Smart Pressure Transmitter 4-20mA HART Differential Pressure
Transmitter China
Description of Smart Pressure Transmitter 4-20mA HART Differential
Pressure Transmitter China
The Smart Pressure Transmitter 4-20mA HART Differential Pressure
Transmitter will cause changing of capacitance value, analog signal
convert to digital signal via AD and then being transfered to
microprocessor, processed by microprocessor then convertted to
4～20mA analog electricity signal via DA.
The differential pressure transmitter is suitable to measure
liquid, gas, or steam flow as well as liquid level, density and
pressure. Outputs a 4~20mADC signal corresponding to the measured
differential pressure. Its highly accurate and stable sensor can
also measure the static pressure which can be shown on the integral
indicator or remotely monitored via HART communications. Other key
features include quick response, remote set-up using
communications, self-diagnostics and optional status output for
pressure high/low alarm.
Parameter of Smart Pressure Transmitter 4-20mA HART Differential Pressure
Transmitter China
| Output | Analog output: two –wire 4-20mADC |
| Digital output: two –wire 4-20mADC and superimposing variable
digital signal accord with HART |
| Power supply | supply voltage 24VDC |
| Limit load | Max load resistor Rmax in loop decided by the supply voltage, see
the below drawing. HART PROTOCOL require the load resistor not less
than 250Ω,not more than 600Ω |
| Communication distance | Max. 1.5Km, multi-address communication can connect 15 smart
transmitters Max. |
| Display | 4 digital display,5 digit LCD display, pointer type. |
| Explosion-proof | ExiaIICT5;explosion suppression type |
| Zero offset | Can positive transfer or negative transfer, but can not overstep
the utmost value |
| Temperature | ambient temperature -40-85℃(When choose LCD : -20-70℃) |
| Medium temperature | -40～104℃ |
| Static pressure and single side overpressure | 3.45KPa(absolute pressure)～31.2MPa(gauge pressure) |
| Relative humidity | 5～98%RH |
| Run-up time | less than 5 sec. |
| Capability change | Less than 0.16cm3 |
| Damp adjust | 0.20～25 second |
| Malfunction alarming | If occur malfunction, automatism diagnose function will output 3.9
or 21.0mA |
| Configuration protection | To avoid the datas are modified random, can utilize software or
protect switch lock the record data
|
Feature of Smart Pressure Transmitter 4-20mA HART Differential Pressure
Transmitter China
Single crystal resonant silicon sensor technology
Super performance, use to measure pressure, differential pressure
and temperature..
Accuracy: ±0.075%~±0.1%F.S/±0.2%F.S
Stability: ≤0.2%
Standard 4～20mA,RS-485 communication interface
Support upgrade of basic scene control technique
Little temperature effect
Little static effect
Overload can reach 2 times
Application of Smart Pressure Transmitter 4-20mA HART Differential Pressure
Transmitter China
Compatible with 316LSS,noncorrosive liquids.
Shipping and aviation industry.
Hydraulic pressure and pneumatic control system
Apply in Petroleum industry, chemical industry, electric power,
metallurgy, hydrology etc process control.
Detailed picture Smart Pressure Transmitter 4-20mA HART Differential Pressure
Transmitter China
