I. Overview
ZDJ-4B automatic potentiometric titrator (hereinafter referred to as the instrument) is a laboratory analytical instrument with high analytical precision. Chemical analysis of ingredients.
ZDJ-4B automatic potentiometric titrator is a new product launched on the basis of ZDJ-4A. The instrument mainly has the following characteristics:
The instrument adopts a new microprocessor technology, which can display relevant test methods, titration curves and measurement results. The instrument has a good operating interface and is easy to use.
The instrument has a variety of titration modes, including pre-titration, preset end-point titration, blank titration or manual titration. After the titration, the user can directly generate a special titration mode, which expands the scope of the instrument. The instrument selects different electrodes to perform different titrations, including acid-base titration, redox titration, precipitation titration, Lo-∑ titration, non-aqueous titration and other titrations and pH measurements.
The instrument adopts the integrated design of valve burette, which is convenient for users to replace, and reduces the problem of mutual interference between different solutions in different titrations.
The instrument has improved the transmission system, greatly reducing the size of the instrument and effectively reducing the noise of the instrument. The stirring system adopts PWM modulation technology and software speed regulation.
The titration system is made of perchloric acid-resistant materials and can perform non-aqueous titration.
The instrument has a power-off protection function. After the instrument is turned off after use or in the case of abnormal power-off, the measurement data and set parameters stored in the instrument will not be lost.
The instrument can be connected to a PC through a USB interface and controlled by a specially developed titration software. The titration curve and its first and second derivatives can be displayed instantly on the computer. It is convenient to edit and modify the titration mode, and can carry out the statistics of the results.
The instrument supports GLP specification and can store 200 sets of titration results.
The instrument supports storing a set of titration curves.
The instrument supports firmware upgrades, allowing functional expansion and individual requirements.
II.Specifications Measuring range
2.1. pH: (0.00～14.00)pH；
mV: (-1800.0～1800.0)mV；
Temp：(-5.0～105.0)℃。
2.2．Resolution:
pH: 0.01pH； mV: 0.1mV； Temp：0.1℃。
2.3. Relative accuracy:
pH: ±0.01pH±1 bit； mV: ±0.03% Full Scale； Temp：±0.3℃；
2.4. Burette volume accuracy 10mlburette：±0.025ml； 20mlburette：±0.035ml。
2.5. Burette filling solution speed：55±10s(When the burette is in full scale)
2.6. Reproducibility of titration analysis：0.2％。
2.7. Relative reproducibility：≤0.2mV。
2.8. Relative stability：±0.3 mV±1 bit/3h。2.9.Sensitivity of controlling titration：±2mV。
2.10. Normal working conditions:
Environments temperature：（5.0～35.0）℃； Relative humidity：≤80%；
Power supply：(220±22)V，Frequency(50±1)Hz； There should be no disturbance of electromagnetic field
2.11. Dimension(mm)：340×400×400(length×width×height)。
2.12. Weight(kg)：about 10