Table of Contents

Product Introduction

HF-TC-637 Oil Acidity Tester works based on the neutralization titration principle. Under ambient temperature, the microcomputer automatically completes reagent addition, stirring, titration and endpoint judgment.
It adopts a touch LCD screen for parameter setting, featuring a concise and user-friendly interface. The average analysis cycle for one oil sample is around 2 minutes. It can store and display up to 35 groups of test results, and print multiple test-related parameters.

Technical Specifications

Item	Specification
Linear Range	0.001 ~ 0.900 mgKOH/g
Correlation Coefficient	0.999 ~ 0.9998
Recovery Rate	98 ~ 103%
Minimum Resolution	0.001 mgKOH/g
Repeatability	2 ~ 5% (RSD)
Measurement Accuracy	Acidity 0.001~0.100 mgKOH/g: ±0.003 mgKOH/g Acidity 0.100~0.900 mgKOH/g: ±2~5% of reading
Display	Large touch color LCD screen (full Chinese display)

Application Scenarios — Oil Acidity Tester

Power plants & substations: Preventive testing of in-service transformer oil, turbine oil
Oil quality inspection laboratories: New oil incoming acceptance
Petrochemical & lubricant manufacturers: Product quality control
Commodity inspection & scientific research institutions
Power maintenance companies: Oil aging monitoring before filtration and regeneration

Packing List — Oil Acidity Tester

No.	Description	Qty	Unit	Remarks
1	Oil Acidity Tester Main Unit	1	Set	Model HD-2888
2	Test Beaker & Sample Holder Assembly	1	Set
3	Power Cable	1	Piece	AC220V
4	Titration Accessories	1	Set	Consumable parts
5	Operation Manual (Chinese & English)	1	Copy
6	Calibration Certificate	1	Copy
7	Shockproof Transport Case	1	Piece

FAQ for Oil Acidity Tester

Q1: What is the Oil Acidity Tester used for?

A: It tests the acid value of transformer oil, turbine oil and other insulating oil. It monitors oil oxidation aging and provides data basis for oil maintenance in power preventive tests.

Q2: What testing principle does this instrument adopt?

A: It adopts neutralization titration principle. Under ambient temperature, it automatically completes reagent adding, stirring, titration and endpoint judgment.

Q3: What is the measuring range?

A: Linear range: 0.001 ~ 0.900 mgKOH/g, minimum resolution: 0.001 mgKOH/g.

Q4: How long is the analysis cycle for one oil sample?

A: The average analysis cycle for each oil sample is about 2 minutes, with high testing efficiency.

Q5: How many groups of test data can the instrument store?

A: It can display and store up to 35 groups of measurement results.

Q6: Can the instrument print test results?

A: Yes. It supports printing multiple parameters related to the test after measurement.

Q7: What is the repeatability of the tester?

A: Repeatability: 2~5% (RSD).

Q8: What display configuration does the machine have?

A: Equipped with large touch color LCD screen with full Chinese display, simple and intuitive operation.

Q9: What does high acid value of insulating oil indicate?

A: High acid value means the oil is oxidized and aged. Acid substances may corrode metal components and accelerate insulation paper aging, endangering safe operation of oil-filled electrical equipment.

Q10: What maintenance should be carried out after testing?

A: Clean the titration cup and pipelines in time to avoid residual sample contamination; keep the instrument clean and dry.

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HF-TC-637 Oil Acidity Tester