Hi! Simply click below and type your query.
Our experts will reply you very soon.
The BTU meter comprises of an ultrasonic flow sensor and two temperature sensors, base on flow rate and differential temperature of supply / return water to calculate the thermal energy consumption. The flow sensor uses ultrasonic flow measuring technology which measures accurately, and not affected by iron rust contained in the flow and external magnetic field. The meter body is made of cast iron, fabricated by hard mould forging, CNC machines, features with good mechanical strength and high accuracy of dimension. Long-term life cycle, stability and accurate operation of the BTU meters are guaranteed. The temperature sensors use PT1000 platinum resistance matched temperature sensing elements to achieve high-accurate temperature measurement in conjunction with a high-accurate AD circuit. The MCU (Microprogrammed Control Unit) selects the MSP430 series ultra-low power microprocessor from American Tl Company, features with strong functions, low power consumption and strong antielectromagnetic interference capability. With self-diagnosis, fault display and power-loss data memory function, the ultrasonic BTU meter will display error code and store current data automatically in case of sudden failure.
The BTU meter is equipped with LCD screen, showing data completely and accurately in convenient and fast way. Real-time built-in clock is used for date recording and display. The BTU meter features with splittable structure (calculator can be removed from meter body and fixed in other location if necessary), protection class IP68, convenient reading, and single button operation.
|Accuracy grade standard||GB/T32224-2015|
|Maximum flow rate||30||50||80||120||200||250||500||800||1200|
|Optimal flow rate||15||25||40||60||100||125||250||400||600|
|Minimum flow rate||0.6||1||1.6||2.4||4||6||10||16||24|
|Max. working pressure||16 Bar (231 PSI)|
|Max. pressure drop||0.25 Bar (36.2 PSI)|
|Meter body material||Cast steel (stainless steel)|
|Sensing Element||Pt100 / Pt1000|
|Temperature measurement range||4~95。C (over 100。C needs to be customized)|
|Signal cable length||3m (6m and 10m optional)|
|Probe fixing||SS thermowell|
|Differential temperature range||3~70 deg C|
|Temperature resolution||0.01 deg C|
|Working temperature||5~55 deg C|
|LCD display||(8-bit, 10-digit) + special symbol|
|Data protocol interface||infrared, M-BUS and Modbus (RS485 optional) / Bacnet / GPRS / Wifi|
|Built-in battery working life||3.6V high-energy lithium battery, theory lifetime more than 8 years / 24 V DC|