Pressure type liquid level transmitterMain technical parameters
Range: 0~30m
Measurement medium: various corrosive liquids such as water, heavy and light oil, crude oil, acid and alkali
Accuracy: 0.25% F · S; 0.5% F · S (usually 0.5% FS)
H - height of liquid level to be measured, unit: m
Po - pressure on the liquid surface, in kPa
If the back chamber of the sensor is connected to the upper part of the liquid level, Po is zero, so H is approximately equal to 0.102P/p. The transmitter converts the sensed pressure signal into an electrical signal, which is proportional to the height of the liquid level.
Output: 4~20mADC
Temperature: ambient temperature 0~60 ℃, medium temperature 0~250 ℃
Power supply: 24VDC
Dustproof and moisture-proof: all-weather
Explosion proof level: EXia II CT5
Indicator header: 100% pointer header or 31/2-digit LCD display (user must specify separately when ordering)
Pressure type liquid level transmitterWorking principle of
When the sensor of the transmitter is placed at a certain position in the liquid, the pressure received by the sensor through the air duct is: P=9.807pH+Po
Among them, P represents the pressure sensed by the sensor, measured in kPa
P - Liquid level density, unit: g/cm3
Attention: The container of the tested liquid must be open to the atmosphere and cannot be sealed, otherwise the measurement results will be meaningless.
selection method
enterprise standard | Divider | model | DesIgn Serial Number | range | accuracy | Circuit characteristics | structural style | Extreme exploration form | Process connection | On site instructions | describe |
ZP | enterprise standard | ||||||||||
- | undefined | ||||||||||
BUS | Liquid level transmitter | ||||||||||
740 | Pressure guiding | ||||||||||
A | 0.2 ≤ Range ≤ 20 (m) | ||||||||||
B | 1.0 ≤ Range ≤ 10 (m) Underground water tank, etc | ||||||||||
1 | Level 0.2 | ||||||||||
2 | Level 0.5 | ||||||||||
3 | Level 1.0 | ||||||||||
1 | Non isolated two-wire system | ||||||||||
2 | Non isolated three wire system | ||||||||||
3 | Input and output isolation three wire system | ||||||||||
4 | Input, output, and power three terminal isolated four wire system | ||||||||||
F | Split type (selected when the temperature at the source of the probe is greater than 65 ℃) | ||||||||||
L | Connected type (selected when the temperature of the probe source is less than 65 ℃) | ||||||||||
R | Soft wire probe | ||||||||||
B | Rod style probe, with a maximum length of 2 meters | ||||||||||
1 | M20 × 1.5 thread (flexible wire probe) | ||||||||||
2 | M27 × 2 thread (rod probe) | ||||||||||
3 | Flange (flexible wire rod type) | ||||||||||
4 | Pressure measuring cylinder (flexible wire rod type) | ||||||||||
M1 | 0-100% pointer indication | ||||||||||
M2 | 31/2LED digital display | ||||||||||
M3 | 31/2LCD digital display | ||||||||||
ZP | - | BUS | 740 | A | 2 | 4 | L | R | 2 | M3 | Complete selection |