Omega Products USB-4711A Installation Manual

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User’s Guide

USB-4711A

150 kS/s, 12-Bit Multifunction

USB Data Acquisition Module

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WARNING: These products are not designed for use in, and should not be used for, human applications.

USB-4711A

150 kS/s, 12-bit,
Multifunction USB
Data Acquisition
Module

User Manual

Contents

Chapter 1 Introduction ..................................................... 2

1.1 Features ............................................................................. 2

1.2 Software Overview............................................................ 3

1.2.1 More on the CD ....................... ................. ..................... 3

Chapter 2 Installation ....................................................... 6

2.1 Unpacking ......................................................................... 6

2.2 Driver Installation ............................................................. 7

2.3 Hardware Installation ........................................................ 9

2.4 Hardware Uninstallation ................................................... 9

Figure 2.1:Unplug or Eject Hardware Dialog .............. 10

Figure 2.2:Stop a Hardware device dialog box ............ 10

Chapter 3 Signal Connections ........................................ 12

3.1 Overview ......................................................................... 12

3.2 I/O Connectors ................................................................ 12

3.2.1 Pin Assignment ............................................................ 12

Figure 3.1:I/O Connector Pin Assignment .................. 13

3.2.2 I/O Connector Signal Description ................................ 14

Table 3.1:I/O Connector Signal Description ............... 14

3.2.3 LED Indicator Status Descript ion ................................ 15

Table 3.2:LED Indicator Status Description ................ 15

3.3 Analog Input Connections............................................... 16

3.3.1 Single-ended Channel Connectio ns ............................. 16

Figure 3.2:Single-Ended Input Ch a n nel Connection ... 16

3.3.2 Differential Input Connections .................................... 17

Figure 3.3:Differential Input Channel Connection ...... 17

3.4 Analog Output Connections (Voltage)............................ 18

Figure 3.4:Analog Output Chann e l Connections ......... 18

3.5 Trigger Source Connections............................................ 18

3.5.1 Internal Pacer Trigger Connection ............................... 18

3.5.2 External Trigger Source Connection ........................... 18

3.6 Field Wiring Considerations ........................................... 19

Appendix A Specifications ................................................. 22

A.1 Analog Input.................................................................... 22

A.2 Analog Output ................................................................. 22

A.3 Non-Isolated Digital Input/Output .................................. 23

A.4 Event/Frequency Input .................................................... 23

A.5 Pulse Output .................................................................... 23

A.6 General ............................................................................ 23

v Table of Contents

USB-4711A User Manual vi

1

2

Introduction

This chapter will provide information
on the features of the
quick start
some brief information on software and
accessories for USB-4711A
Sections include:

• Features

• Software Overview

DAS module, a

guide for installation, and

Module.

Chapter 1 Introduction

Thank you for buying the USB-4711A data acquisition module. The
USB-4711A is a powerful data acquisition (DAS) module for the USB
port. It features a unique
acquisition and control.

circuit design and complete functions for data

1.1 Features

USB-4711A has the most requested measurement & control functions:

• 16 single-ended/ 8 differential or combination analog input channels

• 12-bit resolution A/D converter, with up to 150 kS/s sampling rate

• 8 digital input & 8 digital output channels (TTL Level)

• 2 analog output channels

• 16-bit programmable counter/timer x 1

• Pulse output channel x 1

• Programmable gain for each analog input channel

• Automatic channel/gain scanning

• Onboard 1K samples FIFO buffer for AI channels

• Bus-powered

• Device status LED indicator

• Removable on-module wiring terminal

• Supports high-speed USB 2.0

• Auto calibration function

• Hot swappable

Note: The USB chip on your system may have a limitation on

the number of
only five

USB-4711A devices can be supported.

Note: The power output of an USB port is 500 mA, while the

USB-4711A requires 360 mA (typical). This means that
if an USB hub is
supply to

support more than one USB-4711A device.

USB-4711A User Manual 2

USB devices it will support. Normally,

used, it will need an external power

1.2 Software Overview

Omega offers a rich set of DLL drivers, third-party driver support and
application software
functions
function library to help boost your application performance and work
seamlessly with development tools such as Visual C++, Visual

of your device. The Device Drivers feature a complete I/O

1.2.1 More on the CD

For instructions on how to begin programming in each development tool,
some tutorial chapters are included in the Device Drivers Manual
reference. Please
the Device
also look at
since they can

The Device Drivers Manual can be found on the companion CD-ROM.
Alternatively, if
system, The
Start button:

Start/Programs/Omega USB-4700 Series/ Device Driver’s Manual

After you install the examples, the example source code can be found
under the corresponding
path:

