Product categories

PPM-TQ Float Level Sensor

Measuring Range: 150 ~ 1,500 mm, custom lengths available
Accuracy: 3 mm / 6 mm / 24 mm
Output Signa: Resistance (Ω), 4~20 mA
Mechanical Connection: G1/4, 3/4NPT, G3/8; custom threads available

Introduction

Real-time monitoring of coolant volume inside the tank; triggers low-liquid-level leakage alarm to prevent pump dry running and equipment overheating; sends high-liquid-level alarm to avoid overflow during fluid replenishment. It supports switch signal or 4-20mA/RS485 signal output, compatible with CDU control cabinets and computer room DCIM systems.

Working Principle of PPM-TQ Float Level Sensor

The float rises and falls with the liquid level. A built-in magnet actuates the reed switch inside the guide rod to output switch signals or continuous liquid level signals. It connects to CDU control cabinets and computer room DCIM systems, realizing low-liquid-level leakage warning and high-liquid-level overflow protection, eliminating risks of pump dry running and server overheating.

Product Features

Real-time online monitoring

Immune to electromagnetic interference, unaffected by the dielectric constant of coolant

Low cost, cost-effective and high performance

Easy installation

IP65 waterproof rating

Supports multi-point alarm or continuous liquid level transmission

Technical Parameters

Item	Parameter
Measured Medium	Deionized water, ethylene glycol aqueous solution, propylene glycol aqueous solution, oil-based coolant, fluorinated liquid
Measuring Range	150 ~ 1,500 mm, custom lengths available
Accuracy	3 mm / 6 mm / 24 mm
Power Supply	DC 12～36 V
Output Signal	Resistance (Ω), 4~20 mA
Media Temperature	-30 ~ +120 ℃
Ambient Temperature	-30 ℃ ~ +80 ℃
Installation Angle	Vertical mounting ±30°
Mechanical Connection	G1/4, 3/4NPT, G3/8; custom threads available
Electrical Connection	Direct cable outlet or custom connectors
Wetted Material	316L Stainless Steel
Protection Class	IP65