Fire water tank level controller high-rise building fire water tower water level controller pumps controller level controller input level meter fire pond water level display controller works - Wan and instrumentation fire water level indicator, fire water and fire tank level gauge, water level control device, the oil level control device, partial pressure type, static pressure, ultrasonic, magnetic over plate and other categories. Used in high roof tanks, cisterns, water plant ... fire water tank liquid level detection, test level, upper and lower alarm, linkage start and stop pumps, pumps for water level control, fire water tank level controller Tall Buildings fire water tower water level controller pumps controller level controller input level meter fire pond water level display controller works - Wan and instrumentation fire water level indicator, fire-fighting and fire protection water tank level gauge, water level control device, oil level control device, partial pressure type, static pressure, ultrasonic, magnetic over plate and other categories. Used in high roof tanks, cisterns, water plant ... fire water tank liquid level detection, test level, upper and lower alarm, linkage start and stop pumps, pumps for water level control, Shenzhen Oriental Million and instrumentation company produced WH311 water level monitor is to use the principle of hydrostatic level measurement or level, it is an important application of the pressure sensor. With micromachining technology to produce high-sensitivity silicon pressure sensitive resistance element is the heart of the level sensor, complemented by a dedicated cable with ventilation ducts and a special water sealing technology, both to ensure the water seal immersion sensor, but also makes reference pressure chamber communicates with ambient pressure to obtain accurate measurements with excellent stability. WH311 level transmitter adopts the international advanced level of dry ceramic capacitive sensor or diaphragm type with temperature compensation of diffused silicon pressure sensor as sensing element, greatly improving the performance of the product. Widely used in petroleum, chemical, power plants, urban water supply and drainage, hydrology exploration and other fields of water and liquid level measurement and control. Features: ☆ use of foreign advanced production technology and laser calibration zero span ☆ ☆ stainless steel diaphragm and fully welded construction ☆ lightning protection, surge protection module for level installation ☆ sturdy, fully enclosed circuit ☆ moisture, Condensation functional performance parameters: Measuring medium water and general non-corrosive liquid measurement range of 0 to 1 m to 0 - 200 m Overload pressure 2 times full scale output signal 4 ~ 20mDCA (two-wire) 1 ~ 5VDC (three-wire) power supply voltage 9 ~ 36VDC medium temperature -30 ~ + 85 ℃ ambient temperature -20 ~ + 85 ℃ Storage Temperature -40 ~ + 90 ℃ Relative humidity ≤95% (40 ℃) ≤5 ms rise time measurement accuracy of up to 90% FS 0.5 level, 0.25 (including non-linearity, repeatability and hysteresis, including a comprehensive error) Temperature drift ≤ ± 0.05% FS / ℃ (temperature range -20 ~ 85 ℃, including temperature effects of the zero and span) Temperature compensation 0 to 70 ℃ Housing material Probe material 304 or 304 stainless steel 316L stainless steel service: 2014 Shenzhen Oriental Million and Instrument Co., Ltd. will launch a two-year guarantee worry-free after-sales service to ensure that customers purchase, worry-free use of the process, namely a In the new replacement machines, hassle-free lifetime warranty service (see specific details of worry-free service). Products WH311 fire-fighting special gauge consists of a transmitter and a secondary water level display tables, level change Transmitter converts a 4-20mA fire water level can transmit electrical signals, transmitted through the cable to the secondary level display table, real-time display of water level changes in the scene, the second table comes with a power supply module, control room only 220V AC can be used, convenient access, high reliability, built-in upper and lower alarm can be flexible according to the site needs to be set high and low level. Million and instrumentation for complete product warranty for two years, beautifully packaged, is the preferred instrument fire water level detection. WH311 input type level transmitter series submersible pressure transmitter selection of internationally renowned company's high-precision, high stability pressure sensor assembly, through high reliability and precision temperature compensated amplifier circuit, the absolute pressure measured medium or Gauge pressure is converted into 4 ~ 20mADC, 1 ~ 5VDC and other standard electrical signal. Its laser calibration of zero full scale, to ensure high stability of the output signal, high-quality sensors, superb packaging technology and improve the assembly process to ensure high-quality and best performance of the product. This product can measure water level and water level, the maximum to meet customer needs. This product has a variety of interfaces and a variety of forms leads the way, applies to equipment for use with a variety of measurement and control. Products Products Products Products front side show the high temperature liquid lead-pressure diagram in Fig split level transmitter connected to the secondary control instrument integrated inspection and certification effect level transmitter level transmitter display with live display showing points style level transmitter map and display instruments directly connected to the advanced technology Figure 1 Built Germany interference ring technology, the output signal more stable, compatible with various industrial site control instruments 2 special 12V battery power can solve the power problem of field 3 Built zero accuracy and long term stability Technical parameters measuring medium water and generally non-corrosive liquids (corrosive ordering) Measuring range 0 - 1 m to 0 - 200 m overload pressure in the drift, nonlinear compensation, ensure that the instrument using a range of conditions 2 times full scale output signal 4 ~ 20mDCA (two-wire) 1 ~ 5VDC (three-wire) power supply voltage 9 ~ 36VDC ≤5 ms rise time measurement accuracy of up to 90% FS 0.5, 0.25 (including non-linearity, repeatability and integrated error including hysteresis) Temperature drift ≤ ± 0.05% FS / ℃ (temperature range -20 ~ 85 ℃, including temperature effects of the zero and span) Temperature compensation 0 ~ 70 ℃ Housing material Probe material 304, 316 or 304 stainless steel 316L stainless steel instrument maintenance knowledge ★ check carefully whether the appropriate use conditions, pay attention to the power supply voltage is DC 24V. ★ dissolved gases lighter than air and organic solvents may damage the transmitter. ★ If there is an anticipated strong fluctuations, you can only use a hard pulse tube, and should be considered for installation in a standpipe. ★ infer changes in the measured liquid to be re-calibration. ★ End assembled device must be vertical insert liquid. ★ pressure tube and the gas at the gas collector connection is easy to leak, the installation should pay attention to. ★ air / steam from the pressure tube can not be out, but can not have obvious bubbles at the connection. 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