PT-104 Data Logger User's Guide
Contents
1. cables motors switchgear and other devices that may emit electrical noise Using screened cable with the screen grounded at one end may help to reduce interference When using long cables it is necessary to check that the measuring equipment is capable of handling the resistance of the cables Most equipment can cope with up to 100 Q per core The type of probe and cable should be chosen carefully to suit the application The main issues are the temperature range and exposure to fluids corrosive or conductive or metals Clearly normal solder junctions on cables should not be used at temperatures above about 170 C Sensor manufacturers offer a wide range of sensors that comply with BS1904 class B DIN 43760 These sensors offer an accuracy of 0 3 C at 0 C For increased accuracy you can use BS1904 class A 0 15 C or tenth DIN sensors 0 03 C Companies like Isotech can provide standards with 0 001 C accuracy Please note that these accuracy specifications relate to the SENSOR ONLY It is necessary to add on any error in the measuring system as well Related standards are IEC751 and JISC1604 1989 IEC751 also defines the colour coding for PRT sensor cables the one or two wires attached to one end of the sensor are red and the one or two wires at the other end are white usbpt104 en r2 Copyright 2013 Pico Technology Ltd All rights reserved PT 104 Data Logger User s Guide 15 Index A Access 3 Accura2. PT100 PT1000 Differential voltage or Resistance or Resistance or Resistance 4 Wire 3 Wire 2 Wire 1 White Connect to pin 3 Connect to pin 3 Do not connect 2 Red Red Red V 3 White White White V 4 Red Red Connect to pin 2 Gnd Single ended voltage connection Single ended mode allows you to double the number of channels from 4 to 8 It is supported by the driver so you can use it in your own applications It is not however supported by the PicoLog software DECEM ES EN 2 Note on Differential Voltage Mode The maximum input voltage range of the PT 104 Data Logger is 2 5 V Any voltage in excess of 30 V on any input pin may cause permanent damage to the unit In Differential Voltage Mode the input connector should be treated as a differential input with reference to ground Both inputs V and V must be zero volts or above it does not matter which input has the higher voltage and must remain within the input range A ground reference connection is also required for correct operation The ground connection of each mini DIN socket consists of a 100 Q resistor to mains earth ground through the USB cable outer braiding and the PC chassis Copyright 2013 Pico Technology Ltd All rights reserved usbpt104 en r2 10 Product information 2 7 Setting up Set up the PT 104 Data Logger as follows 1 From the File menu in the PicoLog software Recorder select New settings The Recording dialog box appears Recording
3. o 40 mA lt 2 W 20 C to 30 C for stated accuracy 0 C to 70 C operating 20 to 80 C storage en 2096 to 9096 RH non condensing operating Humidity range i 3 596 to 95 RH non condensing storage W 135 x L 184 x H 36 mm 5 31 x 7 24 x 1 42 in PicoLog data logging software Drivers for Windows XP SP3 Windows Vista Windows 7 Windows 8 Examples for C C Excel LabVIEW Ethernet port Conforms to IEEE 802 3 10Base T Compatible with 10 100 1000Base T networks Conforms to IEEE 802 3af Power over Ethernet PoE Conforms to USB 2 0 Full Speed 12 Mbps Quoted accuracy is for options marked Temperature range USB port Copyright 2013 Pico Technology Ltd All rights reserved usbpt104 en r2 6 Product information 2 3 Installing the driver The driver is installed automatically when you install the PicoLog software Alternatively you can download the driver from our website at http www picotech com 2 4 Connection USB port To use the PT 104 Data Logger connect its USB port to a USB port on your computer using the cable provided The first time you connect the device Windows will install the driver and then tell you that the device is ready for use You can then run the PicoLog software to start making measurements usbpt104 en r2 Copyright 2013 Pico Technology Ltd All rights reserved PT 104 Data Logger User s Guide 7 2 5 Connection Ethernet port Setup utility
4. rights reserved PT 104 Data Logger User s Guide 13 3 3 1 Background information Platinum resistance thermometers PRTs PRTs Platinum Resistance Thermometers offer excellent accuracy over a wide temperature range from 200 C to 850 C Sensors are interchangeable between different manufacturers and are available in various accuracy ratings in packages to suit most applications Unlike thermocouples it is not necessary to use special cables to connect to the sensor The principle of operation is to measure the resistance of a platinum element The most common type PT100 has a resistance of 100 Q at 0 C and 138 4 Q at 100 C The relationship between temperature and resistance is approximately linear over a small temperature range For example if you assume that it is linear over the 0 C to 100 C range the error at 50 C is 0 4 C For precision measurement it is necessary to linearise the resistance to give an accurate temperature The most recent definition of the relationship between resistance and temperature is International Temperature Standard 90 ITS 90 This linearisation is done automatically with software The linearisation equation is R R 1 A t B t C t 100 t A 3 9083 x 10 B 25 775 x 107 C below 0 C 4 183 x 10 above 0 C 0 For a PT100 sensor a 1 C temperature change will cause a 0 384 Q change in resistance so even a small error in measurement of the resist
