USB-5200 Series
USB-5200 Series
24-Bit Stand-Alone Temperature Data Loggers
Features
• 24-bit temperature data loggers with
8 differential channels
• Measures thermocouples, RTDs,
thermistors, or semiconductors
• Internal measurement electronics
accuracy exceeds accuracy
specifications of supported
temperature sensors
• Supports 512 MB, 1 GB, and 2 GB
CompactFlash® memory cards
• 8 digital I/O for software-selectable
high/low alarms
• Convert data to .csv or .txt format
• Includes a 512 MB memory
card (collects up to 128 million
measurements), USB power adapter,
and software CD
Software
Supported Operating Systems
• Windows® 8/7/Vista® 32/64-bit
Ready-to-Run Applications
• InstaCal™ (install, configure, and
test)
• DAQami™* (acquire, view, and log)
available for purchase
• TracerDAQ®* (acquire, view, log,
and generate)
Supported Programming Environments
• Visual Studio® and Visual Studio
.NET, including examples for Visual
C++®, Visual C#®, Visual Basic®,
and Visual Basic .NET, and other
IDEs
• LabVIEW*
• DASYLab®*
The USB-5200 Series offers 24-bit resolution on eight thermocouple inputs.
The USB-5203 (shown above) also measures temperature from RTD, thermistor, and semiconductor sensor inputs.
USB-5200 Series Selection Chart
Model
Channels
Thermocouple
Inputs
RTD, Thermistor,
Semiconductor
Sensor Inputs
Stand-Alone Logging
to CF Card
USB-5201
8
4
—
4
USB-5203
8
4
4
4
The inputs are configured to run continuously at 2 S/s. The maximum latency
between when a sample is acquired and
when the temperature data is provided
by the USB unit is approximately 0.5
seconds.
Both devices can be configured to log
the following types of data:
USB-5200 Series devices provide the
most accurate temperature measurement possible because the accuracy of
their internal measurement electronics
exceeds the accuracy specifications of
the temperature sensors.
• CJC sensor readings
* Supports USB-to-PC connection only
Overview
The USB-5200 Series provides temperature measurement flexibility and convenience in devices that can be moved
and installed anywhere temperature
measurements are needed, without the
need for a dedicated host computer.
Temperature Input
USB-5200 Series devices offer eight thermocouple inputs. The USB-5203 also
supports RTD, thermistor, and semiconductor sensors.
Measurement Computing
Data Logging
USB-5200 Series devices can store temperature data on the included Compact
Flash (CF) card. The data can be read
from a CF reader or by connecting the
device directly to a USB port on a PC.
(508) 946-5100
1
• Temperature (°C) or raw data from
selected input channels
• Timestamp data
Users can set the number of seconds
between samples, and control when
logging begins – at power up, when the
logging button is pressed, or at a specific
date and time.
Logged data is stored on the memory
card in binary files and then can be
transferred to the computer. Use
InstaCal to convert the files to .csv format for use in Microsoft® Excel® files,
or to .txt format for use in other applications.
[email protected]
mccdaq.com
USB-5200 Series
General Information
USB-5200 Series Block Diagram
Precision
5V Ref.
External power required
for data logging operations
DIO
USB
(PC)
24-bit A/D
(CH0, CH1)
8
or
Input
Input
mux
mux
±Ix (USB-5203 only)
Battery-backed
Real-Time
Clock
I/O
Isolator
USB
Microcontroller
Isolated
Micro
SPI
24-bit A/D
(CH2, CH3)
CJC
CJC
CH0-3
CH0-3
Temp
sensor
Isolated
DC/DC
USB+5V
Input
Input
mux
mux
(+12)
±Ix (USB-5203 only)
(-12)
24-bit A/D
(CH4, CH5)
Input
mux
±Ix (USB-5203 only)
500 V
Isolation
Barrier
24-bit A/D
(CH6, CH7)
Input
mux
Screw Terminals
Compact
Flash
connector
Screw Terminals
±Ix (USB-5203 only)
Ext. Pwr.
(for data
logging)
CJC
CJC
CH4-7
CH4-7
Configuring a Device for Logging with
InstaCal
Sensor Category
Settings
Connection Types: – Select 2-wire
(1-sensor), 2-wire (2-sensors), 3-wire, or
4-wire.
After you connect and install a USB-5200 Series device and
add the device to the InstaCal configuration, right-click on the
device in the InstaCal window and select Configure from the
context menu to open the Board Configuration dialog box.
RTD
(USB-5203 only)
The Board Configuration dialog box includes four tabs for
configuring sensor settings for each differential channel pair,
and a Data Logger tab for configuring logging and alarm settings.
Click Show Connections to display a
diagram of the selected connection type.
Callendar-Van Dusen Coefficients –
Configure these settings for each connected sensor.
Connection Types – Select 2-wire
(1-sensor), 2-wire (2-sensors), 3-wire, or
4-wire.
Thermistor
(USB-5203 only)
Steinhart-Hart Coefficients – Configure
these settings for each connected sensor.
Channel pair tabs and the Sensor Category list on the Board Configuration dialog box in InstaCal.
