

www.coleparmer.com/catalog/manual_pdfs/18200-80.pdf.

5

Chapter 1

Introducing the 18200-80

Overview: 18200-80 features

This operating manual contains all of the information you need to connect the 18200-80 to your computer and
to the signals you want to measure.

The 18200-80 is a USB 2.0 full-speed, temperature measurement device that is supported under popular
Microsoft® Windows® operating systems. The 18200-80 is fully compatible with both USB 1.1 and USB 2.0
ports.

The 18200-80 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 software­programmable for input or output.

With the 18200-80, 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 18200-80 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 18200-80 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 18200-80 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 non­volatile storage device. A 512 MB CompactFlash memory card is shipped with the device to store your data.
For more information, refer to the section "Logging data with the 18200-80" on page 7.

External power is required for data logging operations

Due to processing limitations, data logging to the memory card is not allowed when the 18200-80 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 18200-80 is a standalone plug-and-play device. External power is required for data logging mode only. All
configurable options are software programmable. The 18200-80 is fully software calibrated.

6

18200-80 Operating Manual Introducing the 18200-80

24-bit A/D

(CH0, CH1)

Input
mux.

Input
mux.

CJC

CH0-3

±Ix

Precision

5V Ref.

24-bit A/D

(CH2, CH3)

±Ix

24-bit A/D

(CH4, CH5)

Input
mux.

Input
mux.

CJC

CH4-7

±Ix

24-bit A/D

(CH6, CH7)

±Ix

Screw TerminalScrew Terminal

Isolated

Micro

Temp

sensor

I/O

Isolator

500 V

Isolation

Barrier

SPI

Isolated

DC/DC

USB

+5V

(+12)

(-12)

8

DIO

Compact

Flash

connector

Battery-backed

Real-Time

Clock

USB 2.0

Microcontroller

USB
(PC)

Ext. Pwr.

(for data
logging)

USB

or

External power required

for data logging operations

Logging data with the 18200-80

The 18200-80 has many software-configurable options for setting up data logging.
You can record:

 temperature ( C) or raw data from selected input channels
 timestamp data
 CJC sensor readings

You can also 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.

18200-80 block diagram

18200-80 functions are illustrated in the block diagram shown here.

Software features

For information on the features of InstaCal and the other software included with your 18200-80, refer to the
Quick Start Guide that shipped with your device. The Quick Start Guide is also available in PDF at

www.coleparmer.com/catalog/MoreInfo/CP-Quick-Start.pdf.

Figure 1. 18200-80 functional block diagram

7

18200-80 Operating Manual Introducing the 18200-80

Connecting a 18200-80 to your computer is easy

Installing a data acquisition device has never been easier.
 The 18200-80 relies upon the Microsoft Human Interface Device (HID) class drivers. The HID class

drivers ship with every copy of Windows that is designed to work with USB ports. We use the Microsoft
HID because it is a standard, and its performance delivers full control and maximizes data transfer rates for
your 18200-80. No third-party device driver is required.

 In addition to using the HID class drivers, the 18200-80 also uses the Mass Storage Device interface to

allow the CompactFlash card adapter to appear as a storage device. This feature allows direct access to data
files stored on the 18200-80.

 The 18200-80 is plug-and-play. There are no jumpers to position, DIP switches to set, or interrupts to

configure.

 You can connect the 18200-80 before or after you install the software, and without powering down your

computer first. When you connect an HID to your system, your computer automatically detects it and
configures the necessary software. You can connect and power multiple HID peripherals to your system
using a USB hub.

 You can connect your system to various devices using a standard four-wire cable. The USB connector

replaces the serial and parallel port connectors with one standardized plug and port combination.

 You do not need a separate power supply device for normal operation. The USB automatically delivers the

electrical power required by each peripheral connected to your system. However, for data logging
operations, an external power supply is required.

 Data can flow two ways between a computer and peripheral over USB connections.

8

Installing the 18200-80

What comes with your 18200-80 shipment?

The following items are shipped with the 18200-80.

Hardware

 18200-80 with memory card

Chapter 2

 USB cable (2 meter length)

 External power supply – 2.5 watt USB adapter for data logging operations.

Additional documentation

In addition to this hardware manual, you should also receive the Quick Start Guide (available in PDF at

www.coleparmer.com/catalog/MoreInfo/CP-Quick-Start.pdf.). This booklet supplies a brief description of the

software you received with your 18200-80 and information regarding installation of that software. Please read
this booklet completely before installing any software or hardware.

9

18200-80 Operating Manual Installing the 18200-80

Unpacking the 18200-80

As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the 18200-80 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.

If your 18200-80 is damaged, notify Cole-Parmer immediately by phone, fax, or email.

 Phone: [phone].
 Fax: [phone]
 Email: [e-mail]

Installing the software

Refer to the Quick Start Guide for instructions on installing the software on the C-P Data Acquisition Software
CD. This booklet is available in PDF at www.coleparmer.com/catalog/MoreInfo/CP-Quick-Start.pdf.

Installing the hardware

To connect the 18200-80 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 18200-80.

Caution! If you are connecting the 18200-80 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 18200-80 for the first time, a Found New Hardware popup balloon (Windows XP) or
dialog (other Windows versions) opens as the 18200-80 is detected.

When this balloon or dialog closes, the installation is complete. The LED on the side of the device should flash
and then remain lit. This indicates that communication is established between the 18200-80 and your computer.

Firmware revision 3.0 and later

The 18200-80 installs as a composite device with separate devices attached. When you connect the 18200-80
for the first time, Found New Hardware popup balloons (Windows XP) or dialogs (other Windows version)
open as each 18200-80 interface is detected.

It is normal for multiple dialogs to open when you connect the 18200-80 for the first time. For additional
information, refer to the "Notes on installing and using the 18200-75 and 18200-80 data logging devices" that
was shipped with the 18200-80.

When the last balloon or dialog closes, the installation is complete. The LED on the 18200-80 should flash and
then remain lit. This indicates that communication is established between the 18200-80 and your computer.

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

18200-80, or you may lose data and/or your ability to communicate with the 18200-80.

If the LED turns off

If the LED is lit but then turns off, the computer has lost communication with the 18200-80. 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.

10

18200-80 Operating Manual Installing the 18200-80

Configuring the 18200-80

All hardware configuration options on the 18200-80 are programmable with software. Use InstaCal to set the
sensor type for each channel.

The configurable options dynamically update according to the selected sensor category. Configuration options
are stored on the 18200-80 's isolated microcontroller in EEPROM, which is non-volatile memory on the
18200-80 device. Configuration options 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 18200-80 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 InstaCal.

 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 18200-80 in non-volatile memory in EEPROM, and are loaded on
power up.

Calibrating the 18200-80

The 18200-80 is fully calibrated with InstaCal. Calibration coefficients are stored in EEPROM. InstaCal
prompts you to run its calibration utility when you change from one sensor category to another.

Allow the 18200-80 to operate for at least 30 minutes before calibrating. This warm up time minimizes thermal
drift and achieves the specified rated accuracy of measurements.

11