Huazheng HZZD-100 Automatic Potentiometric Titrator Instruction Manual

Huazheng HZZD-100 Automatic Potentiometric Titrator

Product Information

The HZZD-100 Automatic Potentiometric Titrator is manufactured by Huazheng Electric Manufacturing (Baoding) Co., Ltd. It is designed to determine the ion content in a sample liquid through the collection of electrode potential and the calculation of the volume of the standard titration solution at the end point. The titration curve is smoothed and the position of the titration end point is corrected to ensure accurate results. The substance content in the sample is calculated using formula (1) or formula (2).

Performance Characteristics:

• Automatic calculation of concentration and content
• Automatic fitting of working curve using least squares method (LSM)
• Confidence interval given for the working curve
• Automatic sensitivity correction and standard addition method
• Test can be repeated 1 to 20 times
• Automatic calculation of mean, standard deviation (SD), and relative standard deviation (RSD)

Standard Configurations

Product Usage Instructions

1. Connect the main engine, titration unit, computer, and other components using the provided communication wire and power cable.
2. Place the sample liquid to be dropped in a suitable container.
3. Attach the appropriate electrode (802, 902, or 231) to the titration unit.
4. Turn on the power and start the Windows operating system on the computer.
5. Launch the HZZD-100 Automatic Potentiometric Titrator software.
6. Follow the on-screen instructions to set up the titration parameters, such as the number of repetitions and sensitivity correction method.
7. Start the titration process and allow the instrument to automatically calculate the concentration and content of the sample.
8. Once the titration is complete, the test data and final analysis report can be printed out.
9. After usage, properly clean and store the electrodes and other components for future use.

For more detailed usage instructions and troubleshooting, refer to the provided user manual.

Overview

The HZZD-100 automatic potentiometric titrator is composed of three parts: the main engine, the Metrohm titration device and the computer. Different electrodes can be used to perform: acid-base titration, precipitation titration, redox titration, complexometric titration and other titrations, and has dynamic Titration mode. With the support of the application software, the host can realize automatic titration, automatic liquid replenishment, and calculate the content of the detection data. The key components of the instrument are imported devices, the whole machine has a simple structure, beautiful appearance, high degree of automation, accurate analysis results, etc. It is an ideal intelligent instrument necessary for petrochemical laboratories, analysis rooms and scientific research departments.

The potentiometric titration method is to track and record the electrode potential and titration volume during the titration process, find out the potential characteristic hop (ie equivalent point) and the volume of the standard titration solution corresponding to the potential characteristic hop, so as to obtain the dripped sample. The content of ions in the liquid. HZZD-100 automatic potentiometric titrator is based on this method, in strict accordance with GB/T7304, GB/T264, the titration curve is smoothed, and the titration end point position is corrected, which effectively ensures the accuracy of the results.

Basic principles

By collecting the electrode potential, the computer finds out the volume of the standard titration solution at the end point, so as to obtain the ion content in the sample liquid to be dropped. Based on this method,HZZD-100 smoothes the titration curve and corrects the position of the titration end point, which effectively ensures the accuracy of the results. The substance content X [mg/g] in the sample is calculated according to formula (1) or formula (2):

Technical indicators

1. Applicable standard: GB/T9725
2. Functions: acid-base titration, precipitation titration, redox titration, complexometric titration, non-aqueous titration and other titrations, and has a dynamic titration mode.
3. Potential measurement range; (0～±2000)mV, PH: 0～20.00PH
4. Basic error of electronic unit: mV: ±0.03%F•S± 1 character pH: ±0.001pH ± 1 character
5. Input impedance: Ri≥1×1012Ω
6. The volume of the burette: 10ml, the minimum volume is 0.01mL, the minimum sending volume is 0.001mL, and the resolution of the burette is 1/20000.
7. Burette accuracy : ±0.1% (F•S)
8. Burette dripping time: (60±20) seconds (F•S)
9. Titration unit: Metrohm
10. Minimum sending volume (minimum feeding): 0.001mL
11. Sampling volume: 30ml
12. Repeatability error of titration end point: ≤0.2%
13. Analysis time: d epends on the sample size
14. Data communication interface: RS232 or workstation
15. Power: 50w
16. Weight, kg: 6KG
17. Dimensions, mm (L×W×H): 2 60mm×230mm×460mm

Performance Characteristics

N

o.

| ****

Item

| ****

Performance Characteristics

---|---|---

1

| ****

Titration device

| The Metrohm titration unit adopts imported anti-diffusion titration heads. The key components of the titration device are imported, with stable and reliable performance and

extremely low transmission noise.

2

| ****

Electrode

| Stable electrode potential: double high resistance input, the

electrode potential is more stable and reliable.

3

| ****

Analysis system

| Multi-parameter setting and correction makes the analysis of different types of samples simple and fast, with shorter analysis time and more accurate results.

Automatically determine the end point, automatically filter out false end points without indicator, automatically store and print titration results and data, and provide complete

titration data for analysis and research.

4

| ****

Titration function

| Automatic cleaning, automatic liquid replenishment, fixed value liquid addition, mechanical and electrical organic

combination.

Software system

1

| ****

Data management

| It has the function of automatic calculation of concentration and content. The working curve is automatically fitted with the first and second times. The least squares method (LSM) is used for the fitting, and the confidence interval of the working curve is given. It has the function of automatic sensitivity correction; standard addition method. The test can be repeated 1 to 20 times.

Automatic calculation of mean, standard deviation (SD),

relative standard deviation (RSD)

---|---|---

2

| ****

Operating platform

| Windows operating system, the operation adopts

man-machine dialogue mode, which is simple and easy to understand.

3

| Results

printing

| ****

Printable test data and final analysis report

Standard configurations

2

| ****

Titration unit

| ****

PC

| ****

1

| Switzerland

Metrohm

3| Computer| PC| 1|
4| Communication wire| PC| 1|
5| Magnetic stirrer| PC| 2|
6| 802 Electrode| PC| 2|
7| 902 Platinum electrode| PC| 1|
8| 231 Glass electrode| PC| 2|
9| Short-circuit plug| PC| 2|
10| Fuse(2A)| PC| 2|
11| Power cable| PC| 2|
---|---|---|---|---
12| User manual| PC| 1|
13| Warranty card| PC| 1|
14| Certificate| PC| 1|
15| CD Card| PC| 1|

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