Thermocouple
Configuring Differential Channel Pairs
For each channel pair, select the type of connected sensor
from the Sensor Category list, and configure the available settings for the selected sensor.
Semiconductor
(USB-5203 only)
Disabled
Measurement Computing
(508) 946-5100
Click Show Connections to display a
diagram of the selected connection type.
2
Thermocouple – Select type J, K, R, S, T,
N, E, or B.
Coefficients – Configure these settings
for the offset voltage, scale (V/°C), and
sensor type.
The channel pair is not used in the
acquisition.
[email protected]
mccdaq.com
USB-5200 Series
General Information
Calculating the Logging Time for a Memory
Card
Configuring Data Logger Settings
Click on the Data Logger tab to configure settings on the Logger Data, Logger Setup, and Alarm Setup tabs.
Tab
The following formula calculates the approximate amount of
logging time in seconds that one of the supported memory
cards allows. USB-5200 Series devices support 512 MB, 1 GB,
and 2 GB CompactFlash memory cards.
Settings
Preferences – Select the Time Format, Time
Zone used for timestamps, and the Temperature Units used for logged data.
Logger
Data
Storage – Displays the total amount and free
amount of memory on the CF card.
where:
• time = total disk time in seconds
• NDIO = 1 byte for digital I/O
• nChannels = number of channels logged
• R = logging rate in seconds
• NTS = 6 bytes for timestamp, if enabled
Starting file number – Number to append to
the next log file name.
Mode – Select a following logging mode:
• NTemp = 4 bytes for a temperature reading (always
enabled)
• Logging Off – Logging is disabled
• NCJC = 8 bytes if CJC sensor readings are enabled
• Start Logging on Power Up – Start logging
5 seconds after power on to allow hardware
to settle.
For example, if logging from one channel to a 512 MB card
with all logging options selected, the calculation is as follows:
• Start Logging on Button – Manually start
logging by pressing the logging button to
the right of the CF card slot.
• NDisk = 512,000,000 bytes (512 MB)
• NDIO = 1
• Start Logging at Specified Time – Start logging based on the time entered in the date
and time fields.
• nChannels = 1
• R = 1 S/s
Channel Selection and Format – Select each
channel to log and whether data is logged in as
temperature value or raw value.
• NTS = 6 (timestamp enabled)
• NTemp = 4 (temperature readings)
• NCJC = 8 (CJC sensor readings enabled)
Configure up to eight independent temperature alarms using the settings on the Alarm 0
through Alarm 7 tabs. Each tab corresponds
to a digital I/O bit (0 - 7). When an alarm is
activated, the associated DIO channel is driven
to the output state.
Alarm
Setup
NTS + NDIO + (NTemp × nChannels) + NCJC
• NDisk = size of memory card in bytes
Settings – Select whether to log CJC Readings
and Timestamps with temperature readings.
Interval – Number of seconds between each
logged sample.
Logger
Setup
NDisk
time = R ×
Files – Displays the binary files containing
logged data. Use to convert, copy, or delete files.
Inserting these values into the formula creates the following
equation:
time = 1 ×
Enable Alarm – Select this checkbox to enable
the alarm.
512,000,000
6 + 1 + (4 × 1) + 8
= 26947368 seconds = 311.9 days
Changing the number of channels logged from 1 to 8 in the
above formula (nChannels = 8) yields the following equation:
Input Channel – Select the temperature channel used as the alarm input.
time = 1 ×
Output Type – Select Active High or Active
Low as the alarm output.
512,000,000
6 + 1 + (4 × 8) + 8
= 10893617 seconds = 126 days
Threshold – Select one of the temperature
threshold conditions that activates the alarm.
Saving Data Logger Configurations
Users can save a configuration or load an existing one.
Measurement Computing
(508) 946-5100
3
[email protected]
mccdaq.com
USB-5200 Series
General Information
Thermocouple Measurements
Open-Thermocouple Detection
USB-5200 Series devices are equipped with an open-thermocouple detection (OTD) for each analog input channel. With
OTD, any open-circuit or short-circuit condition at the thermocouple sensor is detected by the software. An open channel
is detected by driving the input voltage to a negative value
outside the range of any thermocouple output. The software
recognizes this as an invalid reading and flags the appropriate
channel. The software continues to sample all channels when
OTD is detected.
USB-5200 Series devices make fully-differential thermocouple
measurements without the need of ground-referencing resistors. A 32-bit floating point value in either a voltage or temperature format is returned by software. An open thermocouple detection feature is available for each analog input which
automatically detects an open or broken thermocouple.
A thermocouple is created by joining two dissimilar metals.
The junction produces a small voltage as a function of the
temperature. Supported thermocouple types – J, K, R, S, T, N,
E, or B) – are software-selectable on each input channel.
Input Leakage Current
With OTD enabled, up to 105 nA of input leakage current
is injected into the thermocouple. This current can cause
an error voltage to develop across the lead resistance of the
thermocouple that is indistinguishable from the thermocouple
voltage being measured.
