Pressure of the thermocouple sensor installation considerations

Air pressure telemetry system by the terminal equipment and wiring equipment ( Pressure thermocouple sensors, terminal equipment is located in the interior, its role is to line equipment power supply) Automatic measurement, display and print cable pressure values. Line equipment in line, its function is to convert electrical signals sent to the terminal device, and line equipment is a major means of intake air pressure information, it occupies a pivotal position in the air pressure telemetry system. So, line equipment quality, high and low precision, to reduce the maintenance workload and simplify whipped check process is directly related to the pressure.

the pressure of the thermocouple sensor installation location is also need to pay attention to, in order to determine the pressure of the thermocouple sensor number and specific installation position, need according to the gas network of various inflatable period of consideration.

( 1) Branch points each cable should be 1, if two branch points closer apart ( Less than 100 m) Can be only one.

( 2) Laying cable way change should hold one.

( 3) For no branching cables, because the base line of cable programs, pressure of the thermocouple sensor installation separation not gets 500 m, and make the total number of not less than four.

( 4) Pressure thermocouple sensor must be installed along the cables, it is better to install the cable joint.

( 5) The beginning of the each cable and terminal installation 1 respectively.

( 6) Thermocouple sensor to determine the pressure point of failure, in addition to install pressure thermocouple sensor in starting point, from the beginning of 150 ~ 200 m, and the other one, of course, in the design, installation must consider the factor of economy and technology, in place, do not need to install the thermocouple sensor should be not installed.

with air pressure telemetry equipment production, the pressure of thermocouple sensor is also used on cable. For the normal work of the air pressure telemetering system, pressure thermocouple sensor need to match with air pressure telemetry equipment, coordination. From pressure telemetering system, ways of working to have a run-off dot '' line selection and' line selection type two kinds. So pressure thermocouple sensor failures, be sure to refer to a reasonable solution.