Rosemount Water Analysis Instruments Analytical 400 / 400VP ENDURANCE General Purpose Conductivity Sensors

Quick Detail:

· Manufactured by Rosemount Analytical

· Process connection: 3/4 inch MNPT

· Temperature: 32 to 221°F (0 to 105°C)

· Temperature (option -60): 32 to 392°F (0 to 200°C)

· Pressure: 250 psig (1825 kPa abs) maximum

· Vacuum: 7.4 psia (51 kPa abs)

· Wetted materials:

o Electrodes; titanium

o Body; 316 stainless steel

o Insulator; PEEK

o O-rings; EPDM

Description:

The Rosemount Analytical Model 400 /400VP Endurance Conductivity Sensor are designed for direct screw-in insertion into process piping using a 3/4-inch MNPT fitting. The Model 400 sensors can also be used in sidestream samples. A 1-inch pipe tee with a 3/4-inch bushing is a suitable flow cell. A 3/4-inch pipe tee can be used with 0.1 and 1.0/cm cells. A transparent plastic flow cell is also available (PN 24091-02).

ENDURANCE sensors are contacting conductivity sensors. They are available in cell constants of 0.01, 0.1, 1.0, and 10/cm. The choice of cell constant depends on conductivity. High conductivity samples require larger cell constants. Consult the analyzer Product Data Sheet for recommended ranges and accuracy.

Sensors with 0.01, 0.1 and 1.0/cm cell constants have concentric titanium electrodes separated by a PEEK insulator. EPDM O-rings seal the internal parts of the sensor from the process liquid. Sensors with 10/cm cell constants have graphite electrodes and an epoxy body.

Electrolytic conductivity is a strong function of temperature, and conductivity readings are typically converted to the value at a reference temperature. To measure temperature, ENDURANCE sensors use a platinum RTD. In metal electrode sensors the RTD is inside the inner electrode. In the epoxy body sensor, the RTD is in a titanium thermowell protruding from the end of the sensor.

The Model 400 sensor is available with Variopol 6 quick disconnect watertight connectors. Wire the interconnecting cable to the analyzer and run the cable to the sensor. The sensor plugs into the cable receptacle. To replace the sensor, simply disconnect the Variopol fitting and plug in a new sensor. There is no need to rewire or rerun cable.

Applications:

Rosemount Analytical 400 and 400VP ENDURANCE™ General Purpose Conductivity Sensors are intended for the determination of conductivity in applications ranging from high purity water to clean cooling water. The sensors are ideal for use in clean, non-corrosive samples having conductivity less than 20,000 uS/cm.*

Both low temperature (221°F/105°C) and high temperature options (392°F/200°C) are available. The pressure limit is 250 psig (1825 kPa abs). The sensor is available with integral cable (Model 400) or with quick disconnect Variopol cable (Model 400VP).

The sensors are intended for direct insertion in the process piping using a ¾ MNPT fitting. They can also be used in a sidestream sample. Cell constants are 0.01/cm, 0.10/cm, and 1.0/cm.

*For dirty or corrosive samples or for samples having high conductivity, a toroidal/inductive sensor such as the Model 228 or 226 is recommended.

Specifications:

Cell constants: 0.01, 0.1, and 1.0/cm

Wetted materials:

Electrodes: titanium

Body: 316 stainless steel

Insulator: PEEK

O-rings: EPDM

Process connection: 3/4 inch MNPT

Temperature: 32 – 221ºF (0 – 105ºC)

Temperature (option -60): 32 – 392ºF (0 – 200ºC)

Pressure: 250 psig (1825 kPa abs) maximum

Vacuum: At 1.6 in. Hg (5.2 kPa) air leakage is less than 0.005 SCFM (0.00014 m3/min).

Cable length (Model 400 only): 10 ft (3.1 m) standard; 50 ft (15.2 m) optional

Competitive Advantage:

PLUG-AND-PLAY with factory-measured cell constant calibration ensures out-of-the-box
accuracy. Contacting conductivity sensors are available in cell constants of 0.01, 0.1, 1.0, and 10/cm.

DIRECT SCREW-IN INSERTION into process piping using a 3/4-inch MNPT fitting.
The 400 sensor can also be used in sidestream samples.

AVAILABLE WITH VARIOPOL (VP) quick-disconnect connectors.

WATER TIGHT CONNECTIONS with concentric titanium electrodes separated by a PEEK
insulator. EPDM O-rings seal the internal parts of the sensor from the process liquid.

TEMPERATURE SENSING PLATINUM RTDS offers versatility.
Temperature: 32 – 221ºF (0 – 105ºC)
Temperature (option -60): 32 – 392ºF (0 – 200ºC)

VERSATILE MOUNTING CONFIGURATIONS with screw-in, retractable, and flow-through options with models 402 and 404.