Spirax Sarco CP30 is a blowdown conductivity sensor designed specifically for steam boilers. The product uses an austenitic stainless steel body and a 316L stainless steel probe, with a pressure rating up to PN40, and can reliably measure boiler water conductivity or TDS under demanding conditions up to 32 bar g and 239°C. It supports vertical or horizontal installation. Connected to a blowdown controller, it is widely used for continuous blowdown monitoring of steam boiler bodies and for boiler blowdown monitoring at sensor elbows, helping customers achieve precise blowdown control.
Front-view product photo of the Spirax Sarco CP30 blowdown conductivity sensor
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CP30 Blowdown Conductivity Sensor | Spirax Sarco
Steam boiler blowdown conductivity sensor for online monitoring of boiler water conductivity or TDS.
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Specifications
- Measured parameter
- Water conductivity or TDS
- Minimum conductivity
- 10 μS/cm or 10 ppm
- Maximum boiler pressure
- 32 bar g (239°C)
- Pressure rating
- PN40
- Maximum design cold test pressure
- 60 bar g
- Maximum ambient temperature
- 70°C
- Mating connection
- 3/8" BSP or 1/2" NPT female thread
- Electrical connection
- DIN43650 cable socket with Pg11 cable gland
- Maximum cable length
- 100 m (sensor to controller)
- Cable connector ingress protection rating
- IP65
- Probe length
- 300 mm, 500 mm, 1000 mm, 1500 mm
- Wetted parts material
- Austenitic stainless steel/PTFE
- Body material
- Austenitic stainless steel Type 316Ti W/S No. 1.4571
- Probe material
- Austenitic stainless steel ASTM A276 316L
- Minimum immersion depth
- 100 mm (sensor mounted vertically)
- Mounting orientation
- Probes up to 500 mm can be mounted vertically or horizontally; longer probes can only be mounted vertically.
Application scenarios
Continuous blowdown monitoring on the steam boiler body
The CP30 is installed at the steam boiler connection and connected to a blowdown controller. It measures the conductivity or TDS of boiler water online for boiler blowdown monitoring and control. It is suitable for steam boiler conditions up to 32 bar g and 239°C.
Boiler blowdown monitoring with a sensor elbow
The CP30 is installed in a Spirax Sarco sensor elbow and connected to a blowdown controller. It measures the conductivity or TDS of steam boiler water for blowdown monitoring and control.
FAQ
What are the main applications of the CP30 conductivity sensor?
The CP30 is used with a blowdown controller to measure water conductivity or TDS. It is typically used for blowdown monitoring and control in steam boilers.
What probe lengths are available for the CP30, and can the probe be adjusted on site?
The CP30 is available with four standard probe lengths: 300 mm, 500 mm, 1000 mm, and 1500 mm. The probe can be cut to the required length before installation. The specific configuration must be confirmed according to the actual model and application conditions.
What orientation and location requirements apply when installing the CP30?
Probes up to 500 mm in length can be mounted vertically or horizontally. Probes longer than 500 mm can only be mounted vertically. The installation location should allow effective sensing of the boiler water conductivity and should be as far away as possible from the feedwater inlet.
What are the applicable pressure and temperature ranges for the CP30?
The CP30 has a pressure rating of PN40, a maximum boiler pressure of 32 bar g, a maximum temperature of 239°C, and a maximum ambient temperature of 70°C.
What are the requirements for the CP30 wiring and installation connections?
The maximum cable length from the sensor to the controller is 100 m, and the cable connector has an IP65 ingress protection rating. The sensor probe is used with a 3/8 inch BSP or 1/2 inch NPT female thread. It should not be installed outdoors without a protective device.