Product Overview
The Flanged Liquid Level Transmitter Series HLP is an advanced sensor-based level measurement device. It is designed to provide accurate and stable liquid level measurement in complex process conditions such as high temperature, high viscosity, crystallization-prone media, strong corrosion, or liquids containing suspended solids. It enables continuous monitoring of liquid levels in sealed tanks or process pipelines.The core application fields of the HLP flanged level transmitter include oil & gas, chemical, and natural gas industries. It is also widely used in power generation, water treatment and environmental protection, pharmaceuticals and food & beverage, paper industry, metallurgy, and mining sectors.
Product Features & Advantages
- High accuracy: Measurement accuracy up to ±0.1% FS, meeting high-precision industrial level measurement requirements in most applications.
- Integrated dynamic compensation: Built-in compensation function corrects in real time the effects of temperature variation and static pressure fluctuations, ensuring stable and reliable measurement data even under changing operating conditions.
- Strong electromagnetic interference resistance: Equipped with RF and EMI filtering technology, and tested under strict EMC standards, ensuring stable operation in complex industrial electromagnetic environments.
- Robust protection: Housing protection rating up to IP68, effectively preventing dust ingress and water immersion, suitable for humid and dusty industrial environments.
- Flexible material options:
Available in various flange types such as flat flange, insertion flange, and dual flange. Diaphragm materials include 316L, Hastelloy C-276, Tantalum, etc. Filling fluids can be customized for high-temperature or hygienic food-grade applications. - System integration capability:
Supports 4–20mA analog output with HART protocol overlay for bidirectional analog and digital communication. Also compatible with mainstream protocols such as Modbus, enabling seamless integration into industrial automation systems. - Easy installation and calibration:
Standard flange connection for simple installation. Multiple electrical interface options available. Supports on-site zero and span adjustment via magnetic rod or HART handheld device.
Technical Specifications
| Item | Detailed Specification |
| Measuring Range | 0–40 kPa / 0–250 kPa / 0–1 MPa |
| Accuracy | ±0.1% FS / ±0.2% FS |
| Process Temperature | -40°C ~ 200°C |
| Ambient Temperature | -40°C ~ 85°C |
| Relative Humidity | 0% ~ 95% (non-condensing) |
| Protection Rating | Standard: IP67, Optional: IP68 |
| Output Signal | 4–20mA DC (with HART protocol overlay); digital Modbus |
| Communication Protocols | HART, Modbus |
| Wireless Communication | LoRaWAN, NB-IoT, 4G |
| Diaphragm Material | 316L stainless steel, Hastelloy, Monel, Tantalum, PTFE (special customization available) |
| Housing Material | Aluminum alloy (surface anti-corrosion treatment) or stainless steel |
| Power Supply | DC 24V |
| Power Consumption | ≤ 1.5 W (normal operation, DC 24V supply) |
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