The PTH seal construction is designed to make the transmitter suitable for mounting to the process without capillary. The connection is according the International Standards of IEC 61518 to fit manifolds. The maximum process temperature is standard 200°C, however optionally this could be increased to higher temperatures, in combination with different fill fluids. Wetted part materials are standard AISI316(L), but can be varied depending on the process conditions.
The question came from a renowned world wide company. Can you help us find a solution to measure pressure in a situation where metal balls are used in a rotating drum. The balls are used to crush carbon into dust. Due to the metal ball impact the use of a standard metal solution was not an option. The R&D department of the end user and the engineering company who designed to process joined forces with Badotherm. This led to a working prototype build from a stainless steel body to which a piece of polyurethane rubber (PU) was vulcanized. The complete construction was treated as a normal diaphragm seal and filled with a standard fill fluid. This construction led to a higher uptime of the machine and a more efficient process for our end-user.
One of the oldest solutions Badotherm has developed was for an end-user in the chlorine production. Over 30 years ago a the question came if Badotherm could help finding a solution for the galvanic corrosion of the diaphragm seals. In these chlorine production processes there was an issue with galvanic corrosion, that led to a short uptime of the diaphragm seals. Our goals was to find a solution where the process media was fully isolated from the diaphragm seal and differential pressure transmitter. The solution is to use an intermediate disc of a specific plastic that was compatible with the process, together with isolating bushes between capillary and AISI316(L) flange, a Tantalum or Alloy C276 diaphragm and a dielectric fill fluid. This is how a fully isolated construction was made. Logically this construction is tested and checked in Badotherm’ s production to ensure the assembly is in perfect condition to function at the end-user production site.
The question of a Dutch end-user was to standardize on a specific temperature gauge with a mounting bracket to fix on the process pipe. This temperature gauge has to include a protection tube to be welded or clamped to the process line. The biggest advantage is that with this specific design a huge standardization step could be made. A lot of different temperature gauge manufacturers, dial design, and bracket types were mounted in the different sites of the factory. This customer specific design started the conversion of all temperature gauges with a surface probe to one simplified design. This led to reduced stock of spare units and ease of installation for the on site maintenance crew. The complete set is supplied pre-assembled to the specific site and can be installed directly out of the box.