USB-5200 Series devices apply 2.5 V to the low side of the
thermocouple input, which level-shifts the thermocouple output voltage into the A/D common mode input range.
Cold-Junction Compensation (CJC)
Use the following formula to estimate this error voltage:
When the thermocouple sensor leads are connected to the
sensor input channel, the dissimilar metals at the terminal
blocks produce an additional thermocouple junction. This
junction creates a small voltage error term which must be
removed from the overall sensor measurement using a cold
junction compensation technique. The measured voltage
includes both the thermocouple voltage and the cold junction
voltage. To compensate for the additional cold junction voltage, the USB-5203 subtracts the cold junction voltage from the
thermocouple voltage.
error voltage = thermocouple resistance × 105 nA
To reduce the error, reduce the length of the thermocouple to
lower its resistance, or lower the AWG of the wire by using a
wire with a larger diameter. With open-thermocouple detection disabled, 30 nA (max) of input leakage current is injected
into the thermocouple.
RTD and Thermistor
Measurements (USB-5203 Only)
USB-5200 Series devices have two high-resolution temperature
sensors integrated into their design. One sensor is located on
the right side of the package, and the other sensor is located at
the left side. The CJC sensors measure the average temperature
at the terminal blocks so that the cold junction voltage can be
calculated.
A resistance temperature detector (RTD) measures temperature by correlating the resistance of the RTD element with
temperature. A thermistor is a thermally-sensitive resistor that
is similar to an RTD in that its resistance changes with temperature – thermistors show a large change in resistance that
is proportional to a small change in temperature. RTDs and
thermistors are resistive devices requiring an excitation current
to produce a voltage drop that can be measured differentially
across the sensor.
A software algorithm automatically corrects for the additional
thermocouples created at the terminal blocks by subtracting
the calculated cold junction voltage from the thermocouple
voltage measurement.
The USB-5203 has four built-in current excitation sources (±I1
to ±I4) for measuring resistive-type sensors. Each current excitation terminal is dedicated to one channel pair. The device
measures the sensor resistance by forcing a known excitation
current through the sensor and then measuring (differentially) the voltage across the sensor to determine its resistance.
After the device measures the voltage, it calculates the RTD
resistance using Ohm's law – divide the measured voltage by
the current excitation level (±Ix) source. The value of the ±Ix
source is stored in local memory.
Data Linearization
After the CJC correction is performed on the measurement
data, an onboard microcontroller automatically linearizes the
thermocouple measurement data using National Institute of
Standards and Technology linearization coefficients for the
selected thermocouple type.
The measurement data is then output as a 32-bit floating
point value in the configured format (voltage or temperature).
• In RTD mode, the USB-5203 can measure resistance values
up to 660 Ω. This limit includes the total resistance across
the current excitation (±Ix) pins, which is the sum of the
RTD resistance and the lead resistances.
Measurement Computing
(508) 946-5100
4
[email protected]
mccdaq.com
USB-5200 Series
General Information
Two-Wire, Two-Sensor
With a two-wire, two-sensor configuration, connections to
C#H (first sensor) and C#H/C#L (second sensor) are made
internally.
• In thermistor mode, the USB-5203 can measure resistance
values up to 180 kΩ. The 180 kΩ resistance limit includes
the total resistance across the current excitation (±Ix) pins,
which is the sum of the thermistor resistance and the lead
resistance.
When configured for two-wire mode, both sensors must be
connected to obtain proper measurements.
Data Linearization
Once the resistance value is calculated, an onboard microcontroller automatically performs linearization on RTD and
thermistor measurements to convert them to a temperature
value. The measurement is returned by software as a 32-bit
floating point value in a voltage, resistance, or temperature
format. The main difference between RTD and thermistor
measurements is the method used to linearize the sensor data.
RTD measurements are linearized using a Callendar-Van
Dusen coefficients algorithm (select DIN, SAMA, or ITS-90).
Thermistor measurements are linearized using a Steinhart-Hart
linearization algorithm. This algorithm requires coefficients
from the sensor manufacturer data sheet).
Two-wire, two-sensor configuration
Three-Wire, Single-Sensor Configuration
A three-wire configuration compensates for lead-wire resistance by using a single-voltage sense connection. Only one
sensor per channel pair can be connected in a three-wire configuration. When a three-wire, single-sensor sensor configuration is selected with software, the USB-5203 measures the
lead resistance on the first channel (C#H/C#L) and measures
the sensor itself using the second channel (C#H/C#L). This
configuration compensates for any lead-wire resistance and
temperature change in lead-wire resistance. Connections to
C#H for the first channel and C#H/C#L of the second channel
are made internally.
The USB-5203 makes two, three, and four-wire measurements
of RTDs (100 Ω platinum type) and thermistors.
Two-Wire Configurations
The easiest way to connect an RTD or thermistor to the
USB-5203 is with a two-wire configuration, since it requires
the fewest connections to the sensor. The two wires that provide the RTD sensor with its excitation current also measure
the voltage across the sensor.
