Wireless Resistance Transceiver Manual
Contents
1. 27 Menu Map to the Abnormal Sampling Rate 27 Normal Upper and Lower Value 28 Menu to Normal Upper and Lower Value 29 Example of Condition Chatter without Time Deadband 30 Example of Condition Chatter Elimination Due to 20 sec Time Deadband 30 Menu to Units Sellllig oet teste et oi RE cede Sen tts 32 Menu Map to Sensor Setting 5 rette ea ERE 35 Menu to Offset Setting isk aire eo S RO DR Ce eat 36 Menu Map to T rimi Setting iiie tore tide re e e nema ad eam 37 M357 Rev E Page 5 Jowa USA Resistance Transceiver Installation and User s Guide Introduction The Wireless Resistance Transceiver is a reliable Radio Frequency RF transceiver and when coupled with a resistance tape level sensor it can be used to monitor a variety of tanks or processes in hazardous and hard to reach areas The time and expense of running wires often makes it difficult to measure parameters that have an economic impact on your plant operation but the Resistance Transceiver allows you to quickly and accurately monitor those levels at fraction of the cost which gives you bigger and faster returns on your2. M357 Rev E OPERATIONS SEQUENCE NEXT a ap au wD NEXT NEXT 5 _ Default of 613 OHVs NEXT CFU enter gt XXX Default of 55 OHMs NEXT CSPANCT evERS XXAUUXXC Default of 2 FEET NEXT Cex Figure 25 Menu Map to Sensor Setting Page 35 Jowa USA Resistance Transceiver Installation and User s Guide Setting a Measurement Offset For various applications the user may wish to display on offset value rather than the actual value To enter an offset navigate to the OFFSET command as shown in Figure 26 select the desired input to be offset Then enter the offset to be added or subtracted from the actual measured value The units will be the same as selected earlier under the setting the units of measure section ENTER USER PROMPTED FOR PASSWORD SET RF B NEXT SET PWD NEXT SET TAG SAMPLING t NEXT UNITS tt NEXT SENSOR tt z X OFFSET enter P XXXX XX ft in m Figure 26 Menu to Offset Setting M357 Rev E Page 36 Jowa USA Resistance Transceiver Installation and User s Guide Trimming the Measurement The Field Unit interface allows the user to set a one or two point correction curve for the sensor This process is often called trimming because the displayed value is trimmed up or down to reflect the actual value being applied To set a
3. EXIT Return to SAMPLNG menu UNITS Sets units of measurement SENSOR Sets sensor output limits gt ZERO Resistance at Zero Point gt FULL Resistance at Full Point gt SPAN Distance between Zero and Full Points OFFSET Creates an overall offset of the PV reading TRIM Sets two PV trim points according to applied values DEFAULT Resets ALL field unit settings to the factory defaults EXIT Return to CONFIG M357 Rev E Page 43 Jowa USA Resistance Transceiver Installation and User s Guide USER PROMPTEDFOR USERPROMPTED FOR Note If a menu is left PASSWORD g PASSWORD unchanged for 30 T MU NES Factory only seconds then the Field E Unit will return to the UHHWyevrens RF Default of RF OFF Operations Sequence chm s Default of 19 2K L baud Note The Baud Rate determines the maximum speed of the Transmission Rates and the Transmission Rates determine the minimum speed of the Sample Rates If a user enters a value that is not within these bounds the value of entered bound will be changed automatically to allow proper operation CST irr eres a b n ENABLED es i oaea o SE on aoe mimm EXT DISABLED 0 300 SEC DISABLED N Defaults of Disabled Default of 0 gt gt iim Ed pig lah DISABLED conf ERR NEXT Next Page M357 Rev E
4. FIELD UNIT IDENTIFICATION SETUP 13 SETTING THE FIELD UNIT USER PASSWORD 14 SETTING THE FIELD UNIT TAG NAME 15 MECHANICAL INSTALLATION 16 FIELD UNIT POSITIONING 16 A SIMPLE RF PLACEMENT TEST 18 ELECTRICAL INSTALLATION 19 M357 Rev E Page 3 Jowa USA Resistance Transceiver CONFIGURING FIELD UNIT SAMPLE SETTINGS SETTING THE NORMAL TRANSMIT RATE SETTING THE NORMAL SAMPLING RATE SETTING THE ABNORMAL TRANSMIT RATE SETTING THE ABNORMAL SAMPLING RATE SETTING THE NORMAL UPPER AND LOWER VALUES SETTING THE SMART RATE THRESHOLD SELECTING UNITS OF MEASURE SELECTING THE SENSOR OUTPUT LIMITS SETTING A MEASUREMENT OFFSET TRIMMING THE MEASUREMENT MAINTAINING THE FIELD UNIT CHANGING THE BATTERY APPENDIX A NAVIGATING THE USER MENUS APPENDIX B FIELD UNIT PARAMETER DEFAULTS AND LIMITS APPENDIX C FIELD UNIT MENU MAP APPENDIX D FIELD UNIT DISPLAYED MESSAGE DEFINITIONS M357 Rev E Page 4 Installation and User s Guide 20 20 21 25 26 28 31 32 33 36 37 38 38 41 42 43 46 Jowa USA Resistance Transceiver Installation and User s Guide Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Table of Figures Field Unit
5. Base Radio and Field Units unable to communicate due to obstructions or distance See Field Unit Guide Field Unit Placement section e Did you perform the Simple RF Placement Test See Field Unit Guide A Simple RF Placement Test section M357 Rev E Page 7 Jowa USA Resistance Transceiver Installation and User s Guide Configuring the Field Unit for RF Communications In order for the Field Unit and the Base Radio to communicate they must be on the same RF Channel and must be transmitting at the same Baud Rate While all Field Units and Base Radios are set to default configurations at the factory if any configuration differences are present the Field Unit will not be able to communicate to the Base Radio NOTE If you are unfamiliar on how to navigate the Field Unit menus please refer to Appendices A C Also BEFORE setting up and installing the Field Unit please setup and configure the Base Radio See the Wireless Base Radio Guide M356 for more details Field Unit Displayed Messages To turn the Field Unit on press the NEXT and ENTER buttons located on the front of the Field Unit just below the Liquid Crystal Display LCD screen for 1 second Turn on the Base Radio as well if you have not already done so The LCD will then display a Power Up Sequence and then go into an Operations Sequence These Sequences are seen below in Figure 1 SEN ERR LOW BAT OPERATIONS SEQUENCE Figure 1 Field Unit
6. Guide Battery Life Calculator 19 200 NORMAL Sensor various sensor sample rates it twice second once second 4 every 5 seconds Battery Life yrs RF Update Period seconds Battery Life Calculator 4 800 SLOW Sensor various sensor sample rates gt P twice second 4 once second H amp every 5 seconds 20 40 60 RF Update Period seconds Figure 12 Battery Life Charts Figure 13 shown below is an example of what happens when the Normal Sampling Rate is too large for the device being sampled Notice how the rise in the level falls between two normal samples and thus goes completely undetected M357 Rev E Page 22 Jowa USA Resistance Transceiver Installation and User s Guide 250 200 rile 150 Normal inches Sample 100 50 0 2 00 3 00 0 1 00 Time min With a Normal Sampling Rate of 30 Seconds Figure 13 Incorrect Normal Sample Rate Setting Figure 14 shown below is an example of what happens when the normal sampling rate is correctly set for the device that is being monitored Notice how this setting is able to sample the rise in the level 250 200 viel 150 Normal inches Sample 100 50 0 0 1 00 2 00 3 00 Time min With a Normal Sampling Rate of 15 Seconds Figure
