N-LF5R, 0-5 µS conductivity measuring instrument with integrated 3/4" screw-in measuring cell

Product number: 851075
Product information "N-LF5R, 0-5 µS conductivity measuring instrument with integrated 3/4" screw-in measuring cell"

Conductivity meter for conductivity monitoring

Our innovative conductivity meter was developed specifically for monitoring the conductivity of aqueous solutions. With a measuring range of 0 to 5 µS/cm, our device is particularly suitable for monitoring low conductivities, which are typically used in the following processes: 

  • Mixed bed cartridges
  • demineralisation
  • Reverse osmosis (2-stage)
  • EDI (electrode ionisation)

The limit values are indicated by means of digital displays with 2 preset limit values and 2 LEDs (green/red) for visualisation.

The device has a screw-in thread of ¾", which can be customised for easy and safe installation. There is also the option of customised versions with regard to the measuring range and a private label.           

Added value 

  • Operation at 9 V DC via supplied plug-in power supply unit 
  • 1 potential-free relay with switchable mode of operation of relay control 
  • Limit value display optically by means of LEDs 


Height 25 cm
Width 6 cm, 16 cm


Weight 300 g

Other attributes

Country of origin DE
Customs tariff number 90278930
Technical data

Technical data 

  • Measuring range: 0 - 5 μS/cm 
  • Measuring accuracy: 2.5% of measuring range end value 
  • Resolution: 2 decimal places 
  • Limit value displays: Optical by means of LEDs, limit values adjustable between 0 and 100 % of the measuring range 
  • Limit value 1 preset to 1 μS/cm (relay contact) 
  • Limit value 2 preset to 0.5 μS/cm 
  • 1 potential-free relay contact, max. 2 A / 250 V AC, 60 W / 62.5 VA 
  • Power supply: 9 V DC via plug-in power supply unit 100 - 240 V AC 
  • Power consumption: approx. 1 W 
  • Protection class: IP 65 
  • Housing: polycarbonate housing, 82 x 60 x 57 mm 
  • Connections: lateral connection for plug-in power supply and 1x relay output 
  • Measuring cell: ¾", PP, PN 6, Tmax. 60°C