5. B mode when it is being powered by Power over Ethernet PoE This could cause the unit to radiate N electromagnetic energy outside the limits permitted by FCC and EU regulations and could also cause it to produce spurious measurements It will not however cause permanent damage to the unit LAN connection To use the PT 104 Data Logger on a local area network LAN connect it to your network switch or network router using the Ethernet cable provided Direct connection You can also connect the PT 104 Data Logger directly to the network port on your computer For this connection you will need to use an Ethernet crossover cable not supplied Power over Ethernet PoE The PT 104 Data Logger can obtain its power from the Ethernet port as a Powered Device PD according to the PoE standard To use this feature you must connect the unit to Power Sourcing Equipment PSE such as a network switch router or power injector that also supports the PoE standard Any standard Ethernet cable up to 100 m about 328 ft in length can be used usbpt104 en r2 Copyright O 2013 Pico Technology Ltd All rights reserved PT 104 Data Logger User s Guide 9 2 6 Connection PRT inputs The PT 104 Data Logger is compatible with PT100 and PT1000 type platinum resistance thermometers PRTs Connect each one of these devices to the unit as follows Pin Connections to the PT 104 Data Logger Mini DIN socket Pin PT100 PT1000 PT100 PT1000
6. Before connecting to the PT 104 Data Logger s Ethernet port you must first configure the Ethernet settings Proceed as follows 1 Connect the unit to your computer using the USB port 2 Runthe Ethernet Settings utility There is a shortcut to this utility in the Pico Technology program group under the Windows Start menu 3 Set the Device Types control to PT 104 USB 4 The serial number of your device should appear in the device list Click the device once to select it 5 Setthe Enable Ethernet Settings check box 6 Enter the IP address and port that you wish to give the device You may need to ask your network manager for an IP address that does not conflict with existing devices on the network v Enable Ethernet Settings Device Operations IP Address 192 168 Listening Port 6554 Device Types PT 104 USB Y Refresh Save Close Exit 7 Click Save 8 You can now either continue to use the PT 104 Data Logger as a USB device or unplug the USB cable and reconnect the device using its Ethernet port Copyright O 2013 Pico Technology Ltd All rights reserved usbpt104 en r2 8 Product information Power saving tip p If you wish to stop using the PT 104 Data Logger in Ethernet mode you can use the Ethernet Settings utility to disable its Ethernet port This zi reduces the power consumption of the device when used in USB mode Ethernet and USB Do not use the PT 104 Data Logger in US
7. ance for example the resistance of the wires leading to the sensor can cause a large error in the measurement of the temperature For precision work sensors have four wires two to carry the sense current and two to measure the voltage across the sensor element It is also possible to obtain three wire sensors although these operate on the not necessarily valid assumption that the resistance of each of the three wires is the same The current through the sensor will cause some heating For example a sense current of 245 pA through a 100 Q resistor generates 6 uW of heat If the sensor element is unable to dissipate this heat it reports an artificially high temperature This effect can be reduced by either using a large sensor element or by making sure that it is in good thermal contact with its environment Using a 1 mA sense current gives a signal of only 100 mV Because the change in resistance for a degree Celsius is very small even a small error in the measurement of the voltage across the sensor produces a large error in the temperature measurement For example a 100 uV voltage measurement error would give a 0 4 C error in the temperature reading Similarly a 1 HA error in the sense current would give a 0 4 C temperature error Copyright 2013 Pico Technology Ltd All rights reserved usbpt104 en r2 14 Background information Because of the low signal levels it is important to keep any cables away from electric
