Operating instructions Electronic level and temperature sensor
Contents
1. mee eee eee enma aceea 0 60 Medium temperature oil permanent C me oase ia atat al a Di a ia a tn a 0 70 ea a VER PR RR NS N ED N Ra NE RE MIREA as 0 90 Storage temperature C Shock resistance g 15 DIN EN 60068 2 29 11 ms Vibration resistance g 5 DIN EN 60068 2 6 10 2000 Hz EMG TEN 610004 2 ESD monoton mt ate el ce ia cp cetele ea 418KV EN 61000 4 3 HF radiated eeeeeeee nene nenea aaa 10 V m EN 610004 4 BUNS 15 aaa am o pa a i ta st 2 KV EN 61000 4 4 Surge stuc ceara eat e ema i m e ic a nes 0 5 1kV EN 61000 4 6 HF Conducte d sms a ea i a a a ic a ala 10 V 21 9 Scale drawing LT8024 O aaa cm inch 728 287 Afactivezone 195 77 390 154 585 230 20 lad 2 0 10 2 40 l2 nactvezone2 15 06 30 12 40 16 C 4 digit alphanumeric display 2 status LEDs a housing connection fa pin connector 6 3 mm folowing DIN 46244 5 posionvorthe temperature measuring element 222. Meriti py LA PERA ret Mode Enter Set Mode Enter Set If adjustment is successful Press and hold until the rdy is indicated display no longer flashes Return to the menu by pressing a pushbutton Press untilcOP is displayed During the adjustment the unit checks the installation conditions by evaluating the measured signal generated by the OP element If the measured signal is invalid if for example the mounting situation is below the minimum distance an error message is displayed 7 1 OP adjustment must be carried out each time when changing a sensitive parameter setting to the medium position of the overflow switch point If If the mounting situation height position or grounding e g length of the earthing cable is changed it is also absolutely necessary to make a new OP adjustment to ensure a correct function of the overflow protection Caution In this case empty adjustment is not required by the sensor by displaying 18 7 Set up operation After mounting wiring and programming check whether the unit operates correctly 7 1 Operation and fault indication Initialisation after power on XXX Level indication Temperature indication eee Level below the active zone FULL Overflow protection point OP reached XXX FULL and the indication of the current level alternate every second UK warning overflow Adjustment of the reference point OP required 6 7 Measurung r
3. u nenea 20 7 4 Read the set parameter values eee eee eee raeee 20 7 5 Output response in different operating states 20 N 2 0 2 PREDEA RER ORE RER reenter RER te ee ET REPER 21 CM p 1 p URNE ROI RR INN N RR POR IRI RR IRI IRI 22 1 Menu structure TERR i le Ir i I i salse zeH e JE CI 2 Controls and indicating elements Mode Enter Set Lighting LED set display unit LED 1 level in cm 4x LED green LED 2 level in inch LED 3 temperature in C LED 4 temperature in F Switching status indication lights if the respective output is switched ey 4xLED yellow OUTI OUT2 level OUT3 OUT4 temperature 4 digit Indication of the current level alphanumeric Indication of the current temperature display Indication of the parameters and parameter values Setting of the parameter values scrolling by holding pressed incremental by pressing briefly Change of the display unit in the Run mode 5 Mode Enter Selection of the parameters and menu points pushbutton acknowledgement of the parameter values Set pushbutton 3 Function and features 3 1 Application hydraulic systems e The unit is designed only for use in oils mineral or synthetic or in media with similar characteristics e tis not suitable for extremely conductive or adhering media granulates bulk materials acids alkalis or any aqueous media it is not suitable for food and electroplating
4. applications The unit monitors 2 process values e Level UK Continuous measured value detection using the capacitive measuring principle evaluation of the dielectric constant of the medium e Temperature of the medium Measured value detection using the Pt element at the lower end of the probe Display e Current level in cm or inch e Current medium temperature in C or F The display unit is defined by programming 6 3 The measuring unit level temperature can be changed in the Run mode temporarily briefly press the Set pushbutton the correspond ing LED lights e Warning in case of overflow FULL and the current level are indi cated alternately if the set reference point OP is reached Signal output Outputs 1 and 2 level 2 switching signals OUT1 OUT2 with adjustable switch points SP1 SP2 and reset points rP1 rP2 e Warning in case of overflow both outputs switch according to the con figuration if the set reference point OP is reached ON for the output function Hno or Fnc OFF for the output function Hnc or Fno Outputs 3 and 4 temperature 2 switching signals OUT3 OUT4 with adjustable switch points SP3 SP4 and reset points rP3 rP4 The switching function can be set for each output hysteresis NO Hno hysteresis NC Hnc window function NO Fno window function NC Fnc 3 2 Reference point OP OP overflow protection point A measuring se
