Heat Meter Ultrasonic® UH50 Operating Instructions UH
Contents
1. or GJ Operating elements Warmezahler UH50 A38D DE00 F Klasse 2 EN 1434 Umgebungsklass A a 95 q FabrNr 60 000 173 Qc PASSED Landis Gyr LCD display ULTRAHEAT 50 Displays The places after the decimal point of displayed values are indicated by a surrounding border UH50 Ultrasonic Heat Meter LCD button 1 LCD button 2 Subject to change without prior notice Calibrated values can be recognized by the star symbol shown in addition to the value The displays of of the heat meter are arranged on several levels LOOPs LCD button 2 advances the display of the user loop LOOP 0 cyclically Note Depending on how the unit is parameterized the number of items displayed and the data shown may differ from this description Certain button functions may also be disabled User loop LOOP 0 LOOP g 123456 k T 12345614 123455 gin BBBBBBE k W h Head of loop Accumulated quantity of heat with tariff status Tariff register 1 optional Accumulated volume Segment test Error message with error code number i V V gt LCD button 1 is used to switch the display from the user loop to the selection of service loops LOOP 1 n Service loops selection LOOP i Service loop 1 LOOP Service loop 2 LOOP n Service loop n LCD button 1 advances the display to the next loop After the last loop the user loop LOOP 0 appears again LCD button 22. 3250 006 101 c Heat Meter Ultrasonic Operating Instructions These Operatin UHS0 UH 306 101c Version October 2007 Instructions must be handed to the final user on start u General information The UH50 heat meter combines modern microcomputer technology with innovative ultrasonic measuring technology in which no moving parts are necessary This technology is therefore non wearing robust and largely maintenance free Great accuracy and Stability over a long time ensure true and fair billing of heating costs The quantity of thermal energy given off from the heating water is proportional to the temperature difference between the flow and return temperature and the volume of heating water that flowed through The volume of heating water is measured by an ultrasonic pulse that is first emitted in the direction of flow and then against the direction of flow Downstream the time the pulse travels between the transmitter and the receiver becomes shorter upstream it becomes correspondingly longer The volume of heating water is then calculated from the values measured for the pulse travel times The flow and return temperatures are sensed using platinum resistors The volume of heating water and the temperature difference between the flow and return are then multiplied and the product is summated The result is that the quantity of thermal energy consumed is recorded and displayed in the units kWh or MWh or MJ
3. displays the content of the selected service loop Within a loop the LCD button 2 is used to advance to the next line of the display After the last line of the display the first display line appears again Service loop 1 LOOP 1 LOOP i Head of the loop C34 mh Current flowrate 904 kW Current heat power Ji 56 L Current flow return temperature kis IJH h Hed lea A Pa iJ h 25456 18 Property number 8 digit u4 00506 Date Sit 3wa Yearly set day DD MM HIGHT k Quantity of heat previous year on set day 12456 m Wi 5 00 ke Operating time ae Operating time with flowrate gt Missing time f bt E Volume for previous year on set day Duar Firmware version UH 306 101c Page 1 3 Service loop 2 LOOP 2 In service loop 2 the maxima are displayed LCD button 2 calls the displays one after the other Head of the loop fa 3899 mh Gt 141205 Ma chA kW me Max flowrate at 2s intervals with date stamp Max power at 2s intervals with date stamp Max temperatures at 2s intervals with date stamp for flow and return maximum n MF BO ma Measuring period for maximum calculation Service loop 3 LOOP 3 Service loop 3 shows the monthly values LCD button 1 is used to select a month out of the 18 previous months The data for that month are then opened with LCD button 2 Each further press of LCD button 2 shows the next value for the selected mont
4. for heat quantity pulses Fite Gu250 L Significance for volume pulses Pulse duration in ms for fast pulses mo Previous year s values The electronic unit stores the meter readings for quantity of heat volume the tariff register missing time and flowrate measuring time as well as the current maxima for flowrate power temperature difference flow temperature and return temperature with their date stamps on a yearly set day Monthly values The electronic unit stores the meter readings for quantity of heat volume the tariff register missing time and flowrate measuring time as well as the monthly maxima for flowrate power temperature difference flow temperature and return temperature with their date stamp for 18 months on the set day of each month Note The standard time used is Central European Time CET If daylight saving time is activated storage will be performed accordingly The monthly values can also be read out via the optical and the 20 mA interface Error messages The heat meter constantly performs self diagnostics and can display various error messages Error message FO means flowrate measurement is not possible e g due to air in the volume measuring unit the heating system must be carefully vented Error message F4 means the battery must be replaced Error message F1 F2 or F5 F6 F8 means that the temperature sensor is defective Messages F3 F7 F9 indicate a fault in
5. h DUP UJ Head of the loop Set day for December 2005 co S E3 om T a OTi2g5 M Set day for November 2005 G84 M Set day for July 2004 using LCD button 2 J 2J4S61kWh Quantity of heat on the set day T 2F4S6 7k Whi Tariff register 1 on the set day Po Lo LA On a Volume on the set day Max flowrate on the set day at 2s intervals with date stamp C Ma 3899 mh Pg ri wr ro Co Lm Max heat power on the set day at 2s intervals with date stamp Max temperatures on the set day at 2s intervals with date stamp for flow and return maximum Missing time count on the set day After the last display the previously selected set day is displayed again Pressing LCD button 1 selects the next set day Note If you want to drop out and go directly to the next loop choose a monthly value by pressing LCD button 2 and then press LCD button 1 UH50 Ultrasonic Heat Meter Operating Instructions Service loop 4 LOOP 4 Service loop 4 shows the unit parameters LCD button 2 calls the displays one after the other LOOP 4 Head of the loop E HHHH r hl Current tariff m h at 2s intervals with threshold value 1 Measuring interval for flowrate Measuring interval for temperature Module 1 M bus module M bus primary address 1 M bus secondary address 8 digit Module 2 pulse module chan 1 heat quantity Channel 2 volume at 2s intervals Prt t2500Wh Significance
6. layed on the following lines The number for the firmware version is assigned by the manufacturer UH50 Ultrasonic Heat Meter Operating Instructions EC Declaration of conformity EC design examination certificate DE 07 Ml004 PTB010 Further information e The electronic unit must only be cleaned on the outside Please use a soft damp cloth to do this which can be dipped in a non corrosive cleaning agent e User seals must only be removed by authorized persons for service purposes and must then be replaced You will find more up to date information in the Internet at www landisgyr com Landis Gyr GmbH Humboldtstr 64 D 90459 Nuremberg Germany UH 306 101c Page 3 3
7. the electronics In all these cases please call service UH 306 101c Page 2 3 Functional details If the response thresholds are exceeded and the flowrate and temperature difference are positive the quantity of thermal energy and the volume are summated In the segment test all segments of the display are switched on for test purposes On the yearly set day the meter readings for quantity of heat and volume the values for the maxima and the flowrate and missing times are placed in the previous year memory The flowrate heat power and temperature difference are acquired with the correct sign If the response threshold is not reached the value is preceded by a u The current temperatures are shown together on one line of the display as integers in C To calculate the maximum the heat power and flowrate are averaged over a measuring period of for example 60 min The maximum values from the average calculation are preceded by Ma The 8 digit property number also the secondary address in M bus operation can be set in parameter setting mode The unit number is assigned by the manufacturer The operating time is counted from the first time the power supply is connected Missing times are summated if an error is pending that prevents the heat meter from measuring The date is incremented daily The type of installed modules is displayed If an M but module is installed the primary and secondary address awill be disp
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