7. and an underscore The underscore has a special meaning to the software inside the Field Unit For example if you have a Tag Name that is only 5 characters long then you do not want to wait for the rest of the 16 characters to be displayed on the LCD So if your Tag Name was TANK1 you would want to enter the Tag Name like this TANK1 E The software then recognizes this and only displays TANK1 and negates the 2 extra 7 character flashes TANK 1 becomes TANK 1 and so on Select the Tag Name you d like give the Field Unit and follow the Field Unit Menu Map below a nS NEXT NEXT JENTER XXXXXXX ENTER of b Figure 8 Menu Map to Set Tag Name Indicates that Menu is Disabled if Wireless Instrumentation Manager is used See Appendix A M357 Rev E Page 15 Jowa USA Resistance Transceiver Installation and User s Guide Mechanical Installation The Wireless Resistance Transceiver is a rugged device but it will give much better service if installed with careful consideration as noted in this manual They may be utilized for just about any installation so long as care is exercised to prevent exposing the sensing elements to excess stress or temperature Installation practices have a lot to do with these service parameters and the life that you can expect from your Wireless Resistance Transceive
8. the Field Unit will enter an Abnormal condition as seen below in Figure 20 Normal Upper Value Normal Lower Value set to 160 inches set to 75 inches 255 Abnormal Condition 200 Level 150 LEM cc dcc te inches 100 Normal Condition 50 m 3 00 Time min sec Abnormal Condition 0 1 001 Figure 20 Normal Upper and Lower Value Example The Normal Upper Value would be an indication that the level is high and the Normal Lower Value would be an indication that level is low Thus the normal operating condition for the application would be found in between the two Normal Values If your application only requires you to Sample and Transmit at one rate regardless of the condition simply disable both the Normal Upper Value and Normal Lower Value by pressing the NEXT button when the ENABLE question is displayed on the LCD To configure the values follow the Field Unit menu map shown in Figure 21 Indicates that Menu is Disabled if Wireless Instrumentation Manager is used See Appendix A M357 Rev E Page 28 Jowa USA Resistance Transceiver Installation and User s Guide NEXT NEXT NEXT NEXT ENABLED NTE L En Ec ENTER cum ED 0 300 SEC CENSET of 0 Defaults of Disabled C DISABLED Mac a Figure 21 Menu Map to Normal oem and Lower Value Settings When configuring the Normal Values you will prompted by the ENABLE DISABLE question on the LCD pressing ENTER while ENABL
9. to resolve this matter quickly over the phone Please note that the carrier will not honor any claims for damage unless all shipping materials are saved for their examination If damage is found during examining and removal of the contents save the packing material and the carton M357 Rev E Page 6 Jowa USA Resistance Transceiver Installation and User s Guide A Quick Start Guide To get the Field Unit up and running quickly follow the steps below NOTE If you are unsure how to perform a task please read the appropriate user manual section 1 Place the Field Unit in the desired location of operation 2 Turnon the Field Unit by pressing the two buttons for 1 second 3 The Field Unit Settings need to be configured as follows e Set RF CHAN to match the Base Radio RF CHAN e Set BAUD RT to match the Base Radio BAUD RT e Set RF ID to next consecutive available ID not 0 starting at 001 The Field Unit should now be configured for use The Field Unit will show the messages in the figure below Note that the POWER UP Sequence is only shown when the device is first turned on I POWER UP SEQUENCE t RF ERR SEN ERR LOW BAT If you are not receiving an RF OK message on the Field Unit check the following e 5 the Field Unit set to the above listed configurations e ls the Base Radio on e Are the Field Unit and Base Radio set to the matching configurations See Base Radio Quick Start Guide e Are the
10. trim point navigate to the TRIM menu as shown below and select the input to be trimmed Then select the point you wish to enter After selecting the point you will be asked to enter a value This value should be known value that you are applying to the Field Unit Once you have entered the applied value you will be prompted to apply the value and then accept the value via a yes or no question NEXT NEXT NEXT The user must apply the POINT 1 amp POINT 2 to the sensor then Corser select YES To save NEXT the point If ENTER is pressed while YES is being displayed the E value is saved Cri 3 oce RE ccs poro NEXT e 3000CXX enter APPLY Peter Y If ENTER is pressed while NO is being displayed the NEXT value is NOT saved RESET _JenteR NO7 penter YES NEXT This resets all the trim points to the factory settings including the ZERO Point Not the OFFSET Figure 27 Menu Map to Trim Setting M357 Rev E Page 37 Jowa USA Resistance Transceiver Installation and User s Guide Maintaining the Field Unit The Resistance Transceiver is extremely easy to maintain in that it requires no periodic calibration or system checks The Field Unit has a self diagnostic system which is constantly checking the internal system for you If any errors are found they are reported to you via the LCD or the Base Radio A simple yearly visual inspection for the following is all that is needed e 5 the Field
11. 14 Correct Normal Sample Rate Setting Once you have decided the proper time for the Normal Sampling Rate follow the Field Unit menu map shown in Figure 15 The factory default is 1 second M357 Rev E Page 23 Jowa USA Resistance Transceiver Installation and User s Guide e um eus ums ums uus ems uy ums cm ems a oe oe NEXT Default of 1 Second NOR SR wenP 1 10 SEC 15 SEC 20 SEC 30 SEC 1 MIN Figure 15 Menu Map to Normal Sample Rate Setting Note The Field Unit adjusts the menu options according to the previously set Baud Rate and Transmit Rate settings M357 Rev E Page 24 Jowa USA Resistance Transceiver Installation and User s Guide Setting the Abnormal Transmit Rate The Abnormal Transmit Rate is identical to the Normal Transmit Rate with one exception The Abnormal Transmit Rate only applies while the Field Unit is in an Abnormal condition see Setting Normal Upper and Lower Values This allows you to increase or decrease the frequency of information you receive depending on the operating conditions of the device being monitored Note If you do not need more or less frequent samples and updates from a Field Unit for a given application then there is no need to complete this section Simply set the Normal Transmit and Sample Rates to the desired speeds and make sure that the Normal Upper and Lower Values are configured to Disabled In order to properly set the Abnormal Transmit
12. 5 SEC 20 SEC 40 SEC 1 MIN Figure 17 Menu Map to Abnormal Transmit Rate Setting Note The Field Unit adjusts the menu options according to the previously set Baud Rate settings Setting the Abnormal Sampling Rate The Abnormal Sampling Rate is identical to the Normal Sampling Rate with one exception The Abnormal Sampling Rate only applies while the Field Unit is in an Abnormal condition see Setting Normal Upper and Lower Values This allows you to increase or decrease the frequency the Field Unit checks the monitored equipment depending on the operating conditions Note If you do not need more or less frequent samples and updates from a Field Unit for a given application then there is no need to complete this section Simply set the Normal Transmit and Sample Rates to the desired speeds and make sure that the Normal Upper and Lower Values are configured to Disabled In order to properly set the Abnormal Sampling Rate you must first determine how often the Field Unit needs to update you about the device being monitored while in an Abnormal condition You have a selectable range of 1 10 15 20 40 seconds and 1 5 10 30 60 minutes Figure 18 is an example of how the device switches sampling methods from Normal Sampling Rates to Abnormal Sampling Rates Indicates that Menu is Disabled if Wireless Instrumentation Manager is used See Appendix A M357 Rev E Page 26 Jowa USA Resistance Transceiver Installation and User
