Aplisens APR-2000YALW Smart Level Probe Pressure TransmitterIndonesia Industrial Parts

Overview

APLISENS S.A. is one of the leading manufacturers of high-quality process instrumentation. The company was founded in 1992. The main factory and headquarters are located in Warsaw. From the beginning, it has concentrated on electronic pressure and differential pressure measurement technology. The basic rules have always been: high quality, high flexibility and competent support to customers.

Today Aplisens, trough its sales network in many countries, offers a wide range of products:

differential pressure transmitters
hydrostatic level probes
level transmitters
valves
digital indicators
power supplies, separators
gauges The constant development, high-tech production and ISO 9001 management system are the best warranty of quality of our products.

Principles of operation Pressure Level Probe

Aplisens APR-2000YALW Smart Level Probe differential pressure transmitter, enabling compensation for static pressure in the tank. The value processed is just the hydrostatic pressure of the medium measured at the level of the diaphragm of the lower seal. This pressure is the sum of the hydrostatic pressures of the liquid and vapour phases of the medium.

In most practical measurement situations the density of the vapor phase is negligibly small, and therefore the measured hydrostatic pressure relates only to the height of the liquid phase column and can be taken as representing the level of the surface of the liquid phase. For media where the density of the vapour phase is significant (e.g. propane) the level found by the method described can be treated as the theoretical level of the liquid level obtained by adding the actual liquid phase to the condensed vapour phase.

Application and Construction Pressure Level Transmitter

The APR-2000AL Pressure Level transmitter applies to the measurement of differential pressure of gases, vapors, and liquids. The active element is a piezo-resistant silicon sensor separated from the medium by separating diaphragms and a specially selected type of manometric fluid. The special design of the active sensing element ensures that it can withstand pressure surges and overloads of up to 2 0 3 0 bar.

The casing is made of aluminum alloy cast , degree of protection IP6 . The design of the casing enables the use of a local display, rotation of the display, rotation of the casing by 0–3 ° relative to the sensor, and a choice of cable direction.

Pressure Level Transmitter Feature

4…20 mA output signal + HART 5 / HART 7 protocol (special version: 0…20 mA or 0…5 mA output signal + HART 5 protocol)
Display with backlight
Safety version SIL2/SIL3
Intrinsic safety certificate ATEX, IECEx, FM (USA, Canada)
Explosion-proof certificate ATEX, IECEx, FM (USA, Canada)
Programmable zero range, shift, characteristic and damping ratio with local panel keys
Static pressure limit up to 600bar
Accuracy 0,075% (0,05%, 0,04% on request)
Marine certificate – DNV, BV
Gold plated diaphragms
Wetted parts material 316L/Hastelloy C276

Configuration example

To convert a rise in the level of liquid with density 0.87 from 0 to 3200 mm to a current change from 4 to 20 mA.

Install the transmitter in working position, place the seal at the appropriate height (tank empty).
Calculate the width of the measurement range in mm H O (4°C): 3200 mm × 0.87 g/cm = 2784 mm H O. 2 2
Using the communicator, set the transmitter to use the units mm H O at 4°C. 2
To determine the start of the measurement range, read off via the communicator the hydrostatic pressure produced by the manometric fluid in the capillary (e.g. –4250 mm H O). 2
To determine the end-point of the measurement range, add the value –4250 mm H O and the width of the measurement range 2 –4250 mm H O + 2784 mm H O = –1466 mm H O. 2 2 2
Using the communicator enter the calculated start (–4250 mm H O) and end-point (–1466 mm H O) of the measurement range 2 2 and send as a block to the transmitter. After receiving these parameters the transmitter will perform measurements as required.

Aplisens APR-2000YALW Smart Pressure Level Technical Data

No.	Nominal measuring range (FSO)	Accuracy for nominal measuring range	Minimum set range	Accuracy for minimum range
1	0…6000 mm H2O	±0,16%	600 mm H2O	±0,5%
2	0…1600 mm H2O	±0,2%	160 mm H2O	±0,6%

Aplisens APR-2000YALW Smart Level Probe Range of medium densities:

up to 1,1 g/cm (standard version)
over 1,1 g/cm: special version by arrangement with APLISENS
Error due to ambient temperature changes: < ±0,4% of basic range for temperatures of -25…+80°C
Error due to supply voltage changes: < ±0,002% of basic range / V

Zero shift error for static pressure: