Electromagnetic heat meter

　　The electromagnetic heat meter is a meter that measures the heat released by the heat-carrying fluid in the heat conversion system. It uses a high-precision, high-reliability electromagnetic flow meter as a flow measurement, and a high-precision, high-stability platinum thermal resistance for temperature measurement, so that the thermal energy meter has very excellent measurement performance. It can be widely used in heating, heating, air-conditioning and other heat measurement in civil residential districts, office buildings and enterprises and institutions.

　　2. Features:

　　·Using 16-bit single-chip microcomputer for data calculation, platinum thermal resistance for temperature measurement, and electromagnetic flowmeter for flow measurement, with high measurement accuracy,

　　The application is stable and reliable, and the performance is excellent.

　　·The measurement accuracy is not affected by changes in parameters such as the viscosity, density, pressure, conductivity, and fluid distribution of the heating fluid.

　　·There are no resistance parts in the measuring tube, no pressure loss, and not affected by bad water quality.

　　·The measuring flow range is wide, and the flow velocity can be set arbitrarily within the range of 1m/s to 10m/s.

　　·The large-screen LCD backlight has a full Chinese display mode, which can be read clearly in both strong and non-light conditions.

　　There are data such as cumulative heat, cumulative flow, instantaneous heat, instantaneous flow, water inlet temperature, outlet water temperature, temperature difference, etc., which can be displayed at the same time.

　　It can query and display parameters such as flow rate and power failure records.

　　·The enthalpy correction method with random temperature changes is adopted to ensure accurate measurement at different water temperatures.

　　·With DC signal and frequency signal output function, and this function can switch between heat and flow parameters.

　　·It has batch processing (quantitative output), equivalent pulse output, and direct reset function by keying.

　　· RS-485 (RS-232, M-BUS and HART optional) digital communication output, convenient to realize remote communication.

　　·With password protection function, working parameters cannot be modified without a password.

　　3. Basic technical parameters:

　　1. Technical parameters of electromagnetic thermal energy converter:

　　·Power supply: 220V AC (110VAC ~ 245VAC), 24VDC

　　·Power consumption: ≤20W (supporting power consumption)

　　·Accuracy level: 0.5 or 1 (matching accuracy)

　　·Protection level: IP65

　　·Environmental temperature: Class A

　　·Temperature resolution: 0.01℃

　　·Optional temperature measurement range: -30℃ ～ 180℃

　　·Temperature difference measurement range: 1℃ ～ 90℃

　　·Maximum flow reading (m3): 9999999999 (ten digits)

　　·Maximum heat reading (Mwh): 9999999999 (ten digits)

　　· Thermal unit: kJ, MJ, GJ, kwh, Mwh optional

　　·Analog output: 4 ～ 20mA DC / 600 load resistance (can be switched between heat and flow parameters)

　　·Pulse output: frequency 5000Hz, pulse width 0.1ms ~ 999.9ms (can be switched between heat and flow parameters)

　　·Communication: RS-485 (RS-232, M-BUS, HART, etc. optional) 2. Technical parameters of electromagnetic flow sensor:

　　· Nominal diameter: DN50 to DN1400mm

　　·Nominal pressure: 0.6MPa ～4MPa

　　· Lining material: high temperature resistant rubber, PTFE, PFA, F46

　　· Electrode material: stainless steel containing molybdenum, Hastelloy B, Hastelloy C, titanium, platinum/iridium alloy, tantalum

　　·Structure: split type, integrated type

　　·Medium temperature: -30℃ ～ 180℃

　　·Connection method: flange type 3. Technical parameters of temperature sensor:

　　·Sensor type: PT1000

　　·Installation method: protective casing

　　·Temperature measurement range: -50℃ ～ 200℃

　　·Wire length: 0.6m ～ 15m