13. E is being displayed will Enable the Normal Value Thresholds for the input Pressing ENTER while DISABLE is displayed will Disable the Normal Value Thresholds Disabling a set of Normal Value Thresholds for the input will not allow the Field Unit to go into an Abnormal Condition for the respective process variable The Factory Default is both Disabled Once you have selected to enable the Normal Thresholds for a particular process variable i e level you will be able to enable disable the Normal Upper Value Threshold and the Normal Lower Value Threshold If a Normal Value Threshold is disabled the Field Unit will not enter into an Abnormal condition when above below that Normal Value Setting only one Normal Value Threshold is acceptable All Normal Values come Disabled from the Factory The next prompt you will receive when configuring the Normal Value is XXXX XX for the level value Increment this value to the desired value and press the ENTER button The may be toggled on and off as well The final prompt you will receive is the Time Deadband prompt The Time Deadband refers to the number of seconds that the measured reading must stay in a certain condition before the Field Unit will actually switch to that condition To select a proper Time Deadband consider the example in Figure 22 M357 Rev E Page 29 Jowa USA Resistance Transceiver Installation and User s Guide Abnormal Condition Abnormal Condition Abnormal Condition Abno
14. F OFF o NO RF Field Unit and Base Radio have no communications e Liquid Level o XXXX XX Currently measured level in units selected Error Messages If an error is detected with the operation of the Field Unit a message will be displayed on the Field Unit LCD a corresponding message may also appear on the Base Radio LCD There are few types of error messages warning and fatal Warning messages are displayed as part of the normal cycling message sequence These are LOW BAT battery should be replaced as soon as possible e NO RF can not detect Base Radio e S FAULT there is an open or shorted sensor input Also if a sensor value goes above below logical limits The unit will display 9999 99 for measurement sensor fault mode but will continue sampling and recover if the problem desists e OVERRNG the device is measuring a value above below sensor dependent bound values For example the device will report over range if measurement is above 100 range of the sensor If the measurement goes above 150 full range the unit will go into Sensor Fault mode In over range mode the meas urement is continued to be displayed with the OVERRNG message to remind the user that the specified range of the sensor and the calibrated range of the device is being exceeded Fatal error messages will replace the normal cycling message sequence and will flash A fatal message indicates the Field Unit is no longer operating norma
15. For more information on the password see the Setting the Password section M357 Rev E Page 10 Jowa USA Resistance Transceiver Installation and User s Guide RF Channel Setup All Field Units and Base Radios can be set to one of 16 different communication channels The only Field Units recognized by a particular Base Radio are the units that share the same RF Channel as that Base Radio This allows the user decide which Field Units communicate with each Base Radio Each Field Unit comes from the factory set to the RF OFF channel This means the Field Unit will not communicate to any Base Radio To set the Field Unit for communication first determine the channel that you wish to use Then confirm Base Radio is set to this same channel Follow the Field Unit Menu Map in Figure 4 to configure the RF Channel setting The factory default is RF OFF I OPERATIONS SEQUENCE NEXT ENCORE ENTER a os a m d ENTER gt RECHANIkENTER gt CH18 Default of RF OFF Figure 4 Menu Map to RF Channel Setting Increment the channel until it matches the channel you noted from the Base Radio Then save and exit the menus and return to the Operations Sequence M357 Rev E Page 11 Jowa USA Resistance Transceiver Installation and User s Guide Baud Rate Setup The Baud Rate refers to the speed at which the Base Radio and Field Units communicate There are three selectable settings 4 8K Baud rate of 4 8 Kbaud Update ever
16. Installation and User s Guide Wireless Resistance Transceiver WRT M357 Rev E September 23 2009 JOWA USA Inc 59 Porter Road Littleton MA 01460 1431 Phone 978 486 9800 Fax 978 486 0170 Jowa USA Resistance Transceiver Installation and User s Guide Important Information to User e Changes or modifications not expressly approved by the manufacturer may void the user s authority to operate the equipment e This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation e This device is for mobile and fixed use only not portable or body worn A separation distance of 20cm must be maintained at all times between the antenna and the body of the user and bodies of nearby persons e This device is protected by US Patent 6 338 283 and other Pending Patents FCC Certification e This product is a frequency hopping RF transceiver module for the 900MHz ISM band designed to meet FCC 15 247 and is used in industrial control and monitoring applications e The antenna is factory installed and MUST NOT be removed or modified by user Table of Contents INTRODUCTION 6 UNPACKING 6 A QUICK START GUIDE 7 CONFIGURING THE FIELD UNIT FOR RF COMMUNICATIONS 8 FIELD UNIT DISPLAYED MESSAGES 8 RF CHANNEL SETUP 11 BAUD RATE SETUP 12
17. Page 44 Jowa USA Resistance Transceiver Installation and User s Guide Default of FEET ENTER ZERO NTR Default of 613 OHMs NEXT ases gt IT Detoutot 55 OHMs NEXT NEXT SPAN PENT gt XXX Default of 2 FEET The user must apply XT the POINT 1 amp POINT NE 2 to the sensor then select YES To save the point If ENTER is pressed while YES is being displayed the value is saved If ENTER is pressed while NO is being displayed the NEXT NEXT value is NOT saved RESET eNrER CCNO ENTER M YES J This resets all the trim points to the factory settings including the ZERO NEXT Point CENT Not the OFFSET oper ENTER NEXT ENTER amp NEXT AT ANY TIME NO YES USER PROMPTED OPERATIONS FOR PASSWORD UF i Ve De NOTE SET TAG SAMPLNG and UNITS menus are disabled upon use of Wireless Instrumentation Manager Software see Appendix A for more details M357 Rev E Page 45 Jowa USA Resistance Transceiver Installation and User s Guide Appendix D Field Unit Displayed Message Definitions This section covers the various messages displayed on the Field Unit LCD that occur during operation of the device Operations Sequence e RF Link Status RF OK Field Unit and Base Radio are communicating properly o RF SYNC Field Unit and Base Radio are attempting to synchronize communications o RF OFF Field Unit s RF Channel is set to R
18. Power Up and Operations LCD 8 The Read Only Sequence wi icta reete 9 Overall Configuration Menu Map ite e etse DE itd 10 Menu Map to RF Channel 11 Menu Map to Baud Rate se merat oet istas 12 Menu Map to RF ID torre iere rore eade e sede 13 Menu Map to Password Selling 14 Menu Map to Set Tag Nartie i cre ore dante Een eue opened e oe iu 15 Examples of Incorrect Field Unit Positioning 17 Resistance tape Field Unit eese 18 Menu to Normal Transmit 20 Batey testes Tah e 22 Incorrect Normal Sample Rate Setting 23 Correct Normal Sample Rate 23 Menu to Normal Sample Rate Setting 24 Example of Abnormal Transmit Rate 25 Menu Map to Abnormal Transmit Rate 26 Example of Abnormal Sampling Rate