5. function by performing a test in your application 6 3 Setting of the offset value The zone between tank bottom and lower edge of the measuring probe can be en tered as offset value OFS Thus display and switch points refer to the real level Note Set OFS before setting the reference point OP and the switch points for level SP1 2 rP1 2 This avoids inadvertent maladjustment Setting at the factory OFS 0 Mode Enter Set Mode Enter Set a O 9 po D Press until OFS is displayed Ig ale hold until the Confirm return to the menu requested value is indicated 6 4 Setting of the switching parameters Reference point level Please observe the installation instructions and the indicated minimum distances especially the distance between OP and the medium 6 7 OP limits the measuring range at the upper end SP1 SP4 Switch point upper limit value at which the operating output changes its switching status rP1 rP4 Reset point lower limit value at which the operating output changes its switching status OU1 0U4 Switching function for the operating output 4 settings can be selected hysteresis H or window function F as normally open no or normally closed nc SP1 2 and rP1 2 limit values level SP3 4 and rP3 4 limit values temperature 12 Mode Enter Set Mode Enter Set a OB a Press until the requested Press and hold until the Canam tect A parameter is display
6. increments rPx is always smaller than SPx 14 Hysteresis function Hno Hnc The hysteresis keeps the switching state of the output stable if the level temperature of the medium varies about the preset value With the level temperature rising the output switches when the switch on point has been reached SPx With the level temperature falling the output does not switch back until the switch off point rPx has been reached The hysteresis can be adjusted First the switch on point is set then the switch off point with the requested distance Window function Fno Fnc The window function enables the monitoring of a defined acceptable range When the level temperature of the medium varies between the switch on point SPx and the switch off point rPx the output is switched window function NO or not switched window function NC The width of the window can be set by means of the difference between SPx and rPx SPx upper value rPx lower value L level T temperature HY hysteresis L level T temperature FE acceptable range 6 5 Selection of the displayed measuring unit 3 settings can be selected e LEVL indication of the level TEMP indication of the temperature The measuring unit can be changed in the Run mode temporarily briefly press the Set pushbutton OFF In the Run mode the display of the measured value is deactivated If one of th
7. C 03 2005 701895 01 ifm electronic Operating instructions Electronic level and temperature sensor efeckoriso LT80 SS Contents MST SNL iza cece asl eine eta a ina iar ai enim tea 3 2 Controls and indicating elemeniis scai caca sa a tr at la 4 3 Function and TE 15 PIN RIA RR RR RR RR IPN RRC 5 3 1 Application hydraulic SySte NS ca ieac ana cabane ata aa ea adu 5 3 2 Reference point OP eee eee eee nene eee anaaeeaana aaa 6 3 9 Further TUNGONG seimeni ni te aa cana Atata in a a 6 2 NOUN Lo 9 REP RIES E NED RR N NI RR IER RSRR RRRIRR T 9 VOGAL Gonne TOM sssaaa NEOS 9 G Programi o PERIE AR RR RR PIE RARE E RE RER RPR E EE 10 6 1 Selection of the display unit eee eee eeeenee eee e eena rea 10 6 2 Setting to the medium eee nenea nenea nea eee rea eeena a eeana nea 11 6 3 Setting of the offset value m esec aoas ua aa ft aaa lati 12 6 4 Setting of the switching parameters u nenea en 12 6 5 Selection of the displayed measuring unit nenea 16 6 6 Setting of the output response in case of a fault nenea 16 6 7 Adjustment of the reference element 0P eee rereeneree 17 7 Set up operation m eee eee nenea nana ana eeanaaea eanaaea canaa e 19 7 1 Operation and fault indication eee eee enma en ene en 19 7 2 Changeover between level and temperature indication eaeee e 20 7 3 Read reset maximum value memory temperature
8. adjusted to the medium used 6 2 A water layer at the bottom of a tank filled with oil does not influence the level measurement Wave movements of the medium are smoothed The response of the outputs in case of a fault is adjustable 6 6 The unit has a maximum value memory for temperature The stored value can be indicated and deleted via pushbutton 4 Mounting M mounting zone Fix the mounting elements within the M area e Mounting elements must be fixed above the measuring segment OP and at a minimum distance to OP see value y measured to the middle of the segment e Minimum distances between the probe and the tank wall metallic objects in the tank B tank bottom and other level sensors must be adhered to The distances x y and w depend on the medium set MEDI MEDI OIL1 MEDI OIL2 3 LT8022 LT8023 LT8024 cart For mounting in plastic pipes plastic tanks the inside pipe diameter must be min 12 cm 4 8 inch For mounting in metal pipes the inside pipe diameter d must be at least MEDI OIL1 MEDI OIL2 Marking of the installation height Fix the set installation height with the supplied stainless steel tube clip If the sensor is removed from the fixture for maintenance reasons the clip serves as a limit stop when remounting the sensor Thus an inadvertent maladjust ment of the sensor is excluded This is in particular necessary for the correct fu
