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4-20ma Rs485 Digital Water Gauge Gas Differential Pressure Transmitter Sensor
4-20mA Rs485 Digital Water Gauge Gas Differential Pressure Transmitter Sensor Description:
4-20ma Rs485 Digital Water Gauge Gas
Differential Pressure Transmitter Sensor is a fully isolated
intelligent field measurement instrumentwith HART communication
protocol optional, developed by our company.
The transmitter uses a fully isolated circuit
technology design, and the sensor signals of the power supply box
are isolated andprocessed, which greatly improves the stability and
anti-interference ability of the whole equipment.
In addition to the three basic function buttons for adjusting the
zero, range and zero pressure of previous smart transmitters,the
transmitter is also designed to be used in combination with the
three buttons M, S, and Z on the display. (You can set the
measurement range without adding pressure, modify the zero and full
pressure values), set display engineering units, linearity,square
root conversion, set damping time, and fixed current output.
The transmitter also has parameter data backup
and recovery functions. When data is damaged, it can be restored
online with three keys, with which can immediately back up the
modified data.
The key functions of the transmitter can be
adjusted by communication software or Hand-hold device from our
company.
It is widely used in industrial applications
with extreme chemical and mechanical loads field and high
electromagnetic radiation
occasions.
4-20mA Rs485 Digital Water Gauge Gas Differential Pressure Transmitter Sensor Parameters:
| Signal output | Two-wire 4 ～ 20mA isolated DC signal superimposed HART, digital signal output, can output large current not exceeding 22mA. |
| Power supply | DC 12 ～ 45V; during HART communication, the power supply voltage range: 15.5 ～ 45VDC; General working voltage 24VDC. |
| Load range | In HART communication, the resistance in the power circuit is ≥250 ohms, and the power supply voltage is ≥15.5 volts |
| Communication distance | The diameter of the connecting wire is greater than 0.6mm, and the communication distance is about 1500 meters. |
| Display | Intelligent LCD, backlight 5 digits and a half digital display |
| Zero and span shift | The lower limit of the measurement range is not lower than the lower limit of the large measurement range, |
| and the upper limit does not exceed the upper limit of the maximum measurement range, that is, the working range does not exceed | |
| the sensor the limit value, zero position and range can be set at any corresponding point of 4 ~ 20mA. | |
| Zero pressure fine adjustment | use F3 key or code potentiometer knob to correct the error caused by transmitter installation |
| position change or zero position drift, and adjust the pressure of transmitter to zero pressure value. | |
| Damping value | electronic damping adjustable range 0-32 seconds. |
| Fault alarm | when the self diagnosis program detects a fault, the analog output is higher than 20.8ma or lower than 3.9ma. |
| Temperature and lodging compensation | the computer collects temperature data and sends it to the transmitter for temperature compensation. |
| Temperature indication | indicates the field ambient temperature value of the transmitter. |
| Working temperature | electronic circuit: - 40 ~ + 85 ℃, with LCD: - 30 ~ + 80 ℃ |
| Sensitive element (silicone oil filled) | - 40 ~ + 104 ℃ |
| Sensitive element (filled with inert oil) | - 18 ~ + 71 ℃ |
| Safety protection | and circuit protection design, anti-static impact, surge current, strong overload protection function. |
4-20mA Rs485 Digital Water Gauge Gas Differential Pressure Transmitter Sensor Features:
