Position: The content of this page is about the RDA precision weighing scale which is able to use in many occasions.
The weighing scale's platform has an integral supply socket that can be switched at a selected level to control external pumps and equipment.
The RDA Precision weighing scale has many uses, and is a popular option in the refrigerant handling industry.
The weighing platform has a flatbed design, a capacity of 120kg and an accuracy of 10grams.
The platform has an integral supply socket that can be switched at a selected level to control external pumps and equipment.
It also has the option of an electronic switch activated by a predetermined weight either on rise or fall.
This transfer control weighing platform was originally designed for the refrigeration industry the platform is also used in numerous other simple fluid transfer and filling applications.
Key features are: * Load capacity up to 120kg.
* Switched socket outlet rated at 10A.
* Adjustable trip point can be set to operate on either rising or falling weight.
* Rechargeable NiMH battery back up for on site weighing.
* Full bridge centre point load cell and digital amplifier for high resolution and weighing accuracy.
* Low profile robust steel construction in durable industrial paint finish.
* Touch pad controls for ease of operation.
* Large digital LCD display.
* UNITS button toggles display between kg and lb/oz.
* HOLD button to interrupt transfer by temporarily de-energising outlet socket.
* Self calibration and compensation for ambient temperatures between -20 deg C and +40 deg C.
* Carrying handle with cable winder 2m mains lead with moulded plug Safety overload stops and audible alarm.
* Hinged cover to protect the fascia.
* Full instructions displayed.
When recovering liquid refrigerant from plant or equipment a recovery cylinder can fill rapidly.
For this reason, particularly with smaller cylinders, it is important to have accurate rapid response weight measurement.
The instrument in the RDA Professional weighing scale samples three times every second, achieving a high weigh accuracy of displayed weight and trip point operation.
For safety it is not recommended to fill refrigerant cylinders to more than 60% of the full capacity in order to allow a vapour space for expansion.
The only safe method of determining the amount of refrigerant or pressurised product contained in a cylinder is by measurement of gross weight.
Calculate the maximum allowable gross weight by addition of the container tare weight and the maximum net fill stenciled on the container.
The Industrial weighing scale may be operated in one of three modes: * Basic scale - the scale will display the gross weight of cylinders placed on the platform either when connected to the mains or powered by an integral battery.
The weight of refrigerant in cylinders or product in partially filled containers can thus be ascertained.
* Automatic trip on rise in weight - this mode is used when operating the scale in conjunction with a refrigerant recovery unit or a pump.
The recovery unit or pump is powered via the mains socket on the fascia and the cylinder is placed on the platform.
The operator is able to pre-set the switching point so that the mains supply to the socket switches at the safe weight limit for the cylinder.
Where it is not practical to terminate flow by switching off power to the recovery unit or pump the weighing scale can be used to power a normally closed solenoid valve in the supply line to the cylinder.
* Automatic trip on fall in weight - this mode allows the weighing scale to be used to control accurate charging applications or for controlling the transfer of product between cylinders.
In addition, a quality weight controller is enable a industrial weighing scale works more safely and high-precision.
