Product Overview
The MOEORW-WKQ606B is an integrated high-performance liquid chromatography system composed of a tandem dual-plunger solvent delivery pump and UV-Vis variable wavelength detector, specially configured for quantitative analysis of furfural content in transformer insulating oil. Adopting digital signal processing and high-precision fluid delivery design, the equipment supports isocratic and binary high-pressure gradient elution, fully complying with laboratory testing requirements for power transformer oil aging characteristic substances. The system realizes automatic flow compensation via solvent compression factor calibration and features complete GLP traceability functions, applicable to long-term stable laboratory quantitative detection.
Technical Specifications
Solvent Delivery Pump
|
Parameter |
Specification Unit |
Value |
|
Flow range |
mL/min |
0.001–10.000 |
|
Flow accuracy |
±% |
<±1 (2 μL/min) |
|
Flow precision |
% |
0.8 (0.1–10 mL/min) |
|
Maximum operating pressure |
psi |
6000 |
|
Pressure protection range |
psi |
0–6000, adjustable Pmin/Pmax limit |
|
Program storage capacity |
Methods |
60 independent methods, 20 gradient steps per method |
|
Power supply |
V, Hz |
AC 85–264, 47–63, 80 W |
|
Dimensions |
cm |
42 × 30 × 20 |
|
Net weight |
kg |
8 |
UV-Vis Detector
|
Parameter |
Specification Unit |
Value |
|
Wavelength range |
nm |
190–700 |
|
Wavelength accuracy |
±nm |
±2 |
|
Flow cell volume |
μL |
10 |
|
Light source |
- |
Deuterium lamp (UV) / Tungsten lamp (Vis) switchable |
|
Absorbance detection range |
AU |
0–2 |
|
Baseline noise |
AU |
1.5×10⁻⁵ (MeOH/H₂O 80:20, 1 mL/min, 254 nm) |
|
Baseline drift |
AU/h |
4×10⁻⁴ |
|
Time constant options |
s |
0.1, 0.2, 0.5, 1.0, 2.0, 5.0, 10.0 |
|
Detector power consumption |
W |
150 |
|
Detector dimensions |
mm |
398 × 149 × 267 |
|
Detector net weight |
kg |
10 |
Core Functional Features
Hardware & Design Configuration
1.Tandem dual-plunger pump structure with self-priming one-way valve patent to extend sealing ring service life; interchangeable micro/analytical/semi-prep/prep pump heads.
2.Dual light source optical system with holographic grating and dual photodiode sampling (reference + sample path) to eliminate optical interference.
3.Integrated RS232 communication port and external relay control terminals for automatic linkage with 7725i manual injection valve and third-party workstations.
4.Modular flow path fittings including stainless steel and PEEK connectors, matched multi-volume high-pressure mixers for gradient analysis.
Quantitative Performance Advantages
1.Built-in solvent compression factor database to automatically compensate pressure-induced flow deviation, improving long-term flow stability and repeatability of furfural peak area.
2.Independent high/low pressure alarm protection; system automatically stops and triggers alarm when pressure exceeds preset threshold to protect chromatographic column and pipeline.
3.Digital baseline smoothing via adjustable time constant to reduce noise during transformer oil sample detection.
Operational & Maintenance Value
1.Editable gradient time programs supporting linear and step elution, automatic program linking for complex multi-stage separation methods.
2.Dedicated plunger manual washing pipeline to prevent salt crystal damage when buffer mobile phases are used.
3.Complete GLP recording function to track total equipment runtime and lamp service hours for standardized laboratory management.
Application Fields
1.Power industry laboratory testing: Routine quantitative detection of furfural degradation products in transformer insulating oil to evaluate paper insulation aging degree.
2.Petrochemical insulation material inspection: Furfural trace analysis of various mineral insulating oils.
3.Third-party electrical testing institutions: Batch sample detection for power grid equipment maintenance and fault diagnosis.
4.R&D laboratories of transformer manufacturers: Oil aging simulation and furfural content comparative testing.
Standard Accessories
|
Accessory Name |
Part Number |
Quantity |
|
MOEORW-WKQ606B Main Pump Unit |
WK500-001P-185 |
1 |
|
Solvent Inlet Tubing |
WK500-001P-154 |
1 |
|
10 μm Solvent Filter |
WK500-001P-157 |
1 |
|
FEP Waste Tubing (1/8" × 48") |
WK500-001P-154 |
1 |
|
Matching PEEK & Stainless Fittings, Ferrules |
WK500-001P Series |
1 Set |
|
Hex & Open-end Wrench Kit |
WK500-T Series |
1 Set |
|
Power Cable |
WK500-001P-156 |
1 |
FAQ
Q: Pressure fluctuation during transformer oil testing?
A: Inspect one-way valve contamination, residual air inside pump head, blocked solvent filter or worn plunger sealing ring; clean or replace corresponding components sequentially.
Q: Can halogen-containing mobile phases be used directly on the system?
A: Long-term use is prohibited. If necessary, strictly control halide concentration and flush the entire flow path with deionized water immediately after analysis to prevent stainless pipeline corrosion.
Q: Why does the detector show severe baseline drift during furfural measurement?
A: Insufficient lamp preheating (15–30 min required), unbalanced chromatographic column, residual mobile phase gradient impurities or tiny flow cell bubbles.
Q: What maintenance is mandatory after using buffer mobile phase?
A: Flush plunger assembly with deionized water after each test to eliminate salt crystallization that scratches plunger and sealing components.
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