19. Power Up and Operations LCD Sequence NOTE During configuration and installation keep Field Units at least one foot apart and away from the Base Radio to ensure good communications M357 Rev E Page 8 Jowa USA Resistance Transceiver Installation and User s Guide The Read Only Sequence Once the Field Unit is in the Operations Sequence a user may access the READ ONLY Sequence without a password by simply pressing the ENTER button at any time The Read Only Sequence as shown in Figure 2 displays extra information about the current settings of the Field Unit that are not seen during the Operations Sequence but does not allow any changes to be made to these settings LOW BAT RF OFF NO RF Figure 2 The Read Only Sequence M357 Rev E Page 9 Jowa USA Resistance Transceiver Installation and User s Guide Overall Configuration Menu Map A complete Field Unit Menu Map is shown in Appendix C Below is an overall view of the configuration menu to aid the user in setting up the Field Unit for proper operation OPERATIONS SEQUENCE e _ NEXT es ses BREE noo sen ER ENTER espe em c l USER PROMPTED FOR PASSWORD UF NEXT NEXT NEXT SAMPCNG enter HORM NEXT NEXT NEXT NEXT Figure 3 Overall Configuration Menu Map NOTE The user must enter a four digit password to enter the CONFIG and DIAGNSE The FACTORY menu is for factory use only The factory default user password is 0000
20. Rate you must first determine how often the Field Unit needs to update you about the device being monitored while in an Abnormal condition You have a selectable range of 1 10 15 20 40 seconds and 1 5 10 30 60 minutes Figure 16 is an example of how the device switches sampling methods from Normal Transmit Rates to Abnormal Sampling Rates 250 Abnormal Condition 200 Abnormal Level 150 Transmission inches Normal 100 Transmission Normal Upper _ Xl EXCESS B dd s ERES Value 50 0 i o 1 00 2 00 3 00 Normal Transmit Rate of 1 Min Abnormal Transmit Rate of 10 Sec Normal Upper Value of 60 Figure 16 Example of Abnormal Transmit Rate Setting The Field Unit only recognizes the Abnormal condition when a Normal Sample is above the Normal Upper Value Once the Field Unit is in the Abnormal condition it has changed from the Normal Transmit Rate of 1 Min to the Abnormal Transmit Rate of 10 seconds This continues until the Abnormal condition is over and then the Field Unit returns to the Normal Transmit Rate Once you have decided the proper time for the Abnormal Transmit Rate follow the Field Unit menu map shown in Figure 17 Indicates that Menu is Disabled if Wireless Instrumentation Manager is used See Appendix A M357 Rev E Page 25 Jowa USA Resistance Transceiver Installation and User s Guide PASSWORD NEXT Default of 5 Second AERAR even 1 10 SEC 1
21. Unit still securely fastened to the equipment being monitored e Are there any visible corrosions cracks or residue build ups on the unit e Has anything about the application changed from the original intended use Changing the Battery The battery will need to be changed within one month of seeing a LOW BAT message on either the Field Unit or in the Wireless Instrumentation Manager Changing the battery is a simple process but it needs to be carefully followed as the battery is a safety component of the Wireless Field Unit and it needs to be changed in accordance with this procedure to maintain the safety of the device 1 Make sure you have the correct replacement battery There are two types of batteries depending on the date of manufacture of the field unit The type of battery can be identified from the battery label on the field unit Be certain that you replace the battery with the battery specified on the battery label as the battery contains protective components and must be replaced in kind to maintain the safety features of the product To identify the type of battery in the individual field unit first find the battery label on the outside housing If you see the note on the battery label Contains Battery Pack WI BATTERY KIT 01 then you must replace the field unit battery with Battery Pack model Number WI BATTERY KIT 01 The Battery Pack WI BATTERY KIT 01 is a battery replacement kit The kit contains a bat
22. Wiring M357 Rev E Page 19 Jowa USA Resistance Transceiver Installation and User s Guide Configuring Field Unit Sample Settings The Wireless Resistance Transceiver is very versatile with many programmable features and can be used in numerous different applications Because no two applications are the same some calibration is required for each unit This section will walk you through the initial calibration of these Sampling Settings Setting the Normal Transmit Rate The Field Unit is in a sleep mode to save power during the operations sequence This mode turns off most of the electronics on the unit with the exception of the LCD in order to preserve battery life The Field Unit will then wake up for every Normal Sampling Rate and take the necessary measurement The Field Unit will then transmit these readings to the Base Radio every so many seconds depending on the Normal Transmit Rate The first item to note is that the maximum speed of the Normal Transmit Rate is dependent on the Baud Rate setting you selected earlier see Baud Rate Setup The Transmit Rates cannot update faster than their communication speed allows Thus if you selected the 19 2K Baud Rate setting your maximum Transmit Rates will be the 5 Second setting The Field Unit automatically determines these settings and adjusts the menu options accordingly A complete table of these parameters is shown in Table 1 on page 21 In order to properly set the No
23. asurement follow the Field Unit menu map shown in Figure 24 The factory default units is FEET OPERATIONS SEQUENCE NEXT gt CONFIG SSSQCcoaQQrcuc PASSWORD a NEXT NEXT NEXT NEXT FEET INCHES METERS Default of FEET Figure 24 Menu Map to Units Setting Indicates that Menu is Disabled if Wireless Instrumentation Manager is used See Appendix A M357 Rev E Page 32 Jowa USA Resistance Transceiver Installation and User s Guide Selecting the Sensor Output Limits For the sensor to output level data over a range you will need to determine the distance to a lower level called the ZERO point a distance to an upper level called the FULL point and the distance between the two called the SPAN Then resistances will be calculated for the ZERO and FULL points using a simple formula and the properties of the specific sensor being used The reference point from which all measurements are to be made is the mounting flange for the sensor housing most often the Stillpipe Flange or in the case of the Aquatape the Top of the pipe thread The sensor is commonly installed within a still pipe located in a tank The illustration below shows this type of installation along with the variables required to complete this portion of the setup DTB is the distance to the bottom of the tank from the top of the flange Top of pipe thread or Stillpipe Flange Level Full Ed Sti
24. ating Temperature 85 C e Temperature Class T4 Weight 2105 0 91 kg Page 47
25. d Enabled Disabled Disabled Deadband M357 Rev E Page 42 Jowa USA Resistance Transceiver Installation and User s Guide Appendix C Field Unit Menu Map CONFIG Used to configure the unit sampling units etc DIAGNSE Technical Support Use Only FACTORY Factory Use Only The Configuration menu item with its sub menus is shown below CONFIG ENTER PASSWORD SET RF Set RF Communication Settings RF CHAN RFchannel of the Field Unit BAUD RT Baudrate for the RF transmission 4 8K Baud rate of 4 8kbaud gt 19 2K Baud rate of 19 2kbaud gt 76 8K Baud rate of 76 8kbaud gt RF ID RF identification of the Field Unit on the network EXIT Return to Config Menu SET PWD Sets a new 4 digit password SET TAG Sets a tag name for the Field Unit 21 Char max SAMPLNG Sets parameters for sampling and transmission speeds NORM XR Transmit rate during Normal conditions NORM SR Sample rate during Normal conditions ABNR XR Transmit rate during Abnormal conditions ABNR SR Sample rate during Abnormal conditions INPUT 1 Level Normal Value Thresholds If Enabled gt NORM UV Level Upper Threshold Value If Enabled Sets value of Upper Threshold Sets time deadband around threshold NORM LV Level Lower Threshold Value If Enabled Sets value of Lower Threshold Sets time deadband around threshold
26. e mechanically mounting the unit is a quick hand held test To perform this test you should have a good idea of where the Base Radio will be placed for more information see the Base Radio Installation and User s Guide Put the Base Radio in this area and power it up Now make sure that the Base Radio and Field Unit are on the same RF Channel and Baud Rate See the Configuring to the Base Radio Section You may also have to increment the number of Field Units that are being communicated with on the Base Radio See the Base Radio User s Guide Once both the Base Radio and Field Unit are configured to one another make sure communications are established by looking on the Field Unit LCD for an RF OK message in the Read Only Sequence see Read Only Sequence section Now take the Field Unit to the sensor you wish to monitor Hold the Field Unit over the mounting hole Look at the LCD in both the right and left most regions you will notice a small arrow This arrow indicates the sending and receiving of messages between the Base Radio and Field Unit If both arrows are moving up and down and you do not see a NO RF message then the position you have selected will be suitable place for mounting the device If only one or neither of the arrows is moving and you see a NO RF message then you do not have RF communication with the Base Radio If your application allows move to a different position and check again for communications If your appl
27. e battery pack model Number WI BATTERY KIT 01 can be identified when compared to Photo 1 To replace this battery pack follow steps 5a through 5f and then proceed to Step 7 Otherwise follow steps 6a through 6b and then proceed to Step 7 Photo 1 a If your unit contains the battery pack model Number WI BATTERY KIT 01 carefully unplug the connector that connects the battery pack to the circuit board There is a small detent in the connector that must be fully depressed to remove the battery wiring connector Once the detent is sufficiently depressed the connector sections are easily disengaged If the connector sections do not disengage easily you have not depressed the detent sufficiently Do not apply a large force to separate the connection sections and do not pry the connector apart b Next cut the plastic tie wraps that hold the battery pack in place c Remove the battery pack and the plastic tie wraps d Slide the new plastic tie wraps included in the replacement kit through the mounting holders on the circuit board e Place the new battery pack on the mounting holders and fasten the two tie wraps M357 Rev E Page 39 Jowa USA Resistance Transceiver Installation and User s Guide f Plug the connector into the battery connector on the circuit board Note that the connector has a specific mating orientation and is intended to only engage in one orientation Do not force the connectors together If it does n
28. ev E Page 40 Jowa USA Resistance Transceiver Installation and User s Guide Appendix A Navigating the User Menus Pressing either the NEXT or ENTER buttons located on the front of the Field Unit or Base Radio just below the Liquid Crystal Display LCD screen is all that is needed to navigate the respective menus Pressing both of these buttons for one second will turn the unit on Pressing the NEXT button at any time while the Field Unit is cycling through the normal messages causes the Field Unit to enter the setup mode The NEXT button is then used to step through menu options and the ENTER button is used to enter a sub menu of what is displayed on the LCD at that time If no button is pressed within a 30 second period the unit goes back to the normal display mode If you enter a sub menu that requires a numerical input such as 001 the left most 0 will be blinking This indicates that pressing the NEXT button will increment this value with each press from 0 to 9 and back to 0 again Pressing the ENTER button will move to the next available value If the last value is blinking pressing ENTER will save the entered values and return from the sub menu If both the NEXT and ENTER buttons are depressed at once a message on the LCD displaying OFF will appear If both buttons are released upon appearance of this message the user will be returned to the scrolling main screen If both buttons are not released for the duration of the OFF messa
29. f the mounting nipple inside the sensor housing Note Units of measure for DTH N and AD is feet for RG it is Ohms per foot SG is a ratio and does not have a unit of measure ZERO resistance is found using the following general equation RzERO RGx gt AD SG This can be simplified for the following sensor types and applications to Aquatape in water 0 SGwater 1 Rzero RGx Dzzno 0 25 Petrotape in liquid with known Specific Gravity SG N 0 15 RzERO RG x Dzero 0 14 0 59 SG For all other type sensors and liquid combinations use the general equation where N 0 15 for the SH SS887 housing and N 0 for the PVC housing The FULL resistance can be calculated by using the SPAN measurement The resistance over the span is the SPAN in feet times the gradient RG of the sensor Rspan SPAN x RG Subtract Rspan from RzERO to get Rspan Now you have the two set points expressed as resistance and Rzero and the SPAN expressed in linear units to input into the WRT for calibration RfuL RzERo SPAN ft or in or m M357 Rev E Page 34 Jowa USA Resistance Transceiver Installation and User s Guide To enter sensor data points navigate to the SENSOR command Select ZERO and enter the Rzero resistance Then select FULL and enter the resistance Lastly select SPAN and enter the span in the proper units L
30. fully communicating If only one or none of the arrows are moving then RF communication is unsuccessful M357 Rev E Page 13 Jowa USA Resistance Transceiver Installation and User s Guide Setting the Field Unit User Password Each Field Unit has a password that will lock out undesired users from making changes to the Field Unit Any user may still view some of the Field Unit settings by pressing the ENTER key during the Operations Sequence and viewing the Read Only Sequence The password is a four digit password much like a pin number from a bank The factory default is 0000 Please select a different password if you wish Follow the Field Unit Menu Map below to change the password OPERATIONS SEQUENCE NEXT l USER PROMPTED FOR 1 t PASSWORD NEXT ENTERS XXXX Default of 0000 Figure 7 Menu Map to Password Setting If you forget your password you must call the factory for a password reset command M357 Rev E Page 14 Jowa USA Resistance Transceiver Installation and User s Guide Setting the Field Unit Tag Name Each Field Unit also has a user settable Field Unit Tag Name This tag name is displayed upon Field Unit power up and when the Read Only Sequence is selected The Tag Name is a 21 character name that is displayed in three separate 7 character flashes on the Field Unit LCD The user may choose from A Z 0 9 a dash