Pr o g r a m F i l e s /Omega/USB-4700/Examples

Drivers Manual to begin your programming efforts. You can

the example source code provided for each programming tool,

on the companion CD-ROM to help fully exploit the

refer to the corresponding sections in these chapters on

get you very well oriented.

you have already installed the Device Drivers on your

Device Drivers Manual can be readily accessed through the

installation folder such as the default installation

3 Chapter 1

Basic.

for your

USB-4711A User Manual 4

2

2

Installation

Sections include:

• Unpacking

• Driver Installation

• Hardware Installation

• Hardware Uninstallation

Chapter 2 Installation

2.1 Unpacking

After receiving your USB-4711A package, please inspect its contents
first. The package

• USB-4711A M odule

• Shielded USB 2.0 Cable (1.8 m)

• Companion CD-ROM (DLL driver included)

The USB-4711A Module harbors certain electronic components vulnera­ble to

electrostatic discharge (ESD). ESD could easily damage the inte-

grated circuits and
carefully paid attention

static plastic bag, you
possible ESD

• Touch the metal part of your computer chassis with your hand to dis­static electricity accumulated on your body. One can also use a

charge
grounding strap.

• Make contact between the antistatic bag and ground before opening.

After taking out the module, you should first:

Inspect the module for any possible signs of external damage (loose or
damaged components,
notify

our service department or our local sales representative immedi-

ately. Avoid using

• Avoid physical contact with materials that could hold static

electricity such

USB-4711A User Manual 6

should contain the following items:

certain components if preventive measures are not

to. Before removing the module from the anti-

should take following precautions to ward off

damage:

etc.). If the module is visibly damaged, please

a damaged module with your system.

as

plastic, vinyl and Styrofoam.

2.2 Driver Installation

We recommend you install the software driver before you install the
USB-4711A module
installation process.

The 32-bit DLL driver Setup program for the USB-4711A module is
included
package. Please
driver software:

on

the companion CD-ROM that is shipped with your module

into your system, since this will guarantee a smooth

follow the steps on the following page to install the

7 Chapter 2

For further information on driver-related issues, an online version of the
Device Drivers Manual is

available by accessing the following path:

Start/Programs/Omega USB-4700 Series/ Device Driver’s Manual

USB-4711A User Manual 8

2.3 Hardware Installation

Note: Make sure you have insta lle d th e so ftware driver

before you install
Section 2.2 Driver Installation )

the module (please refer to

After the DLL driver installation is completed, you can now go on to
install

the USB-4711A module in any USB port that supports the
USB 1.1/2.0 standard , on your comp uter . Please follow the steps below to
install the module on your system.

Step 1: Touch the metal part on the surface of your computer to neutralize

the static electricity that

might be in your body.

Step 2: Plug your USB module into the selected USB port. Use of exces-

sive

force must be avoided; otherwise the module might get damaged.

Note:

In case you installed the module without installing

the DLL driver , Win 200 0/XP will
module as an

“unknown device”. After reboot, it will
prompt you t o provid e neces sary
ignore the promp ting messages
driver according

to the steps describe d in Sec.2 .2.

recognize your

driver . Y o u shoul d

and set up the

After your module is installed, you can configure it using the Device
Manager. The Device Driver's

Manual can be found at:

Start/Programs/Omega USB-4700 Series/ Device Driver’s Manual

2.4 Hardware Uninstallation

Though the USB modules are hot swappable, we still recommend you to
follow the hardware un-installation
damages

Step1:
Step2:

to your device or your system.
Close the applications of the USB module.
Right click the “Unplug or Eject Hardware” icon on your task bar.

procedure to avoid any unpredictable

9 Chapter 2

Figure 2.1: Unplug or Eject Hardware Dialog

Step3:

Select “USB-4711A Device” and press “Stop” Button.

Figure 2.2: Stop a Hardware device dialog box

Step4:

Unplug your USB device from the USB port.

Note: Please make sur e that you have closed the application

before unpluggin g
pected

system error or damage may occur.

the USB device, otherwise unex -

USB-4711A User Manual 10

3

2

Signal Connections

This chapter provides useful informa­tion on how to connect input and output
signals to the
connectors.

