Nivotemp NT-ELD
Contents
1 Introduction..................................................................................................................................................................................................................... 3
1.1 Intended Use......................................................................................................................................................................................................... 3
1.2 Functionality......................................................................................................................................................................................................... 3
1.2.1 Liquid level monitoring ......................................................................................................................................................................3
1.2.2 Temperature monitor .........................................................................................................................................................................3
1.3 Ordering instructions NT-ELD.......................................................................................................................................................................... 3
1.4 Scope of Delivery..................................................................................................................................................................................................4
2 Safety instructions......................................................................................................................................................................................................... 5
2.1 Important advice................................................................................................................................................................................................. 5
2.2 General hazard warnings ................................................................................................................................................................................. 5
3 Transport and storage .................................................................................................................................................................................................. 7
4 Setup and connection...................................................................................................................................................................................................8
4.1 Assembly................................................................................................................................................................................................................8
4.2 Electrical connections ........................................................................................................................................................................................8
4.3 Information on the correct operation of reed contacts in Bühler level switches.............................................................................8
5 Operation and control ................................................................................................................................................................................................ 10
5.1 Start-up procedure ...........................................................................................................................................................................................10
5.2 LED statuses ........................................................................................................................................................................................................ 10
5.3 General key functions ....................................................................................................................................................................................... 11
5.4 Keylock enabled .................................................................................................................................................................................................. 11
5.5 Menu overview .................................................................................................................................................................................................. 12
5.6 Changing basic settings ...................................................................................................................................................................................13
5.6.1 Disabling normal error handling................................................................................................................................................... 13
5.6.2 Define switching outputs ................................................................................................................................................................ 13
5.6.3 Set temperature unit.........................................................................................................................................................................14
5.6.4 Set display refresh rate .....................................................................................................................................................................14
5.6.5 Enable/disable keylock......................................................................................................................................................................14
5.6.6 Restore factory settings (Reset) ...................................................................................................................................................... 15
5.7 Switching outputs............................................................................................................................................................................................. 16
5.7.1 Switching output x: Definition of the switching characteristic...........................................................................................16
5.7.2 Switching output x: Upper switching limit (switching point).............................................................................................. 17
5.7.3 Switching output x: Lower switching limit (switch-back point) ..........................................................................................18
5.7.4 Switching output x: Switch-on delay ...........................................................................................................................................18
5.7.5 Switching output x: Switch-back delay .......................................................................................................................................18
5.7.6 Switching output x: Testing the switching output ..................................................................................................................19
5.7.7 Change status LED display function .............................................................................................................................................19
5.8 Analogue outputs ............................................................................................................................................................................................ 20
5.8.1 Analogue output x: Assigning the upper limit......................................................................................................................... 20
5.8.2 Analogue output x: Lower limit assignment .............................................................................................................................21
5.8.3 Analogue output x: Signal type assignment.............................................................................................................................. 21
5.8.4 Analogue output x: Testing the analogue output ................................................................................................................... 21
5.9 Diagnostic options ............................................................................................................................................................................................22
5.9.1 View logbook....................................................................................................................................................................................... 22
5.9.2 Maximum and minimum temperature ......................................................................................................................................23
5.9.3 Define switching output to log ......................................................................................................................................................23
5.9.4 Delay for storing the Min/Max Temperature ............................................................................................................................23
6 Cleaning and Maintenance.......................................................................................................................................................................................24
7 Service and repair......................................................................................................................................................................................................... 25
7.1 Troubleshooting ................................................................................................................................................................................................25
8 Disposal...........................................................................................................................................................................................................................26
9 Appendices..................................................................................................................................................................................................................... 27
9.1 Technical Data NT-ELD.....................................................................................................................................................................................27
9.2 NT-ELD temperature outputs ........................................................................................................................................................................28
9.3 NT-ELD standard pin assignment.................................................................................................................................................................28
iBühler Technologies GmbHBE100026 ◦ 08/2017
