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ACR Electronics SmartReader Plus Reference Manual Download Page 78

SmartReader Plus Data Loggers

69

Copyright © 2010 ACR Systems Inc.  All Rights Reserved.

Interchangeable replacement RH sensors for loggers are available through your dealer.  For
best accuracy, it is recommended these be calibrated together with the logger - consult your
ACR representative for price and availability of this service.

1.14.5

Troubleshooting

If you are getting what appear to be wrong readings, consider the following before recalibrating
the sensors.  Sensors sample the atmosphere (or medium) in the immediate vicinity of the
sensors themselves.  The physical state of the atmosphere and its degree of uniformity and
turbulence will limit the validity of a measurement at some distance from the sensor.  This
becomes especially apparent for the measurement of ambient temperature and relative
humidity.

In a room, temperature and RH levels may vary dramatically from location to location.  Such
factors as air stratification, drafts and proximity to heat or humidity sources (people,
equipment, moisture, solar gain, etc.) can contribute to a wide variance in conditions even
within a small confined area.  The individual sensors associated with your Conservation
Logger measure and record temperature and RH only in one location.  They do not, in any
way, represent an overall reading.

If you decide to check the calibration of your Conservation Logger RH sensor using a Sling
Psychrometer, keep in mind the following:

·

Any instrument that requires a person to be present at, or in very close proximity to the
RH sensor in order to get a reading, will have a measurement error introduced to it. 
That is because the body readily gives off heat and moisture that is especially
noticeable at lower RH levels.

·

The time taken between slinging the psychrometer and reading it can exhibit several
degrees of inaccuracy in the wet bulb reading.  Air currents around the body, whether it
is slung in the shade of a building or in sunlight, not knowing how to tie the wet sock, its
condition, and the purity of water used, all contribute to error.  In addition, interpolating
the data from a psychrometric chart can add another 2 to 4% to the accumulative error.

1.14.6

Specifications

Temperature Sensor
Type:

NTC Thermistor

Range:

-40 to 70°C

(-40 to 158

°F

)

Accuracy:

+/- 0.2°C over the range of 0 to 70°C
(+/- 0.3°F over the range of 32 to 158°F)

Resolution:

0.03°C at 25°C (0.05°F at 77°F); 
better than 0.07°C (0.12°F) between -25 and 70°C (-13 and

158°F); 

better than 0.13°C (0.23°F) between -40 and -25°C (-40 and

-13°F)

RH Sensor
Type:

Capacitive thin polymer film

Summary of Contents for SmartReader Plus

Page 1: ...Copyright 2010 ACR Systems Inc All Rights Reserved Reference Guide IMPORTANT SmartReader Plus Data Loggers ...

Page 2: ...or make no claim to these trademarks For more information regarding trademarks see the Trademark Notices section of this manual ACR Systems Inc assumes no responsibility for errors or omissions or for damages resulting from the use of information contained in this document or from the use of programs and source code that may accompany it In no event shall the publisher and the author be liable for...

Page 3: ...SmartReader Plus is a Registered Trademark of ACR Systems Inc TRADEMARK NOTICES ...

Page 4: ...ver be a charge for freight and Canadian Customs clearance if applicable Any replacement hardware or software will be warranted for the remainder of the original warranty period To the maximum extent permitted by applicable laws ACR Systems Inc disclaims all other warranties either expressed or implied including but not limited to implied warranties of fitness for a particular application In no ev...

Page 5: ...0 Fast Sampling 11 Logger Memory 14 Logger Alarms 15 Delay Before First Call 15 Delay Between Calls 16 Delay After Backup 17 Baud Rate 18 Alarm Dialout String 19 Logger Channels 19 Channel Information 21 Channel Alarms 21 Channel Calibration 22 Logger Connection Settings 26 3 SmartReader Plus 1 Temperature Logger 26 Description 26 Setup 28 4 SmartReader Plus 2 Temperature Relative Humidity Logger ...

Page 6: ...ifications 44 8 SmartReader Plus 5 Thermocouple Logger 44 Description 44 Setup 44 Use 46 Specifications 46 Manual Calibration 47 9 SmartReader Plus 6 Thermocouple Logger 47 Description 47 Setup 48 Use 48 Specifications 49 Manual Calibration 50 10 SmartReader Plus 7 Process Signal Logger 50 Description 50 Setup 52 Choosing Input Channels 53 Customizing Input Ranges 57 Selecting Transducers and Tran...

Page 7: ...73 Temperature and Relative Humidity Calibration 73 Thermistor Calibration 76 Relative Humidity Calibration 79 17 APPENDIX C Thermistor Temperature Probes 79 Thermistor Temperature Probes 79 What are Thermistors 79 ET Series Temperature Probes 80 Setup and Use 81 Specifications 85 Resistance vs Temperature Tables 90 Custom Probes 91 18 APPENDIX D Typical SmartReader Plus 3 Connection Diagram 91 AC...

Page 8: ...SmartReader Plus Data Loggers IV Copyright 2010 ACR Systems Inc All Rights Reserved Index 105 ...

Page 9: ...o TrendReader 2 0 conventions and procedures To get the most from your logger please take time to familiarize yourself with TrendReader 2 0 and its Reference Guide For important information on how all SmartReader Plus data loggers work and how to use them read the Introduction to SmartReader Plus chapter It will give you an overview of how the loggers work and how to configure them for your applic...

