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Modbus Protocol Fluid Level Meter Of High Pressure Containers Capacitive with ranging resolution 0.1mm
Product Specifications
Attribute
Value
Measuring range
0.1~3m
Pressure range
-0.1MPa~32MPa
Capacitance detection range
10PF~500PF
Supply voltage
5~36 V DC
Output signal
4-20mA/RS485
Measurement accuracy
Level 0.1、0.2 、0.5 、1
Environment temperature
-40~85℃
Ranging resolution
0.1mm
Long stability
≤0.1%FS/ year
Protection class
IP67
Product Overview
The capacitive intelligent liquid level sensor is a reliable transmitter for liquid, oil, solid, and interface measurement. With no moving parts, it offers enhanced reliability and remains unaffected by water vapor, dust, or condensation. This sensor provides stable long-term operation with high sensitivity, excellent linearity, and resistance to high temperatures and pressures.
Key Features
Modbus protocol for easy integration
Simple structure without movable parts ensures high reliability and minimal maintenance
Multiple signal output options for flexible system configuration
Suitable for high temperature and high pressure container level measurement
Ideal for measuring strong corrosive liquids like acids and alkalis
Comprehensive overcurrent, overvoltage, and power supply polarity protection
Optional wireless remote transmission capability
Compatible with any measurement medium
Technical Specifications
Detection range: 0.1~3m
Capacitance measurement range: 10PF~500PF
Accuracy: 0.1 class, 0.2 class, 0.5 class, 1 class
Pressure range: -0.1MPa~32MPa
Probe temperature resistance: -50~250℃
Ambient temperature: -40~85℃
Storage temperature: -55℃~+125℃
Output signal: 4~20mA, 485 communication
Wireless communication distance: less than 200 meters
Power supply voltage: 5~36V DC
Material: 316 stainless steel, 1Gr18Ni19Ti or PTFE
Long-term stability: ≤0.1%FS/year
Temperature drift: ≤0.01%FS/℃ (0~70℃ range)
Explosion-proof grade: ExibIICT6
Protection level: IP67
Product Structure
The capacitive liquid level sensor consists of two main components: the sensor part and the transmitter part.
A: Sensor that probes into the container or measuring tube
B & C: Gas phase and liquid phase connection flanges for equipment connection
D: Measuring cylinder that forms capacitance with the sensor electrode
E: Sewage flange for regular discharge of contaminants
F: Transmitter that converts capacitance to standard current signal
Important: The sealing part between transmitter and measuring tube must not be disassembled without manufacturer consent to prevent accidents.
Display
Wiring Configuration
The KSLV606 display model supports two wiring methods: RS485 and 4-20mA.
RS485 Wiring
4-20mA Wiring
Common Wiring Methods
Installation Note: Always open the gas phase valve first, then the liquid phase valve to prevent measurement errors from liquid level fluctuations.
Regular maintenance includes checking cable connections and periodic sewage discharge (1-2 times weekly for dirty media, 1-2 times monthly for cleaner media).
Installation Guide
Gas Phase and Liquid Phase Installation
Installation is straightforward: connect the gas-liquid phase flanges on the level meter to the equipment flanges with a gasket in between, secured with bolts.
Boiler Type Capacitive Level Meter Installation
This specialized installation features the transmitter below the sensor with a heat-dissipating section, designed for high temperature environments.
Calibration Procedure
Prepare a transparent water pipe with scale markings, precision ammeter, rubber stoppers, and test medium (water can substitute).
Connect the pipe to the liquid phase port, block sewage outlet, keep gas phase open, and connect ammeter as shown.
Add medium to several height points (0%, 25%, 50%, 75%, 100%) and compare ammeter readings to expected 4-20mA values.
Trouble Guide
Common Issues and Solutions
Zero Display: Check 24V power supply, transmitter for shorts or quality issues
Current Below 4mA: Verify actual liquid level, transmitter adjustment, or potential quality issues
Current Above 25mA: Check for transmitter circuit shorts or high adjustment values
Erratic Display: Examine actual liquid level fluctuations, line contacts, or transmitter problems
Slow Response: Clean sensor poles from impurities or check for partial gas phase pipe blockage
Important Precautions
Verify all product documentation before use
Ensure proper interface matching during installation
Follow wiring instructions precisely
Handle with care - no disassembly, collisions, or drops
Stop use and investigate any abnormalities
Store in original packaging in cool, dry conditions
Use safety barrier/isolator for 485 communication systems
Product Selection Table
KSLV Selection Table for Intelligent Capacitive Fluid Level Gauge
Product type
605
No display model
606
No display model
Output Signal
4-20mA
4~20mA signal output, LED display
RS485
RS485 output
Code
L500
500mm
L800
800mm
L1000
1000mm
Measuring media
Identify the type of medium being measured (e.g., water, diesel)
Example Configuration
KSLV
605
4-20mA
L800
Water
NA
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2008
Total Annual:
8000000-10000000
Employee Number:
100~150
Ecer Certification:
Verified Supplier
Xi'an Kacise Optronics Co.,Ltd. is a professional manufacturer of measuring instruments , located in China xi’an City. Since 2008, Xi'an Kacise focused on the development and production of pressure, level and flow measuring instruments .
We have been specializing... Xi'an Kacise Optronics Co.,Ltd. is a professional manufacturer of measuring instruments , located in China xi’an City. Since 2008, Xi'an Kacise focused on the development and production of pressure, level and flow measuring instruments .
We have been specializing...