Because RTDs exhibit a low nominal resistance, measurement
accuracy can be affected due to the lead wire resistance. For
example, connecting lead wires that have a resistance of 1 Ω
(0.5 Ω each lead) to a 100 Ω platinum RTD results in a 1%
measurement error.
With a two-wire configuration, either one sensor per channel
pair or two sensors per channel pair can be connected.
Two-Wire, Single-Sensor
When a two-wire single sensor configuration is selected with
software (such as InstaCal), connections to C#H and C#L are
made internally.
Three-wire, single-sensor configuration
Four-Wire Configurations
With a four-wire configuration, connect two sets of sense/excitation terminals at each end of the RTD or thermistor sensor.
This configuration completely compensates for any lead-wire
resistance and temperature change in lead-wire resistance.
Use a four-wire configuration when the application requires
very high accuracy measurements. The USB-5203 can be
configured with either a single-sensor-per-channel or a twosensor–per-channel pair.
Two-wire, single-sensor configuration
Measurement Computing
(508) 946-5100
5
[email protected]
mccdaq.com
USB-5200 Series
General Information
Semiconductor Wiring Configuration
Connect the semiconductor sensor to the USB-5203 using
a single-ended configuration. The device provides +5 V and
GND pins for powering the sensor.
Semiconductor sensor configuration
Trigger Input
USB-5200 Series devices have an external digital trigger input
that is software-selectable for edge- or level-sensitive mode.
Configure edge-sensitive mode for either rising or falling edge.
Level-sensitive mode can be configured for either high or low
level. The default setting at power up is edge-sensitive, rising
edge.
Four-wire, single-sensor configurations
Digital I/O
USB-5200 Series devices provide eight digital I/O lines that are
pulled up to 5 V with a 47 kΩ resistor (default). Factory reconfiguration of the resistor for pull-down to ground is available
by request. Each digital bit can be configured for either input
or output. When a bit is configured for input, the corresponding DIO terminal can detect the state of any TTL-level input.
Four-wire, two-sensor configuration
Semiconductor Sensor Measurements
(USB-5203 Only)
Configuring DIO Channels to Generate Alarms
Semiconductor sensors are suitable over a range of approximately -40 ˚C to 125 ˚C, where an accuracy of ±2 ˚C is
adequate. The temperature measurement range of a semiconductor sensor is small when compared to thermocouples
and RTDs. However, semiconductor sensors can be accurate,
inexpensive and easy to interface with other electronics for
display and control.
Each DIO bit can be configured as a temperature alarm with
software. 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.
Calibration
USB-5200 Series devices are factory-calibrated. Specifications
are guaranteed for one year. For calibration beyond one year,
return the device to the factory for recalibration.
The USB-5203 makes high-resolution measurements of semiconductor sensors. The software outputs the measurement
data as a 32-bit floating point value in either voltage or temperature. Use InstaCal to select the sensor type (LM35, TMP35
or equivalent) and the sensor input channel to connect to the
sensor.
Measurement Computing
(508) 946-5100
6
[email protected]
mccdaq.com
USB-5200 Series
Software
Software Support
USB-5200 Series devices are supported by the software in the table below.
Ready-to-Run Applications
InstaCal
An interactive utility that configures and tests MCC hardware. Windows® OS
InstaCal is included with the free MCC DAQ Software bundle (CD/download).
DAQami
(USB-to-PC
connection only)
Advanced data logging application with drag-and-drop software interface that is used
to acquire, view, and log data. DAQami can be configured to log analog channels and
to view that data in real-time or post-acquisition on user-configurable displays. Supported features may vary with hardware. Windows OS
DAQami is available as a purchased software download.
TracerDAQ and
TracerDAQ Pro
(USB-to-PC
connection only)
A virtual strip chart, oscilloscope, function generator, and rate generator applications
used to generate, acquire, analyze, display, and export data. Supported features may
vary with hardware. The Pro version provides enhanced features. Windows OS
TracerDAQ is included with the free MCC DAQ Software bundle (CD/download).
TracerDAQ Pro is available as a purchased software download.
General-Purpose Programming Support
Universal Library
(UL)
Programming library of function calls for C, C++, VB, C# .Net, and VB .Net using
Visual Studio and other IDEs. Windows OS
The UL is included with the free MCC DAQ Software bundle (CD/download).
Application-Specific Programming Support
ULx for
NI LabVIEW
A comprehensive library of VIs and example programs for NI LabVIEW that is used to
develop custom applications that interact with most MCC devices. Windows OS
(USB-to-PC
connection only)
ULx is included with the free MCC DAQ Software bundle (CD/download).
DASYLab Driver
Icon-based data acquisition, graphics, control, and analysis software that allows users
to create complex applications in minimal time without text-based programming.
(USB-to-PC
connection only)
Measurement Computing
DASYLab is available as a purchased software download. Windows OS
(508) 946-5100
7
[email protected]
mccdaq.com
USB-5200 Series
Specifications
Specifications
Internally, the device has four, dual-channel, fully differential A/Ds providing
a total of eight differential channels. The analog input channels are therefore
configured in four channel pairs with CH0/CH1 sensor inputs, CH2/CH3 sensor
inputs, CH4/CH5 sensor inputs, and CH6/CH7 sensor inputs paired together.
This channel-pairing requires the analog input channel pairs be configured to
monitor the same category of temperature sensor. Mixing different sensor types
of the same category (such as a type J thermocouple on channel 0 and a type T
thermocouple on channel 1) is valid.
Channel configuration information is stored in the EEPROM of the isolated
microcontroller by the firmware whenever any item is modified. Modification
is performed by commands issued over USB from an external application, and
the configuration is made non-volatile through the use of the EEPROM. The
factory default configuration is Disabled. In Disabled mode, analog inputs are
disconnected from the terminal blocks and all of the A/D inputs are internally
grounded. This mode also disables each of the current excitation sources.
All specifications are subject to change without notice.
Typical for 25 °C unless otherwise specified.
Analog Input
A/D converters: Four dual 24-bit, Sigma-Delta type
Number of channels: 8 differential
Input isolation: 500 VDC minimum between field wiring and USB interface
Channel configuration: Software-selectable to match sensor type
Differential input voltage range for each supported sensor categories
Thermocouple: ±0.080 V
RTD (USB-5203 only): 0 V to 0.5 V
Thermistor (USB-5203 only): 0 V to 2 V
Semiconductor (USB-5203 only): 0 V to 2.5 V
Absolute maximum input voltage:
±C0x through ±C7x relative to GND: ±24 V power on, ±24 V power off
Input impedance: 5 GΩ, min
Input leakage current
Open thermocouple detect disabled: 30 nA max
Open thermocouple detect enabled: 105 nA max
Normal mode rejection ratio: fIN = 60 Hz: 90 dB min
Common mode rejection ratio: fIN=50 Hz/60 Hz: 100 dB min
Resolution: 24 bits
No missing codes: 24 bits
Input coupling: DC
Warm-up time: 30 minutes min
Open thermocouple detect: Automatically enabled when the channel pair is
configured for a thermocouple sensor. The maximum open detection time is
3 seconds.
CJC sensor accuracy
15 °C to 35 °C: ±0.25 °C typ,±0.5 °C max
0 °C to 70 °C: –1.0 °C to +0.5 °C max
Compatible Sensors
Sensor
J: –210 to 1200
K: –270 to 1372
R: –50 to 1768
E: –270 to 1000
B: 0 to 1820
Max Number of
Sensors
(all Channels
Configured Alike)
Conditions
J, K, S, R, B, E, T, or N
Semiconductor
(USB-5203
only)
RTD/Thermistor
(USB-5203
only)
RTD
(USB-5203 only)
Thermistor
(USB-5203 only)
Semiconductor/IC
(USB-5203 only)
8 Differential
Channels
2-Wire Configuration
with a Single Sensor
per Channel Pair
4 Differential
Channels
2-Wire Configuration
with Two Sensors
per Channel Pair
8 Differential
Channels
3-Wire Configuration
with a Single Sensor
per Channel Pair
4 Differential
Channels
4-Wire Configuration
with a Single Sensor
per Channel Pair
4 Differential
Channels
4-Wire Configuration
with Two Sensors per
Channel Pair
8 Differential
Channels
(508) 946-5100
100 Ω PT
(DIN 43760: 0.00385 ohms/ohm/°C)
100 Ω PT (SAMA: 0.003911 ohms/ohm/°C)
100 Ω PT
(ITS-90/IEC751: 0.0038505 ohms/ohm/°C)
8 Differential
Channels
Measurement Computing
T: –270 to 400
N: –270 to 1300
Disabled
(default)
Thermocouple
S: –50 to 1768
Thermocouple
Channel Configurations
Sensor
Category
Conditions
Standard 2,252 Ω Through 30,000 Ω
LM35, TMP35 or Equivalent
Accuracy
Thermocouple Measurement Accuracy
Thermocouple measurement accuracy specifications include linearization,
cold-junction compensation and system noise. These specs are for one year or
3000 operating hours, whichever comes first, and for operation of the device
between 15 °C and 35 °C. For measurements outside this range, add ±0.5° to the
maximum error shown. There are CJC sensors on each side of the module. The
accuracy listed above assumes the screw terminals are at the same temperature as
the CJC sensor. Errors shown do not include inherent thermocouple error. Please
contact the thermocouple supplier for details on the actual thermocouple error.
Thermocouples must be connected to the device such that they are floating
with respect to GND. The device GND pins are isolated from earth ground,
so connecting thermocouple sensors to voltages referenced to earth ground is
permissible as long as the isolation between the GND pins and earth ground is
maintained.
When thermocouples are attached to conductive surfaces, the voltage differential between multiple thermocouples must remain within ±1.4 V. For best
results, MCC recommends using insulated or ungrounded thermocouples when
possible.
8
[email protected]
mccdaq.com
USB-5200 Series
Specifications
Sensor
Type
J
K
S
R
B
E
T
N
Maximum
Error (°C)
Typical
Error (°C)
±1.499
±0.507
–210 to 0
±0.643
±0.312
0 to 1200
±1.761
±0.538
–210 to 0
±0.691
±0.345
0 to 1372
±2.491
±0.648
–50 to 250
±1.841
±0.399
250 to 1768.1
±2.653
±0.650
–50 to 250
±1.070
±0.358
250 to 1768.1
±1.779
±0.581
250 to 700
±0.912
±0.369
700 to 1820
±1.471
±0.462
–200 to 0
±0.639
±0.245
0 to 1000
±1.717
±0.514
–200 to 0
±0.713
±0.256
0 to 600
±1.969
±0.502
–200 to 0
±0.769
±0.272
0 to 1300
Thermistor Measurement Accuracy (USB-5203 Only)
Temperature
Range (°C)
The error shown in the table below does not include errors of the sensor itself.
Sensor linearization is performed using a Steinhart-Hart linearization algorithm.
These specs are for one year while operating between 15 °C and 35 °C. The specification does not include lead resistance errors for 2-wire thermistor connections. Contact the sensor supplier for the actual sensor error limitations.
Total thermistor resistance on any given channel pair must not exceed 180 kΩ.
Thermistor
Temperature
Range (°C)
Maximum Accuracy Error (°C)
Ix+ = 10 µA
2252 Ω
–40 to 120
±0.05
3000 Ω
–40 to 120
±0.05
5000 Ω
–35 to 120
±0.05
10000 Ω
–25 to 120
±0.05
30000 Ω
–10 to 120
±0.05
Typical Thermistor Resistance
Typical resistance values at various temperatures for supported thermistors
are shown in the table below. The USB-5203 cannot measure resistance values
greater than 180 kΩ in thermistor mode. The 180 kΩ resistance limit includes
the total resistance across the current excitation (Ix+/Ix–) pins, which is the sum
of the thermistor resistance and the lead resistances.
For accurate three-wire compensation, the individual lead resistances connected
to the Ix+/Ix– pins must be of equal value.
Thermistor Resistance
Semiconductor Sensor Measurement Accuracy (USB-5203 Only)
The error shown in the table below does not include errors of the sensor itself.
These specs are for one year while operating the device between 15 °C and 35 °C.
Contact the sensor supplier for details on the actual sensor error limitations.
Temp
(°C)
2252 Ω
3000 Ω
5 kΩ
10 kΩ
30 kΩ
–40
76 kΩ
101 kΩ
168 kΩ
240 kΩ
885 kΩ
Temperature
Range (°C)
Maximum Accuracy
Error (°C)
–35
55 kΩ
73 kΩ
121 kΩ
179 kΩ
649 kΩ
–30
40 kΩ
53 kΩ
88 kΩ
135 kΩ
481 kΩ
–40 to 150
±0.50
–25
29 kΩ
39 kΩ
65 kΩ
103 kΩ
360 kΩ
–20
22 kΩ
29 kΩ
49 kΩ
79 kΩ
271 kΩ
RTD Measurement Accuracy (USB-5203 Only)
–15
16 kΩ
22 kΩ
36 kΩ
61 kΩ
206 kΩ
The error shown in the table below does not include errors of the sensor itself.
Sensor linearization is performed using a Callendar-Van Dusen linearization
algorithm. These specs are for one year while operating the device between
15 °C and 35 °C. The specification does not include lead resistance errors for
2-wire RTD connections. Contact the sensor supplier for details on the actual
sensor error limitations.
In RTD mode, the device cannot measure resistance values greater than 660 Ω.
The 660 Ω resistance limit includes the total resistance across the current excitation (Ix+/Ix–) pins, which is the sum of the RTD resistance and the lead resistances. For accurate three-wire compensation, the individual lead resistances
connected to the Ix+/Ix– pins must be of equal value.
–10
12 kΩ
17 kΩ
28 kΩ
48 kΩ
158 kΩ
–5
9.5 kΩ
13 kΩ
21 kΩ
37 kΩ
122 kΩ
0
7.4 kΩ
9.8 kΩ
16 kΩ
29 kΩ
95 kΩ
Sensor Type
LM35, TMP35, or
Equivalent
RTD
PT100,
DIN,
US, or
ITS-90
Sensor Temperature
(°C)
Throughput Rate to PC
The analog inputs are configured to run continuously. Each channel is sampled
twice per second. The maximum latency between when a sample is acquired and
the temperature data is provided by the USB unit is approximately 0.5 s. The
maximum throughput to a CompactFlash® memory card is 1 S/s per channel.
Accuracy Error (°C)
Ix+ = 210 µA
Number of
Input Channels
Maximum
Throughput
Maximum
Typical
1
2 S/s
–200 to –150
±2.85
±2.59
2
2 S/s per channel, 4 S/s total
–150 to –100
±1.24
±0.97
3
2 S/s per channel, 6 S/s total
–100 to 0
±0.58
±0.31
4
2 S/s per channel, 8 S/s total
0 to 100
±0.38
±0.11
5
2 S/s per channel, 10 S/s total
100 to 300
±0.39
±0.12
6
2 S/s per channel, 12 S/s total
300 to 600
±0.40
±0.12
7
2 S/s per channel, 14 S/s total
8
2 S/s per channel, 16 S/s total
Measurement Computing
(508) 946-5100
9
[email protected]
mccdaq.com
USB-5200 Series
Specifications
Digital Input/Output
All ground pins are common and isolated from earth ground. If a connection is
made to earth ground when using digital I/O and conductive thermocouples,
the thermocouples are no longer isolated. In this case, thermocouples must
not be connected to any conductive surfaces that may be referenced to earth
ground.