Page 10: ...r software must be installed and ready to run prior to making use of the setup instructions in this section of the guide 1 1 1 Features SmartReader Plus data loggers share many common features that make them useful tools for data collection Pocket sized Solid state components no moving parts Low power microprocessor controlled circuitry 12 bit high resolution readings Precision on board thermistor...

Page 11: ...s at regularly spaced intervals either at slow or fast sample rates take readings from specific channels that you enable associate each channel with an equation in TrendReader software start readings with or without a delay take readings continuously or stop when memory is full 1 1 4 How SmartReader Plus Loggers Take Readings Each SmartReader Plus data logger except the SmartReader Plus 9 has an o...

Page 12: ...ing Proper planning is the key to successful data logging Time spent in this stage will help you save time and frustration later To help you plan answer these questions What exactly do I want to measure Where is the best place to measure How long do I want to monitor for Should other variables be monitored simultaneously Setup To set up your SmartReader Plus data logger you must first have TrendRe...

Page 13: ...hannels which are not required Clear Memory Before starting a logging session clear the logger s memory This will help to keep the collected files smaller as well as decrease the time needed to backup the logger later Note that clearing the memory is automatic if you save setup changes for example assign different equations change sample rate etc Test You can directly read the values that your Sma...

Page 14: ...or system plan You will save time looking for them when your data gathering session is over Also keep track of when you placed the loggers in the area you are monitoring This will help when producing graphs on your computer It may be helpful to label shipping tag each logger so you can properly identify and differentiate it from other loggers Analysis After sufficient time has passed for the logge...

Page 15: ...able External Connector Removable screw type terminal strip with Common connection Resistance to X rays Tested for protection against a 160kV 150mA sec dose 38 FFD about 100times that of an X ray machine Tested for protection against Gamma Ray equivalent to 0 137 1 38 megavolts IR192 28 curies 30 second exposure source to object distance 5 Internal Temperature Sensor Type NTC thermistor 10k ohms a...

Page 16: ...de of Federal Regulations of the Federal Communications Commission FCC Meets Class A radiated and conducted emission requirements of Section 2 of the Radio Interference Regulations of Communications Canada IEC801 2 3 4 and EN55011 covering ESD RFI Immunity EFT Burst and Radiated Emissions respectively for the Commission of the European Communities CE ...

Page 17: ... into two main sections Status and Channels Status contains information about sampling memory and alarms Each channel of the logger contains information about the description equation and Realtime value alarms and calibration associated with the channel You can control the level of detail that you see for the settings by clicking on the and buttons at the left side to expand and collapse the nodes...

Page 18: ...oggers 1 2 1 Logger Status When you contact the logger the logger status is displayed The Status line indicates whether the data logger is actively logging waiting to start or dormant If you set up the logger with no delay it will immediately start logging and the status will show the number of readings or samples that have been taken If you want to have the logger wait before it starts logging se...

Page 19: ...the logger for regular sampling click on the Mode field and select Normal To set the sample rate click on the desired time unit and select the value from the drop down list as shown Note that millisecond sample rates are only applicable with fast sampling To find out more about sample rates and to view a set of sample rate tables see Appendix E Sample Rates Fast Sampling 1 2 1 1 1 With the fast sa...

Page 20: ...memory It is important that you do not waste any logger memory by starting the logger too soon or by leaving unused channels active To set the logger for fast sampling click on the Mode field and select Fast Next click on the desired time unit and select the value from the drop down list 1 2 1 2 Logger Memory The Memory subsection indicates how the data is stored in memory and what the start and e...

Page 21: ...n that appears at the right This will pop up a form allowing you to set the date and time Highlight the date or time and enter the appropriate value You can also click on the drop down list arrow to bring up a calendar You can set the logger s starting time for up to 6 days 1 hour and 39 minutes ahead To set how long to record click on the End Time field Next click on the small button that ...

Page 22: ... you to set the date and time or the capacity Just like entering the start time you can highlight the date or time and enter the appropriate value or you can also click on the drop down list arrow to bring up a calendar If you want to record a specific number of readings simply drag the usage bar to adjust the number of readings to take ...

Page 23: ...ill be dialing a pager you can include a code such as the logger s serial number along with the phone number This helps to identify which logger initiated the alarm call However in order to be able to do this you must choose a pager system that accepts touch tone codes that can be displayed on the pager Since there can be many loggers on a network being able to identify the logger that initiated t...

Page 24: ...ximum time for this delay is 2040 seconds The alarm condition must exist for the entire delay time otherwise the logger will not dial out If the logger comes out of an alarm condition during the call delay period the delay timer will stop and will start again from zero at the next alarm event This is useful in limiting temporary or false alarm triggering To set this delay click on the Delay Before...

Page 25: ...y After Backup deactivates the alarm giving you time to fix the problem that caused the alarm The maximum delay is 720 minutes When you look at the logger status window not in Edit Logger Setup you will see the time counted down Note that the time shown may be slightly inaccurate if you Realtime the logger If the delay period elapses and the alarm condition still exists the logger will dial out ag...

Page 26: ...fter Backup field and enter the value Baud Rate 1 2 1 3 4 The Baud Rate determines the data rate that the logger uses to communicate with the modem that performs the dialing out The baud rates available range from 1200 to 57 600 To set the baud rate click on the Baud Rate field and select the value from the drop down list ...

Page 27: ...f the phone line has plus dial type ATDP 2 After the dial command type the number of the telephone that is to receive the alarm call For example if you wanted a logger to dial a number from a tone dial phone line you would type ATDT 123 555 2222 Calling a Pager In order to include a code that will identify the logger that called the phone number you must choose a pager system that accepts touch to...

