PT100 Temperature Sensor User Manual
Contents
1. Datalogger Wiring Diagram 21 PRECISELY MEASURED instrumentation and monitoring art Overview Contents This section contains the following topics TOPIC SEE PAGE Introduction Warranty Sc ee nn ra Oe The PT100 Temperature Sensor Details of the PT100 Temperature Sensor Introduction Important Information The following symbols are used throughout the manual IMPORTANT INFORMATION PRODUCT CHANGES WARRANTY DISPOSAL OV AD QUESTION WARNING Important Failure to adhere to the warnings in this manual may result in network disruption and possible data loss Failure to observe the warning may result in injury product malfunction unexpected readings or damage to the product that may invalidate its warranty Tips give additional information that may be helpful when using a PT100 Temperature Sensor Soil Instruments has an on going policy of design review and reserves the right to amend the design of their product and this instruction manual without notice Refer to our terms and conditions of sale for warranty information The batteries are a consumable item and are excluded from the warranty Products marked with the gum symbol are subject to the following disposal rules in European countries e This product is designated for separate collection at an appropriate collection point e Do not dispose of as household waste For more information conta2. not properly connected the readout will display O C for open circuit until the problem is resolved if the readout is in MAX MIN mode O C will continue to be displayed even after the open circuit has been cleared If the sensor is out of range the readout will display OUT The key will hold the display and prevent any changes When activated the symbol will appear on the display press the again to return to the normal display The readout has the option of displaying readings in C Centigrade or F Fahrenheit The desired unit is set by pressing the key When the required unit is selected the display will show C or F respectively and the setting will be retained The SpeedRead function can be used to measure poor thermal conductivity items as it enables an indicative reading within 14 seconds however using this function will reduce the accuracy TEC To correctly use the SpeedRead method the sensor must be in good thermal contact with the medium to be measured prior to activating the SpeedRead function The difference between the initial sensor temperature and the medium under test is first required using a steep temperature gradient 15 16 RANGE LOCK Once the sensor has been placed into the medium to be monitored press the gt gt key The gt symbol will appear and FASt will flash on the display until the correct reading is shown and the symbol is displayed The reading will then a
3. SOil INSTRUMENTS Man 239 PT100 Temperature Sensor User Manual Soil Instruments Limited has an ongoing policy of design review and reserves the right to amend these specifications without notice Man239 PT100 Temperature Sensor MN0814 Rev1 0 3 What s this manual about This manual tells you about the PT100 Temperature Sensor and how to use it to measure temperature in concrete rock and soil Who does this apply to Installers field engineers and technicians using the PT100 Temperature Sensor Welcome Thank you for choosing the PT100 Temperature Sensor This manual has been written to help you utilise all of the functions of the PT100 Temperature Sensor Please read this manual thoroughly before use to help avoid any problems and keep it handy when using the PT100 Temperature Sensor PT100 Temperature Sensor he PT100 Temperature Sensor is used to monitor temperature in concrete rock and soil The sensor is ideal for monitoring temperature during concrete curing for evaluating seasonal variations within ground and structures and to interpret temperature related stress and volume changes in dams The PT100 Temperature Sensor consists of a platinum element that changes resistance with temperature and the resulting resistance change is converted to temperature using a handheld readout or data acquisition system The element incorporates platinum as this is a superior chemically inert material t
4. by the connecting cable housing construction therefore our recommended range is 20 to 100 C Details of the PT100 Temperature Sensor Resistance element RT Power supply Bridge output 10 Quick Start Guide to Using the PT100 Temperature Sensor BEFORE YOU GOTO SITE STEP Follow the precautions outlined in this manual at all times to properly maintain the PT100 Temperature Sensor Do not drop the sensor the temperature sensor may malfunction if subjected to strong shocks or vibrations Do not immerse the handheld readout the readout has been designed to be water resistant to rain and jets of water but may malfunction if fully immersed under water Keep the handheld readout away from strong magnetic fields do not use or store this device in the vicinity of equipment that generates strong electromagnetic radiation or magnetic fields Do not expose the handheld readout to extremes of temperature do not expose to extreme hot or cold temperatures for long periods of time Unpack the PT100 Temperature Sensor and handheld readout and perform the following equipment test and setup procedure ACTION Remove the two screws at either side of the battery compartment and remove the cover nsert two AA batteries into the readout following the instructions on the battery housing ensuring the batteries are placed with the correct polarity Replace the battery compartment cover Replace the two screws ma
