7007 Loop–Mate 2 - Electrocomponents
Contents
1. 20 19 975 20 025 30 29 975 30 025 40 39 975 40 025 50 49 975 50 025 With the Loop Mate 2 open circuit set the Function switch to RxSim Set the Display switch to of span The display should read 25 00 0 01 Switch off the unit Connect the precision dc current source to the input terminals of the Loop Mate2 Set the Function switch to RxSim Set the Display switch to of span Set the output of the dc current source to those shown mA input to Loop Mate2 in table 2 on the next page and check the display reading is between the Min and Max values Page 12 Table 2 of span MA input Min value Max value 0 4 0 05 0 05 25 8 24 95 25 05 50 12 49 95 50 05 75 16 74 95 75 05 100 20 99 95 100 05 If the reading on the Loop Mate2 s display is out of specification then adjustment of the calibration will be required see later in this section Checking Calibration Meas Volt DC Direct reading volts Connect the precision dc voltage source to the input terminals of the Loop Mate2 Set the Function switch to Meas Volt DC Set the Display switch to mA V Set the output of the dc voltage source to those shown Volts input to Loop Mate2 in table 3 below and check the display reading is between the Min and Max values Table 3 Volts input Min value V Max value V 0 0 025 0 025 10 9 975 10 025 20 19 975 20 025 32. non cond 25degC 14 x 6 6 x 2 7cm 6 x 2 5 x lin 280gm 1002 Page 3 7007 Loop Mate 2 Manual 1 3 Front Panel Controls 1 Connection Terminals Recessed 2 Display Switch 3 LCD Display 4 Function Switch Page 4 2 Loop Mate2 Operation 2 1 Function Select The Loop Mate2 has 3 functions Function 1 RxSIM Function 2 TxTEST Function 3 Meas Volt DC These are selected using the function select switch 2 11 Display Select For RxSim and TxTest the signal can be displayed either direct mA or of span These are selected using the display select switch which also turns off the Loop Mate2 2 2 Description of typical process loop components Loo p AA Rx Indicator Rx Indicator supply 4 20mA 0 10v Tx Transmitter Tx Transmitter 4 20mA 0 10v 4 20mA process loop 0 10v process loop meee ee a ee e 1 supply Rx PR on ilndicator Actuator supply Tai i renien Pi 420MA Process Controller a Oona OL L AOMARAMA 4 20mA Process loop and 4 20mA Control loop Can be used for closed loop control Page 5 Tx transmitter This component converts physical signals such as pressure temperature flow and level etc into the loop signals 4 20mA or 0 10v Rx receiver This component measures the loop signal and either displays it indicator or converts it to another form e g digital output for control purposes controller Process Control
3. 05 either in mA V or of span In addition to TxTest transmitter test and RxSim receiver simulation Loop Mate2 can also be used to measure dc voltage in the process loop Meas Volt DC up to 50v The Loop Mate2 is powered by the universally available PP3 type battery Re chargeable batteries can be used if required Loop Matez2 is a service and maintenance engineer s best friend It combines low cost and simple operation while providing more than enough accuracy for most applications Used in conjunction with Loop Mate1 they provide full process loop testing capabilities facilitating quick location of faults testing and recalibration It comes complete with carrying pouch leads clips and a user manual Page 2 1 2 Specification Functions Ranges Accuracy Indication Connections Power Carrying Pouch Leads Temperature co efficient Operating temp Storage temp Operating humid Dimensions weight RxSim TxTest Meas Volt DC RxSim 0 50mA or 0 100 4 20mA TxTest RxSim plus Internal 24v dc loop drive supply 0 25mA or 0 100 4 20mA Meas Volt DC 0 50v dc or 0 100 0 10v 0 05 of Span of span and 0 05 of Range mA V 4 5 digit LCD display Two 4mm recessed sockets PPS battery Leatherette material Includes compartment 4mm gold plated The unit stays within specification over operating temperature range 0 to 50 degC 30 to 70 degC 10 90
4. screws from the back of the case Position the Loop Mate2 so that the front panel is facing upwards Carefully lift the case lid The fuse is located below and to the right of the Display switch as shown in the picture below Fuse F1 100mA Rating Pull out the fuse and replace with one of the same value Replace the case lid and screw the four case screws into place Page 20 5 Guarantee amp Servicing Guarantee Period The Loop Mate2 is guaranteed against defects in materials and workmanship for a period of one year from its delivery to the customer During this period we will subject to the instrument not being damaged due to maltreatment or overload repair or replace it free of charge apart from shipping costs For repair under guarantee the instrument serial number must always be quoted together with details of the fault The purchaser of the instrument must prepay all shipping charges This guarantee is void if servicing or repair has been attempted by an unauthorized person or agent Service and Calibration Routine servicing and recalibration of your instrument is an essential part in the life of any calibration instrument This will ensure that your instrument is performing to its specifications All repairs are made using high grade and often specialised components to ensure on going accuracy and performance Our quality control ISO9001 ensures the work is undertaken to the highest standards When an
