Fill Fluids

BSO-02 is a silicone fill fluid designed for high temperature applications. Due to the composition the BSO-02 has a good thermal stability for a long lifetime and mostly used in high temperature applications. The high temperature specifications are can only be met with a higher static pressure up to 13.5 bar.

BSO-18 is a silicone fill fluid designed as a fluid for diffusion pumps  for applications where high vacuum in combination with elevated temperatures are present. In cold outdoor applications its relative high viscosity might result in longer response times. Under those conditions, heat tracing and/or insulation of capillaries is recommended or a temperature compensator can be applied. Typically used for applications with high vacuum in combination with high temperatures

BSO-20 is a silicone fill fluid designed as a fluid for applications where high vacuum in combination with elevated temperatures are present. The fill fluid is not recommended for cold outdoor applications. Under these conditions, heat tracing and/or insulation of capillaries is recommended, or a temperature compensator can be applied. Its high viscosity may result in long response times. Typically for applications where high vacuum in combination with high temperatures

BSO-21 is a silicone fill fluid designed for applications where high vacuum in combination with elevated temperatures are present. Major difference with the BSO-20 is that it is better suitable for lower process temperatures. Typically for applications where high vacuum in combination with elevated temperatures are present.

BSO 22 fill fluid is the most commonly used silicone based fill fluid in industrial applications. The broad temperature range covers low as well as high temperatures for ambient and process. BSO 22 is seen as Badotherm’s standard fill fluid.

BSO-36 is a silicone fill fluid and because of its low viscosity can be considered as a substitute of BSO-22 in the rare cases where the latter cannot meet the response time requirements. Typically used for cold process and ambient temperatures.

BSO-41 is a silicone fill fluid and because of its very low viscosity should be considered as a replacement of BSO-22 in the rare cases where the latter cannot meet the response time requirements. It considered as an excellent second fill for temperature compensator applications.

BSO-42 is a Badotherm developed blend of silicone fill fluids. It has the same maximum temperature as BSO-20 but far lower freezing point and lower viscosity resulting in better response time performance than BSO-20. As such it is the standard fill fluid for high temperature applications. Typically for high temperature applications

BSO-48 is a Badotherm designed blend of silicone fill fluids. It has better temperature specification then the BSO-42 (another Badotherm blend) especially a better  performance at low pressure (high vacuum) combined with high operating temperatures. As such it is an appropriate fill fluid for the boundaries of high temperature
applications. Typically for high temperature applications.

BSO-01 is an inert PCTFE fill fluid. This fluid has a reported freezing point of -125°C, but the temperature limit is set at a higher temperature to allow the Diaphragm Seal System to function properly.

BSO-03 is an inert PCTFE fill fluid. This fluid has a reported freezing point of -93°C, but the temperature limit is set at a higher temperature to allow the Diaphragm Seal System to function properly.

BSO-06 is an inert PCTFE fill fluid. This fluid has a reported freezing point of -40°C, but the temperature limit is set at a higher temperature to allow the Diaphragm Seal System to function properly.

BSO-25 is an inert PFPE fill fluid typically used in chorine and oxygen applications. Used in silicon free environments and can be used for chlorine and oxygen applications
This fluid is not approved for food or pharmaceutical applications.

BSO-40 is the standard fill fluid for food and pharmaceutical applications. It has FDA approvals 21CFR 172.856 as direct and 21CFR 174.5 as indirect food additive. Its CAS registration number is 68583-51-7. It is a derivate of coconut oil and propylene glycol. This fluid is approved for food or pharmaceutical applications. FDA approvals 21CFR 172.856 and 21CFR 174.5. CAS registration number is 68583-51

BSO-46 is a highly stable synthetic silicone fill fluid designed for high temperature applications. Due to the composition the BSO-46 has a good thermal stability for a long lifetime and mostly used in high temperature applications. This fluid has the good long term stability when used above ATM pressures at higher temperature.

Many of the Badotherm pressure gauge series have the option of being liquid filled, to decide whether you need a liquid filling consider the below following conditions such as vibration, pulsation, fogging, or corrosive environment.  in the attached PDF all fill fluids are listed and explained.

BSO-21 is a silicone fill fluid designed for applications where high vacuum in combination with elevated temperatures are present. Major difference with the BSO-20 is that it is better suitable for lower process temperatures. Typically for applications where high vacuum in combination with elevated temperatures are present.

BSO-46 is a highly stable synthetic silicone fill fluid designed for high temperature applications. Due to the composition the BSO-46 has a good thermal stability for a long lifetime and mostly used in high temperature applications. This fluid has the good long term stability when used above ATM pressures at higher temperature.

BSO-42 is a Badotherm developed blend of silicone fill fluids. It has the same maximum temperature as BSO-20 but far lower freezing point and lower viscosity resulting in better response time performance than BSO-20. As such it is the standard fill fluid for high temperature applications. Typically for high temperature applications

BSO-20 is a silicone fill fluid designed as a fluid for applications where high vacuum in combination with elevated temperatures are present. The fill fluid is not recommended for cold outdoor applications. Under these conditions, heat tracing and/or insulation of capillaries is recommended, or a temperature compensator can be applied. Its high viscosity may result in long response times. Typically for applications where high vacuum in combination with high temperatures

BSO-02 is a silicone fill fluid designed for high temperature applications. Due to the composition the BSO-02 has a good thermal stability for a long lifetime and mostly used in high temperature applications. The high temperature specifications are can only be met with a higher static pressure up to 13.5 bar.

BSO-48 is a Badotherm designed blend of silicone fill fluids. It has better temperature specification then the BSO-42 (another Badotherm blend) especially a better  performance at low pressure (high vacuum) combined with high operating temperatures. As such it is an appropriate fill fluid for the boundaries of high temperature
applications. Typically for high temperature applications.

BSO 22 fill fluid is the most commonly used silicone based fill fluid in industrial applications. The broad temperature range covers low as well as high temperatures for ambient and process. BSO 22 is seen as Badotherm’s standard fill fluid.

BSO-03 is an inert PCTFE fill fluid. This fluid has a reported freezing point of -93°C, but the temperature limit is set at a higher temperature to allow the Diaphragm Seal System to function properly.

BSO-41 is a silicone fill fluid and because of its very low viscosity should be considered as a replacement of BSO-22 in the rare cases where the latter cannot meet the response time requirements. It considered as an excellent second fill for temperature compensator applications.

BSO-01 is an inert PCTFE fill fluid. This fluid has a reported freezing point of -125°C, but the temperature limit is set at a higher temperature to allow the Diaphragm Seal System to function properly.