5. ct Soil Instruments or the local authority in charge of waste management System Description Things You Need to Know About the PT100 Temperature Sensor FEATURES e High accuracy and repeatability e Predictable change in resistance e Long term stability over a wide temperature range e Suitable for manual or remote reading and datalogging Strong screened and flexible cable BENEFITS e Precise high quality data e Reliable data that is easy to interpret e Suitable for long term monitoring due to stable drift free readings e Can be read with a handheld readout or automated using data acquisition software such as Argus monitoring software e Can be used with long cable lengths up to 600m System Components THE PT100 The Soil Instruments PT100 Temperature Sensor uses a three wire TEMPERATURE configuration to minimise the effects of lead resistance therefore SENSOR providing higher accuracy and repeatability The two leads to the sensor are attached to adjoining arms with a lead resistance in each arm of the bridge which cancels out any resistance errors as the two lead resistances are precisely the same The PT100 temperature sensor consists of a 1000 platinum sensing resistor RTD connected to a 4 core polyurethane cable encapsulated within a 10mm diameter Stainless Steel housing The 65 and sensing element has a theoretical sensing range of 200 to 0 C however its practical range is limited
6. d on and off using the ON and OFF keys If you require the backlight press and hold the ON key to activate this function The readout will automatically switch itself off after 12 minutes of inactivity unless the device is in MAX MIN mode or any key is pressed during this time This function can be disabled by holding down the key when the unit is switched on the function will then be de activated until the readout is manually switched off The readout will automatically switch off after 12 minutes unless any key is activated or the instrument is in MAX MIN mode his function can be disabled by holding down the key when the unit is switched on To turn on the backlight press and hold the ON key MAX MIN RECORDER OPEN CIRCUIT OUT OF RANGE DISPLAY HOLD SETTING THE TEMPERATURE UNIT SPEEDREAD FUNCTION he MAX MIN recorder stores the maximum and minimum temperature readings To start MAX MIN recorder press the key The readout will display alternating AV symbols and the current reading Press the key again to display the maximum temperature reading the A symbol will be displayed Press the key again to display the minimum temperature reading the V symbol will be displayed To reset the MAX MIN recorder function switch the readout off Some functions may be unavailable when information is stored in MAX MIN mode to prevent the parameters mixing whilst recording If the sensor is
7. ding on the cable length and the precision required You can find the three options and wiring for each in Appendix A Please refer to Part IV Appendix A Datalogger Wiring Diagram in this manual for more details 17 Part Ill Maintenance Guide Contents This section contains the following topics TOPIC SEE PAGE Maintaining the PT100 Temperature Sensor Cable Maintenance Maintaining the PT100 Temperature Sensor Follow the precautions outlined in this manual at all times to properly maintain the PT100 Temperature Sensor CABLE The PT100 Temperature is a sensitive piece of equipment and must be MAINTENANCE handled with care ensure that you adhere to the following precautions when handling the instrument to maintain full working order e Do not drop the sensor the temperature sensor may malfunction if subjected to strong shocks or vibrations Do not immerse the handheld readout the readout has been designed to be water resistant to rain and jets of water but may malfunction if fully immersed under water e Keep the handheld readout away from strong magnetic fields do not use or store this device in the vicinity of equipment that generates strong electromagnetic radiation or magnetic fields e Do not expose the handheld readout to extremes of temperature do not expose to extreme hot or cold temperatures for long periods of time BATTERY The symbol on the readout display i
8. hat has the most stable resistance over the largest temperature range This allows for a more predictable change in resistance with a higher degree of accuracy and repeatability over a far wider temperature range PT100 Temperature Sensors provide high accuracy with low drift making them more suitable than Vibrating Wire and Thermocouple sensors for precision applications Contents PART OVERVIEW Introduction Important Information Product Changes Warranty Disposal System Description Things You Need to Know About the PT100 Temperature Sensor Features Benefits System Components The PT100 Temperature Sensor Details of the PT100 Temperature Sensor Quick Start Guide to Using the PT100 Temperature Sensor Before You Go to Site When You Are in the Field PART Il DETAILED PT100 TEMPERATURE SENSOR USER GUIDE Operating the Handheld Readout Installing the Batteries into the Handheld Readout Menu Display Overview On and Off Functions ax Min Recorder Open Circuit Out of Range Display Hold Setting the Temperature Unit Speedread Function Range Lock Connecting the Temperature Sensor Connecting to Readout Via Lead Connecting the Sensor to a Datalogger COTO O COMCO Co Com I 1 1 Oy 1S 1S em eye en ap al ai Wal Wal eal ts a ASS ey ee S PART III MAINTENANCE GUIDE 18 Maintaining the PT100 Temperature Sensor 19 Cable Maintenance 19 Battery Replacement 19 PART IV APPENDICES 20 Appendix A
