Jiangsu Huahai M& C Technology Co., Ltd., located in Jiangsu Province, China, established in 2003. Huahai is an ISO9001: 2008 & CE certified enterprise. It is a newly but fast developed enterprise which specializes in industrial process control, research, development, production and services of smart instruments. We have our own R & D Engineers. The flow instruments, pressure instruments, level instruments, temperature sensor & smart digital display regulator produced by our company enjoy good honor both at home and abroad.
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- Electromagnetic Flowmeter
Electromagnetic flowmeter is a kind of inductional instrument designed by Faraday’s law of electromagnetic induction to measure flow of conductive media in the tube. It adopts the technology of insertion of single chip to realise digital excitation and employs CAN local fieldbus. It is the first invention of China and its technology amounts to the leading level at home. Electromagnetic flow meter can realize local indication and output electrical current signal of 4-20mA which can be used to record, adjust and control. Now electromagnetic flow meters are widely used in industrial sectors such as chemical industry, environmental protection, metallurgy, pharmaceutical, paper making, water supply and removal etc.
Besides measuring the flow of general conductive liquid electromagnetic flowmeter can measure the flow of liquid-solid mixed fluid, high-viscosity fluid and salt, strong acid and strong alkali.
- Pressure Transmitter
HHGP type (smart) pressure transmitter has high crowbar strength and good stability. Input span is 0~0.25kPa, 0~10Mpa, 0~40Mpa.
Use object: liquid, gas and steam
Overpressure limit :
Span is the impose below 6Mpa: 0 (absolute pressure) ~14MPA
Span is the impose of 20Mpa: 0 (absolute pressure) ~32MPA
Span is the impose of 40Mpa: 0 (absolute pressure) ~52MPA
Flange can afford 60MPa pressure.
- Absolute Pressure Transmitter
HHAP type (smart) absolute transmitter can realize absolute measurement of gas, distill tower, evaporator and crystallization, etc.
Use objects : liquid, gas and vapor
Overpressure limit: impose 0~14MPa (absolute pressure), pressure transmitter not damaged , flange can afford 60MPa pressure.
- Differential Pressure Transmitter
Using differential capacitance as monitoring principle constitutes capacitance type differential pressure transmitter, inputting pressure is 0~1.2kPa to 0~10MPa, etc.
Use object : liquid, gas and vapor.
Overpressure limit : impose 0 (absolute pressure) ~6MPa pressure on either side of the transmitter. The transmitter is not damaged. The transmitter’s operation static pressure is detailed in the models and specifications sheet.
- Metal Tube Float Flowmeter
HH5 series metal tube float flowmeter is a kind of measuring meter which the flow rate is changing along with the area and is widely used in the process control of industrial automation. It has the merit of little volume, broad measuring range and convenience for use. It can be used to measure liquid, gas and vapor flow especially fits for the flow rate measurement of low flow velocity and little flow rate.
HH5 series metal tube float flowmeter has local indication type and smart remote type with a pointer LCD displaying instantaneous/ accumulated flow rate, upper-limit and lower-limit alarm output, accumulated pulse output, batch control, standard two-wire 4-20mA current output, ect. Additionally, this instrument employs advanced microprocessing central chip and high-quality industrialized components of Motorola corporation to ensure the good performances of flowmeters in all applicational fields.
- Low Differential Pressure Transmitter
Using differential capacitance as monitoring principle constitutes micro-differential pressure capacitance type transmitter, inputting 0-0.06~1.5kPa pressure, outputting 4-20 mA DC analogue signal.
Use object : liquid, gas and vapor.
Overpressure limit : impose 0~6MPa (absolute pressure) pressure on either side of the transmitter. The transmitter is not damaged. The flange can afford 60 Mpa of pressure.
- Negative Pressure Transmitter
HHSP type (smart) capacitance type negative pressure has high accuracy and wide range of use temperature.
Use object : liquid, gas or vapor.
Overpressure limit : impose 0~14MPa (absolute pressure) pressure on either side of the transmitter. The transmitter is not damaged. The flange can afford 60 MPa pressure. Normal operation pressure is not more than 3.45kPa(absolute pressure).
- Flange Type Level Transmitter
HHLT (smart) flange type level transmitter can carry on accurate measurement of level and density for all kinds of containers. Flush flange and insertion flange available, 3 inches or 4 inches, 1501b or 3001b flange, custom-made flange option.
- Differential Pressure/ Pressure Transmitter with Remote Device
HHDP (smart) remote pressure transmitter provides a kind of reliable measuring way for avoiding the measured medium from directly contacting with isolation diaphragm of the transmitter.
Transmitters with remote transmission equipment are suitable for the following operation conditions :
1. Mediums with high temperature should be isolated with transmitter.
2. Measured mediums have corrosion to sensitive scripts of transmitters.
3. Suspending liquid or mediums with high viscosity
4. Measured mediums solidize or crystalize due to change of environment or technological process temperature.
5. Strict purification of measuring head is needed for replacing measured mediums
6. Measuring head must be kept clean and sanitary.
7. Seal pressure container measurement.
- (smart) Diffusive Silicon Pressure Transmitter
Series pressure transmitters choose imported hi-quality diffusive silicon type and ceramics type pressure sensor as sensitive components, and employ application-specific integrated module, through fine temperature shift, zero and non-linearity compensation, to realize accuracy measurement and transmission of medium pressure change of liquid, gas and vapor, etc.
- Diffusive Silicon Pressure Transmitter
1. power : 24VDC output 4-20mA two-wire
zero adjustable range : ±5% F·S
ratio of span: above 3:1
2. span range : -100kPa~0~60MPa
3. load feature : load 0 ~600© (24VDC power supply) keep constant current output
4. explosion separation type : d II BT4, intrinsically safe type ia II CT5
5. overpressure limit : double of upper-limit pressure
6. temperature range : process : -20 ~ 60
7. accuracy rating : ±0.5%
8. stability : ±0.2% F·S
9. weight : about 1 kg
- Diffusive Silicon Level Transmitter
Series level transmitters are the extension and development of pressure transmitter technology. According to the principle that the liquid with different specific gravity are in linear relation to the pressure generating at different height to realize the accurate measurement and transmission of volume, level height and weight of water, oil and paste-state matters. They are widely used in the industries such as power, petroleum, chemical engineering, metallurgy, water utilization, running water, food, etc,
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