31. ge the unit will power down and turn off Note If the unit is turned off while entering values in a sub menu those values will NOT be saved As shown throughout the document this mark indicates that these menu options will automatically turn off if the Wireless Instrumentation Manager software is used All changes to these Field Unit menu options should be made through software instead This is to prevent simultaneous changes from taking place If you wish to discontinue use of the software and want these menus re instated you must contact the factory M357 Rev E Page 41 Jowa USA Resistance Transceiver Installation and User s Guide Appendix B Field Unit Parameter Defaults and Limits Below is a table which shows all the settable parameters for the JOWA USA Wireless Resistance Field Unit Included in this table are the limits of each parameter as well as the factory default settings Range Un RF Charmer RO Bava Rate 760K 102K 40K ox Rb w o Fase 96 _ BLANK Normal Transmit Rate Dependent on Baud Seconds Minutes 10 Seconds Rate Normal Sampling Rate Dependent on Transmit Seconds 1 Second Rate Abnormal Transmit Dependent on Baud Seconds Minutes 5 Seconds Rate Rate Abnormal Sampling Dependent on Transmit Seconds 1 Second Rate Rate Normal Upper Level Enabled Disabled Disabled Value amp Time 9999 99 ft 9999 99 ft Deadban
32. ication only allows you to mount at this particular point you may want to try a slower baud rate setting Note While slowing the baud rate increases communication distance it also requires more time to complete a communications cycle This may not be suitable for your application One final solution is to reposition the Base Radio however this may affect communications with previously installed Field Units and if so may require the use of a second Base Radio for your application To select a better spot for the Base Radio see the Positioning the Base Radio section of the Base Radio User s Guide M357 Rev E Page 18 Jowa USA Resistance Transceiver Electrical Installation Installation and User s Guide When the Field Unit is mounted to the cover of the sensor housing simply plug the sensor connector to the mating Field Unit connector Mounting Instructions 1 2 3 Remove Housing Cover from Housing Remove Locknut from Field Unit Make sure Seal Washer will have rubber side against Housing Cover Insert Plug from Field Unit through hole in Housing Cover Push Locknut over Field Unit Plug and up wire Thread Locknut onto Field Unit hand tight Orient Transceiver display to desired position While holding hex on Field Unit tighten Locknut until Seal Washer is flat against housing Cover Plug Field Unit into sensor and install Housing Cover onto Housing Figure 10 Resistance tape Field Unit
33. ield Units in your system are set to a default ID number upon shipment For example if you have ordered a Base Radio and three Field Units the Field Units will be configured to ID s 0 0 and 0 You must set these units to three different consecutive numbers starting with 1 in order for the communications to work properly The Field Units in this example would be set to RF ID s 1 2 and 3 First determine the ID s you d like to give each unit Then follow the menu map shown in Figure 6 to configure the RF ID The factory default is RF ID 0 which disables the RF communications of the unit NEXT NEXT N PED Default of 000 Figure 6 Menu Map to RF ID Setting Once you have selected the RF ID you wish to use for this particular Field Unit save and exit the menus and return to the Operations Sequence The Field Unit should now be successfully configured to the Base Radio To check this press ENTER while the Field Unit is in the Operations Sequence for the Read Only Sequence to be displayed You may see an RF SYNC message displayed on the Field Unit LCD This means that the Field Unit and Base Radio are attempting to synchronize communications If this is successful the RF Status will display an RF OK message If this is unsuccessful the RF Status will display a NO RF message Also notice the two small arrows on either side of the LCD if they are fluctuating up and down that indicates the Field Unit and Base Radio are success
34. instrumentation investments The Transceivers or Field Units communicate in a secure digital protocol over a band of frequencies from 902MHz to 928MHz This data communication technique has been the backbone of the military s secure communications protocols for many years These devices require no wires permits or licenses and are easily setup and installed right out of the box You can use this device for long term monitoring in remote locations for short term data gathering on process conditions or to quickly test the economic viability of a new installation The purpose of this Guide is to help you install and maintain your Wireless Resistance Transceiver BEFORE setting up and installing the Field Unit please setup and configure the Base Radio See the Wireless Base Radio Guide M356 for more details Unpacking Remove the Packing List and check off the actual equipment received If you have any questions on your shipment please call the factory Upon receipt of shipment inspect the container for any signs of damage in transit Especially take note of any evidence of rough handling Report any apparent damage immediately to the shipping agent Please note that sometimes units are assembled with accessories when shipped Inspect the shipment carefully if you think that something is missing This is rare as we take considerable care to pack units for shipment but it does sometimes happen Please give us a call and we may be able
35. llpipe Level Zero _ ____ __ _ Note All measurements and calculations need to be done in feet First determine Dzero which is the distance from the top flange or pipe thread to the point where you decide to set the ZERO Often it is easier to calculate this distance by measuring the distance to tank bottom DTB and then subtracting the distance above this point to the ZERO point In the illustration Dzero DTB level from the bottom ZERO If you desire the ZERO point to be AT tank bottom then Dzero DTB Next you need to calculate Deut which is the Distance to the FULL point again from the top of the flange or pipe You can calculate that distance with this formula Dru level from the bottom FULL M357 Rev E Page 33 Jowa USA Resistance Transceiver Installation and User s Guide Or if you know the span you wish to set you can simply subtract the span from the Dzero Drutt Dzero SPAN The SPAN is always the difference between the ZERO and FULL points With these distances you are ready to calculate the equivalent sensor resistance for each point In the following equations RG is the Resistance Gradient in ohms foot for the sensor being used DTH is the distance to the top helix and AD is the actuation depth for the sensor All of these can be found on the sensor tag or on the sensor log included with the shipment SG is the Specific Gravity of the liquid and N is the height o
36. lly and requires repair These are e RF ERR fatal error within RF communications e SEN ERR fatal error within the sensor electronics e SYS ERR fatal error within the computer system e RF CAL fatal error within the RF calibration system M357 Rev E Page 46 Jowa USA Resistance Transceiver Installation and User s Guide Appendix E Field Unit Specifications Sensor Options The WRT supports the following level sensors SENSOR WETTED SERVICE RANGE TYPE MATERIALS AGS nd atmospheric AQUATAPE od Saltwater Polypropylene conditions astewater H Stainless Steel LA Sewage 3 100 length 15PSI PGS HN 3 100 length PETROTAPE Crude Oil and all Hastelloy C276 2PSI Petroleum Nylon 12 Glass filled Products Polypropylene 3 100 length LAHN 15PSI CGS HP CHEMTAPE Chemicals 3 100 length HASTELLOY acids bases Hastelloy C276 2 5 solvents Glass filled Industrial Polypropylene 3 100 length LA HP Wastewater 15PSI CGS CHEMTAPE 100 length 2 5 TEFLON Select chemicals FEP Teflon Glass T consult factory filled Polypropylene 3 100 length 15PSI Power Characteristics e Self contained Power e C Size 3 6 V Lithium Battery e Up to Five Year Battery Life Depends on Sample Rate and RF Update Rate Field Replaceable Operating Temperature Range e 40 F to 185 F 40 C
