Boiler Sensor SR2

Boiler Sensor 1168374 The SR2, 2 electrode sensor with conduit elbow and 20 foot cable. The SR2 is used for monitoring conductivity in a boiler blowdown line.The SR2 cannot be used after a sample cooler. Body: 316 SS Electrodes:416 SS Max Pressure: 600 psi (41.4 bar) Max Temperature: 486F (252C) Cable: 20 ft High Process thread: 3/4 inch MNPT Conduit connection: 3/4 inch MNPT Does the Boiler Sensor 1168374 have a 4-20mA output or what was the reading that the controller takes in from the sensor? The SR2 sensor has no output at all. The sensor is made up of two rods going through the sensor body. There are no internal electronics in the sensor to generate a 4-20mA output signal from the sensor. The Lakewood Instruments controller sends a signal out to the sensor via two wires and measures the resistance between the sensor tips. This resistance is then converted into a conductivity reading.