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HM-NQ Automatic Pour Point and Solidification Point Tester

Product Number：

HM-NQ

Product Difference：

HM-NQ combines automatic air-pressure detection with semiconductor refrigeration to measure pour point and solidification point across -70°C to +51°C. A 7-inch touchscreen, 4.5 ml sample volume, 1°C test interval, and real-time curve display support routine petroleum laboratory testing.

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Product Details

HM-NQ automatic pour point tester front view with touchscreen

HM-NQ tester feature panel showing sealed design and automated testing

HM-NQ automatic pressure method illustration for pour point testing

HM-NQ sealed sample chamber with elbow clamp mechanism

HM-NQ automated air pump cycle during low temperature testing

HM-NQ semiconductor refrigeration unit with cooling protection

HM-NQ touchscreen displaying real-time temperature curve and results

HM-NQ instrument parameters table with temperature and power specifications

HM Instruments team at the scientific instrument manufacturing facility

Laboratory technician operating HM Instruments testing equipment

Product Introduction

The HM-NQ Automatic Pour Point and Solidification Point Tester is a benchtop petroleum analysis instrument for determining the low-temperature flow and solidification behavior of liquid petroleum products. The HM-NQ tester uses an automatic air-pressure method: the sample is preheated to 45°C or the expected value plus 9°C, cooled at a specified rate, and automatically pressure-tested at 1°C intervals from the expected value plus 15°C. This workflow reduces manual intervention while keeping the test sequence visible on the integrated display.

Designed for routine quality control laboratories, refinery support labs, petroleum product inspection teams, and teaching or research facilities, the unit combines semiconductor refrigeration with a high-precision air-pressure sensor and an A-grade PT100 temperature probe. Its 7-inch 1024 × 600 touchscreen switches between Chinese and English, shows the live temperature curve and parameter values, and supports unlimited data storage according to eMMC capacity. Results can be exported or uploaded to a cloud platform, while the thermal printer provides a local record. The system covers -70°C to +51°C with ±1°C repeatability and 0.1°C temperature accuracy.

Applications

Petroleum Product Quality Control — Routine low-temperature testing for liquid petroleum products
Refinery Support Laboratories — Instrumental support for product inspection and process-related laboratory work
Oil and Fuel Inspection — Measurement records for samples where pour point or solidification behavior is required
Third-Party Testing — Repeatable automated measurement for analytical service laboratories
Research and Teaching — Demonstration and study of low-temperature petroleum sample behavior

Functional Performance

Automatic Air-Pressure Measurement — Runs the pressure-based test sequence without manual pre-pumping
Reliable Sealing — Elbow clamps press the seal, while automatic leak detection provides an alarm when leakage is detected
Intelligent Air-Pump Control — Controls cyclic pump operation to support the automated workflow and protect internal components
Semiconductor Refrigeration — Refrigeration-chip protection and real-time water-cooling temperature monitoring support controlled cooling
Abnormal-Condition Alarm — Automatically stops and alarms when the cooling system detects an abnormal situation
Standardized Cooling Profile — Uses staged cooling rates of 3°C–4°C/min and 0.8°C–1.1°C/min according to the sample condition
Fine Temperature Sampling — Performs pressure testing at 1°C intervals with an A-grade PT100 temperature measurement method
Visible Test Progress — Displays the real-time temperature curve and current parameter values throughout the run
Bilingual Touch Operation — 7-inch, 1024 × 600 touchscreen with Chinese and English system-language switching
Connected Records — Supports data export and data upload to a cloud platform, with storage limited by eMMC capacity

Main Parameters

Parameter	Value
Measurement Range	-70°C to +51°C
Test Interval	1°C
Repeatability	±1°C
Temperature Accuracy	0.1°C
Sample Volume	4.5 ml
Detection Air Pressure	310 Pa
Display	7-inch HD touchscreen, 1024 × 600 pixels
Cooling Method	Semiconductor refrigeration

Technical Parameters

Parameter	Specification
Model	HM-NQ
Operating System	Android
System Language	Chinese and English switching
Sample Volume	4.5 ml
Test Interval	1°C
Measurement Range	-70°C to +51°C
Repeatability	±1°C
Temperature Measurement	A-grade PT100
Temperature Accuracy	0.1°C
Detection Air Pressure	310 Pa
Sensor	High-precision air-pressure sensor
Cooling Method	Semiconductor refrigeration
Heating Rate	1°C–3°C/min
Cooling Rate	≥ EPP + 40°C: 3°C–4°C/min; < EPP + 40°C: 0.8°C–1.1°C/min
Display Content	Real-time temperature curve and real-time parameter values
Data Storage	Unlimited, depending on eMMC capacity
Other Functions	Data export and data upload to cloud platform
Printer	Thermal printer
Execution Standards	ASTM D6749; SN/T 3017
Power Supply	AC 220V ±10%, 50Hz ±5%
Power	≤350 W
Ambient Temperature	0°C to 35°C
Ambient Humidity	≤85%
Dimensions	44 cm × 37 cm × 39 cm (L × W × H)
Instrument Weight	19 kg
Instrument Packaging Size	510 × 390 × 375 mm
Constant-Temperature Bath Packaging Size	400 × 400 × 800 mm
Instrument Packaging Weight	22.7 kg
Constant-Temperature Bath Packaging Weight	34.8 kg
Method Description	Automatic air-pressure method; preheat at 45°C or expected value +9°C, then cool at the specified rate. From expected value +15°C, automatic pressure testing is performed every 1°C. Results are stated to be consistent with the tilt method described in GB/T 510, ISO 3016, and ASTM D97.