Sections include:

• Overview

• I/O Connectors

• Analog Input Connections

• Analog Output Connections

• Trigger Source Connections

• Field Wiring Considerations

USB-4711A via the I/O

Chapter 3 Signal Connections

3.1 Overview

Maintaining good signal connections is one of the most important factors
in ensuring that your application
correctly. A good signal
damage to your PC

connection can avoid unnecessary and costly

and other hardware devices.

system is sending and receiving data

3.2 I/O Connectors

USB-4711A is equipp ed with plug-in screw-terminal connectors that
facilitate connection to the module

3.2.1 Pin Assignment

Figure 3.1 on next page shows the pin assignments for the five 10-pin I/O
connectors on USB-4711A.

Warning:

The two ground references AGND and DGND

should

be used separately f or their d esignated

purpose. Do not conn ect t he m together .

without terminal boards or cables.

USB-4711A User Manual 12

Figure 3.1: I/O Connector Pin Assignment

13 Chapter 3

3.2.2 I/O Connector Signal Description

Table 3.1: I/O Connector Signal Description

Signal
Name

AI<0…15> AGND Input Analog Input Channels 0

AIGND - - Analog Input Ground.
AO0

AO1
AOGND - - Analog Output Ground. The

DI<0..7> DGND Input Digital Input channels.
DO<0..7> DGND Output Di gital Output channel s.
DGND - - Digital Ground. This pin supplies

GATE DGND Input A/D External Trigger Gate.

EXT _TRG DGND Input A/D External Trigger. This pin is

EVT_IN DGND Input External events input channel.

Reference Direction Description

AGND Output Analog Output Channels 0/1.

through 15.

analog output voltages are ref­erenced to these nodes.

the reference for the d igital
channels at the I/O connector.

When GATE is connected to +5
V, it will disable the
external trigger signal to
input.

external trigger signal input for
the A/D conversion. A low-to­high edge triggers A/D conver­sion to start.

P_OUT DGND Output Pulse output channel

USB-4711A User Manual 14

3.2.3 LED Indicator Status Description

The USB Module is equipped with a LED indicator to show the current
status

of

the device. When you plug the USB device into the USB port,
the LED indicator will blink five times and then stay lit to indicate that it
is on.

Please refer to the following table for detailed LED indicator status

information.

Table 3.2: LED Indicator St atus Descriptio n

LED Status Description
On Device ready for work

Off Device not ready to work
Slow Blinking (5 times) Device initialization
Fast Blinking

(Depends on data transfer speed).

Device working

15 Chapter 3

3.3 Analog Input Connections

USB-4711A supports 16 single-ended/ 8 differential (or combination)

USB-4711A supports 16 single-ended/ 8 differential (or combination)
analog inputs. Each individual input channel is software-selected.

analog inputs. Each individual input channel is software-selected.

3.3.1 Single-ended Channel Connections

3.3.1 Single-ended Channel Connections

The single-ended input configuration has only one signal wire for each

The single-ended input configuration has only one signal wire for each
channel, and the

channel, and the
erenced against the common

erenced against the common
A signal source without a local ground is also called a “floating source”.

A signal source without a local ground is also called a “floating source”.
It is fairly simple to

It is fairly simple to
source. In this

source. In this
nal floating signal

nal floating signal
Figure 3.2 shows a single-ended channel connection between a floating

Figure 3.2 shows a single-ended channel connection between a floating
signal source

signal source

measured voltage (Vm) is the voltage of the wire as ref-

measured voltage (Vm) is the voltage of the wire as ref-

ground.

ground.

connect a single-ended channel to a floating signal

connect a single-ended channel to a floating signal

mode, USB-4711A provides a reference ground for exter-

mode, USB-4711A provides a reference ground for exter-

sources.

sources.

and an input channel on USB-4711A.

and an input channel on USB-4711A.

Figure 3.2: Single-Ended Input Channel Con nect ion

USB-4711A User Manual 16

3.3.2 Differential Input Connections

The differential input channels operate with two signal wires for each
channel, and the

voltage difference between both signal wires is mea­sured. On USB-4711A, when all channels are configured to differential
input, up to

8

analog channels are available.

If one side of the signal source is connected to a local ground, the signal
source is ground-referenced. Therefore, the
and the ground
difference between
(V

cm

).

of the card will not be exactly of the same voltage. The

the ground voltages forms a commonmode voltage

ground of the signal source

T o avoid the ground loop noise effect caused by common-mode voltages,
you can connect the signal
differential

channel connection between a grounded-reference signal
source and an input channel on USB-4711A. With
PGIA rejects a common-mode voltage V
USB-4711A ground, shown as V

ground to the Low input. Figure 3-3 shows a

this connection, the

cm

between the signal source and

cm

in Figure 3-3.

