Dropping Point Tester (Air bath) LDPT-T2011

Introduction

It is designed and made as per the “Test Methods for Dropping Point of Lubricating Grease and Solid Hydrocarbon” D566.

This petroleum testing is designed to meet the rigorous requirements of modern laboratory operations, ensuring high precision, reliability, and ease of use for various experimental applications.

Applications

It is used to determine dropping point of lubricating grease and hydrocarbon over 100 ℃

Specifications

Ambient temperature	≤ 35 ℃
Relative humidity	≤ 85 %
Heating power of electric furnace	250 W × 2
Total power consumption	≤ 700 W
Power supply	AC 220 V ± 10 %, 50 Hz

Features

Desktop structure 

Controlled by bidirectional silicon controlled rectifier 

Double sample working style

It can do parallel test for two samples at a time

FAQs

1. What are the advantages of using silicon-controlled rectifier () technology in the Dropping Point Tester (Air bath) ?

It Dropping Point Tester (Air bath) uses -based control to manage temperature precisely by adjusting power to the heating elements in real time. This helps avoid sudden temperature spikes and keeps the heating process stable. The system also lasts longer and uses less energy compared to older relay-based controllers. design ensures better temperature consistency and reliable results in every test.

2. What type of thermometer is used with the Dropping Point Tester (Air bath) and how is it positioned?

The Dropping Point Tester (Air bath) typically uses glass mercury or alcohol thermometers calibrated in °C, designed specifically for dropping point testing. The thermometer is inserted vertically into a support stand so that its bulb is aligned closely with the sample cup without touching it. Proper alignment ensures accurate temperature tracking of the surrounding air inside the furnace. Users must verify that the thermometer scale matches the required measurement range (usually up to 300?°C) and is free of any air bubbles or breaks in the mercury/alcohol column.

3. What are the advantages of testing with an air bath in the Dropping Point Tester (Air bath) instead of an oil bath?

It Dropping Point Tester (Air bath) uses an air bath, which makes testing cleaner and easier to maintain since there is no oil involved. There is no risk of oil spills or smoke, and the equipment stays cleaner over time. The air bath also cools down faster after use and avoids problems like oil breakdown or sticky buildup. It is a good choice for labs that want simple operation without dealing with heated oils.

4. What should I do if the drop point result varies between repeated tests on the Dropping Point Tester (Air bath) ?

Dropping Point Tester (Air bath) gives best results when the grease is packed evenly in the cup and the thermometer is placed properly. Make sure the heating is steady in both sample zones, and keep the room free from strong air movements or vibrations. Let the tester cool down fully between runs to keep conditions the same each time. If differences continue, check the heating parts or recheck the thermometer position.

5. What maintenance precautions should be taken for long-term durability of the Dropping Point Tester (Air bath) ?

The Dropping Point Tester (Air bath) should be kept clean by removing any leftover grease or burnt material from the furnace and sample areas. Check the electrical parts like heating wires and units now and then to look for signs of damage or heat stress. Don’t use metal tools that could scratch or harm the inside parts. It should be used only within the specified ambient temperature and humidity range to prevent damage and maintain long-term performance.