37. maintain an approximate spacing of at least one foot 3 line of sight range between a Field Unit and Base Radio is 2000 feet at the 19 2K baud rate setting Note that the amount of RF Noise present obstructions and the material of construction of the objects reduces this range M357 Rev E Page 16 Jowa USA Resistance Transceiver Installation and User s Guide 4 Only place the Field Unit in ambient operating temperatures of 40 F to 185 F 40 C to 85 Figure 9 shown below gives examples of incorrect setups according to the previously mentioned parameters Field Units too close together Outside Base Radio range Bottom aimed at Base Radio Too great of an obstacle for the distance to Base Radio Obstruction Figure 9 Examples of Incorrect Field Unit Positioning Because there are so many setup possibilities we cannot cover them all A correct setup would make sure that the above warnings are heeded and that the Field Unit and Base Radio are capable of communication The RF Placement Test section will help you to determine if you have a selected the correct installation points and orientations for your application M357 Rev E Page 17 Jowa USA Resistance Transceiver Installation and User s Guide A Simple RF Placement Test Remember proper placement of the Field Unit will optimize your RF communication range and capabilities Perhaps the best test to perform befor
38. ocess variable must change since the last data transmission to trigger a new transmission of the process variable The amount entered is in the same units as were selected by the user to be displayed on the Field Unit If the process variable does not change by more than the entered Smart Rate Amount within the time between the normal or abnormal transmit rate whichever is active Then the process variable is transmitted on the next transmit rate If the process variable changes by more than the entered Smart Rate Amount within the normal or abnormal transmit rate whichever is active then the process variable is transmitted immediately The normal abnormal transmit clock is then reset upon this transmission If no Smart Rate Amount exceeding change takes place in the next normal abnormal clock cycle then the next transmission will be the normal abnormal transmit rate If changes in the process variable which exceed the Smart Rate Amount continue to occur the process variable is transmitted repeatedly Indicates that Menu is Disabled if Wireless Instrumentation Manager is used See Appendix A M357 Rev E Page 31 Jowa USA Resistance Transceiver Installation and User s Guide Selecting Units of Measure The Field Unit can be used in many different types of applications To accommodate these various options there are various measurement units that can be selected Options include FEET INCHES and METERS To select units of me
39. ot fit easily check to see if the battery connector is backwards and try to plug the connector in again Photo 2 If the battery looks like that shown in Photo 2 then replace it by following steps 6a through 6b and then proceed to Step 7 6a Look carefully at the battery in the unit and identify the positive end and the Negative end The positive and negative terminals are marked on the battery and on the circuit board 6b Remove the old battery and replace it with Accutech Part Number WI BAT Be extremely careful to put the positive end of the battery in the proper location Plugging the battery in backwards will cause a safety component on the circuit board to trip and the unit will need to be returned to the factory to replace the safety component 7 Now you are ready to replace the cover You will note that the cover gasket has a thin coating of gasket lubrication Use a cotton swab to wipe around the gasket to spread the lubrication Then replace the housing When replacing the housing be careful that the flexible ribbon cable folds properly If the ribbon cable seats next to the antenna the RF operating distance can be reduced Also check to be certain that the cover tether is not sandwiched between the cover and the cover gasket 8 Tighten up the four cover screws and torque them to 18 inch pounds 1 5 ft lbs 9 Dispose of the old battery properly in accordance with your local regulations M357 R
40. ou selected the Normal Transmit Rate setting to be 10 Seconds the Normal Sampling Rate must be set to 10 Seconds or faster A complete table of these parameters is shown below Baud Rate 76 8K 19 2K 4 8K communication range 500 750 feet 2000 2500 feet 3000 feet speed of updates 1 Second 5 Seconds 20 Seconds Normal and Abnormal 1 Second or 5 Seconds or 20 Seconds or Transmit Rates Greater Greater Greater Normal and Abnormal Equal to Transmit Equal to Transmit Equal to Transmit Sampling Rates Rate or Less Rate or Less Rate or Less Table 1 Rate Limits and Dependencies In order to properly set the Normal Sampling Rate first determine how often updates are needed from the Field Unit when the device being monitored is operating normally You have a selectable range of 1 30 seconds Note however the more frequent the Field Unit wakes up to check the monitored device the faster you will use up the battery life of the Field Unit This is indicated on the three charts in Figure 12 shown below Battery Life Calculator 76 800 FAST Sensor various sensor sample rates l twice second 4 once second every 5 seconds Battery Life yrs RF Update Period seconds Indicates that Menu is Disabled if Wireless Instrumentation Manager is used See Appendix A M357 Rev E Page 21 Jowa USA Resistance Transceiver Installation and User s
41. r The main considerations for installation are covered below Give careful consideration to the environment where you will be installing your instrument Avoid installations that expose the device to excess temperature high vibration considerable shock or exposure to dripping condensate or corrosive materials Also avoid installing the device in an unserviceable location Most often these problems can be avoided with some thought at the time of installation The practices noted below are generally recommended but they can only act as a guideline and cannot cover all possible variations The final installation must be made at the discretion and approval of the user You must be the judge of the actual installation WARNING DURING INSTALLATION DO NOT APPLY FORCE TO THE INSTRUMENT HOUSING USE A PROPER WRENCH ON THE HEXAGONAL FLATS PROVIDED ONLY FAILURE TO USE CORRECT INSTALLATION PROCEDURE CAN CAUSE DAMAGE TO THE FIELD UNIT Field Unit Positioning Correct positioning of the Field Unit will ensure the best performance of the device When planning the positioning of the Field Units there are a few parameters to pay attention to 1 Ideally the Field Unit should be mounted in the hole 4 N provided in the sensor housing Tighten the Field i Unit to the box with the provided locknut See the al adjacent figure In any case the bottom of the Field EE Unit should NOT point directly at the Base Radio 2 All Field Units should
