WR200-D - heat energy meter for steam - 2 Pages

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WR200-D - heat energy meter for steam

Catalog excerpts

HEAT ENERGY METER WR 200-D for steam Heat transfer steam Temperature range 100... 600 °C 1...100 bar pressure range Pressure input mA 0/4...20 Any flow sensor with analogue signal connected 2 x Pt100 inputs for steam and condensate temperature Coefficient calculation for IAPWS-IF97 Backlit alphanumeric LCD display (4 x 20 characters) Built-in clock with automatic calendar to 2099 Counter for heat and steam Resettable counters for variable periods 4 analogue outputs for instantaneous values ​​ 2 pulse outputs for M-Bus connection (optional) Housing for snap-rail or wall mounting (IP55) Accessories for panel installation Description The heat meters WR 200-D is used for detecting the heat energy in heating or steam production systems as a heat carrier. The heat output from given in a closed system (steam condensate flowing back =) is calculated using the formula: with P Qm r ΔTD CPD ΔTK cpK = heat output in kW = steam flow in kg / h = heat of vaporization in kJ / kg = temperature difference between steam temperature and saturation temperature = specific heat capacity of vapor in kJ / kg · ° K = temperature difference between saturation temperature and condensate temperature = specific heat capacity of water in kJ / kg · ° K subsequently, the actual flow and the current thermal power integrated over time and added up to two counters. For counting on an adjustable period, two other resettable counters in conjunction with a clock with automatic calendar available. All measured and counted values are displayed with their physical units on an illuminated four-line alphanumeric LCD display. The thermal coefficients of water and steam are calculated according to IAPWSIF97 for a pressure range of 1...100 bar and a temperature range of 0...600 °C. Arthur Grillo GmbH · Ratingen The meter is for the connection of any flow sensor with analog signal provided. For the pressure measurement, a further analogue input is available 0/4...20 mA. For temperature measurement two Pt100 inputs are available in four-wire circuit. Dimensions (mm) rail housing External records, the unit provides four analog output signals 0/4.20 mA and two pulse outputs can be connected to an M-bus module. All components are housed in a housing profile for snap track mounting with external clamps. Accessories for panel mounting parts and a plastic housing for wall construction are also available. Arthur Grillo GmbH · Ratingen 135 Arthur Grillo GmbH · Ratingen Dimensions (mm) wall constuction panel mounting panel cut-out

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HEAT ENERGY METER WR 200-D for steam Specifications Heat carrier: Temperature range: Pressure range: Temperature inputs: watersteam 100...600 °C 1...100 bara 2 x Pt100 four-wire circuit for steam- and condensate temperature, from the same line no required Flow input: 0/4...20 mA, direct supply of a two-wire transmitter, supply voltage approx. 18 Vdc 0/4...20 mA, direct supply of a two-wire transmitter, supply voltage approx. 18 Vdc characteristic of the flow input linear or square root determination according to data from IAPWS-IF97 backlit alphanumeric LCD-display, 4 x 20 characters, all...

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