Note:

channel

(n=0,2,4…14)

In differential input mode, the input channel n

n+1.

should be used with

Figure 3.3: Differential Input Channel Connection

17 Chapter 3

3.4 Analog Output Connections (Volt age)

USB-4711A provides two analog output channels, AO0 and AO1. Figure

USB-4711A provides two analog output channels, AO0 and AO1. Figure
3-3 shows how to make analog output connections on USB-4711A.

3-3 shows how to make analog output connections on USB-4711A.

Figure 3.4: Analog Output Channel Connections

3.5 Trigger Source Connections

3.5.1 Internal Pacer Trigger Connection

USB-4711A provides two 16-bit counters connected to a 10 MHz clock.
Counter 0 is a counter

that counts events from an input channel. Counter
1 is a 16-bit timer for pacer triggering. A low-to-high edge from the
Counter 1 output will trigger an A/D conversion on USB-4711A.

3.5.2 External Trigger Source Connection

In addition to pacer triggering, USB-4711A also allows external trigger­ing for A/D
the external trigger function
function

conversions. When GATE is connected to a +5V DC source,

is

thereby disabled. And the external trigger

will be enabled once the +5V DC source is removed.

USB-4711A User Manual 18

3.6 Field Wiring Considerations

• When you use USB-4711A to acquire data from outside, noises in the

environment might
ments

if due cautions are not taken. The following measures will be
helpful to
signal sources and

• The signal cables must be kept away from strong electromagnetic
sources such as
welding machines,
ference. Keep the
since it can significantly

• If the cable travels through an area with significant electromagnetic
interference, you should
as the analog input cable.
together and
be

• Avoid running the signal cables through any conduit that might have
power

• If you have to place your signal cable parallel to a power line that has a
high
tance
power line

reduce possible interference running signal wires between

connected to one point at the signal source ground.

lines in it.

voltage or high current running through it, try to keep a safe dis-

between them. Or place the signal cable in a right angle to the

to minimize the undesirable effect.

significantly affect the accuracy of your measure-

the USB-4711A.

power lines, large electric motors, circuit breakers or

since they may cause strong electromagnetic inter-

analog signal cables away from any video monitor,

affect a data acquisition system.

adopt individually shielded, twisted-pair wires

This type of cable has its signal wires twisted

shielded with a metal mesh. The metal mesh should only

19 Chapter 3

USB-4711A User Manual 20

A

2

Specifications

Appendix A Specifications

A.1 Analog Input

Channels
Resolution

Sampling
Rate

Input Range and
Gain List

Drift

Small Signal
Bandwidth for
PGA

Common Mode
Voltage

Accuracy

A.2 Analog Output

Channels
Resolution

Throughput
Operating Mode
Output Range 0~5, 0~10, ±5, ±10V

Accuracy

Dynamic
Performance

Driving Capability
Output

Impendence

USB-4711A User Manual 22

16-ch Single-ended/ 8-ch differential
12bits FIFO Size 102 4 samples

150kS/s

Gain 0.5 1 2 4 8
Gain Code 4 0 1 2 3
Unipolar -- -- -- -- -­Bipolar ±10 ±5 ±2.5 ±1.25 ±0.625

Gain 0.5 1 2 4 8

Zero( μV/℃)
Gain(ppm/℃)
Gain 0.5 1 2 4 8
Bandwidth
(MHz)

±11V (Oper at ion al) Input 3 0V Input 1GW

DC Gain 0.5 1 2 4 8

INLE(LSB) 1 1 1 1 2
DNLE(LSB) 1 1 1 1 1
Gain Error
(%FSR)

AC SINAD 68dB THD -88dB ENOB 11bits

2
12 bits FIFO Size N/A

2k Hz
Single output

DC INLE ±1LSB

Slew Rate
Settling Time

5mA

0.1 Ω max.

±30

30 30 30 30 30

1.1 1.1 1.1 1.1 1.1

Protect max. Impendence

0.1 0.1 0.2 0.2 0.4

DNLE ±1LSB

0.125V/ μs
150 μ S (to ± 1/2 LSB of FSB)

A.3 Non-Isolated Digital Input/Output

Input Channels

Input Voltage

Output channels
Output Voltage

8 Non-Isolated TTL

Low 0.0 Vdc (min)/ 1.0Vdc (max.)
High 2.0 Vdc (min)/ 5.0Vdc (max.)

