Solid waste calorific value equipment ZDHW-300A microcomputer fully automatic calorimeter

Product Overview:

Solid waste calorific value equipment ZDHW-300A microcomputer fully automatic calorimeterSuitable for measuring the calorific value of combustible substances such as coal, coke, and petroleum in industries such as electricity, coal, metallurgy, petrochemicals, environmental protection, cement, papermaking, geology, and scientific research institutions. It complies with GB/T213-2008 "Requirements for the determination of calorific value of coal" and GB/T 14402-2007 "Determination of combustion performance and calorific value of building materials and products".

Performance characteristics

1. The appearance is beautiful and generous, the materials are carefully selected, the production is excellent, the structure is reasonable, and the failure rate is low.

2. The entire process is easy to operate, and the oxygen bomb will automatically rise and fall after being attached to the calorimeter.

3. Electronic refrigeration technology that can work continuously for a long time without stopping.

4. Stainless steel vacuum inner cylinder. The mixing system adopts a German * * * motor.

5. Fast testing speed, testing cycle ≤ 8min (rapid method) ≤ 15min (national standard GB/T213-2003).

6. Thermal capacity stability<0.2% precision<0.1% temperature resolution 0.0001K

7. This product has excellent performance and reliability even when operating in harsh environments.

8. Compact structure, beautiful appearance, easy installation and maintenance, low failure rate.

9. Small in size, extensively manufactured using molds, with high precision.

10. High degree of automation Automatic control of the water volume in the inner bucket, automatic control of the temperature difference between the inner and outer buckets of the instrument, and automatic completion of the entire test process.

11. Using the Windows XP operating system, multiple controls are implemented on one machine, with no impact on each other's testing and high software stability.

12. Rich data processing functions allow users to easily query historical experimental data Daily data Parallel sample data, etc.

Technical parameters:

Temperature measurement range: 5-40 ℃

Temperature resolution: 0.0001K

Precision: ≤ 0.1%

Single sample testing time: about 9 minutes

Heat capacity: approximately 10450J/K

Outer bucket capacity: approximately 40L

Inner bucket capacity: approximately 2.1L

Power supply voltage: AC220 (1 ± 10%) V, 50Hz

Dimensions (mm): 470 × 575 × 440

Host weight: approximately 40kg

Solid waste calorific value equipment ZDHW-300A microcomputer fully automatic calorimeterWhat is the reason for not igniting during use?

The main reason for ignition failure of calorimeter is that the ignition circuit is not connected, poor contact or short circuit.

When ignition failure occurs during the experiment, the oxygen bomb should be checked, first checking whether the ignition wire is short and conductive. First, use a multimeter to measure whether there is conductivity between the two ignition electrodes on the oxygen bomb (for a single head oxygen bomb, measure whether the center of the single head is conductive to the body of the bomb). If the circuit is still not connected, it is likely due to poor conductivity caused by the oxidation and rusting of the two electrode columns (sometimes "white rust", which is not easy to detect with the naked eye). At this time, use sandpaper to polish the two electrode columns, especially the part connected to the ignition wire, to make good contact. If the two electrode columns are polished clean and bright but still do not conduct, check whether there is conductivity between the two electrode leads on the calorimeter. If it does not conduct, it may be due to virtual soldering or broken wires in the lead out. Of course, it is also possible that the operator failed to ensure good contact with the electrode when connecting the ignition wire inside. At this point, simply replace the ignition wire with a new one (if the old one has already been electrified) and reconnect it. To determine whether it is a problem with the internal circuit of the instrument or the oxygen bomb, an ignition wire can be used to test the instrument separately. Connect the ignition wire to the ignition head and the instrument housing (on the oval stainless steel plate on the upper cover), and use the ignition function to test. If the ignition is normal, it is a problem with the oxygen bomb. If it doesn't ignite, it needs to be repaired. If it is confirmed through inspection that both the oxygen bomb and the ignition circuit of the instrument are conductive (the ignition wire turns red when the oxygen bomb is connected to the instrument and the ignition circuit is turned on), it indicates that the ignition failure is caused by a short circuit. At this point, the two electrode columns should be checked, mainly checking whether the electrode column with crucible holder is in contact with the oxygen bomb, whether the insulation sleeve column inside the oxygen bomb is damaged, and whether the water in the inner cylinder is clean or mixed with electrolyte. These factors may all cause short circuits and result in ignition failure.