CST1 / CST2 Conductivity Probes are used to measure the dissolved salt content in the water of the steam boiler or condensate. The CST1 and CST2 probes are exclusive BOSCH / LOOS probes. They are mounted directly in the heating body, inside a bottle.Pressure : PN 40. LDC : 32 bar. TMA : 239 ° C. Length : 180/300/380/600/800/1000.