Page 28: ...gger s memory You should disable any channels you are not using so that there is as much memory as possible available for the active channel s The Channel subsections are Information Alarms and Calibration 1 2 2 1 Channel Information When you contact the logger the logger status is displayed The Channel line gives the description and the Realtime value if Realtime is turned on The Realtime value i...

Page 29: ...ently selected equation is shown Some channels compensate their output by using the value of another channel For example the calculated value for an RH channel depends on the reading of the RH sensor and the value of the temperature channel In such cases the compensation channel must output in the correct units In the case of RH for example the temperature channel must output in units of temperatu...

Page 30: ...n needs to compensate for this When setting the alarms you also need to enter the expected operating temperature in the Comp Temperature field Note that the default high and low alarm values will be displayed when the alarms are enabled When you enter alarm values between the high and low range the enabled alarms be saved upon Apply or closing the window 1 2 2 3 Channel Calibration The Calibration...

Page 31: ...g for the RF modem select the Connections view in the Shortcuts Bar of TrendReader Otherwise skip to step 4 2 Select the COM port to which the RF modem is attached 3 Click Add Connection Settings and enter in the name of the connection setting 4 Select the Connection Settings view in the Shortcuts Bar of TrendReader 5 Select the RF modem connection setting 6 Click Edit Connection Settings to bring...

Page 32: ...SmartReader Plus Data Loggers 23 Copyright 2010 ACR Systems Inc All Rights Reserved 8 Select only the SRPLogger Click OK ...

Page 33: ...SmartReader Plus Data Logger 24 Copyright 2010 ACR Systems Inc All Rights Reserved 9 Click on the SRPLogger node 10 Click on the Cable Type field to pop up the Cable Type form and select the RFA cable ...

Page 34: ...erhead of the logger which is 14 For example if your RF modem has a block size of 256 then a reasonable value for the Block size would be 240 11 Click on the Block Size field to pop up the Block Size form and enter in the value Click OK You may have to experiment with the Block size to maximize throughput since smaller block sizes transmit less data but usually have fewer retries ...

Page 35: ...to enable each channel you want to use If you are not using a channel disable it in order to save memory Channel Description Equation 0 Internal Temperature 45 2 External Temperature Appendix C Accessories The SmartReader Plus 1 Temperature Logger can be used with ET series temperature probes refer to Appendix C Thermistor Temperature Probes or any NTC thermistor data To use an external temperatur...

Page 36: ...s 27 Copyright 2010 ACR Systems Inc All Rights Reserved Other Applications For information on how you can monitor resistance or switch status with your SmartReader Plus 1 refer to Appendix A Monitoring Resistance and Switch Status ...

Page 37: ...citive thin film relative humidity sensor Changes in relative humidity cause the surface capacitance of the polymer film to vary The SmartReader Plus 2 gauges this capacitance by passing a small electric current through it and measuring the relative voltage drop Because the response of the sensor is temperature dependent a temperature reading is always taken at the same time as the humidity readin...

Page 38: ...T Series Temperature Sensors The ET series of temperature sensors are thermistor probes that can be used easily with your SmartReader Plus 2 for remote temperature measurements The advantage of these probes is that they can be used for a wide range of temperatures are more versatile they can be used to record fluid temperatures and their small size permits them to be easily inserted into hard to g...

Page 39: ... what appear to be wrong readings consider the following before recalibrating the sensors Sensors sample the atmosphere or medium in the immediate vicinity of the sensors themselves The physical state of the atmosphere and its degree of uniformity and turbulence will limit the validity of a measurement at some distance from the sensor This becomes especially apparent for the measurement of ambient...

Page 40: ... accuracy Calibration of the RH channel with the new RH sensor is recommended In the event that you wish to confirm the RH calibration of your sensor you can perform your own field test Refer to Appendix B Temperature and Relative Humidity Calibrations for more information on RH testing Interchangeable replacement RH sensors for loggers are available through your dealer For best accuracy it is rec...

Page 41: ...onse Chemical Tolerances Limits for different chemical groups 1 Organic solvents typically 1 000 10 000 ppm 2 Corrosive agents strong acids S02 H2SO4 Cl2 HCl H2S etc typically 1 10 ppm 3 Weak acids typically 100 1 000 ppm 4 Bases typically 10 000 100 000 ppm Specifications are subject to change without notice ...

Page 42: ...L and A75FL for 50Hz operation Use of these probes allows you to measure alternating current of conductors without the need for breaking circuitry For information on current ranges and resolutions possible with the SmartReader Plus 3 refer to the Specifications in this chapter Current Channel Operation The SmartReader Plus 3 measures electric current through external current probes Each current pr...

Page 43: ...Figure 3 2 Current Probe Connection 2 Adjust the range setting on the current probe s to suit your application A good way to verify a conductor s maximum range is to check the circuit breaker or fuse rating Set the range on your current probe to suit Since the probes do not give predictable readings below 10 in any range always choose the lowest range possible to encompass the full range of data y...

Page 44: ...tion to the signal being measured DO NOT use any other probe unless approved by ACR in writing 3 The SmartReader Plus 3 can record current in accordance with the ranges available on the A60FL A65FL A70FL and A75FL probes Always make sure the current you will be recording will fall into the appropriate range you set on the current probe 1 5 3 Voltage Channels The SmartReader Plus 3 is equipped with...

