NVS-141...186
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SENSORS FOR FOOD AND BIOPHARMA. Level Sensor with G1/2" Thread Hygienic Application/intended use ·· Limit detection of aqueous and conductive media in vessels and pipes with minimum conductivity. The conductivity depends on the evaluation device: 1 μS/cm when using external evaluation units, e.g. VNV series or ZNV-Z, and 10 μS/cm when using the internal evaluation unit MNV-1C or MNV-M. Application examples ·· Limit detection of fluids in vessels (where the sensor is built in from the side) or pipes ·· Full alarm in vessels and tanks where the sensor is built in from the top ·· Empty alarm in vessels and tanks where the sensor is built in from the bottom ·· Product monitoring in pipes ·· Pump/dry-running protection ·· Level control in tanks ·· Overfill protection in dosing systems Hygienic design/process connection ·· Using the Negele EMZ-132 weld-in sleeve or the EHG-.../1/2" weld-in system ensures a hygienic and easily sterilizable installation situation with optimal flow properties. ·· Elastomer-free sealing system provides a connection without gaps and crevices (see CLEANadapt product information) ·· CIP/SIP cleaning up to 143 °C/120 minutes max. ·· All parts that have direct contact with the product comply with FDA regulations ·· Sensor made entirely of stainless steel and PEEK, coating made of PFA ·· Process connections, see CLEANadapt product information, e.g.: Tri-Clamp, dairy flange (DIN 11851), Varivent ... ·· Complies with 3-A Sanitary Standard 74-06 Special features/advantages ·· Defined position of the cable entry ·· Available with or without an integrated level transmitter ·· Different electrical connections available ·· Rods may be shortened and twisted as needed ·· Miniature edition, installation in pipes beginning at DN25 possible ·· Fully molded to avoid condensation Options/accessories ·· High-temperature version available (with 100-mm spacer; for use in processes with constant temperatures of up to 140 °C) ·· Fixed cable also available in other cable lengths NVS-161 Selection of the right sensor type ·· Coating For foamy, adhesive (e.g. yoghurt) and/or wetting media (e.g. alkaline solutions), we suggest using a sensor with a coated rod. Sensors with non-coated rods are only suitable for aqueous, non-adhesive and non-wetting media. ·· Temperature If a sensor with an integrated level transmitter MNV is needed, we suggest using the high-temperature version with a spacer if

Specification Specification of level sensor *) When the MNV level module is integrated, please note the temperatures specified below in the technical data of the level transmitter.

Dimensional Drawings Advice for NVS-143/.../H Tighten the sensor only at the lower, marked in yellow spanner flat (BE = 22 mm)!

Electrical Connection | Configuration Electrical connection without level transmitter Electrical connection with MNV-1C, MNV-M transmitter Instructions on the electrical connection with level transmitters MNV-1C, MNV-M The sensitivity and the switching behavior of sensors with level transmitters may be configured using an electrical connection or a jumper. Please also take note of the figures on the next page. Setting up the MNV-1C, MNV-M level transmitters ■ Connect the supply voltage. ■ Select the switching function (see "Configuration of the level transmitter"). ■ Select the minimum...

Configuration of the MNV-1C, MNV-M Level Transmitters Switching state explanation Configuration of the MNV-1C level transmitter Full indicator: The output is active when immersed Empty indicator: The output is active when not immersed function “full” Level transmitter MNV-1C 1: LED sensor (lights up when the sensor is immersed, independent of the switching function) 2: Terminal block 3: Full/empty jumper 4: Sensitivity jumper function “empty” Standard setting on delivery 3: full 4: 10 kΩ Configuration of the MNV-M level transmitter with NVS-161/M; NVS-163/M; NVS-166/M Sensitivity full alarm...

Installation | Notices | Process Connections General installation ·· If necessary, cut the rods to the required lengths. In doing so, ensure that the compound between the rod and the thread connector is not strained excessively. If using coated rods, do not damage the insulation of the rod part that remains on the sensor. ·· Strip 5 mm of insulation off the tip of insulated rods (the length depends on the conductivity of the medium). ·· Screw the sensor into the sleeve and connect as shown in the wiring diagrams. Do not damage the coating when you mount the sensor in the sleeve. Mounting...

·· When using a pressure washer, do not point the nozzle directly at the electrical connections. ·· No outdoor storage ·· Store in an area that is dry and dust-free ·· Do not expose to corrosive media ·· Protect against solar radiation ·· Avoid mechanical shock and vibration ·· Storage temperature 0...40 °C ·· Relative humidity max. 80% Reshipment ·· Sensors and process connection must be clean and must not be contaminated with hazardous media and/or heatconductive paste. Note the cleaning information! ·· To avoid damage of the equipment, use suitable transport packaging only. Standards and...

NVS-16 (connecting head diameter 18 mm with M12 plug) NVS-18 (connecting head diameter 18 mm with fixed cable 2.5 m; other cable lengths: see at accessories) (without coating, stub sensor EL = 4 mm) (without coating 200 mm, diameter 4 mm) (without coating 200 mm, diameter 8 mm) (coated 200 mm, diameter 4 mm) (coated 200 mm, diameter 8 mm) (without coating 500 mm, diameter 4 mm) (without coating 500 mm, diameter 8 mm) (coated 500 mm, diameter 4 mm) (coated 500 mm, diameter 8 mm) (without coating 850 mm, diameter 4 mm) (without coating 850 mm, diameter 8 mm) (coated 850 mm,...