product overview

1151/3351 series double flange liquid level transmitterIt is a pressure sensor component used to prevent the medium in the pipeline from directly entering the transmitter. The medium and the transmitter are connected by a capillary tube filled with fluid, which is used to measure and monitor the liquid level, flow rate, and pressure of liquids, gases, or vapors, and then convert it into a 4-20mA DC signal output. After the differential pressure/pressure transmitter is equipped with a remote transmission sealing device, it can become a double flange liquid level transmitter, which still has various characteristics of a differential pressure/pressure transmitter. It can communicate with the HART handheld device for setting and monitoring. This measurement method can avoid direct contact between the measured medium and the isolation diaphragm of the transmitter. It is suitable for the following situations:

• The tested medium has a corrosive effect on the sensitive components of the transmitter;
• It is necessary to isolate the high-temperature measured medium from the transmitter;
• There are suspended solids or high viscosity media in the tested medium;
• The tested medium is easily solidified or crystallized when introduced through a pressure tube;
• Strictly purify the measuring head when replacing the measured medium;
• The measuring head must be kept hygienic and contamination is strictly prohibited;
• The intended use is corrosive or viscous liquids (note: remote transmitters should not be used in vacuum environments).

Product Features

• Super measurement performance, used for pressure, differential pressure, liquid level, and flow measurement
• Numerical accuracy: ± 0.25%
• Simulation accuracy: ± 0.5% ± 0.1% F.S
• Full performance: ± 0.25F S
• Stability: 0.25% for 60 months
• Range ratio: 100:1
• Measurement rate: 0.2S
• Compact (2.4kg) all stainless steel flange, easy to install
• Process connectivity is compatible with other products to achieve optimal measurement
• The sensor with H-alloy sheath achieves excellent cold and hot stability
• Intelligent transmitter using 16 bit computer
• Standard 4-20mA, with digital signal based on HART protocol, remote control
• Support upgrading to fieldbus and field control based technologies

Technical Parameter

• Effective detection range: 0-0.2-20m
• Accuracy: Level 0.5, Level 1, Level 1.5
• Pressure bearing range: negative pressure, normal pressure, high pressure (below 32MPa)
• Working temperature:- 50～240℃
• Environmental temperature:- 20～75℃
• Applicable medium: acid, alkali, salt or any medium that is non corrosive to polytetrafluoroethylene
• Output signal: 4-20mA, two-wire system
• Power supply: Load resistance 0-750 Ω DC24V
• Fixed method: thread installation M20 × 1.5, M27 × 2 flange installation DN15 DN25、DN50、DN80
• On site display: analog display 0-100%, digital display, on-site depth

Selection Chart

Structure diagram