ATI’s Model Q40CT blind toroidal conductivity system is designed for online monitoring of chemically aggressive process solutions.  This blind, analog version is ideally suited for applications where reliable instrumentation is critical and economy of installation is essential.

The sensor consists of two metallic ribbon coils that are fixed in place by the sensor jacket material. The drive coil is used to induce a current in the process solution. The second sensing coil is used to measure the current in the process solution, the magnitude of this current is proportional to the conductivity of the process solution.

Toroidal sensors are available in polypropylene and PEEK to ensure sensor wetted materials are chemically resistant to process chemicals. Sensor material is also non-conductive, thereby isolating the sensor from electrical noise and ground loops that can influence the integrity of the measurement. This material also makes the sensor resistant to electrode coating, as most substances do not adhere to the sensor material.

Sensors can be submersion-mounted for easy installation in open tanks or pipe-mounted in the optional 2" tee fitting, which is keyed to the sensor for proper alignment. Tee fitting material is either polypropylene or 316 stainless steel. For larger pipe diameters, the sensor can be insertion mounted through a 1-1/2" NPT ball valve for easy retraction.

The Q40CT toroidal conductivity system is easy to operate, requires minimal maintenance and is economical to own, yet provides reliable measurement of your chemical process.

Conductivity Monitors shall be supplied for continuous monitoring of conductivity in _________ (Specify Application and Location). The conductivity monitoring system shall consist of a loop-powered electronic monitor, without a local display, housed in a NEMA 4X enclosure suitable for wall, pipe, or panel mounting, a toroidal-style conductivity sensor, and accessories listed below. The Conductivity Monitoring System shall be ATI Series Q40CT as described below.

The conductivity sensor shall be a toroidal-style design capable of a measuring range of 500 to 2,000,000 microSiemens with the same cell. The sensor jacket shall be constructed of polypropylene, Kynar (PVDF), or PEEK (poly-ether-ether-ketone).

The sensor shall have a rear ¾" NPT thread to facilitate submersion/tank mounting. The sensor cable shall be encapsulated in the sensor body.

The sensor shall be keyed to fit an adapter that ensures proper sensor orientation when mounted in an optional tee fitting.

The sensor shall include a Pt1000 RTD for high accuracy temperature measurements.

The sensor shall include a chemical-resistant jacketed cable. The sensor cable shall contain three  foil shields for optimum electrical performance.

The conductivity Monitor electronic assembly shall be a loop-powered 2-wire instrument providing an isolated 4-20 mA output proportional to conductivity into a maximum load of 500 ohms.

The complete Conductivity Monitor shall be an Analytical Technology Inc. Model Q40CT, or approved equivalent.