Features
- 01 Color touch LCD display, Chinese menu operation, no need for standard sample calibration, can be used as a stand-alone or connected to a computer.
- 02 Good stability. Adopt special automatic switching mechanism between sample and reference cell to accurately locate, eliminate errors and realize automatic zeroing.
- 03 Realize real-time automatic adjustment of zero point, simplify operation and ensure the long-term stability of the instrument.
- 04 In line with the requirements of the national standard “HJ637-2018”, infrared spectrophotometry does not require a standard curve, only a set of correction coefficients.
- 05 The cosecant method is used to scan the wave number accurately, so that the wave number positioning accuracy is less than one wave number. The wave number can be freely compensated for positioning.
- 06 High-efficiency optical/electrical system design, pre-integrated narrowband active filter and digital lock-in amplifier, improved signal-to-noise ratio and more stable performance.
working principle
Working principle of infrared photometric oil tester TP303
- Infrared photometric oil tester is The laboratory oil analyzer uses tetrachloroethylene to extract oil substances in water, determines the total extract, and then adsorbs the extract with magnesium silicate. After removing polar substances such as animal and vegetable oils, the petroleum is determined.
- The oil substances in water were extracted with tetrachloroethylene, and the total extract was determined. Then the extract was adsorbed with magnesium silicate. After removing polar substances such as animal and vegetable oils, the petroleum was determined. The content of total extract and petroleum was calculated by the absorbance A2930, A2960 and A3030 at the wave numbers of 2930cm-1 (stretching vibration of CH bond in CH2 group), 2960 cm-1 (stretching vibration of CH bond in CH3 group) and 3030cm-1 (stretching vibration of CH bond in aromatic ring). The content of animal and vegetable oil was calculated as the difference between the total extract and the petroleum content.
Technical indicators
| Water sample detection limit 3SD | ＜0.002mg/L (enrichment) |
| Measuring range | 0.02～800mg/L(extract) |
| Detection limit 3SD | ＜0.2mg/L μ g/L |
| Minimum detection concentration | 0.001mg/L |
| Accuracy error | 0.2～200mg/L±2mg/L (200-800)mg/L±10% |
| Measurement accuracy | Soil 2% |
| Measurement repeatability | <2% |
| Wavenumber scanning range | 2400～3400cm-1 |
| Wave number accuracy | ±1cm-1 |
| Wave number repeatability | 1cm-1 |
| Baseline straightness | ±1% (3300～2600cm-1) |
| Baseline drift | <1%/4h |
| Humidity | <80% |
| temperature | ( 5～35)℃ |
| Communication Interface | RS232 or USB (optional) |
| Dimensions | 540 mm × 246 mm × 16 0 mm |
| power supply | AC220V ± 10 %    50Hz± 10% |
| power | 40w |
| net weight | 14kg |
Ordering Guide
- Accessories Guide
Cuvette/Extraction Device/Perchloroethylene/Standard Material for Infrared Oil Tester
- Precautions
1. The infrared photometric oil tester needs to be preheated for 30 minutes before running the sample test.
2. The water content in the extraction reagent will directly affect the test results. The extraction reagent must be physically dehydrated before use.