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USB-5203

Multi-sensor Measurement and Data Logger

Document Revision 14

January 2015
© Copyright 2015

User's Guide

Содержание USB-5200 Series

Страница 2: ...n any form by any means electronic mechanical by photocopying recording or otherwise without the prior written permission of Measurement Computing Corporation Notice Measurement Computing Corporation does not authorize any Measurement Computing Corporation product for use in life support systems and or devices without prior written consent from Measurement Computing Corporation Life support device...

Страница 3: ... Sensor input terminals C0H C0L to C7H C7L 10 Current excitation output terminals I1 to I4 11 Four wire two sensor common terminals 4W01 to 4W67 11 Two sensor common terminals IC01 to IC67 11 Digital terminals DIO0 to DIO7 11 CJC sensors 11 Power terminals 5V 11 Ground terminals GND 11 Thermocouple connections 11 Wiring configuration 12 RTD and thermistor connections 12 Two wire configuration 13 T...

Страница 4: ... Analog input 22 Channel configurations 22 Compatible sensors 23 Accuracy 23 Thermocouple measurement accuracy 23 Semiconductor sensor measurement accuracy 24 RTD measurement accuracy 24 Thermistor measurement accuracy 25 Throughput rate to PC 25 Digital input output 26 Temperature alarms 27 Memory 27 Microcontroller 27 Data Logging 28 Real time clock 28 USB 5V voltage 29 Power 29 USB specificatio...

Страница 5: ...of objects on a screen such as buttons text boxes and check boxes italic text Italic text is used for the names of manuals and help topic titles and to emphasize a word or phrase Where to find more information Additional information about USB 5203 hardware is available on our website at www mccdaq com You can also contact Measurement Computing Corporation with specific questions Knowledgebase kb m...

Страница 6: ...utput The input to each alarm is one of the temperature input channels The output of each alarm is software configurable as active high or low You set up the temperature threshold conditions to activate each alarm When an alarm is activated the associated DIO channel is driven to the output state You can log your sensor measurements to a CompactFlash memory card CompactFlash is a removable non vol...

Страница 7: ...c date and time Data is stored on the memory card in binary files After logging measurements you can transfer the files to your computer You can use InstaCal to convert the files to csv format for use in Microsoft Excel files or to txt format for use in other applications Functional block diagram USB 5203 functions are illustrated in the block diagram shown here Figure 1 Functional block diagram ...

Страница 8: ...es that the device detects the hub as an active USB port Firmware revision 2 12 and earlier When you connect the USB 5203 for the first time a Found New Hardware dialog opens when the operating system detects the device When the dialog closes the installation is complete The device LED will blink and then remain on This indicates that communication is established between the USB 5203 and your comp...

Страница 9: ...pecified rated accuracy of measurements For RTD or thermistor measurements this warm up time is also required to stabilize the internal current reference Configuring data logging options The following data logging options are programmable with software select the input channels to log set the data format set the start mode set up alarm conditions copy and convert saved binary files delete data fil...

Страница 10: ...the bottom edge Each row has 26 connections Between each bank of screw terminals are two integrated CJC sensors used for thermocouple measurements Signals are identified in Figure 2 Figure 2 USB 5203 screw terminal pin numbers Use 16 AWG to 30 AWG wire for your signal connections Tighten screw terminal connections When making connections to the screw terminals fully tighten the screw Simply touchi...

Страница 11: ...igurations with two RTD or thermistor sensors Digital terminals DIO0 to DIO7 You can connect up to eight digital I O lines to the screw terminals labeled DIO0 to DIO7 Each terminal is software configurable for input or output If a digital bit is set up as an alarm the bit is configured for output on power up and assumes the state defined by the alarm configuration CJC sensors The USB 5203 has two ...

Страница 12: ...hat its resistance changes with temperature thermistors show a large change in resistance that is proportional to a small change in temperature The main difference between RTD and thermistor measurements is the method used to linearize the sensor data RTDs and thermistors are resistive devices that require an excitation current to produce a voltage drop that can be measured differentially across t...

Страница 13: ...rror With a two wire configuration you can connect either one sensor per channel pair or two sensors per channel pair Two wire single sensor A two wire single sensor measurement configuration is shown in Figure 4 Figure 4 Two wire single RTD or thermistor sensor measurement configuration When you select a two wire single sensor configuration with InstaCal connections to C H and C L are made intern...

Страница 14: ...ensation For accurate three wire compensation the individual lead resistances connected to the I pins must be of equal resistance value Four wire configuration With a four wire configuration connect two sets of sense excitation wires 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 Conn...

Страница 15: ...ge 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 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 t...

Страница 16: ...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 For general information regarding digital signal connections and digital I O techniques refer to the Guide to Signal Connections available on our web site at www mccdaq com signals signals pdf Configuring the DIO ...

Страница 17: ...d junction voltage from the analog input s thermocouple voltage measurement Increasing the thermocouple length If you need to increase the length of your thermocouple use the same type of thermocouple wires to minimize the error introduced by thermal EMFs Data linearization After the CJC correction is performed on the measurement data an on board microcontroller automatically linearizes the thermo...

Страница 18: ...ent is returned by software as a 32 bit floating point value in a voltage resistance or temperature format Data linearization An on board microcontroller automatically performs linearization on RTD and thermistor measurements RTD measurements are linearized using a Callendar Van Dusen coefficients algorithm you select DIN SAMA or ITS 90 Thermistor measurements are linearized using a Steinhart Hart...

Страница 19: ... 5203 is not connected to an active USB port Refer to the table below for the function of the USB 5203 LED when the device is connected to the external supply and is logging data The function of the LED varies according to the selected logging mode LED function when the USB 5203 is logging data Logging mode LED Illumination Indication Logging off The LED is off The USB 5203 is not logging data and...

Страница 20: ...ing button to end a data logging session The data logging button is also used to start recording data when the logging mode is set in InstaCal to Start Logging on Button To begin recording data press and hold the button until the LED begins to blink The first sample is taken one second after the LED illuminates When you first power on the USB 5203 wait at least five seconds before pressing the dat...

Страница 21: ...ogging measurements you can transfer the files to your computer by reconnecting the USB 5203 to a USB port on your computer or by removing the CompactFlash card from the USB 5203 and using a card reader connected to your computer Note that when installed with firmware version 3 and later the USB 5203 appears as a Mass Storage Device when connected to a USB port on your computer so you can copy fil...

Страница 22: ...ution 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 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 Channel configurations Internally the device has four dual channel fully diffe...

Страница 23: ...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 Thermistor Standard 2 252 Ω through 30 000 Ω Semiconductor IC 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 h...

Страница 24: ...cy Error C LM35 TMP35 or equivalent 40 to 150 0 50 Note 2 RTD measurement accuracy The error shown in Table 6 below does not include errors of the sensor itself The 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 RT...

Страница 25: ...ot 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 Table 8 Typical thermistor resistance spec...

Страница 26: ...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...

Страница 27: ...1 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 ...

Страница 28: ...p 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 adapter power supply are different ...

Страница 29: ...ment for the device which includes up to 10 mA for the status LED Note 4 Self powered hub refers to 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 your PC are root port hubs All exte...

Страница 30: ...ation output AI channel I1 I1 CH0 CH1 I2 I2 CH2 CH3 I3 I3 CH4 CH5 I4 I4 CH6 CH7 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 pins 9 19 28 38 3 90 V max 0 03 V min Environmental Table 20 Environmental specifications Operating temperature range...

Страница 31: ...6 CH7 current excitation source CJC sensor CJC sensor 11 I2 CH2 CH3 current excitation source 37 I3 CH4 CH5 current excitation return 12 NC No connection 38 GND Ground 13 C2H CH2 sensor input 39 C5L CH5 sensor input 14 C2L CH2 sensor input 40 C5H CH5 sensor input 15 4W23 CH2 CH3 4 wire 2 sensor common 41 IC45 CH4 CH5 2 sensor common 16 IC23 CH2 CH3 2 sensor common 42 4W45 CH4 CH5 4 wire 2 sensor c...

Страница 32: ... the following conditions must be met The host computer peripheral equipment power sources and expansion hardware must be CE compliant Equipment must be operated in a controlled electromagnetic environment as defined by Standards EN 61326 1 2006 or IEC 61326 1 2005 Shielded wires must be used for all I Os and must be less than 3 meters 9 75 feet in length The host computer must be properly grounde...

Страница 33: ...Measurement Computing Corporation 10 Commerce Way Suite 1008 Norton Massachusetts 02766 508 946 5100 Fax 508 946 9500 E mail info mccdaq com www mccdaq com ...

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