Digital type: CMOS
Number of I/O: 8 (DIO0 through DIO7)
Configuration: Independently configured for input or output. Power on reset is
input mode unless bit is configured for alarm.
Pull up/pull-down configuration: All pins pulled up to +5 V via 47 K resistors
(default). Pull down to ground (GND) also available.
Digital I/O transfer rate (software paced)
Digital input: 50 port reads or single bit reads per second typ
Digital output: 100 port writes or single bit writes per second typ
Input high voltage: 2.0 V min, 5.5 V absolute max
Input low voltage: 0.8 V max, –0.5 V absolute min
Output low voltage (IOL = 2.5 mA): 0.7 V max
Output high voltage (IOH = –2.5 mA): 3.8 V min
Temperature Alarms
Number of alarms: 8 (one per digital I/O line)
Alarm functionality: Each alarm controls its associated digital I/O line as an
alarm output. The input to each alarm can be any temperature input channel.
When an alarm is enabled, its associated I/O line is set to output (after the
device is reset) and driven to the appropriate state based on the alarm options
and input temperature. Alarm configurations are stored in non-volatile memory and are loaded at power on. Alarms function both in data logging mode
and USB mode.
Alarm input modes
Alarm when input temperature > T1
Alarm when input temperature > T1, reset alarm when input temperature
goes below T2
Alarm when input temperature < T1
Alarm when input temperature < T1, reset alarm when input temperature
goes above T2
Alarm when input temperature is < T1 or > T2
T1 and T2 may be independently set for each alarm.
Alarm output modes
Disabled: Digital I/O line may be used for normal operation
Enabled: Active high output (digital I/O line goes high when alarm conditions met)
Enabled: Active low output (digital I/O line goes low when alarm conditions
met)
Alarm update rate: 1 second
Memory
EEPROM: 1,024 bytes isolated micro reserved for sensor configuration
256 bytes USB micro for external application use
256 bytes USB micro reserved for data logging configuration
Microcontroller
Type: Two high performance 8-bit RISC microcontrollers
Data Logging
Standalone power supply: 2.5 watt USB power adapter with interchangeable
plugs (includes plug for USA)
Memory card type: CompactFlash
Supplied memory card: 512 MB CompactFlash card
Memory card host access: USB mass storage device
File systems supported: FAT16, FAT32 (the device only creates 8.3 file names in
the root
subdirectory)
Log file format: Binary
Logging rate: Min 1 second between entries, max 232 seconds, 1 second granularity
Data items logged: Timestamp, temperature, or raw reading from selected channels, state of DIO lines, CJC sensor readings
Measurement Computing
(508) 946-5100
Logging start methods (software-selectable)
Start logging on power up: Logging begins 5 seconds after power on to allow
hardware to settle.
Start logging on button: Device is idle on power on. Press and hold the button until the LED turns on to begin logging. First sample is acquired 1 second
after the LED turns on unless <5 seconds since power on.
Start logging at specified time: Device is idle until the real-time clock indicates the time is equal to or greater than the specified time, at which time the
LED turns on. The first sample is acquired 1 second after the LED turns on
unless <5 seconds since power on.
Logging stop methods
Stop on button press: To stop logging, press and hold the button until the
LED turns off. The device caches logged data in volatile memory prior to writing to memory card. When logging, always use the button to stop logging
and ensure data is written to memory card prior to removing power.
Logging status indication: The LED operations when connected to the AC
power adapter are different than when connected to USB.
Logging off: The LED is off (disabled).
Start logging on power up: LED turns on, but blinks off momentarily every
time data is captured.
Start logging on button: The LED is initially off. When the button is pressed
and held for approximately 1 second, the LED turns on and acts the same as Start Logging on Power Up mode.
Start logging at specified time: the LED turns off, with a momentary on
flash every second until the specified date/time is reached. At that time, the LED turns on and acts the same as Start Logging on Power Up mode.
Other indication: To stop logging and store the remaining data to memory
card, press and hold the button until the LED turns off. It is then safe to
remove the memory card.
The LED blinks rapidly (250 ms period) when the memory card becomes full,
and when the memory card is removed during logging (insert a memory card
to stops the LED from blinking).
Real-Time Clock
Battery backup: CR-2032 lithium coin cell, replaceable
Accuracy: ±1 minute per month
USB +5V Voltage
USB +5 V (VBUS) input voltage range: 4.75 V min to 5.25 V max
Power
Connected to USB
Supply current
USB enumeration: <100 mA
Continuous mode: 500 mA max (this is the
total current requirement for the device which
includes up to 10 mA for the status LED.
