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Fluidcontrol
Level- and temperature switch
Nivotemp NT MD
Installation and Operation Instructions
Original instructions
BE100022
Bühler Technologies GmbH, Harkortstr. 29, D-40880 Ratingen
11/2020
Tel. +49 (0) 21 02 / 49 89-0, Fax: +49 (0) 21 02 / 49 89-20
E-Mail: fluidcontrol@buehler-technologies.com
Internet: www.buehler-technologies.com
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Table of Contents
Related Manuals for Bühler technologies Nivotemp NT MD
Summary of Contents for Bühler technologies Nivotemp NT MD
- Page 1 Fluidcontrol Level- and temperature switch Nivotemp NT MD Installation and Operation Instructions Original instructions BE100022 Bühler Technologies GmbH, Harkortstr. 29, D-40880 Ratingen 11/2020 Tel. +49 (0) 21 02 / 49 89-0, Fax: +49 (0) 21 02 / 49 89-20 E-Mail: fluidcontrol@buehler-technologies.com...
- Page 2 Bühler Technologies GmbH, Harkortstr. 29, D-40880 Ratingen Tel. +49 (0) 21 02 / 49 89-0, Fax: +49 (0) 21 02 / 49 89-20 Internet: www.buehler-technologies.com E-Mail: fluidcontrol@buehler-technologies.com Read this instruction carefully prior to installation and/or use. Pay at- tention particularly to all advises and safety instructions to prevent in- juries.
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Page 3: Table Of Contents
Nivotemp NT MD Contents Introduction............................................. 3 Intended Use......................................... 3 Functionality......................................... 3 1.2.1 Liquid level monitoring .................................. 3 1.2.2 Temperature monitor .................................. 3 Design types.......................................... 3 Model key.......................................... 4 Scope of Delivery........................................ 4 Safety instructions......................................... 5 Important advice ......................................... 5 General hazard warnings .................................... 6 Transport and storage ........................................ 7 4 Setup and connection ........................................ - Page 4 Nivotemp NT MD Temperature outputs NT MD .................................. 31 Standard pin assignment NT MD .................................. 31 Current settings......................................... 32 Display ranges ........................................ 32 Display resolution ...................................... 32 Menu Sequence Overview .................................... 34 10 Attached documents ........................................ 35 Bühler Technologies GmbH BE100022 ◦ 11/2020...
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Page 5: Introduction
Nivotemp NT MD 1 Introduction 1.1 Intended Use Level switches are used to monitor the liquid level and temperature in fluid systems. Level switches must not be used in highly flammable or corrosive liquids. The medium must not contain particles, particularly metallic particles, to prevent deposits on the float or between the float and switching tube. -
Page 6: Model Key
Nivotemp NT MD 1.4 Model key XX XX XX XX XX NT MD XX XX Options = Oval flange Model designation = Adapter G3/4 to G1 Version LED temperature display 2 x temperature output Connection G3/4 4 x temperature output... -
Page 7: Safety Instructions
Nivotemp NT MD 2 Safety instructions 2.1 Important advice Operation of the device is only valid if: – the product is used under the conditions described in the installation- and operation instruction, the intended application according to the type plate and the intended use. In case of unauthorized modifications done by the user Bühler Technolo- gies GmbH can not be held responsible for any damage, –... -
Page 8: General Hazard Warnings
Nivotemp NT MD 2.2 General hazard warnings The equipment must be installed by a professional familiar with the safety requirements and risks. Be sure to observe the safety regulations and generally applicable rules of technology relevant for the installation site. Prevent malfunctions and avoid personal injuries and property damage. -
Page 9: Transport And Storage
Nivotemp NT MD 3 Transport and storage Only transport the product inside the original packaging or a suitable alternative. The equipment must be protected from moisture and heat when not in use. It must be stored in a covered, dry, dust-free room at room temperature. -
Page 10: Setup And Connection
Nivotemp NT MD 4 Setup and connection DANGER Electric voltage Risk of electric shock a) Always disconnect the unit from the mains before performing work. b) Secure the equipment from accidental restarting. c) The equipment may only be installed, maintained and put into operation by instruc- ted, competent personnel. -
Page 11: Electrical Connections
Nivotemp NT MD 4.2 Electrical connections Electricity is supplied via plug connectors. Please refer to the appendix for installation dimensions, nominal voltage and plug configuration. The temperature switching outputs are PNP transistors (see illustration): Supply voltage Note: When measuring the switching output with high-load measuring device inputs or when used as a frequency output, the load must be set to 10 kΩ... - Page 12 Nivotemp NT MD Voltages and currents All Bühler level contacts with reed switch can switch minimal Switching voltages of 10 µV and minimal switching currents of 1 µA. The maximum values specified for the respective contact types apply. Level contact with reed switches can therefore be used for SPS applications as well as for high loads (within the maximum lim- its) without hesitation.
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Page 13: Operation And Control
Nivotemp NT MD 5 Operation and control NOTICE The device must not be operated beyond its specifications. 5.1 Start-up procedure The device will automatically switch on when connected to power. It will first briefly display the software version, at which time the device will also check the built-in components. -
Page 14: General Key Functions
Nivotemp NT MD 5.3 General key functions The keys below the display are used for operation. The menu controls are detailed in the following chapters. Mode Function – Measurement display: Change measured variables displayed. – In the menu: Move down one menu level. -
Page 15: Menu Overview
Nivotemp NT MD 5.5 Menu overview The menu structure is based on the VDMA standard sheet 24574-1. The menu structure is hierarchic. The top menu level contains the main menu items, e.g. tEMP, F, diA, E. Each main menu has additional submenu items. -
Page 16: Changing Basic Settings
Nivotemp NT MD 5.6 Changing basic settings The general basic settings can be changed under menu Basic Settings Extended Functions (bEF). These settings will affect the measurement display and the configuration options in the various main menus. Here you can also change the switching output assignment. -
Page 17: Set Temperature Unit
Nivotemp NT MD 5.6.3 Set temperature unit This is where the unit symbol for the temperature is configured: t. u ni Selection menu Basic EF b. E F Set Unit Temp Basic Adv. Functions Temperature unit ; C - ; F... -
Page 18: Restore Factory Settings (Reset)
Nivotemp NT MD 5.6.6 Restore factory settings (Reset) Use the Reset function (rES) to restore the factory settings. All changes will be lost. Since this will also reset the limits, you must check the temperature settings. b. E F Reset... -
Page 19: Switching Outputs
Nivotemp NT MD Version with 4 switching outputs: Switching outputs Version with analogue output: Analogue output A1. H i A1. L o A. o u1 Diagnostic settings: Diagnostics SJ. o u out1 dt. M M 0. 0 5.7 Switching outputs All switching outputs are configured the same way. -
Page 20: Switching Output X: Definition Of The Switching Characteristic
Nivotemp NT MD 5.7.1 Switching output x: Definition of the switching characteristic The switching characteristic for the output can be configured under the following menu: ____ Measured variable Out X out_ EF X Set Out X Selection menu Settings menu OUTX... -
Page 21: Switching Output X: Upper Switching Limit (Switching Point)
Nivotemp NT MD Note: The designation of the switching function may vary: Measured variable closed open closed open rising NO contact rising NC contact falling NC contact falling NO contact NO (normally open) NC (normally closed) 5.7.2 Switching output x: Upper switching limit (switching point) -
Page 22: Switching Output X: Switch-On Delay
Nivotemp NT MD 5.7.4 Switching output x: Switch-on delay The menu Advanced Functions is used to configure additional settings for switching output x. The submenu is at the second submenu level. The switching and switch-back delay prevents the alarm being triggered too frequently in unstable conditions. The switching... -
Page 23: Change Status Led Display Function
Nivotemp NT MD 5.7.7 Change status LED display function The LEDs in the display indicate the switching status of the output. The following table shows how LEDs are allocated to the switching output: Numbering Switching Assignment for Assignment for Assignment for... -
Page 24: Analogue Outputs
Nivotemp NT MD The options are: LED = output; LED = -output; the LED lights up when the PNP switching output the LED lights up when the PNP switching output is closed. is open. NOTICE The display function of the status LED affects event logging! Please note chapter “Dia- gnostic options”. -
Page 25: Analogue Output X: Testing The Analogue Output
Nivotemp NT MD 5.8.4 Analogue output x: Testing the analogue output The analogue output can be tested. The highest, mean and lowest analogue value can be output successively. This is configured in menu: ____ Analog OutX Check AnX C. A n_... -
Page 26: Maximum And Minimum Temperature
Nivotemp NT MD The information displayed will alternate between the index and time for entry x, e.g. Jor1 ⇔ 1. 4 h for the most recent event 1.4 hours ago. Press the key to return to the submenu or use to select the next journal entry. -
Page 27: Delay For Storing The Min/Max Temperature
Nivotemp NT MD 5.9.4 Delay for storing the Min/Max Temperature A delay time for saving the minimum and maximum temperature can be set to record reliable values when temperatures fluc- tuate. Here, enter the time span in seconds during which the signal must be continuously present before the temperature is logged. -
Page 28: Cleaning And Maintenance
Nivotemp NT MD 6 Cleaning and Maintenance This device is maintenance-free. The method for cleaning the devices must be adapted to the IP protection class of the devices. Do not use cleaners which could damage the device materials. Bühler Technologies GmbH... -
Page 29: Service And Repair
Nivotemp NT MD 7 Service and repair This chapter contains information on troubleshooting and correction should an error occur during operation. Repairs to the unit must be performed by Bühler authorised personnel. Please contact our Service Department with any questions: Tel.: +49-(0)2102-498955 or your agent... -
Page 30: Spare Parts And Accessories
Nivotemp NT MD Possible errors Problem / Malfunction Possible cause Action Switching output not trigger- – Switching output configured incorrectly – In submenu Coux: “Test Switching Output“ to ing when exceeding limits ensure normal mode – Switching output defect – In submenu Coux: “Test Switching Output” to... -
Page 31: Disposal
Nivotemp NT MD 8 Disposal Dispose of parts so as not to endanger the health or environment. Follow the laws in the country of use for disposing of elec- tronic components and devices during disposal. BE100022 ◦ 11/2020 Bühler Technologies GmbH... -
Page 32: Appendices
Nivotemp NT MD 9 Appendices 9.1 Technical Data NT MD Version Dimensions Operating pressure: max. 1 bar M12x1 Operating temperature: -20 °C to +80 °C Float: SK 161 Min. fluid density: 0.80 kg/dm³ Lengths: 280, 370, 500 mm (standard) LEDs variable to max. -
Page 33: Temperature Outputs Nt Md
Nivotemp NT MD 9.2 Temperature outputs NT MD Choose from the following temperature outputs: 1T-KT Plug (base) 2 x M12 – 4-pin 2 x M12 – 4-pin 1 x M12 – 4-pin 1 x M12 – 8-pin Switching outputs 2 x freely programmable*... -
Page 34: Current Settings
Nivotemp NT MD 9.4 Current settings Switching outputs Basic Settings Diagnostics o. u ni SJ. o u t. u ni dt. M M o. H i o. L o r. o u1 r. o u2 r. o u3 r. o u4... - Page 35 Nivotemp NT MD none (non2) (2 fixed-point numbers) Range x Resolution x < 5 0.01 5 <= x < 10 0.02 10 <= x < 20 0.05 20 <= x < 50 50 <= x < 100 100 <= x Example no unit: Min = 100, Max = 1500 ->...
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Page 36: Menu Sequence Overview
Nivotemp NT MD 9.7 Menu Sequence Overview Main menu Submenu 1 Submenu 2 Submenu 3 Settings and Display Menu Configuration t___ Shortcut Equipment configuration or 60s no action: Exit main/submenu ____ ____ Display Switch ____ ____ Switches the measurement display level/temperature... -
Page 37: Attached Documents
Nivotemp NT MD 10 Attached documents – Declaration of conformity: KX100020 – RMA - Decontamination Statement BE100022 ◦ 11/2020 Bühler Technologies GmbH... - Page 39 RMA-Formular und Erklärung über Dekontaminierung RMA-Form and explanation for decontamination RMA-Nr./ RMA-No. Die RMA-Nummer bekommen Sie von Ihrem Ansprechpartner im Vertrieb oder Service./ You may obtain the RMA number from your sales or service representative. Zu diesem Rücksendeschein gehört eine Dekontaminierungserklärung. Die gesetzlichen Vorschriften schreiben vor, dass Sie uns diese Dekontaminierungserklärung ausgefüllt und unterschrieben zurücksenden müssen.
- Page 40 Dekontaminierungserklärung DE000011 Bühler Technologies GmbH, Harkortstr. 29, D-40880 Ratingen 01/2019 Tel. +49 (0) 21 02 / 49 89-0, Fax: +49 (0) 21 02 / 49 89-20 E-Mail: service@buehler-technologies.com Internet: www.buehler-technologies.com...