s 5 378 Ultrasonic heat and cooling energy meters 2WR6.. Ultrasonic heat and cooling energy meters to measure flow and energy in hydronic heating or cooling circuits.
Use The 2WR6.. heat and cooling energy meter is used to acquire energy consumption in a physically correct way. The device consists of a flow measuring section, 2 ready connected temperature sensors and a processor to calculate the energy consumption based on the flow rate and the temperature differential. The 2WR6.. is of compact design and therefore ideally suited for use in apartments. It is available for heat or cooling energy. Restrictions Temperature sensors and battery of the 2WR6..
Type summary 2WR6.. The types of ultrasonic heat meters listed below are equipped as follows: Rated flow 3 0.6 m /h Rated flow 3 1.5 m /h Rated flow 3 2.5 m /h Place of installation Return Rated pressure PN 16 Length of control cable Sensor mounting 1.5 m Return sensor, integrated in the flow measuring section Temperature sensor type Pt500, Ø 5.2 mm, length = 45 mm Pt500, DS M10x1, length = 27.5 mm Power supply Battery with a life of 11 years or AC/DC 24 V Temperature sensor cable length 1.
Component Mounting set for L = 130 mm consisting of: - 1 spacer 1", length 130 mm - 2 fittings G 1 B" with coupling nut G 1 B" - 1 protection pocket for flow sensor Ø 5.2x45 mm, incl.
Programming accessories Read and parameterization software Component Ball valve Rp 1" to mount sensor DS M10x1 mm, length 28 mm, max. water temperature 130 °C, PN 25 Ball valve R ½" with union nut G ¾" Ball valve R ¾" with union nut G ¾" Ball valve R ¾" with union nut G 1" Ball valve R 1" with union nut G 1" Adapter for ball valve to install sensor DS M10x1 mm, length 38 mm Mounting kit for direct mounting of sensor Ø 5.
Ordering When ordering, please give quantity, description, product no. and stock number. Order numbers Product no. Stock number Description 2WR605-MBE S55561-F100 Ultrasonic heat meter Scope of delivery The 2WR6.. is supplied complete with Mounting Instructions in different languages, 2 gaskets and a seal.
Display The 2WR6.. has an easy-to-read 7-digit LCD to show different readings (e.g. energy or volume). The meter’s display is arranged in the form of 2 loops: - User loop - Service loop When making a short press (<2 seconds), the user loop appears, showing line by line. After the last line, the first line reappears. When making a long press (>10 seconds), the service loop returns to the first line. Short presses then show the loop’s individual lines.
123 --.--.-31.07.12 1234567 1234567 8 Fh C kWh 3 m Fh Missing hours previous year Code input for parameterization Storage day month 1…15 Press button >3 s Energy previous month on due date Volume previous month on due date Missing hours previous month on due date For a period of 15 months on the monthly due date, the meter stores the values of … - energy (meter reading), - volume (meter reading), and - missing hours (metering hours).
Mounting Flow measuring section Note The meter’s mounting position is optional, the place of installation (return or flow) must correspond to the type of meter used. The flow measuring section must always be installed in the return. Inlet or outlet settling paths are not required. If the meter is installed in the common return of 2 heating circuits (e.g. space heating and DHW), the place of installation must have an adequate distance from the T-piece (min.
Transducer cover Permissible mounting position when metering cooling energy Processor The ambient temperature at the processor must not exeed 55 °C. Direct sunlight must be avoided. For water temperatures between 10 °C and 90 °C, the processor can be left on the flow measuring section or can be secured to the wall (detached mounting). To reposition the processor, remove it from the flow measuring section, turn it by 90° or 180° and replace it on the adapter plate until it snaps into place.
Technical data Processor Power supply alternatively - Battery - AC/DC 24 V Function data Battery - Battery type - Battery voltage - Battery service life Lithium battery (cannot be replaced) 3.6 V 11 years Via external SELV - Voltage range - Frequency - Maximum power consumption - Length of connecting cable - Galvanic separation AC 12…36 V or DC 12…42 V 50 / 60 Hz or DC 0,8 VA 1.
Communication Optical interface - Design Protocol Similar to EN 62056-21 As per EN 13757-2 / -3 M-bus interface - Voltage Vmax. - Current draw - Addressing - Permissible average reading frequency 50 V 1.3 M-bus loads Primary or secondary 1x every 3 hours @ 2400 Bd 1x every 24 hours @300 Bd as per EN 13757-2/-3 Pulse output - Pulse valency - Pulse duration - Voltage - Current - Classification - Voltage drop - Dielectric strength 1 pulse per kWh or MJ/1 pulse/100 liters 100 ms Max. 30 V Max.
Connection diagram Power supply AC/DC 24 V and M-bus Battery power supply and M-bus Dimensions Dimensions in mm 13 / 14 Siemens Building Technologies Ultrasonic heat and cooling energy meters 2WR6..
Temperature sensor 45 mm for protection pocket mm for direct fitting Protection pocket Temperature sensor 27.5 Adapter Mounting sensor adapter set 2012 - 2014 Siemens Switzerland Ltd. Subject to change 14 / 14 Siemens Building Technologies Ultrasonic heat and cooling energy meters 2WR6..