9. king sure they are fully tightened Carefully line up the four pin plug with the socket on the top of the eadout and push together once inserted tighten up the thumb screw on the plug until secure Connect the pre prepared wires from the temperature sensor to the corresponding crocodile clips Select the desired temperature units by pressing the gy key The selected unit is confirmed by C or F on the display and once set is retained when the instrument is switched off Check the readout is displaying a stable reading for the temperature sensor Ensure the screws holding the battery compartment are securely tightened when inserting or changing the batteries to maintain the waterproof rating WHEN YOU ARE Soil Instruments recommend a basic skill level for using the IN THE FIELD PT100 Temperature Sensor ACTION Place the PT100 Temperature Sensor into the medium to be monitored Connect the pre prepared wires from the temperature sensor to the corresponding crocodile clips The readout will automatically switch off after 12 minutes unless any key is activated or the instrument is in MAX MIN mode This function can be disabled by holding down the key when the unit is switched on Please refer to Part IV Appendix A Datalogger Wiring Diagram in this manual for more details 11 Part Il Detailed PT100 Temperature Sensor User Guide Contents This section contains the fol
10. lowing topics SEE PAGE Operating the Handheld Readout INSTALLINGTHE The handheld readout is supplied with a rubber rugged case 1P65 67 BATTERIES INTO with a belt clip attached to the underside THE HANDHELD READOUT To install the batteries you must first remove the rubber case from the readout Once the case is removed you will find instructions for correct battery polarity on the back of the readout Remove the two screws at either side of the battery compartment and remove the cover nsert the batteries ensuring they are fitted with the correct polari before replacing the cover Replace the screws and tighten secure o maintain waterproofing lt Replace the rubber case u ry v 5 a Ensure the screws holding the battery compartment are securely tightened when inserting or changing the batteries to maintain the waterproof rating If the 2B symbol appears on the display replace the batteries 13 14 Menu Display OVERVIEW ON AND OFF FUNCTIONS The display screen presents a variety of options via icons depending on the function selected a full icon overview is illustrated in the following diagram Multifunction Multifunction Multifunction Time Log Numeric HH MM Entry Range Fast NE A R RT OK B oF j Battery Yes Celsius Cal Enter Channel Fahrenheit Selection The handheld readout is switche
11. ndicates that the battery levels REPLACEMENT are low and the batteries need replacing The readout requires two AA batteries STEP ACTION Remove the two screws at either side of the battery compartment and remove the cover Insert two AA batteries into the readout following the instructions 3 on the battery housing ensuring the batteries are placed with the correct polarity 19 Part IV Appendices Contents This section contains the following topics TOPIC SEE PAGE Appendix A Datalogger Wiring Diagram LOWER PRECISION HIGH PRECISION Lower Precision Measurements or short cable length Excitation Ex Single Ended SE Ground L Datalogger 10k PT100 Wiring Red White SE Black Green L Current limiting 10kQ resistor Tolerance 25 C 5 Power rating 0 25W Completion resistor Tolerance 25 C 0 01 Temperature coefficient 0 60 C 4 ppm C 55 125 C 8 ppm C Power rating 0 25W High Precision Measurements or medium to long cable length Excitation Ex Single Ended H Datalogger 10 L PT100 Wiring Red White Black 1i l 7 z Current limiting 10kQ resistor Tolerance 25 C 5 Power rating 0 25W Completion resistor Tolerance 25 C 0 01 Temperature coefficient 0 60 C 4 ppm C 55 125 C 8 ppm C Power ra
12. ting 0 25W 22 VERY HIGH PRECISION Very High Precision Measurements or very long cable length Excitation Datalogger Vx 10 H1 1000 Li pre H2 H PT100 II Wiring Red L White H2 Green L2 Black 1 Current limiting 10kQ resistor Tolerance 25 C 5 Power rating 0 25W Completion resistor Tolerance 25 C 0 01 Temperature coefficient 0 60 C 4 ppm C 55 125 C 8 ppm C Power rating 0 25W SUPPORT www itmsoilsupport com 44 0 1825 765044 Soil INSTRUMENTS Bell Lane Uckfield East Sussex t 44 0 1825 765044 e info itmsoil com TN22 1QL United Kingdom f 44 0 1825 744398 w wwwaitmsoil com Soil Instruments Ltd Registered in England Number 07960087 Registered Office 5th Floor 24 Old Bond Street London W1S 4AW
13. utomatically hold until the key is pressed after which normal mode will be resumed If the temperature of the sensor and the medium to be monitored is too similar a faster reading may not be possible in which case the symbol will be cancelled and the readout will automatically return to normal mode using the SpeedRead function will reduce the accuracy to 2 C All instruments have a 0 1 resolution from 199 9 C to 199 9 C 199 9 F to 392 8 F and a 1 resolution outside this temperature range The Range Lock will set the display to 1 resolution To set Range Lock press the A R key to cancel Range Lock press the A R key again A R will be shown on the display Connecting the Temperature Sensor CONNECTING TO READOUT VIA LEAD The readout is supplied with an expandable lead with a four pin male plug at one end and crocodile clips on the other CONNECTING THE SENSOR TO A DATALOGGER Carefully line up the four pin plug with the socket on the top of the readout and push together once inserted tighten up the thumb screw on the plug until secure tightened Ensure the four pin plug and socket connection are properly aligned before pushing together to avoid damage to the connector pins If the 8 symbol appears on the display replace the batteries To turn on the backlight press and hold the ON key There are three ways to connect the sensor to a datalogger depen
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