ND7880 Series Transformer Oil Furfural Analyzer (including high-pressure infusion pump, UV–Vis spectrophotometric detector, and shaker)-Wuhan Nanxing Electric Power Technology Co., Ltd.

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ND7880 Series Transformer Oil Furfural Analyzer (including high-pressure infusion pump, UV–Vis spectrophotometric detector, and shaker)

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Insulating Oil and SF6 Gas Testing Equipment

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ND7880系列变压器油糠醛分析仪(含高压输液泵，紫外分光检测器，振荡器)

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■Features and Benefits

The high-pressure infusion pump is a tandem reciprocating pump with two pistons, offering high flow accuracy.

The floating-type guide plunger rod mounting method, combined with carefully selected high‑quality plunger rods and sealing rings—key components—ensures the infusion pump’s long‑term operational stability and durability under high pressure.

Dual correction functions for mobile-phase compressibility and flow-rate accuracy, enabling adjustments of ± according to differences in the solvent system. 15% Velocity error compensation is performed within the measurement range, ensuring exceptionally high flow accuracy.

Through RS-485 External control via a chromatography workstation enables the convenient implementation of a high-precision binary high-pressure gradient system, while also allowing for flow-rate gradients of the mobile phase, thereby meeting diverse requirements in both production and research.

Real-time pressure monitoring, high-pressure and low-pressure limit alarms ensure the safe operation of the instrument.

The high‑flow flushing and solvent‑replacement function reduces solvent‑exchange time and enhances operational efficiency.

With OLED The module features a user-friendly human-machine interface, offering convenient and flexible operation.

■Performance Metrics

Technical Specifications of Analytical Pumps

Flow range: 0.001mL/min ~ 10.00mL/min

Flow accuracy: ≤± 2%

Traffic Stability: RSD ≤ 2%

Maximum working pressure: 42MPa ( 0.01mL/min ~ 10.000mL/min ) (Default highest 90% )

Pressure pulsation: < 0.1MPa (Traffic 1 mL/min, Pressure 5MPa ~ 10MPa )

Power Supply: AC 110V/220V ，50Hz/60Hz

Power consumption: 100W

External dimensions (Length × Width × Height): 400mm × 180mm × 300mm/10.0kg

■Instrument Features

Advanced optical unit design;

The detector’s optical system incorporates a novel design concept. As is well known, the operating principle of UV detectors is based on the Lambert–Beer law; accordingly, we have focused on optimizing the optical path to ensure that the photodiodes in both the sample and reference paths receive the maximum possible light intensity.

Among them, I1 For the light intensity of the sample path, I0 where I₀ is the reference light intensity, and ε is the molar absorptivity. L It is the optical path length of the flow cell.

Key improvements:

Light source 2 ) Optical path

A newly designed filter 4 ) Uses a holographic grating

A brand-new flow cell;
The overall digital signal processing and control system;

The newly designed integrated voltage system ensures more stable power supply and is suitable for use in explosion-proof environments.

■ Key Technical Specifications

Large-screen LCD display: (240 x 128 dot-matrix LCD)

Temperature control range: room temperature to 120°C

Temperature control method: Digital PID automatic control

Temperature control accuracy: Room temperature to 50°C ±0.2°C;

50℃–100℃ ±0.3℃;

100℃–120℃ ±0.5℃;

Oscillation frequency: 275 ± 3 cycles per minute

Oscillation amplitude: 35 mm

Sample volume: 5 × 100 mL syringes;

Four 250 mL Erlenmeyer flasks;

Working modes: 4 modes

1. Chromatographic degassing by shaking: constant temperature of 50°C;

Shake for 20 minutes; let stand for 10 minutes;

2. Water-soluble acid shaking: constant temperature of 75°C;

Oscillation 5 minutes; stationary 0 minutes;

3. Other physical oscillations: Constant temperature, arbitrarily set between 0 and 120°C;

Oscillation can be set arbitrarily between 0 and 99 minutes;

Set the idle time arbitrarily between 0 and 99 minutes;

4. Manually start oscillation and manually stop oscillation

Operating voltage: AC 220 V ± 20%;

Power supply frequency: 50 Hz ± 5%;

Maximum power consumption: 800 VA;

Ambient temperature: 10°C–40°C;

Ambient humidity: ≤85%;

External dimensions: 500 x 350 x 385;

Weight: 35

Keywords:

ND7880 Series Transformer Oil Furfural Analyzer (including high-pressure infusion pump, UV–Vis spectrophotometric detector, and shaker)

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