5. 0 29 975 30 025 40 39 975 40 025 50 49 975 50 025 Percentage of span Connect the precision dc voltage source to the input terminals of the Loop Mate2 Set the Function switch to Meas Volt DC Set the Display switch to of span Turn on the Loop Mate2 Set the output of the dc voltage source to those shown Volts input to Loop Mate2 in table 4 below and check the display reading is between the Min and Max values Page 13 Table 4 of span Volts input Min value Max value 0 0 0 05 0 05 25 2 50 24 95 25 05 50 5 00 49 95 50 05 75 7 50 74 95 75 05 100 10 00 99 95 100 05 If the reading on the Loop Mate2 s display is out of specification then adjustment of the calibration will be required see later in this section Page 14 4 2 Adjustment of Calibration When Loop mate 2 is found to be out of specification the procedures described in the following sections must be followed 4 21 Disassembling Loop Mate2 First remove the battery compartment cover and disconnect the battery as shown in section 3 11 of this manual Remove the 4 screws from the back of the case Position the Loop Mate2 so that the front panel is facing upwards Carefully lift the case lid Next reconnect the battery Page 15 4 22 Trimmer Locations used for adjusting the calibration VR5 Direct reading voltage adjust VR6 of spa
6. 7007 Loop Mate 2 Loop Voltage Current Simulator User Manual Time Electronics Ltd Unit 11 Botany Industrial Estate Tonbridge Kent TN9 1RH Tel 01732 355993 Fax 01732 770312 E Mail mail timeelectronics co uk Web Site www timeelectronics co uk V1 3b 28 08 07 Contents Introduction 1 1 General description 1 2 Specification 1 3 Front Panel Controls Loop Mate2 Operation 2 1 Function Select 2 11 Display Select 2 2 Description of typical process loop components 2 3 RxSim 2 4 TxTest 2 5 Meas Volts DC Power Supply 3 1 Battery Life 3 2 Battery Replacement Maintenance 4 1 Checking Calibration 4 2 Adjustment of Calibration 4 21 Disassembling Loop Mate2 4 22 Trimmer Locations 4 23 Reference voltage check and adjustment 4 24 RxSim TxTest calibration 4 25 Meas Volts DC calibration 4 26 Re assembly 4 3 Fuse Replacement Guarantee amp Servicing Page ROP COON OaOO All Time Electronics instruments are subject to continuous development and improvement and in consequence may incorporate minor detail changes from the information contained herein Page 1 1 Introduction 1 1 General Description Loop Matez2 is a dedicated loop signal indicator RxSim with an in built 24v loop drive supply TxTest The operator can select the loop type and also the type of units either direct mA or of span display The loop signal is shown on an easy to read LCD display to an accuracy of 0
7. instrument is returned for repair any product enhancements updates hardware and software will be done automatically Returning Instruments It is preferable to contact Time Electronics or their authorized agent to discuss any special paperwork customer declarations etc and shipping requirements Always include information about the service required and your company details including a contact name address phone number and email address Remember to include the name of the person you spoke to about the return When returning instruments please ensure that they have been adequately packed preferably in the original packing supplied We will not accept responsibility for units returned damaged Time Electronics Ltd Unit 11 Botany Industrial Estate Tonbridge Kent TN9 1RH Tel 44 0 1732 355993 Fax 44 0 1732 770312 E Mail mail TimeElectronics co uk Web Site www TimeElectronics co uk Page 21
8. lers This device usually contains both Rx signal loop and Tx control loop components which operate in separate loops The Rx and Tx can be either 4 20mA or 0 10v Loop excitation supply A DC power supply nominally 24v that drives the loop Page 6 2 3 RxSim function The unit displays the loop current in either mA 0 50mA or percentage of span 4 20mA depending on the position of the display select switch Operation e Connect the unit to the process loop observing the correct polarity e Set the function switch to RxSim e Turn the unit on selecting the desired display units using the display switch Note If the loop current is less than 4mA negative of span will be displayed See table below Loop Current mA Display Reading Open Circuit 25 00 1 18 75 2 12 50 3 06 25 4 00 00 ve Loop O Loop Mate2 excitation Pie supply i Tx ve Transmitter 4 20mA RxSim Connection Page 7 2 4 TxTest function With TxTest selected a loop excitation drive supply 24v is internally generated The display will show the loop current as either mA 0 50mA or percentage of span 4 20mA depending on the position of the display select switch Operation e Connect the unit to the process loop observing the correct polarity e Set the function switch to TxTest e Turn the unit on and select the desired display units using the display