8. cy 5 B Back panel 12 C Connection Ethernet 7 PRTs 9 USB 6 Connectors 5 Conversion time 5 Copyright 3 D Dimensions 5 E Environmental conditions 5 Ethernet connection 7 indicators 12 port 12 F Fitness for purpose 3 Indicators 12 Inputs impedance 5 number of 5 Installation 6 L LAN connection 7 Legal information 3 Liability 3 Linearity 5 M Mains voltages 2 Maximum input range 2 Mission critical applications 3 N Noise RMS 5 O Output 5 Overview 1 Overvoltage protection 5 P Pack contents 4 Power indicator 12 Power over Ethernet PoE 7 PRT background information 13 connection 9 R Range 5 Repairs 2 Resolution 5 S Safety warnings 2 Sensor 5 Setting up 10 Software 5 Specifications 5 Status indicator 12 Support 3 T Temperature coefficient 5 Trademarks 3 U Upgrades 3 Usage 3 USB connection 6 port 12 Copyright 2013 Pico Technology Ltd All rights reserved usbpt104 en r2 16 Index V Viruses 3 usbpt104 en r2 Copyright 2013 Pico Technology Ltd All rights reserved PT 104 Data Logger User s Guide 17 Copyright 2013 Pico Technology Ltd All rights reserved usbpt104 en r2 Pico Technology James House Colmworth Business Park ST NEOTS Cambridgeshire PE19 8YP United Kingdom Tel 44 0 1480 396 395 Fax 44 0 1480 396 296 www picotech com usbpt104 en r2 26 06 13 Copyright 2013 Pico Tec
9. hnology Ltd All rights reserved
10. mains voltages Take great care when measuring temperatures near mains line powered equipment If in doubt use a meter to check that there is no hazardous AC or DC voltage on the equipment If a sensor is accidentally connected to a mains voltage you risk damage to the converter and your computer and your computer chassis may become live resulting in injury to yourself and others DO NOT exceed the maximum input voltage range of the device Incorrect configuration or use of the device to measure voltages outside this range can be hazardous DO NOT rely upon the product s ground connection as a protective safety earth If there is any possibility of contact with hazardous voltages the equipment under test must be safely earthed DO NOT attempt to repair the unit The unit contains no user serviceable parts Repair or calibration of the unit requires specialised test equipment and must be performed by Pico Technology or its authorised distributors usbpt104 en r2 Copyright 2013 Pico Technology Ltd All rights reserved PT 104 Data Logger User s Guide 3 1 3 Legal information The material contained in this release is licensed not sold Pico Technology grants a licence to the person who installs this software subject to the conditions listed below Access The licensee agrees to allow access to this software only to persons who have been informed of these conditions and agree to abide by them Usage The software in this
11. method Real time continuous Action at end of run Stop v Restart delay I Minutes Use multiple converters Cancel Help 2 Click OK The Sampling Rate dialog box appears Sampling interval E Seconds Stop after 500 Samples Cancel C 100 Seconds Help Readings per As mary as possible sample As many as possible 3 Click OK The Converter details dialog box appears 4 From the Converter type drop down list select either PT 104 USB or PT 104 Ethernet The dialog box will then show the converter list as in the following examples Converter type PT 104 USB Converter type PT 104 Ethernet OK Port Cancel Port Cancel USB Devices Ethemet Devices Hel Hel Device Serial He Device Serial i 3 PT 104 USB TST00 006 PT 104 Ethernet TSTOO 003 PT 104 Ethernet TST00 015 PT 104 Ethernet TST00 012 PT 104 Ethernet TST00 004 PT 104 Ethernet TST00 013 Status ES mo 3 USB enumeration progress External IP address and listening port Refresh usbpt104 en r2 Copyright 2013 Pico Technology Ltd All rights reserved PT 104 Data Logger User s Guide 11 5 USB connection Select the device with the correct type and serial number and click OK Ethernet connection Any PT 104 Data Logger devices visible to your computer on your local network will appear in the list Select the device with the correct type and IP addres
12. mperature converter for use with PT100 and PT1000 type platinum resistance thermometers PRTs It can be used to measure temperature resistance and voltage In PT100 PT1000 and resistance modes the unit can use a two three or four wire circuit Four wire measurement gives the greatest accuracy In voltage mode the input connector can be treated as a differential input with ground or as two single ended inputs Programmer s Guide All the software that you need for everyday use of the PT 104 Data Logger is supplied with the unit For more advanced applications you can write your own software Information on programming is published in a separate guide 8 PT 104 Data Logger Programmer s Guide usbpt104pg en pdf Copyright 2013 Pico Technology Ltd All rights reserved usbpt104 en r2 2 Introduction 1 2 Safety warnings We strongly recommend that you read the general safety information below before using your product for the first time If the equipment is not N used in the manner specified then the protection provided may be impaired This could result in damage to your computer and injury to yourself and others DO NOT exceed the maximum input range The PT 104 Data Logger is designed to measure voltages in the range 0 to 2 5 V Any voltages in excess of 30 V may cause permanent damage to the unit DO NOT use in contact with mains line voltages This product is not designed for use on circuits carrying
13. ou are still dissatisfied please return the product and software to your supplier within 14 days of purchase for a full refund Upgrades We provide upgrades free of charge from our web site at www picotech com We reserve the right to charge for updates or replacements sent out on physical media Trademarks Pico Technology Limited PicoScope and PicoLog are trademarks of Pico Technology registered in the United Kingdom and other countries Windows XP Windows Vista and Windows 7 are trademarks of Microsoft Corporation Copyright 2013 Pico Technology Ltd All rights reserved usbpt104 en r2 Product information 2 Product information 2 1 Pack contents Please check that your PT 104 pack order code PP682 contains the following items 1 PP682 PT 104 Data Logger DO112 USB Installation Guide MI106 USB lead DI025 Software and Reference CD TA076 Ethernet patch cable usbpt104 en r2 Copyright 2013 Pico Technology Ltd All rights reserved PT 104 Data Logger User s Guide 5 2 2 Specifications Temperature Resistance Voltage Sensor PT100 PT1000 0 to 375 O 0 to 115 mV R S o o 0 296 0 to 2 5 V A 25 C Temperature 5 RMS Noise using filter 0 01 C 10 ppm 10 ppm Conversion Time Per Channel 720 ms Number of inputs Connectors 4 pin mini DIN USB or Ethernet Powered by USB or Ethernet USB 1 1 5V 10 100 mA USB 2 0 5 V 10 200 mA Ethernet 48 V 20
14. pico Technology PT 104 Data Logger User s Guide usbpt104 en r2 Copyright 2013 Pico Technology Ltd All rights reserved m Technology PT 104 Data Logger User s Guide I Contents AMAER o HetiODiss eoe ea Ue RE DOR UO I RAP UNI tees OD ies 1 1 Overview hee TEES 1 2 Safety warnings M 2 3 Legal Information 5 52 25e AR a LITTLE PE AS ame a teen mare 3 2 Product information ass ciis codes terea ce aa nave end ES PL e eR ati ia RR EYE ri ERREUR FRE S rte 4 TPackcontentS Wee Eee inertie eu rain Pe See Eo YN ON EE NR EE ramener mind va aee Ve een I PNE VIE 4 2 Specifications M A 5 3 Installing the nl LEOTE EIL ur in ML a aae aa a aa Ea aise hi ssh esse 6 4 Connection USB port 6 5 Connection Ethernet port see 7 6 Connection PRT inputs ss 9 7 Settingup 10 8 The back panel PER ARE RESINA doc NR SERPRO SER ON RASA TENDE URIA SUE GAR APRE TEAR EE 12 3 Back SrO Ural infoFriatiIOFi sa ick cuties ada Sd a q E A aaa 13 1 Platinum resistance thermometers PRTS ss 13 fo o gt 2 A oec DR PC 15 Copyright 2013 Pico Technology Ltd All rights reserved usbpt104 en r2 m Technology PT 104 Data Logger User s Guide 1 1 1 1 Introduction Overview The PT 104 Data Logger is a four channel high resolution te
15. release is for use only with Pico products or with data collected using Pico products Copyright Pico Technology Limited claims the copyright of and retains the rights to all material software documents etc contained in this release You may copy and distribute the entire release in its original state but must not copy individual items within the release other than for backup purposes Liability Pico Technology and its agents shall not be liable for any loss damage or injury howsoever caused related to the use of Pico Technology equipment or software unless excluded by statute Fitness for purpose No two applications are the same Pico Technology cannot guarantee that its equipment or software is suitable for a given application It is your responsibility therefore to ensure that the product is suitable for your application Mission critical applications This software is intended for use on a computer that may be running other software products For this reason one of the conditions of the license is that it excludes usage in mission critical applications for example life support systems Viruses This software was continuously monitored for viruses during production However you are responsible for virus checking the software once it is installed Support If you are dissatisfied with the performance of this software please contact our technical support staff who will try to fix the problem within a reasonable time If y
16. s and click OK If your device does not appear in the list type its IP address and port number in the boxes below the list When you click OK the PT 104 Data Logger channels window will appear Pot USB Edit Ch4 unused Disable m Mains frequency Help 50Hz C B Hz 6 In the PT 104 Data Logger channels window double click on Ch1 unused The Edit PT 104 Data Logger Channel dialog box appears Name Channel 1 Data type Pt100 x Circuit Four wire Filter Enable Cancel Help Options 7 Type in a name for the channel if required 8 Select the data type required i e temperature resistance or voltage 9 Select circuit for PT100 PT1000 and Resistance data types only Copyright 2013 Pico Technology Ltd All rights reserved usbpt104 en r2 12 Product information 10 Now click OK Readings from the PT 104 Data Logger should appear in the monitor window amp corda File Settings View SE Awaiting data filename Use File New data Alarm Channel Reading Units o Channell 26 666 EE 2 8 The back panel A Ethernet port B USB port C Ethernet Data indicator Flashes to indicate Ethernet data transfer D Ethernet Link indicator On when Ethernet port connected to an active device E Power Status indicator On when power is applied Flashes to indicate conversion in progress usbpt104 en r2 Copyright 2013 Pico Technology Ltd All
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