- Flow Switches
- Tuning Fork Level Switch
- Rotary Paddle Level Switch
- Hydrostatic Level Transmitter
- Hydrostatic Level Indicator Transmitter
- Closed-Tank Level Transmitter
- Differential Pressure Indicator Transmitter
- Mini Differential Pressure Transmitter
- Pressure Indicator Transmitter
- Mini Pressure Transmitter
- Temperature Indicator Transmitter
- Head-Mounted Temperature Transmitter
- Temperature Transmitter with Process Indicator
Closed-Tank Level Transmitter
Model No: KCPT-LT-TX
Closed-Tank Level Transmitters are designed for continuous liquid-level measurement in pressurised and sealed vessels using differential pressure measurement.
The transmitter measures the pressure difference between the bottom and top of the vessel, automatically compensating for tank pressure to provide an accurate level signal. Depending on the installation, the transmitter can be connected through direct impulse lines or remote diaphragm seals with capillaries.
Available with 4–20 mA output, HART or RS485 Modbus RTU communication, local LCD indication, flameproof enclosure, and SS316L, Hastelloy C, Tantalum or PTFE-coated diaphragm options, the transmitter is suitable for demanding process applications involving pressure, temperature or corrosive media.
Key Specifications
- Differential-pressure level measurement for closed and pressurised tanks
- Tank-pressure compensation using high- and low-pressure connections
- Measuring range up to 100 m
- 4–20 mA output with HART / RS485 Modbus RTU options
- LCD display for local indication
- Flameproof IP67 enclosure
- SS316 wetted parts with optional Hastelloy
Technical Specifications
- Measured Variable
- Liquid level in closed / pressurised tanks
- Measuring Principle
- Differential pressure
- Measuring Range
- Up to 100 m
- Accuracy
- ±0.5% of FSD or better
- Process Connection
- Threaded / Flanged / Remote Seal, depending on configuration
- Wetted Parts
- SS316 / Hastelloy C (optional)
- Enclosure
- Flameproof, IP67
- Output
- 4–20 mA
- Communication
- HART / RS485 Modbus RTU
- Power Supply
- 24 VDC
- Display
- Local LCD
Find Applications
- Closed and pressurised tank level measurement
- Chemical and process vessel level monitoring
- Boiler and condensate tank level measurement
- Oil, fuel and solvent storage tank monitoring
- High-pressure liquid level measurement
- Applications requiring remote seals and capillaries
- Processes with corrosive or high-temperature media
Technical documents
Types of Closed-Tank Level Transmitter We Manufacture
Select Explore specifications to view that configuration's data in a popup.

Closed-Tank Level Transmitter with Remote Seals
Remote diaphragm seals and capillaries connect the transmitter to the high and low tapping points.
- Configuration
- DP transmitter with diaphragm seals and capillaries; SS316L / Hastelloy C / Tantalum / PTFE-coated diaphragm options
- Key Feature
- Isolates the transmitter from difficult process media and temperature
- Suitable For
- Closed vessels with hot, corrosive, viscous or crystallising media

Closed-Tank Level Transmitter — Compact DP Configuration
Compact differential pressure configuration for smaller closed tanks and skid-mounted vessels.
- Configuration
- Compact DP transmitter with direct impulse lines
- Key Feature
- Simple installation without remote capillaries
- Suitable For
- Small pressurised tanks and skid-mounted vessels