42. rmal Condition 250 200 50 Normal Upper Value Normal Condition set to 160 inches Level inches 0 T 0 1 00 200 3 00 Time min sec Figure 22 Example of Condition Chatter without Time Deadband Notice that the Field Unit continues to cycle from Normal to Abnormal Conditions due the fact that the Level Value is fluctuating around the 150 Normal Upper Value This is highly undesired Instead the addition of a few second delay before the Field Unit switches conditions will eliminate this chatter as seen in Figure 23 below 255 200 Level 150 inches 100 50 Normal Uppar Value Normal Condition set to 160 inches 0 l a o 0 1 00 2 00 3 00 Time min sec Figure 23 Example of Condition Chatter Elimination Due to 20 sec Time Deadband M357 Rev E Page 30 Jowa USA Resistance Transceiver Installation and User s Guide Setting the Smart Rate Threshold The Smart Rate is a system used to trigger radio transmission of measured data sooner than the normal or abnormal rate specified by the user This feature is used to construct a more accurate graph of measure process variable vs time than is possible with the fixed transmission rates while using less battery power To configure the Smart Rate Threshold follow the menu map shown in Figure 21 on page 29 to the SMART R menu and press the ENTER button The user is then asked to enter the amount that the pr
43. rmal Transmit Rate you must first determine how often you need updates from the Field Unit when the device being monitored is operating normally You have a selectable range of 1 5 10 15 20 40 seconds and 1 minute Then follow the menu map shown in Figure 11 to configure the Normal Transmit Rate The factory default is 10 Seconds OPERATIONS SEQUENCE NEXT CONFIG t PASSWORD I Default of 10 Seconds NEXT SAMPING ENTER gt ENORMOXRI ENTER gt 1 5 10 SEC 15 SEC 20 SEC 40 SEC 1 MIN Figure 11 Menu Map to Normal Transmit Rate Indicates that Menu is Disabled if Wireless Instrumentation Manager is used See Appendix A M357 Rev E Page 20 Jowa USA Resistance Transceiver Installation and User s Guide Setting the Normal Sampling Rate As mentioned before the Field Unit is in a sleep mode to save power during the operations sequence This mode turns off most of the electronics on the unit with the exception of the LCD in order to preserve battery life The Field Unit will then wake up for every Normal Sampling Rate and take the necessary level readings The first item to note is that the minimum speed of the Normal Sampling Rate is dependent on the Normal Transmit Rate setting you selected earlier see Setting the Normal Transmit Rate The Sampling Rates cannot update slower than the speed at which the Field Unit is required to transmit updates Thus if y
44. s Guide 250 Abnormal Condition 200 Abnormal Level 150 inches Normal 100 Normal Upper 4 JA a LLL Value 50 0 Normal Sampling Rate of 15 Sec Abnormal Sampling Rate of 5 Sec Normal Upper Value of 60 Figure 18 Example of Abnormal Sampling Rate Setting The Field Unit only recognizes the Abnormal condition when a Normal Sample is above the Normal Upper Value Once the Field Unit is in the Abnormal condition it has changed from the Normal Sampling Rate of 15 seconds to the Abnormal Sampling Rate of 5 seconds This continues until the Abnormal condition is over and then the Field Unit returns to the Normal Sampling Rate Once you have decided the proper time for the Abnormal Transmit Rate follow the Field Unit menu map shown in Figure 19 OPERATIONS SEQUENCE NEXT of CONFIG t Tiara ae ENTER PASSWORD NEXT SAMPING Penter NEXT NEXT Default of 1 Second NEXT CABRA SR HENTER 1 10 SEC 15 SEC 20 SEC 30 SEC Figure 19 Menu Map to the Abnormal Sampling Rate Setting M357 Rev E Page 27 Jowa USA Resistance Transceiver Installation and User s Guide Setting the Normal Upper and Lower Values Each Wireless Resistance Transceiver is equipped with a level upper and lower value As the level is measured it is compared to a set threshold value Depending upon the setting of that value whether it is enabled or not and what the time deadband is
45. tery encapsulated with electronic safety components along with two battery tie down clips 2 If you do not see the battery pack identification labels noted in item 1 above your field unit contains the following battery TADIRAN Lithium Inorganic Battery non rechargeable size 3 6Volts TL 2200 5 These replacement batteries are model Number WI BAT M357 Rev E Page 38 Jowa USA Resistance Transceiver Installation and User s Guide 3 To replace the battery or the battery pack first power down the Field Unit by pressing and holding both the NEXT and ENTER buttons for a few moments You should see the display ask for the PASSWORD Enter the correct password to power down the unit The factory default password is 0000 4 Next remove the 4 cover screws on the sides of the Field Unit housing with a standard screwdriver Remove the housing cover It may be a bit difficult to separate the housing cover from the gasket Be very careful if you need to pry the cover off the gasket not to damage the gasket When removing the cover you will notice a flexible cable that connects the instrument cover to the electronic circuit boards Note the position of this cable as well as the tether which restrains the movement of the cover The ribbon cable is easily damaged and must be carefully folded back into place when you replace the cover 5 Locate the battery or the battery pack and identify which type of battery you have Th
46. to 85 C Electronics e 4 F to 158 F 20 C to 70 C Display Full Visibility e 40 F to 185 F 40 C to 85 C Display With Reduced Visibility RF Characteristics e 902 MHz 928 MHz Frequency Hopping Spread Spectrum FHSS FCC Certified ISM License free band e Up to 3000 Range from Base Radio with Clear Line of Sight 500 to 1000 Range with Obstructions e The RF Module in Each Field Unit is Individually Tested and Calibrated over the Full Temperature Range to Ensure Reliable Wireless Operation M357 Rev E Physical Characteristic e GELexan Cover V 0 Rating and UV Stable Operating Vibration and Shock Characteristics e Certified per IEC ENOOO068 2 6 Vibration and 2 27 Shock Random Vibration Characteristics e Certified to Withstand 6 g s 15 Minutes per Axis from 9 500 Hz Electromagnetic Compatibility CE Compliance e Operates within Specification in Fields from 80 to 1 000 MHz with Field Strengths to 30 V m Meets EN 50082 1 General Immunity Standard and EN 55011 Compatibility Emissions Standard Industrial Certification e Rated for industrial use 40 F to 185 F 40 C to 85 C e FM NEMA 4 Weather proof Housing e rated intrinsically safe for Class 1 11 111 Div 1 Groups A B C D E F amp G Class 1 11 111 Div 2 Groups A B C D F amp G Intrinsic Safety Entity Parameters e VMax 30 VDC e Max 100 mA e PMax 900 mW e Maximum Oper
47. y 20 seconds Range of 3000ft 19 2K Baud rate of 19 2 Kbaud Update every 5 seconds Range of 2000ft to 2500ft 76 8K Baud rate of 76 8 Kbaud Update every 1 second Range of 500ft to 750ft A faster baud rate will allow you to transmit more information in a certain period of time but it will also limit your range If you need more distance out of your Field Unit or are encountering difficulties by frequently losing communications then select a slower baud rate First determine the Baud Rate the Base Radio is transmitting at Then follow the Field Unit menu map shown in Figure 5 to configure the Baud Rate The factory default is the 19 2K Baud Rate NEXT ENTER NEXT 192 7 NEXT Default of 19 2K NEXT Figure 5 Menu Map to Baud Rate Setting Once you have selected the Baud Rate you wish to use save and exit the menus and return to the Operations Sequence M357 Rev E Page 12 Jowa USA Resistance Transceiver Installation and User s Guide Field Unit Identification Setup Each Field Unit is identified by the Base Radio and software according to the Identification ID given to that particular unit Two Field Units can NOT have the same ID and be on the same RF Channel if you do not know the RF Channel see the RF Channel Setup section If the Field Unit is in the Operations Sequence pressing the ENTER button displays the Read Only Sequence on the LCD which displays the ID of that unit like this ID 3 All F
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