ABB HESG447308R0001 Pulse input module

The combination of the measured flow rate and a temperature difference over a device can be used to determine the amount of energy used by that device. The temperature difference can either be programmed manually in the converter or be measured with temperature transmitters, connected to an optional I/O box. in this case, the temperature difference is determined by measuring the temperature before and after the heat/cold producer/consumer.1 Mounted rail (in any measuring mode) 2 PT 100 temperature sensor, before the heat/cold producer/consumer 3 PT 100 temperature sensor, after the heat/cold producer/consumer 4 Radiator 5 Optional I/O box with temperature option 6 Converter

Preparation of energy measurement 

1 Install a flow measurement as described in the previous chapter. Make sure that the rail and converter are installed close to the location of the place where the temperature sensors must be installed, because of the fixed (limited) length of the sensor cables. 2 Check if temperature transmitters are already available on site. Transmitters are already available on site: Make sure that the basis I/O box basis I/O box basis I/O box is used. Connect the temperature transmitters to the 4...20 mA current input of basic I/O, which is connected to the UFC 300 P. Transmitters are not available on site: Make sure that the Extended I/O box Extended I/O box Extended I/O box is used. In this version, the temperature transmitters are included. Optionally, clamp-on PT 100 temperature sensors can be delivered, with a temperature range of 0...120°C / 32...248°F, including two meter cable and suitable for pipes up to DN300.

Mechanical installation

 Mounting of temperature sensors The delivered PT 100 sensors are clamp-on elements. Clamp them on the pipe with the hose clamp. If the temperature sensors on the pipe have temperature transmitters 4...20 mA it is possible to make use of the standard I/O box. • Connect the PT 100 elements to the I/O box according to the sticker on the I/O box.

Application industry

The products can be used in the following industries: power plant, paper making, steel, mining, rubber, water supply, cement, chemical industry, glass, printing

Textile, machinery, plastics, coatings, medicine, hospitals, food, hotels, scientific research institutions

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