9. ange temperature below the minimum value Measurung range temperature exceeded ErrO Err2 En Err8 Faults in the electronics the unit must be replaced OP segment dirty clean the probe and carry out a reset Err1 Or OP segment faulty the unit must be replaced Operational reliability not ensured sources of interference faulty wiring Err3 Check the electrical connection the connection between the sensor and the tank ground 5 Electrical connection and the mounting conditions 4 Installation Err4 Adjustment fault distance between OP segment and the mounting elements or the medium too small Adjustment fault mounting element below OP segment detected Adjustment fault measured value not constant Temperature measuring element faulty the unit must be replaced SC1 SC2 _ a E SC3 SC4 Flashing short circuit in the switching output 1 2 3 4 Resetting the error messages carry out the OP adjustment again or power off and on again 19 7 2 Changeover between level and temperature indication Briefly press the Set pushbutton in the Run mode The other measured value is displayed for 15 s 7 3 Read reset maximum value memory temperature Press until HI T is displayed Press briefly Return to the menu Erase the memory Press the Mode Enter button until Hi T is displayed Press the Set button and keep it pressed until is displayed Then press the Mod
10. c is indicated briefly when you try to change parameter values The sensor can be programmed before or after mounting Exception For the adjustment of the reference element OP the unit must be installed in the tank For programming carry out the following steps in the indicated order 6 1 Selection of the display unit Select the display units cm inch or C F before setting the values for the parameters for SPx rPx OP This avoids rounding errors generated internally during the conversion of the units and enables exact setting of the values Setting at the factory Uni L cm Uni T C 10 If the factory setting is to be maintained skip step 1 and continue with step 2 E i i JAGE Mode Enter Set ge aut ai Press and hold until the Press until Uni L display l unit for level is displayed ka a or inch Confirm return to the menu Another press of the pushbutton Mode Enter opens the menu point Uni T display unit for temperature Set the requested unit C or F 6 2 Setting to the medium The sensitivity of the sensor can be set in 2 steps Setting Sensitivity Special e g synthetic oils or media with a OIL1 low dielectric constant that is a little higher than that of mineral oils Mineral oils dielectric constant 2 OIL2 Also select this setting if the medium is detected with OIL2 but on the whole the sensor sensitivity is too high In case of doubt ensure the correct
11. e Enter button briefly 7 4 Read the set parameter values e The parameter names are scrolled with each pressing of the Mode Enter button e When the Set button is pressed briefly the corresponding parameter value is displayed for 15 s 7 5 Output response in different operating states OUT1 OUT2 OUT3 OUT4 level temperature Initialisation OP adjustment not carried out according to the temperature according to the level and and OUT3 OUT4 setting OP adjustment carried out OUT OUT setting Fanit according to the according to the FOU1 FOU2 setting FOU3 FOU4 setting 20 8 Technical data Operating voltage V Current rating mA Short circuit protection pulsed protected against reverse polarity and overload Voltage drop V Current consumption mA Level monitoring Accuracy of switch point of value of measuring range cceceeesseeeeeeseseeeeeeees t5 Repeatability of value of measuring FANGE sceesesssssetssessersessseserereesesseeees 2 Max speed of the level change mm s Temperature monitoring Pe CACY mia mea e atasata at tal e nai ae ae ae d a ae t1 Resolution K 0 5 Dynamic response T09 s Dielectric constant medium Max tank pressure bar when mounted using ifm mounting accessories 0 5 Housing materials Stainless steel FKM NBR PBT PC PEI PP TPE V Materials wetted parts Protection Operating temperature C
12. e buttons is pressed the current measured value is displayed for 155 6 6 Setting of the output response in case of a fault Press until FOU1 is Press and hold until the l ee Confirm return to the menu displayed requested value is indicated FOU1 FOU2 FOU3 FOU4 response of output 1 output 2 output 3 output 4 in case of a fault 16 2 settings can be selected On output x switches ON in case of a fault OFF output x switches OFF in case of a fault Setting at the factory FOU1 FOU4 OFF A hardware fault or an adjustment error for example is considered to be a fault 7 1 Overflow is not considered to be a fault 6 7 Adjustment of the reference element OP After mounting electrical connection and programming the unit must be adjusted UK to the tank This is done by the OP adjustment The monitoring functions for level are only active after this adjustment If it is not carried out only the functions for temperature indication and monitoring are active Level indication and the switching outputs OUT1 and OUT2 remain blocked the display indicates During the adjustment the OP segment must not be covered by the medium Minimum distance z between OP and medium 20 08 35 14 50 20 If the tank is very full empty it a little or if possible increase the OP value Ensure that the minimum distances x and y are adhered to chapter 4 Adjustment operation
13. ed requested value is indicated l Set OP before setting the switch points for level SP1 2 rP 1 2 If the OP value is reduced to a value lt SPx after switch point setting the SPx values shift down ward The setting values for OP and the setting ranges for SPx and rPx are indicated in the following tables Please note The setting values for OP and the setting ranges for SP1 2 and rP1 2 apply to OFS 0 for OFS gt 0 they increase by the set OFS value Setting values for OP LT8024 cm 69 139 5 6 4 7 4 8 3 9 3 13 9 9 0 4 CO OI 8 109 55 2 64 2 188 74 2 83 3 93 5 88 3 5 5 5 6 9 2 6 0 3 7 1 4 4 24 80 407 10 27 32 16 37 42 2 O47 2 180 51 261 103 56 28 641 a 66 2 75 2 7 22 af 4 2 47 5 1 5 6 6 1 fell 15 13 Setting range for SP1 2 rP1 2 level AL increments rPx is always smaller than SPx SPx is always smaller than OP If the value for OP is reduced to a value lt SPx the position of SPx also shifts If the value for SPx is reduced to a value lt rPx the position of rPx also shifts e frPx and SPx are close together about 3 x step increment rPx is changed automatically when SPx is increased lf there is a greater difference between rPx and SPx rPx maintains the set value even if SPx is increased Setting range for SP3 4 rP3 4 temperature AT
14. gment of the probe is defined as reference point 6 4 It fulfils 2 functions Adaptation to the application Reliable start up For the automatic adjustment the OP segment generates a measured signal The software checks it and adjusts the unit optimally to the tank to be moni tored In case of a successful adjustment the display indicates rdy The unit is ready for operation If the adjustment cannot be made an error message Is given 7 1 Overflow protection During the operation the OP segment is monitored continuously and serves as a reference point for an independent overflow protection The position of the OP segment is programmable The set value refers to the middle of the measuring segment Typically OP already reacts when the OP segment is reached The overflow switch point OP has a fixed hysteresis of a few millimetres The response time when switching on the overflow alarm typ 450 ms max 720 ms OP is the maximum limit of the measuring range The switch points are always below OP If OP is shifted to a value lt SPx the position of SPx is also shifted downward Note The outputs OUT1 and OUT2 switch when the set switch points are reached but at the latest with reaching OP overflow protection 3 3 Further functions The zone between tank bottom and lower edge of the measuring probe can be entered as offset value OFS 6 3 Thus display and switch points refer to the real level The sensor can be
15. ing and a cable piece with a wire cross section of min 1 5 mm that is as short as possible The unit conforms to the standard EN 6100 6 4 The unit may cause radio interfer ence in domestic areas If interference occur the user must take appropriate remedial actions 6 Programming Use of pushbuttons e The parameter names are scrolled with each pressing of the Mode Enter button e When the Set button is pressed briefly the corresponding parameter value is displayed for 15 s the value is not changend the internal sensing processing and output functions of the unit continue as if in Run mode e While viewing a parameter value pressing the Set button for more than 5 s causes the unit to enter the programming mode The current parameter value flashes for 5 s then the value is increased Decrease the value Let the display of the parameter value move to the maxi mum setting value Then the cycle starts again at the minimum setting value Timeout If no pushbutton is pressed for 15 s during the programming procedure the unit returns to the Run mode with unchanged values exception cOP Locking Unlocking The unit can be electronically locked to prevent unwanted adjustment of the set parameters In the Run mode press programming buttons for 10 s As soon as the indication goes out the unit is locked or unlocked Units are delivered from the factory in the unlocked state With the unit in the locked state L a
16. nction of the overflow protection The clip is fitted using common nipper pliers Ensure a correct fit To remove the clip it must be destroyed Mounting accessories Flange plate 73 90 aluminium stainless steel eee order no E43001 Welding adapter stainless steel eee eee order no E43002 Mounting adapter G3 4 stainless steel nene ee eee order no E43003 Mounting adapter G1 stainless steel eee order no E43004 Flange plate 100 125 aluminium stainless steel eee order no E43005 Flange plate 65 80 aluminium stainless steel nenea order no E43006 Flange plate 54 52 x 52 aluminium stainless steel cccseeeeeeeeees order no E43007 5 Electrical connection The unit must be connected by a suitably qualified electrician The national and international regulations for the installation of electrical equipment must be observed Voltage supply according to EN50178 SELV PELV supply class 2 to cULus Disconnect power before connecting the unit as follows l core colours l core colours Pin connection fiii GOI sockets following DIN 47100 Connector 8 pole on connector 4 pole are available as accessories order no E11228 Y connection cable order no E11627 T Splitter box For safe function the sensor housing must be electrically connected to the vessel wall To do so use the housing connection see scale draw
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