BPHT3351 Differential Pressure TransmitterIntroduction of capacitive differential pressure transmitter :
BPHT3351 Capacitive differential pressure transmitter sensor , the pressure or differential pressure will make the sensor
capacitance value change, the generated analog signal after AD
conversion, into a digital signal sent to the microprocessor, after
the microprocessor calculation and processing output a digital
signal, after DA conversion to the current control circuit,
converted into 4 ~ 20mA analog current signal output.
Product Features of capacitive differential pressure transmitter:
1. The transmitter adopts stainless steel structure design, compact
structure and easy installation.
2. After strict temperature compensation and aging screening, to
ensure stable and reliable performance.
3. Electrical interface can be selected as plug-in or direct wiring
option.
Applications of capacitive differential pressure transmitter:
1. Suitable for measuring differential pressure of various gases or
liquids in pipelines of industries such as petroleum, chemical,
power, and hydrology.
2. Applied in industrial on-site processes such as petroleum,
chemica,metallurgy, power generation, and hydrology.
3. Pressure measurement for pipelines and furnace chambers.
| 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 12.5-45VDC |
| 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 |