+5 V output voltage range (self-powered hub): 4.75 V min to 5.25 V max
+5 V output current (self-powered hub): 10 mA max
Self-powered hub is a USB hub with an external power supply. Self-powered
hubs allow a connected USB device to draw up to 500 mA. This device may
not be used with bus-powered hubs due to the power supply requirements.
Root Port Hubs reside in the PC USB host controller. The USB port(s) on the
PC are root port hubs. All externally powered root port hubs (desktop PC)
provide up to 500 mA of current for a USB device. Battery-powered root port
hubs provide 100 mA or 500 mA, depending upon the manufacturer. A laptop PC that is not connected to an external power adapter is an example of a
battery-powered root port hub.
Isolation (measurement system to PC): 500 VDC min
Connected to AC adapter power supply for data logging
Output voltage: 5 V ±5%
Output wattage: 2.5 W
Input voltage: 100 VAC to 240 VAC, 50 Hz to 60 Hz
Input current: 0.2 A
10
[email protected]
mccdaq.com
USB-5200 Series
Specifications & Ordering
Current Excitation Outputs (Ix+) (USB-5203 Only)
USB Specifications
The device has four current excitation outputs that should always be used in this
dedicated configuration:
Current Excitation Output
AI Channel
I1+/I1–
CH0/CH1
I2+/I2–
CH2/CH3
USB device type: USB 2.0 (full-speed)
Device compatibility: USB 1.1, USB 2.0;
self-powered, 500 mA consumption max
USB cable type: A-B cable, UL type AWM 2725 or equivalent. (min 24 AWG
VBUS/GND,
min 28 AWG D+/D–)
USB cable length: 3 m (9.84 ft) max
I3+/I3–
CH4/CH5
Environmental
I4+/I4–
CH6/CH7
Operating temperature range: 0 °C to 70 °C
Storage temperature range: –40 °C to 85 °C
Humidity: 0% to 90% non-condensing
Current excitation outputs are automatically configured based on the sensor
(thermistor or RTD) selected.
Current excitation output ranges
Thermistor: 10 µA typ
RTD: 210 µA typ
Tolerance: ±5% typ
Drift: 200 ppm/°C
Line regulation: 2.1 ppm/V max
Load regulation: 0.3 ppm/V typ
Output compliance voltage (relative to GND): 3.90 V max, –0.03 V min
Mechanical
Dimensions (L × W × H): 128.52 x 88.39 × 35.56 mm (5.06 × 3.48 × 1.43 ft)
User connection length: 3 m (9.84 ft) max
Screw Terminal Connector
Connector type: Screw terminal
Wire gauge range: 16 AWG to 30 AWG
Ordering Information
Part No.
Description
USB-5201
USB-based 8-channel thermocouple input data logger (CompactFlash) with high/low alarms, and 8 digital I/O lines. Includes USB cable,
USB power adapter, and MCC DAQ software CD.
USB-5203
USB-based 8-channel temperature data logger (CompactFlash) supports 4 sensor types, high/low alarms, and 8 digital I/O lines.
Includes USB cable, USB power adapter, and MCC DAQ software CD.
Accessories
Part No.
Description
745690-E001
E-type thermocouples wire, fiberglass (0 °C to 482 °C, 32 °F to 900 °F), 1 m
745690-E002
E-type thermocouples wire, fiberglass (0 °C to 482 °C, 32 °F to 900 °F), 2 m
745690-J001
J-type thermocouples wire, fiberglass (0 °C to 482 °C, 32 °F to 900 °F), 1 m
745690-J002
J-type thermocouples wire, fiberglass (0 °C to 482 °C, 32 °F to 900 °F), 2 m
745690-K001
K-type thermocouples wire, fiberglass (0 °C to 482 °C, 32 °F to 900 °F), 1 m
745690-K002
K-type thermocouples wire, fiberglass (0 °C to 482 °C, 32 °F to 900 °F), 2 m
745690-T001
T-type thermocouples wire, fiberglass (0 °C to 482 °C, 32 °F to 900 °F), 1 m
745690-T002
T-type thermocouples wire, fiberglass (0 °C to 482 °C, 32 °F to 900 °F), 2 m
745691-01
3-wire, 100 ohm RTD, sealed with alumina tube, 1 m
745691-02
3-wire, 100 ohm RTD, platinum (ready made), 2 m
512 MB CF Card
CompactFlash card for Measurement Computing data loggers, 512 MB
1 GB CF Card
CompactFlash card for Measurement Computing data loggers, 1 GB
2 GB CF Card
CompactFlash card for Measurement Computing data loggers, 2 GB
Software also Available from MCC
Part No.
Description
DAQami
Easy-to-use advanced data logging application to acquire, view, and log data
TracerDAQ Pro
Out-of-the-box virtual instrument suite with strip chart, oscilloscope, function generator, and rate generator – professional version
DASYLab
Icon-based data acquisition, graphics, control, and analysis software
Measurement Computing
DS USB-5200-Series.indd
(508) 946-5100
11
[email protected]
mccdaq.com
Document Revision 2, July, 2015
© Copyright 2015, Measurement Computing Corporation
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement