Conductivity Node Model NCON
from Lakewood Instruments

NCON Conductivity Node

Conductivity Node,Model NCON,Lakewood InstrumentsThe Conductivity Node (NCON) is a LONWORKS* Technology-compatible node that uses twisted pair communications. The NCON works with several different temperature compensation inputs and with two-or four-electrode sensors. These multiple-sensor input options allow for various conductivity sensors to be used. Temperature compensation is adjustable by percent per degrees Celsius for use with various processes. The NCON’s ability to cover a wide range in conductivity is due to its advanced auto-ranging circuitry. The NCON’s four-electrode circuitry allows for compensation when fouling occurs on sensor electrodes. When sensor fouling can no longer be corrected, the NCON sends a fouled electrode alarm.

The NCON can be used with Osmonics« Lakewood 2000 Series Controllers. On cooling towers, it can be used for chill loop monitoring and control, as well as on the makeup line for multi-setpoint or cycles of concentration control. Up to eight NCON’s may be used with the 2255 Multi Boiler Controller to control up to eight boilers.

One Network Interface Node (NIN) per 2000 Series Controller is required to operate network nodes such as the NCON.


Range 0-200,000 ÁS (with proper conductivity sensor).
Distance Between Two Furthest Nodes
400 m (1312 ft) max. without a repeater.
Power 24 VDC
Node Ambient Temperature
Temperature Compensation
Inputs None 100 PTC
500 NTC 1K PTC
Compensation is adjustable by % per ºC
Accuracy 1% of sensor reading.
Resolution 1% of reading.

* LonWorks is a registered trademark of Echelon Corporation

NCON Cut Sheet

NCON Manual

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