Arthur Grillo WR 200-F Descripción y funcionamiento - Página 4
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Description
The heat meter WR 200-F is a microcontroller-controlled computing device for detecting the
heat energy in heating systems with thermal water or other fluids (water-glycol mixtures or
thermal oil). The counting of the thermal energy and the amount of heat carrier is on a 4-line
alphanumeric LCD display with backlight. Through a key scan, all measured and calculated
values are shown with their physical units, date and time.
The heat meters have a built-in clock with automatic calendar up to 2099. Thus in adjustable
periods, energy counts are available via resettable counters.
The temperature of the heat meter inputs are provided for RTD Pt100 DIN 43760 in four-
wire circuit.
To the flow input, any transmitter with the signal range 0 ..20 mA or 4 ..20 mA can be con-
nected. A two-wire transmitter with the signal range 4 .. 20 mA can also be connected,
supplying the transducer is now performed directly from the heat meter.
The characteristic line of flow input can be set linear or square root.
An analog output circuit provides 4 analog signals 0 ..20 mA or 4 ..20 mA. The analog
signals supplied from the calculation circuit and galvanically separated with respect to a
common earth terminal.
For external processing of the counts pulse outputs are provided. Here as an option a M-
Bus loggers can be connected.
For the power supply the voltage 230 V 50 Hz is required. A built-in backup battery secures
the counts during a power failure.
The heat meters are housed in an aluminum profile housing for snap-rail mounting. For
installation in a control panel corresponding mounting hardware is provided. For wall mount-
ing, the heat meter can be mounted in a plastic housing with IP55 protection.
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