Reliably measure conductivity with PURSense™ sensors
Rosemount 403 and 403VP contacting conductivity sensors are sanitary flange sensors commonly used in water purification systems
in the food and beverage industry. These sensors are ideal for measuring electrolytic conductivity in Water-for-Injection (WFI).
The Rosemount 403 and 403VP contacting conductivity sensors are ideal for measuring
electrolytic conductivity in clean water applications in the pharmaceutical and food and
beverage industries. All wetted polymers are 21CFR177 (FDA) compliant, and the
O-rings also meet USP Class VI requirements. All wetted surfaces have a 16 micro inch
(0.4 micrometer) Ra finish. A certificate of conformance is provided with each sensor.
For a copy of supplier material traceability certificates, order option -99Q8.
Interconnecting VP cable is sold separately (for Rosemount 403VP).
Table 1. Rosemount 403 Contacting Conductivity Sensor ordering information
ModelSensor type
403Contacting Conductivity Sensor
Cell Constant
110.01/cm
120.1/cm
131.0/cm
Flange Size
201-1/2 in. Stainless Steel Sanitary Fitting
212 in. Stainless Steel Sanitary Fitting
Temperature Compensation
_No Selection – Pt-1000
54Pt-100
Optional Options
(2)
(1)
Insertion Length
_No Selection – Standard Insertion Length
36Extended Insertion Length
(3)
Cable Length
_Standard 10 ft. Integral Cable
5050 ft. Integral Cable
Special
_No Selection – Supplier Material Traceability Certificate not Included
99Q8Supplier Material Traceability Certificate Included
Typical Model Number: 403VP-11-20-_-36-99Q8
1.For compatibility with Rosemount 56, 1056, 1057, 1066, and 5081 Transmitters. Also compatible with legacy transmitter models 1055,
54e, 4081, 6081, and XMT.
2.For compatibility with legacy transmitter models 1054, 2054, and 2081.
3.Extended insertion length is 6 inches from inside face of flange to end of sensor.
Figure 1. Rosemount 403 and 403VP Sensor Installation
June 2017
The Tri-Cover tee, clamp, and gasket are supplied by the user. Install the sensor so that it is completely submerged in the process
liquid. Installation in a vertical pipe run is best. If the sensor must be installed in a horizontal pipe run, place the sensor in the 3 o’clock
position.
1. The sensor shall be suitable for the determination of electrolytic conductivity in water for injection and in any water purification
installation where Tri Clamp fittings are used.
2. The sensor shall be available with either 1-½ inch or 2-inch 316 stainless steel sanitary flanges.
3. Electrodes shall be titanium.
4. The insulator shall be PCTFE and shall be compliant with 21CFR177.1380.
5. The O-rings shall be EP and shall be compliant with 21CFR177.2600 and USP Class VI.
6. All wetted surfaces shall have a 16 micro inch (0.4 micrometer) Ra finish.
7. The sensor shall be available with either an integral cable or a Variopol quick disconnect fitting.
8. The sensor shall have an integral platinum RTD for temperature measurement.
9. The sensor shall be Rosemount 403 (integral cable) or 403VP (Variopol fitting) or approved equal.