8 Non-Isolated TTL
Low 0.4Vdc/ -6mA (Sink)

High 2.4 Vdc/ 6mA (Source)

A.4 Event/Frequency Input

Channel
VIH

VIL
Input BW

1 ( Event Or Frequency )

2.0Vdc (Min) / 5.0Vdc (Max)

0.0Vdc (Min) / 1.0Vdc (Max)
In SW AI Mode : ( +/- 0.05% Of FR In Frequency Cal. )

Event/Frequency Input : 0.1 Hz ~ 10K Hz (Max)

In FAI Mode : ( +/- 0.05% Of FR In Frequency Cal. )

Event/Frequency Input : 0.1 Hz ~ 1K Hz (Max)
( For Maintain AI Performance )

A.5 Pulse Output

Channel
VIH
VIL
Output Frequency Range

A.6 General

I/O Connector
Type

Dimensions
Power

Consumption
Temperature

Relative
Humidity

Detachable 10-pin screw terminal * 5

132 x 80 x 32mm (5.2” x 3.2” x 1.3”)

360mA @ +5.0V typical; 450mA @ +5.0V max.

Operation 0~60° C (32~140° F) (refer to IEC 68-2-1,2)

Storage -20~70° C (-4~158° F)
5~95% RH non-condensing (refer to IEC 68-2-1,2)

1 ( Non-Isolation T TL )

2.4Vdc / 6mA (Source)

0.4Vdc / -6mA (Sink)
2 Hz ~ 10K Hz ( +/- 0.05% Of FSR )

23 Appendix A

USB-4711A User Manual 24

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and
workmanship for a period of 13 months from date of purchase. OMEGA’s WARRANTY adds an
additional one (1) month grace period to the normal one (1) year product warranty to cover
handling and shipping time. This ensures that OMEGA’s customers receive maximum
coverage on each product.

If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer
Service Department will issue an Authorized Return (AR) number immediately upon phone or
written request. Upon examination by OMEGA, if the unit is found to be defective, it will be
repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting
from any action of the purchaser, including but not limited to mishandling, improper interfacing,
operation outside of design limits, improper repair, or unauthorized modification. This
WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence
of having been damaged as a result of excessive corrosion; or current, heat, moisture or vibra­tion; improper specification; misapplication; misuse or other operating conditions outside of
OMEGA’s control. Components in which wear is not warranted, include but are not limited to
contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However,
OMEGA neither assumes responsibility for any omissions or errors nor assumes liability
for any damages that result from the use of its products in accordance with information
provided by OMEGA, either verbal or written. OMEGA warrants only that the parts
manufactured by the company will be as specified and free of defects. OMEGA MAKES
NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER,
EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES
INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of pur­chaser set forth herein are exclusive, and the total liability of OMEGA with respect to this
order, whether based on contract, warranty, negligence, indemnification, strict liability or
otherwise, shall not exceed the purchase price of the component upon which liability is
based. In no event shall OMEGA be liable for consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as
a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity;
or (2) in medical applications or used on humans. Should any Product(s) be used in or with any
nuclear installation or activity, medical application, used on humans, or misused in any way,
OMEGA assumes no responsibility as set forth in our basic WARRANTY/ DISCLAIMER language,
and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability
or damage whatsoever arising out of the use of the Product(s) in such a manner.

RETURN REQUESTS/INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department.
BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN
AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT
(IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be
marked on the outside of the return package and on any correspondence.

The purchaser is responsible for shipping charges, freight, insurance and proper packaging to
prevent breakage in transit.

FOR WARRANTY

RETURNS, please have
the following information available BEFORE
contacting OMEGA:

1. Purchase Order number under which

the product was PURCHASED,

2. Model and serial number of the product

under warranty, and

3. Repair instructions and/or specific

problems relative to the product.

FOR NON-WARRANTY REPAIRS,

consult
OMEGA for current repair charges. Have the
following information available BEFORE
contacting OMEGA:

1. Purchase Order number to cover the COST

of the repair,

2. Model and serial number of the product, and

3. Repair instructions and/or specific problems

relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible.
This affords our customers the latest in technology and engineering.

OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2007 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,

reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without
the prior written consent of OMEGA ENGINEERING, INC.

Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGA…Of Course!

Shop online at omega.com

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䡺⻬

Communications-Based Acquisition Systems

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Plug-in Cards for Apple, IBM & Compatibles

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Datalogging Systems

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Recorders, Printers & Plotters

HEATERS

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Heating Cable

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Cartridge & Strip Heaters

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Immersion & Band Heaters

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Flexible Heaters

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Laboratory Heaters

ENVIRONMENTAL
MONITORING AND CONTROL

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Metering & Control Instrumentation

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Refractometers

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Pumps & Tubing

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Air, Soil & Water Monitors

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Industrial Water & Wastewater Treatment

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pH, Conductivity & Dissolved Oxygen Instruments

M4571/0907