PMD3051 4 20ma Hart Capillary Digital Differential Pressure Transmitter Measure Gas/Water RS485 Output in Industry

Object of use

liquid, gas, or steam

Measurement range

see selection specifification table

Output signal

4 ~ 20mA dc. Output, superimposed HART protocol digital signal (two-wire)

Power supply

external power supply 24V dc. , power range 12V ~ 45V

Dangerous place installation

flameproof ExdIIBT5Gb; Intrinsic safety ExiallCT4/T5/T6Ga;

Migration characteristics

when the minimum range (range compression ratio is 40: 1), the maximum positive
migration zero is 39 ≤ 40 times the upper limit of the range.
The zero point of large negative migration can be the lower limit of range, and the
absolute pressure transmitter has no negative migration. (no matter what the output form is, after positive and negative migration, the upper and lower limits of the range shall not exceed the limit of the range.)

Temperature range

the electronic circuit board works at-40 ~ 85 °C, the sensitive element works at-40 ~ 304 °C, and the storage temperature works at-40 ~ 104 °C. -40 ≤ 85 °C; with digital display at-25 ~ 75 °C (operation);-40 ~ 85 °C (no damage)

Relative humidity

0 ~ 95%

Overpressure limit

range 3 to 8 subjected to 0 (absolute pressure) ~ 13.78MPa pressure transmitter is not
damaged; normal working pressure in 3. 43kPa (absolute pressure) to the upper limit of
the range.

Volume variation

less than 0.16cm3

Damping

the time constant is adjustable in the range of 0.2 ~ 32 s

Installation position
inflfluence

the maximum zero error not larger than 0.10kPa can be produced, and this error can be
eliminated by correction, which has no effect on the measurement range. There is no
effect on the rotation of the measuring body relative to the flflange.

Startup time

3s, no need to preheat.

Accuracy

+ 0.1%, + 0.075%

Stability

+ 0.2% ≤ 12 months of the maximum range

Temperature effect

+ 0.2% ≤ 20 °C with zero and range temperature error of maximum range

Static pressure effect

after the static pressure 14MPa is stable, the zero error is + 0.25% of the maximum
range range, and the zero point of the transmitter can be eliminated according to the
actual static pressure adjuster before installation. After the HP static pressure 31.2MPa is stable, the zero error is less than + 0.5% of the maximum range, and the zero point of the transmitter can be eliminated according to the actual static pressure adjustment before installation.

Power effect

less than 0.005% / V of the output range.

Vibration effect

on any axis, the frequency is 200Hz and the error is + 0.05% / g of the maximum range

Load effect

as long as the voltage of the input transmitter is higher than 12V, there is no load effect in the load working area.