9. n current offset adjust VR4 of span voltage adjust VR2 Direct reading current adjust Reference voltage VR1 of span current adjust Page 16 4 23 Reference voltage check and adjustment Set the function switch to RxSIM Set the Display switch to mA Select the voltage scale on the DMM e Connect a test lead from the DMM negative input to the Loop Mate 2 minus terminal Connect a test lead with a pointed probe to the DMM positive input Place the pointed probe on the pad near to VR3 as shown in the picture thus making contact with VR3 s middle pin The reading should be 1v Adjust VR3 until 1v is displayed on the DMM Page 17 4 24 RxSim TxTest calibration By calibrating RxSIM TxTest is also calibrated Direct reading mA Connect the precision dc current source to the input terminals of the Loop Mate2 Set the Function switch to RxSim Set the Display switch to mA V Set the output of the current source to 50mA dc e Adjust VR2 until the display reads 50 00 Percentage of span Offset calibration Before connecting the Loop Mate 2 to any test equipment Set the Function switch to RxSim Set the Display switch to of span The display should read 25 00 if not adjust VR6 until 25 00 0 01 is displayed Connect the precision dc current source to the input terminals of the Loop Mate2 Set the Function switch to RxSim Set the Display switch t
10. nction will shorten the battery life The unit will display low battery when the battery voltage is too low At this point replacement of the battery is necessary It is recommended that a spare battery be always carried in the compartment provided in the carrying pouch 3 11 Battery replacement Slide off the back cover of the case and remove the battery from its compartment Unclip the battery and replace it with a new PP3 as shown below Then slide the battery cover back into place The pictures above show the removal of the battery The reverse procedure should be used to replace the battery Page 10 4 Maintenance 4 1 Checking Calibration Calibration equipment required Precision dc current source e g Time Electronics 1024 Precision dc voltage source e g Time Electronics 5025 DMM with accuracy of 0 02 or better Examples of suitable instruments are Time Electronics 5075 or HP 34401A Calibration should be done at 20 C 5 deg C Checking Calibration RxSim Direct reading mA Connect the precision dc current source to the input terminals of the Loop Mate2 Set the Function switch to RxSim Set the Display switch to mA V Set the output of the dc current source to those shown mA input to Loop Mate2 in table 1 on the next page and check the display reading is between the Min and Max values Page 11 Table 1 mA input Min value Max value mA mA 10 9 975 10 025
11. o of span Set the output of the current source to 20mA dc Adjust VR1 until the display reads 100 00 4 25 Meas Volt DC calibration Direct reading volts Connect the precision dc voltage source to the input terminals of the Loop Mate2 Set the function switch to Meas Volt DC Set the Display switch to Volts Select 50v dc output on the precision voltage source e Adjust VR5 until the display reads 50 00 Page 18 Percentage of span Connect the precision dc voltage source to the input terminals of the Loop Mate2 Set the function switch to Meas Volt DC Set the Display switch to of span Select 10v dc output on the precision voltage source e Adjust VR4 until the display reads 100 00 Repeat the Direct reading and Percentage of span calibration procedures until neither require adjust This is required due to some interaction between the scales Page 19 4 26 Re assembly e Disconnect the battery after re calibration Refit the lid and screw the four case screws into place Replace the battery and battery compartment cover See section 3 11 4 3 Fuse Replacement The unit is fitted with a 100 mA fuse If no readings are displayed when using the RxSIM or TxTest function when connected to a known working process loop it is possible that the internal fuse has blown To replace the fuse First remove the battery compartment cover and disconnect the battery as shown in section 3 11 of this manual Remove the 4
12. switch Note If the loop current is less than 4mA negative of span will be displayed See table below Loop Current mA Display Reading Open Circuit 25 00 1 18 75 2 12 50 3 06 25 4 00 00 Transmitter 4 20mA Loop Mate2 TxTest Connection Page 8 2 5 Meas Volt DC function When the unit is set to Meas Volt DC it displays the voltage either as Volts 0 50v or percentage of span 0 10v depending on the position of the display select switch Operation e Connect the unit to the process loop observing the correct polarity e Set the function switch to Meas Volt DC e Turn the unit on selecting the desired display units using the display switch Meas Volts DC PVE 7 7 TX Transmitter O 0 10v Loop Mate2 ve Voltage loop TxTest connection Note The unit can be used to measure DC voltages up to a maximum of 50v DC Page 9 3 Power supply 3 1 Battery life A single PP3 battery powers the unit Types that can be used are Zinc Carbon 250mAh Alkaline 450mAh Lithium 1200mAh and rechargeable 150mAh For best performance Lithium batteries are recommended Under typical usage an Alkaline 450mA battery will last for approximately 14 16 hours of continuous operation Assuming the Loop Mate2 is used for approximately 3 hours per day the batteries will last for a week or more Continuous operation on the TxTest fu
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