Zirconia oxygen analyzer

RSY seriesZirconia oxygen analyzer

Measurement range: 0-20
Signal output: 0-10mA, 4-20mA
Temperature accuracy: 750 ℃± 5 ℃
Power supply: 220VAC
Probe insertion depth: 0.5m, 1m, 1.2m

Zirconia oxygen analyzerMain Features

1. The zirconia head of the sensor adopts high-temperature ceramic welding technology to avoid thermal stress damage.

2. The zirconia probe adopts a full 321 stainless steel (1Cr18Ni9Ti) sheath, which has wear resistance and corrosion resistance. The probe can be used according to the on-site situation

Customized according to the situation.

3. Direct insertion: No sampling system required, fast response, effectively reduces ash blockage in flue gas, and can withstand higher temperatures.

4. Thermal diffusion reference: No specialized reference air pump required, easy to use and maintain.

5. Dual parameter design: Overcoming the discreteness of domestic zirconia performance, accurate measurement, and extending service life.

6. Online calibration of operating conditions: Accurate and reliable, convenient online calibration of single standard gas, direct calibration of operating points, and precise measurement.

7. Thermal Inert Protection: Easy to install, can be hot installed, and has strong adaptability to shutdown and start-up of the furnace.

8. Detachable components: The components are easy to replace, maintain, and reduce usage costs (the explosion-proof zirconia analyzer detector part is designed as an integrated unit and cannot be disassembled at will).

9. Multi functional display: Oxygen content (%); Oxygen potential; Temperature and background potential parameters are displayed intuitively and conveniently through digital display

10. Dual range: It has both 0-10% and 0-20.6% dual ranges, with a wide measurement range that can be adjusted at the factory.

11. Dual output: It has both switch node output and 4-20mA dual output.

12. Large load: 750 ohms/4-20mA, easy to install remotely.

13. The background potential can be adjusted, with a wide range of adjustment, and parameters such as component aging can be checked at any time.

14. Fully floating design: common mode input, strong resistance to electric field interference, no need for grounding wire, easy installation.

15. The product series has strong adaptability: it can be applied to various furnace types such as gas, oil, and coal. Suitable models can be selected for measuring temperatures from room temperature to 1400 degrees Celsius.

Malfunctions and Solutions of Zirconia Oxygen Analyzer

Malfunctions and Solutions of Zirconia Oxygen Analyzer

1、 The malfunction indicator shows a low value.

Reason 1: There may be combustible gases present in the sample gas. Zirconia solid electrolyte operates at high temperatures ranging from 600 to 850 degrees Celsius. If there are flammable components such as hydrocarbons in the sample gas, combustion reactions will occur and oxygen will be consumed, resulting in low instrument readings.

Processing method: Sampling inspection of the sample gas. If there is indeed combustible gas present in the sample gas, the operating conditions should be adjusted to remove the combustible gas, or a purifier should be installed in the sample gas to remove the combustible gas components.

Reason 2: The clogged probe filter and increased air resistance affect the diffusion rate of oxygen molecules in the measured gas.

Solution: Reverse blow and clean the filter. If it cannot be unblocked, replace the filter.

Reason 3: The furnace temperature is too high.

Solution: Check and calibrate the furnace temperature.

Reason 4: The range potential is too high.

Solution: Use the given potential difference to correct the range potential.

2、 The fault symptom meter indicates a high value

Reason 1: Zirconium tube ruptures and leaks air.

Solution: Check and replace the zirconium tube.

Reason 2: Small cracks appear in the zirconium tube, causing short circuit penetration in the electrode section.

Solution: Check and replace.

Reason 3: Zirconium tube aging.

Solution: Measure the internal resistance of the zirconium tube. The method is to use a digital multimeter to detect the resistance between the two electrode leads at the specified working temperature of the instrument. The internal resistance of a new zirconium tube should be less than 50 ohms. If the internal resistance of the zirconium tube is greater than 100 ohms, the furnace temperature can be appropriately increased to continue use. If the instrument error is too large and exceeds the allowable error range, the zirconium tube should be replaced.

Reason 4: The furnace temperature is too low, causing the internal resistance of the zirconium tube to be too high.

Solution: Check and calibrate the furnace temperature.

3、 The instrument shows no indication of the fault phenomenon.

Reason 1: The electric furnace is not heated.

Solution: Check the heater, thermocouple, etc. of the temperature control circuit, find out the reason why the electric furnace is not heating, and deal with it.

Reason 2: The signal output circuit is open.

Solution: Check the output circuit wiring to ensure good contact.

Reason 3: The porous platinum electrode of the zirconium tube is broken.

Solution: Use a digital multimeter to check the internal resistance of the zirconium tube. If the resistance between the two electrode leads of the zirconium tube is greater than 100 ohms at the specified operating temperature of the instrument, the zirconium tube should be replaced.

4、 The fault phenomenon is that regardless of which gear the instrument is placed in, the displayed value indicates full range.

Reason 1: The electrode signal is reversed.

Solution: Connect correctly.

Reason 2: The zirconium tube electrode falls off, or the platinum electrode evaporates after use.

Solution: Check the resistance between the two poles of the zirconium tube. If it exceeds 100 ohms, the zirconium tube should be replaced.

5、 Fault phenomenon: The pointer of the meter head shakes.

Reason 1: The amplifier amplification factor is too high.

Solution: Repair the amplifier and adjust the amplification factor.

Reason 2: Poor wiring contact.

Solution: Check and tighten the wiring terminals.

Reason 3: Poor contact of the connector.

Solution: Clean the connector.

6、 Fault phenomenon: large fluctuation in output signal

Reason 1: The sampling point location is not suitable.

Solution: Coordinate with the process to inspect and change the location of sampling points.

Reason 2: The combustion system is unstable, operating at overload or with open flames impacting the zirconium tube, resulting in significant changes in gas flow rate.

Solution: Check in coordination with the process, adjust process parameters, and inspect and replace air circuit valves.

Reason 3: The sample gas carries water and vaporizes in the zirconium tube.

Solution: Check for condensation or water mist in the sample gas, and slightly tilt the outlet of the zirconium tube downwards to improve the sample gas pretreatment system.