
A hydro-static pressure transmitter for storage tank level monitoring use to measure level of 36% hydrochloric acid over a range of 0 to 1 mH2O g by immersion in the tank, and sending the corresponding 4-20mA signal through the submersible electrical connection.
The LMK 809 submersible hydrostatic pressure transmitter is specifically designed for challenging applications like monitoring the level of 36% hydrochloric acid in storage tanks. Its robust construction and chemical compatibility ensure reliable performance and a long service life in this harsh environment.
The transmitter’s PVDF body casing and FKM O-ring seals provide exceptional resistance to the corrosive nature of hydrochloric acid, preventing leaks and maintaining the integrity of the sensor. The ceramic sensing element itself is also highly resistant to hydrochloric acid, ensuring accurate and stable measurements over time. This resistance to corrosion is critical not only for accurate measurement, but also for preventing contamination of the stored acid.
With a measurement range of 0 to 1 mH2O, this transmitter is suitable for a variety of hydrochloric acid storage tank sizes and configurations. The 4-20mA current output provides a widely compatible signal for integration with most industrial control systems, allowing for remote monitoring and automated control of tank levels.
The submersible design with IP68 protection allows the LMK 809 to be fully immersed in the hydrochloric acid, providing accurate in-situ measurements without the need for complex external mounting arrangements. The FEP coated cable further enhances the corrosion resistance of the installation, ensuring long-term reliability and safety. This submersible design is ideal for applications where space around the tank is limited, or where the transmitter needs to be protected from the surrounding environment.
The LMK 809 is ideally suited for use in a wide range of industrial applications involving hydrochloric acid storage, including:
- Chemical processing plants, where accurate measurement of hydrochloric acid levels is essential for process control and safety
- Metal refining and surface treatment facilities, where hydrochloric acid is used for pickling and etching processes
- Waste water treatment plants, where hydrochloric acid may be used for pH adjustment
- Pharmaceutical manufacturing, where hydrochloric acid is used in various chemical synthesis processes

LMK809 Submersible Acid Hydro-Static Pressure Transmitter
- SKU ID: s1-lmk809-91-16885
- Pressure Range: 1
- Units: mH2O
- Reference Type: Gauge / Vented (atm to +P)
- Output Signal: 4-20mA, 2 wire
- Accuracy: 0.35% FS
- Installation Type: Submersible probe with removable nose cone
- Housing Material: PVDF
- Diaphragm Material: Ceramic Al2O3 99.9%
- Media Exposed Seals: FKM
- Cable Type: FEP (70degC max)
- Cable Length: 5
- Cable Length Units: Metres (m)