Page 45: ...and a British fuse plug adapter Contact your local ACR representative for pricing and delivery of this product High Currents You can monitor current ranges higher than those available on a standard probe by using it with an additional transformer For this purpose Amprobe Instruments has available their Amptran CT50 2 a 50 to 1 transformer to monitor currents up to 3000 amps Contact your ACR repres...

Page 46: ...gned to the logger channel you are viewing Make sure it corresponds to the model number and active setting of the current probe you are using If your equation numbers are correctly assigned and you are still getting incorrect readings it may be because you are measuring currents below 10 of the range To correct this make sure the range setting on the probe is at the lowest possible range that will...

Page 47: ...some models relative humidity Figure 4 1 SmartReader Plus 4 1 6 1 Description There are two models of the SmartReader Plus 4 data logger The Standard Model This model is a four channel logger with internal pressure and temperature sensors and an optional EH 020A module for recording relative humidity and temperature remotely This model is available for different ranges refer to Specifications Figu...

Page 48: ...n to the pressure channel Range Resolution Gauge Absolute Equation 10 H20 2 5kPa 0 006 H20 0 0015 kPa SRP 004 010 n a 37 10 H20 Differential 0 006 H20 0 0015 kPa SRP 004 LPD n a 37 0 to 5 PSI 30kPa 0 003 PSI 0 02kPa SRP 004 5G n a 20 0 to 30 PSI 200kPa 0 015 PSI 0 1kPa SRP 004 30G SRP 004 30A 8 0 to 100 PSI 700kPa 0 05 PSI 0 35kPa SRP 004 100G SRP 004 100A 22 0 to 150 PSI 1000kPa 0 05 PSI 0 5 kPa ...

Page 49: ...libration is to use a pneumatic pressure calibrator with a preferred accuracy of at least 0 1 full scale Procedure The procedure to calibrate is as follows 1 Activate the pressure and temperature monitoring channels on your SmartReader Plus 4 if not already enabled 2 Set the LOW MID and HIGH calibration values to zero 3 With the input port on the pressure sensor left unconnected open to ambient re...

Page 50: ...mp Range Operating 40 to 70 C 40 to 158 F Compensated 0 to 70 C 32 to 158 F Accuracy 0 5 FS 25 C 77 F Thermal over Compensated Range 10 H20 3 FS 5 PSI 1 5 FS 30 PSI 0 5 FS 100 PSI 0 5 FS Linearity best fit straight line 10 H20 0 1 FS 5 PSI 0 25 FS 30 PSI 0 1 FS 100 PSI 0 1 FS Hysteresis Repeatability 10 H20 0 2 FS 5 PSI 0 2 FS 30 PSI 0 05 FS 100 PSI 0 05 FS Long Term Stability per year 10 H20 0 5 ...

Page 51: ... two pieces of permanent protective tubing covering the external ports Never remove these tubes attach extension tubes to this permanent protective tubing 1 Connect the interface cable to the logger and to the serial port of your computer 2 Run TrendReader to communicate with the logger The logger has been shipped calibrated and with the appropriate equation See below for pressure ranges and their...

Page 52: ... times full scale Media Non corrosive gases and dry air Temp Range Operating 40 to 70 C 40 to 158 F Compensated 0 to 70 C 32 to 158 F Thermals Accuracy 0 5 FS over compensated range Nonlinearity 0 05 FS best fit straight line Hysteresis and Repeatability 0 05 FS typical Long Term Stability 0 5 FS Pressure Ranges and their Equations Range in W C Equation Accuracy 0 5 to 0 5 13 0 05 1 to 1 13 0 05 2...

Page 53: ...fferent types of thermocouples you want to use refer to the Specifications section 1 8 2 Setup The internal thermistor temperature channel for the SmartReader Plus 5 is used to simulate a reference junction for the thermocouples it must always be enabled Channel Description Equation 0 Internal Temperature 45 3 Thermocouple 1 see SmartReader Plus 5 Specifications 5 Thermocouple 2 see SmartReader Pl...

Page 54: ...hannel refer to the Specifications section 3 Check that you have the thermocouple s polarity correct by warming its tip You will see the Realtime temperature increase if the wires are connected correctly If the temperature decreases reverse the connections NOTE The inputs are not isolated from each other they use the same common terminal internally This means that the thermocouple tips cannot be t...

Page 55: ...adjust the calibration values on a SmartReader Plus 5 thermocouple logger follows For each active channel 1 Install the thermocouple and set the proper equation number for that thermocouple type Set the TrendReader software into Realtime mode 2 Using a valid low reference temperature as low as possible observe the Realtime reading and adjust the Low calibration value until the logger displays the ...

Page 56: ...tion compensation 1 9 2 Setup The internal thermistor temperature channel for the SmartReader Plus 6 is used to simulate a reference junction for the thermocouples it must always be enabled Channel Description Equation 0 Internal Temperature 45 1 Thermocouple 1 see SmartReader Plus 6 Specifications 2 Thermocouple 2 see SmartReader Plus 6 Specifications 3 Thermocouple 3 see SmartReader Plus 6 Speci...

Page 57: ...olarity correct by warming its tip You will see the Realtime temperature increase if the wires are connected correctly If the temperature decreases reverse the connections NOTE The inputs are not isolated from each other they use the same common terminal internally This means that the thermocouple tips cannot be touching each other If they are touching or are fastened to a conducting surface like ...

Page 58: ...uple type Set the TrendReader software into Realtime mode 2 Using a valid low reference temperature as low as possible observe the Realtime reading and adjust the Low calibration value until the logger displays the reference temperature 3 Using a valid high reference temperature as high as possible observe the Realtime reading and adjust the Mid calibration value until the logger displays the refe...

Page 59: ...orks Voltage channels use a pre amplifier to provide a high input impedance and adjust the signal for maximum resolution by the A D converter All digital values are converted to their proper engineering units by equations in TrendReader software Current flow through a loop is logged by measuring the voltage drop across an internal 20 ohm input resistor This voltage drop is amplified to use the ful...

Page 60: ... into the proper engineering units required for example a 4 20mA signal representing 0 to 10 000 l min For help writing these equations refer to the TrendReader guide 5 Decide how you are going to power your transducers if required You can for example use a standard power supply and create a circuit like that shown in Figure 7 2 Figure 7 2 Transducer Power Supply Connection 6 Connect your transduc...

Page 61: ...the power supply or battery and any of the transducers being logged by the SmartReader Plus 7 2 The 200mV channels float when no connection is made to them They can be expected to read a positive voltage when left unconnected When connected however they will read the correct input voltage 3 The 25mA channels read positive current only Make sure to observe polarity If you are using both channels si...

Page 62: ... n a 25mA 5V 0 to 100mA n a 25mA 10V In the above table the Range column lists examples of input signals that you may wish to monitor using your SmartReader Plus 7 The Standard column lists the channel you would normally choose to monitor that particular signal The Alternative column lists other channels that can be used to monitor the same input signals In most cases these channels will need to b...

Page 63: ...0mA current simply by putting a 100 ohm resistor minimum rating 2 watts between the 10V and Common terminals 5 Volt 2 5V Channels The 5 volt and 2 5 volt channels can be modified to span higher ranges greater than 5 and 2 5 volts DC respectively by adding a single resistor in the same way as shown for a 10V channel in Figure 7 3 to the 5V and 2 5V terminals The value of the resistor R can be calcu...

Page 64: ... across the input terminals as shown in Figure 7 5 The value of the resistor R can be calculated by the following the formula below based on the desired current input range Iin in mA R 500 Iin 25 Where 500 max input voltage in mV 25 max current input in mA Make sure the resistor can withstand at least twice the power you will be sending it To calculate this use the following equation R I 2 P 2 i n...

Page 65: ... supply stores Ask for precision 1 metal film resistors with a temperature coefficient of less than 500ppm The most common ones are quite small and made in the form of a cylinder with axial leads To show the value of the resistor either there is a color code painted on each resistor in the form of bands a number followed by a letter stamped on them For resistors with a tolerance of 2 or looser the...

Page 66: ... relative humidity pressure speed pH and more You can obtain these from a wide variety of manufacturers or distributors An extensive listing of sensors and companies is published yearly by Sensors Magazine To figure out what to look for when choosing transducers it is helpful to know a few technical terms and how they relate to use with your SmartReader Plus 7 logger Excitation Voltage This term r...

Page 67: ... a 4 20mA output Three Wire Transducers Three wire transducers have three connections a supply excitation voltage input V IN an output voltage V OUT and a common COM You can usually tell if a transducer is 3 wire by reviewing the wiring diagram and looking for a single common connection Four Wire Transducers Four wire transducers fall into two categories line type and Wheatstone bridge types No mo...

Page 68: ...erved Overload Protection Voltage channels 40V Current channels 70mA both are reverse polarity protected Transducer Restrictions The use of one power supply common only is recommended to avoid ground loops or use loop isolators Specifications are subject to change without notice ...

Page 69: ...tend to monitor using TrendReader software Disable any channels you are not going to use to conserve memory 2 If you are using external channels make sure to use thermistor sensors appropriate for the measurements you want to take for assistance please refer to Appendix C Thermistor Temperature Probes Also confirm that the equation number you are using for each of your probes is correct 3 To conne...

Page 70: ...o get at locations such as in ductwork or under pipe insulation For more information on choosing and using thermistor probes refer to Appendix C Thermistor Temperature Probes You can purchase additional screw type terminal block connectors for your SmartReader Plus 8 These make it easy to permanently install sensors around buildings and systems Simply wire them to the unconnected blocks and when y...

Page 71: ...cts and or the occurrence of DC voltage pulses Each channel has a selectable slow or fast input The SmartReader Plus 9 can only count pulses from one input at a time on each channel The pulse logger can count up to 4095 switch contact closures or pulses over any sampling interval For example if you select a sixteen second sampling interval the SmartReader Plus 9 can record a maximum of 255 closure...

Page 72: ...n the type of switches and logic signals that will work Key things to note are If you are going to be monitoring the opening and closing of switches there must not be a power source connected to the contacts the contacts must be dry If you wish to monitor a circuit that produces pulsed signals then the low level must fall between 0 and 0 5 volts DC and the high level must be between 4 5 volts and ...

Page 73: ...ust not exceed channel range the total count will stop at 4095 Connections Removable screw type terminal strip Switch Inputs Input type Uncommitted dry contacts relay or switch Excitation 5 microamps contact current 3 6 volts open circuit Contacts Sealed gold plated recommended Voltage Input Input type Active logic signals Input Voltage 0 to 0 5 volts DC low 4 5 to 24 volts DC high Specifications ...

Page 74: ...martReader Plus 10 1 13 1 Description Two three and four wire RTDs may be used with the SmartReader Plus 10 however four wire RTDs produce the highest accuracy RTDs with a Temperature Coefficient Resistance TCR of 0 00385 can be used with this data logger 1 13 2 Setup 1 Connect the RTDs to the terminal strip The connection varies depending on the type of RTD used NOTE For the best results connect ...

Page 75: ...fications are for 4 Wire Platinum 100 Ohm 0 C TCR 0 00385 4 Wire Platinum 1000 Ohm 0 C TCR 0 00385 Description Value SIG Input Impedance 1 Meg ohms SIG Input Impedance 1 Meg ohms Excitation Current 1mA Temp Range 100 1000 W probes 230 to 300 C 382 to 572 F Accuracy 100 1000 W 0 3 C 0 54 F resolution or 0 06 full scale resolution Resolution 100 W 1000 W 0 14 C 0 25 F Resistance Range 100 W 5 to 210...

Page 76: ... If the sample is out of tolerance then the logger will start a delay timer to allow the environment to return to normal limits If the environment does not return to normal limits the alarm will be triggered and the Alarm LED will begin to flash Once an alarm is triggered it is locked and will not clear until the logger is cleared or set up Flash Delay The Flash Delay is the maximum allowable peri...

Page 77: ...e plastic bag during non use to maximize the in calibration life of the RH sensor 1 14 3 Accessories You can obtain replacement RH Sensors remote temperature probes temperature and relative humidity probes for use with your Conservation Logger The Conservation Logger can also be combined with the Telaire 7001 Handheld Monitor 1 14 4 Relative Humidity Calibration Each relative humidity sensor has b...

Page 78: ...vation Logger measure and record temperature and RH only in one location They do not in any way represent an overall reading If you decide to check the calibration of your Conservation Logger RH sensor using a Sling Psychrometer keep in mind the following Any instrument that requires a person to be present at or in very close proximity to the RH sensor in order to get a reading will have a measure...

Page 79: ...r should not be subjected to liquid immersion or exposed to high concentrations of organic solvents corrosive agents sulfur gases and strong acids or bases Dust settling on the sensor surface will not affect sensor performance except possibly to decrease the speed of response Chemical Tolerances Limits for different chemical groups 1 Organic solvents typically 1 000 10 000 ppm 2 Corrosive agents s...

Page 80: ...ce you must change the channel s equation number to the one for resistance To do this select Equation 44 Resistance when setting up the logger in TrendReader software The highest resolution of the resistance measurements occurs at a 10k ohms midpoint 1 15 2 Monitoring Switch Status You can also use your SmartReader Plus 1 2 4 and 8 model loggers to record the status of uncommitted mechanical switc...

Page 81: ...with your data logger keep in mind that the logger will not detect more than one change per sample period For this reason use a fast sample rate if you expect the switch to open and close frequently The type of graph produced when monitoring switch status is a square wave that rises to a maximum value when the switch is closed and falls to a minimum value when the switch is open ...

Page 82: ...e thermometer preferably one with 0 1 C increments or better a bucket crushed or chipped ice a pot of boiling water a digital multimeter preferably one with 0 1 resolution or better Test Procedure Make sure the thermistors and leads you want to test are properly potted waterproofed insulated or otherwise protected against moisture You should not dip an unprotected thermistor in water since the wat...

Page 83: ...sure you do not introduce the sensors to rapid changes in temperature for example from ice bucket right into the boiling water Calibration Procedure for Temperature Equation 45 This procedure describes how to calibrate equation 45 in TrendReader software Normally you would calibrate a sensor by exposing it to 3 temperatures 0 25 and 100 C and entering the difference of Measured Temperature Actual ...

Page 84: ...s occur at the known temperatures 8 Add three compound lines On the graph add the three compound lines Each line should use the Thermistor equation you just created For each of them set the Source0 variable to Constant The value of Constant should be 16 24 for the first line 127 5 for the second line and 195 194 for the third line These values correspond to the byte value that corresponds to 100 2...

Page 85: ...the test chamber Wait 20 minutes 3 Adjust the chamber to 20 RH and wait for 20 minutes The wait is necessary to ensure the chamber has adequate time to settle in at the desired level 4 Adjust the chamber to 80 RH and wait an additional 20 minutes 5 Remove your logger or RH module from the test chamber and backup the recorded information to your computer If you are working with more than one logger...

Page 86: ...m the solution is not saturated and more salt must be added There must be crystals remaining on the bottom but they must not be exposed above the water level 4 Put a nail through the jar lid and bend into a small hook Tape the head of the nail or use rubber cement to create an airtight seal of the opening The logger with RH sensor or EH 020A can be inserted into the jar by first hanging it on the ...

Page 87: ...t relates to the 33 RH level in the test chamber Use the mouse to find the byte value recorded during the latter part of the minimum two hour test portion refer to step 5 Record this as the bL reading 8 Zoom in on the section that relates to the 75 RH level in the test chamber Again use the mouse to find the byte value recorded at the end of the minimum two hour test refer to step 5 Record this va...

Page 88: ...n be used for very low temperature applications down to 80 C 112 F or with special probe configurations in environments up to 450 C 850 F Thermistors with consistent properties for a given type are readily available These interchangeable thermistors can be substituted without recalibrating the logger 1 17 3 ET Series Temperature Probes The ET Series External Temperature Probes provide added versat...

Page 89: ...ure on human and animals ET 016 SMP is used to measure pipe surface temperature It wraps around any pipe less than 2 in diameter If your needs for temperature measurement do not quite fit the ET series profile you may consider using a different type of probe The Custom Probes section in this chapter describes how you can work with other commercially available thermistor probes from many different ...

Page 90: ... the tip of the probe to the pipe for a surface conduction temperature for best thermal conductivity epoxy the probe tip directly to the pipe and replace the pipe insulation back over top You can also easily measure duct temperatures by simply drilling a hole in the duct and inserting your ET probe 1 17 5 Specifications ET 016 General Purpose Probe Description NTC thermistor and cable potted into ...

Page 91: ...below 0 C may result in some mechanical damage due to thermal contraction effects ET 004 Low Temperature Probe Description NTC thermistor and cable potted into the end of a 89mm 3 long tapered stainless steel penetration tip with 89mm 3 long by 19mm diameter tapered plastic handle R25 Value 2 252 ohms Equation 46 Range 60 to 55 C 75 to 130 F Resolution Refer to Figure C 2 Accuracy 0 2 C 0 4 F from...

Page 92: ...ion NTC thermistor and cable potted into the end of a 22mm 7 8 long by 5mm 3 16 diameter nickel plated eyelet R25 Value 100k ohms Equation 47 Range 10 to 170 C 50 to 335 F Max Temp 190 C 375 F Resolution Refer to Figure C 3 Accuracy 0 5 C 0 9 F from the temperature values listed in Table C 1 over the range of 10 to 170 C 50 to 335 F Cable 6m 20ft standard length with twisted pair Teflon insulated ...

Page 93: ...e potted into the end of a 22mm 7 8 long by 5 5mm 7 32 diameter nickel plated eyelet R125 Value 26 266 ohms Equation 48 Range 70 to 255 C 155 to 490 F Max Temp 275 C 525 F Resolution Refer to Figure C 4 Accuracy 1 C 1 8 F from the temperature values listed in Table C 1 over the range of 70 to 255 C 155 to 490 F Cable 6m 20ft standard length with twisted pair moisture proof Teflon coated glass yarn...

Page 94: ...es as they relate to use with the SmartReader Plus 1 2 4 and 8 loggers For each thermistor probe model the table documents the complete set of temperature readings and corresponding thermistor resistances possible for the logger s eight most significant bits The 12 bit reading values are normalized to a full scale value of 255 this allows the same equation to be used for both 8 and 12 bit loggers ...

Page 95: ...SmartReader Plus Data Logger 86 Copyright 2010 ACR Systems Inc All Rights Reserved Table C 1 Temperature Resistance Values for ET Series Probes ...

Page 96: ...SmartReader Plus Data Loggers 87 Copyright 2010 ACR Systems Inc All Rights Reserved ...

Page 97: ...SmartReader Plus Data Logger 88 Copyright 2010 ACR Systems Inc All Rights Reserved ...

Page 98: ...SmartReader Plus Data Loggers 89 Copyright 2010 ACR Systems Inc All Rights Reserved ...

Page 99: ...ven custom probes to suit Contact your dealer for recommendations Writing Your Own Thermistor Equations Each thermistor temperature probe you use with SmartReader Plus data loggers must be associated with a standard or custom equation in TrendReader software This equation translates the internal digital logger readings for the specific thermistor or thermistor type into the units of your choice e ...

Page 100: ...1 18 1 AC Current and AC Voltage Recording ACR Systems stocks voltage transducers These devices connect directly to AC voltage sources and produce a linear output of 0 5V DC directly proportional to the input voltage They are average sensing transducers calibrated to indicate the RMS voltage We stock two models a 120V single phase model and a 480V 3 phase model Figure D 1 480V Power Systems ...

Page 101: ... Reading 0 1 RO Temp Effect on Accuracy 0 01 C Load with 0 1mA Output 0 10 000 ohms Load with 0 5VDC Output 5M ohms minimum Output Ripple Peak 0 25 RO Response Time 400 ms to 99 Standard Calibration Adjustments 10 of reading Frequency Range 60Hz Stability per year 0 25 RO Non Accumulative Operating Humidity 0 95 Non Condensing Dielectric Withstand 1500 VRMS at 60Hz Isolation Complete Input Output ...

Page 102: ...SmartReader Plus Data Loggers 93 Copyright 2010 ACR Systems Inc All Rights Reserved 3588 2 RS 4 4 W x 3 8 D x 4 7 H 112 x 97 x 119mm Figure D 2 120V Voltage Transducer Figure D 3 480V Voltage Transducer ...

Page 103: ...in its memory 1 19 2 Sample Rate Tables The following tables list the maximum time spans over which your SmartReader Plus will record readings The time spans depend on the number of channels enabled and the length of the sample rate A SmartReader Plus 32K has a memory capacity of 21 500 readings A SmartReader Plus 128K can store 87 000 readings and a 1 5 MB version can store 1 048 000 readings In ...

Page 104: ...eader Plus 32K Sample Rate Table Two Channels Enabled Sample Rate Days Hours Minutes Seconds 0 04 sec 0 0 7 10 0 1 sec 0 0 17 55 0 2 sec 0 0 35 50 0 5 sec 0 1 29 35 1 sec 0 2 59 10 2 sec 0 5 58 20 5 sec 0 14 55 50 8 sec 0 23 53 20 20 sec 2 11 43 20 1 min 7 11 10 0 2 min 14 22 20 0 5 min 37 7 50 0 10 min 74 15 40 0 30 min 223 23 0 0 1 hr 447 22 0 0 2 hrs 895 20 0 0 4 hrs 1791 16 0 0 Table F 3 Smart...

Page 105: ...in 49 18 26 40 30 min 149 7 20 0 1 hr 298 14 40 0 2 hrs 597 5 20 0 4 hrs 1194 10 40 0 Table F 4 SmartReader Plus 32K Sample Rate Four Channels Enabled Sample Rate Days Hours Minutes Seconds 0 04 sec 0 0 3 35 0 1 sec 0 0 8 57 0 2 sec 0 0 17 55 0 5 sec 0 0 44 47 1 sec 0 1 29 35 2 sec 0 2 59 10 5 sec 0 7 27 55 8 sec 0 11 56 40 20 sec 1 5 51 40 1 min 3 17 35 0 2 min 7 11 10 0 5 min 18 15 55 0 10 min 3...

Page 106: ... 33 20 20 sec 0 23 53 20 1 min 2 23 40 0 2 min 5 23 20 0 5 min 14 22 20 0 10 min 29 20 40 0 30 min 89 14 0 0 1 hr 179 4 0 0 2 hrs 358 8 0 0 4 hrs 716 16 0 0 Table F 6 SmartReader Plus 32K Sample Rate Six Channels Enabled Sample Rate Days Hours Minutes Seconds 0 04 sec 0 0 2 23 0 1 sec 0 0 5 58 0 2 sec 0 0 11 56 0 5 sec 0 0 29 51 1 sec 0 0 59 43 2 sec 0 1 59 26 5 sec 0 4 58 36 8 sec 0 7 57 46 20 se...

Page 107: ... 51 11 2 sec 0 1 42 22 5 sec 0 4 15 57 8 sec 0 6 49 31 20 sec 0 17 3 48 1 min 2 3 11 25 2 min 4 6 22 51 5 min 10 15 57 8 10 min 21 7 54 17 30 min 63 23 42 51 1 hr 127 23 25 42 2 hrs 255 22 51 25 4 hrs 511 21 42 51 Table F 8 SmartReader Plus 32K Sample Rate Eight Channels Enabled Sample Rate Days Hours Minutes Seconds 0 04 sec 0 0 1 47 0 1 sec 0 0 4 28 0 2 sec 0 0 8 57 0 5 sec 0 0 22 23 1 sec 0 0 4...

Page 108: ...SmartReader Plus Data Loggers 99 Copyright 2010 ACR Systems Inc All Rights Reserved 5 min 9 7 57 30 10 min 18 15 55 0 30 min 55 23 45 0 1 hr 111 23 30 0 2 hrs 223 23 0 0 4 hrs 447 22 0 0 ...

Page 109: ...ows the equipment needed for each network Network Configuration Maximum of Loggers Total Cable Lengt h Computer Modem Connection Network Cable Logger Connection s External Power to Last Logger Basic Network 3 100 ft 30m IC 101 Interface Cable CB 020 20 ft 6m Extension Cable YA 200 Y Adaptor Cable Optional Modular Network 10 1000 ft 300m IC 101 Plug and YA 201 Modular Y adaptor Modular Flat Cable Y...

Page 110: ...1 Basic SmartReader Plus Network 1 Insert Y adaptor cables YA 200 into each logger except the last one on the network 2 Connect the first logger to your computer or remote modem using the IC 101 interface cable If you are connecting to a modem refer to the TrendReader guide for information on how to set up a modem 3 Connect the loggers together with extension cables CB 020 ...

Page 111: ...face Cable each logger except the last one on the network one end of the last logger s Y adaptor cable 3 Cut and crimp the Modular Flat Cable NOTE Do not use modular cable crimped for telephone use as the wiring will be mirror image Instead crimp your own jacks using a straight through wiring method 4 Connect the IC 101 to the first logger and all the loggers to each other using Modular Flat Cable...

Page 112: ...r 3 Connect all the loggers to each other using shielded cable 4 Connect the Network Power Supply PS 201 to the last logger using the available end of the Y adaptor cable 5 Plug the power supply into an electrical outlet 1 20 5 Connection Problems and Solutions Network communication can be affected by network cable length type of network cable number of loggers on network interference from electri...

Page 113: ...c All Rights Reserved 1 Slow the baud rate 2 Use the PS 201 Power Supply connected to the last logger on the network or anywhere along the line wherever the lone voltage may sag below 4 5VDC 3 Reroute the cable to avoid electrical interference 4 Use shielded cable ...

Page 114: ... Sensor 28 38 42 RTD Resistance Temperature Detector 65 S Sample Rates 94 SmartReader Plus Alarms 8 Approvals 1 Calibration 8 Channel Alarms 21 Channel Calibration 21 Channel Information 19 Channels 8 19 Data Logger 1 Description 1 Dialout 8 Fast 8 Fast Sampling 10 Features 1 Introduction 1 Logger 1 Logger Alarms 14 Logger Connection Settings 22 Memory 8 11 Operation 1 Readings 1 Sampling 8 10 Set...

Page 115: ...Index 106 Copyright 2010 ACR Systems Inc All Rights Reserved Thermocouple E Type 44 47 J Type 44 47 K Type 44 47 S Type 44 47 T Type 44 47 Transducer 50 Transmitter 50 V Voltage 33 50 ...

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Page 117: ...umbia Canada V3W 1K7 Telephone 604 591 1128 North American Toll Free 1 800 663 7845 General Enquiries Email enquiry acrsystems com Fax 604 591 2252 www acrsystems com Sales Department Email sales acrsystems com Customer Service Email customerservice acrsystems com ...

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