The KDZD400 series portable composite gas detector is used for rapid detection of various gas concentrations, temperature and humidity measurements, and alarm for exceeding standards.


KDZD400 adopts a 2.31-inch high-definition color screen for real-time display, and uses imported brand gas sensors. The main detection principles include electrochemistry, infrared, catalytic combustion, thermal conductivity, PID photoionization, etc.


KDZD400 can detect gas concentration in pipelines, confined spaces, and atmospheric environments. It can detect gas leaks or high concentration single gas purity with various background gases such as nitrogen or oxygen. It can detect more than 500 types of gases.

1. Can simultaneously detect 1-4 gases, with freely switchable units (conventional gases do not require input molecular weight, special gases input molecular weight automatically calculated and switched). Units available: PPM mg/m3、Vol%、LEL%、PPHM、ppb、mg/L。

2. Built in pump suction measurement, integrated water vapor and dust filters, fast response, and support for long distances. Sampling with built-in water vapor and dust filters to prevent sensor and instrument damage caused by water vapor and dust, suitable for high humidity and high dust environments; Sampling distance greater than 10 meters, special gas path design, can be directly detected; Gas with negative or positive pressure ranging from 0.5 to 2 kilograms has no effect on the measurement results.

3. Rich human-machine interface: 2.31-inch high-definition color screen, displaying real-time concentration, alarm, time, temperature, humidity, storage, communication, power, charging status, concentration unit, gas molecular formula, gas name and other information; The menu interface uses high-definition simulation graphics to display the function names of each menu.

4. Large capacity data storage function, supporting multiple storage methods: standard 100000 data storage capacity, larger capacity can be customized; Support real-time storage, scheduled storage, or only storing alarm concentration data and time.
Supports viewing and deleting data on the local computer, and can also upload data to the computer through a USB interface for analysis, storage, and printing using upper computer software. Optional RS485 communication.

5. High temperature gas detection (optional): Optional high temperature sampling and cooling filter handle or high temperature and high humidity pretreatment system can detect flue gas at a temperature of 400 degrees. Gas detection at higher temperatures can be customized.

6. Three display modes can be switched: simultaneous display of four gas concentrations, large font cyclic display of single channel gas concentration, and real-time curve. The automatic or manual cycle between each channel can be switched, and it is possible to set whether to display the maximum value, minimum value, gas name, and view the historical record curve graph.

7. The graphical display reflects the trend of gas concentration changes over a period of time in the form of curves.

8. The data recovery function can choose to partially or fully restore, eliminating the worries caused by misoperation.

9. Can be set to display maximum, minimum, and average values.

10. USB charging interface, with charging protection function, supports USB hot plugging: can be charged with a computer or power bank, compatible with mobile phone chargers; Has overcharge, overdischarge, overvoltage, short circuit, and overheating protection; 5-level precise power display; The detector can work normally during charging.

11. Adopting 4500mA high-capacity rechargeable polymer battery, it can work continuously for a long time

12. High precision temperature and humidity measurement (optional) with temperature compensation for the sensor. The instrument operates within a temperature range of -40 to 70 degrees Celsius

13. Support real-time detection or timed detection. When not detected, the pump can be turned off to extend the startup time.

14. Multiple alarm methods, with multi-dimensional three-dimensional indication of alarm status during alarm: including sound and light alarm, vibration alarm, and visual alarm. The types of alarms include concentration alarm, undervoltage alarm, and fault alarm.

15. Alarm values can be set, with multiple alarm modes: low alarm, high alarm, interval alarm, and weighted average alarm.

16. The misoperation recognition function automatically identifies and prevents concentration calibration errors, which can avoid adverse effects caused by human factors.

17. Zero point automatic tracking is not affected by zero drift during long-term use.

18. Multi level calibration of target points ensures the linearity and accuracy of measurements, and can simultaneously comply with national standards and local metrology bureau standards.

19. Log recording: Record calibration logs, maintenance logs, troubleshooting strategies, sensor lifespan expiration reminders, and next concentration calibration time reminders.

20. Meets the requirements of intrinsic safety circuit design, anti-static, anti electromagnetic interference, and has passed national standard testing and CMC measuring instrument production license certification

21. The protection level reaches IP65, which is waterproof, dustproof, explosion-proof, and shockproof.
 

Gas detection: composite gas (carbon monoxide CO, hydrogen sulfide H2S, oxygen O2, combustible gas Ex, etc.), optional: can detect the concentration and temperature and humidity of 4 gases
Detection range: 0~1, 10, 100, 1000, 5000, 50000ppm, 100MG/L, 100% LEL, 20%, 50%, 100% Vol optional, refer to the attached table, other ranges can be customized
Resolution: 0.001ppm (0-10ppm high-precision)/0.01ppm (0-10ppm); 0.01ppm (0~100 ppm), 0.1ppm (0~1000 ppm), 1ppm (0~5000 ppm or above); 0.01MG/L； 0.1%LEL； 0.01%, 0.001% Vol refer to the attached table, other resolutions can be customized
Detection principle: electrochemistry, catalytic combustion, infrared, thermal conductivity, semiconductor, PID photoionization, etc. are determined according to the range, on-site environment, and user requirements
Sensor lifespan: 2-3 years for electrochemistry, 2-3 years for catalytic combustion, 5-10 years for infrared, 2-5 years for thermal conductivity, 2-3 years for semiconductors, and 2 years for PID
Detection method: Built in pump suction, flow rate of 500 milliliters per minute
Display mode: 2.31-inch 320 * 240 high-definition color screen display, operated by 5 buttons
Detection accuracy: ≤± 3% F.S (higher accuracy can be customized)
Linearity: ≤± 2%
Repeatability: ≤± 2%
Alarm methods: sound and light alarm, vibration alarm, visual alarm, sound and light+vibration+visual alarm, optional alarm shutdown
Response time: T90 ≤ 20 seconds
Recovery time: ≤ 30 seconds
Working power supply: DC3.7V
Battery capacity: 3.7VDC, 4500mA large capacity rechargeable polymer battery with overcharge, overdischarge, overvoltage, overheating, and short circuit protection functions
Operating environment: Temperature range of -40 ℃ to+70 ℃; Relative humidity ≤ 0-99% RH (built-in filter can be used in high humidity or high dust environments)
Sample gas temperature: -40 ℃~+70 ℃; Optional high temperature sampling and cooling filter handle for detecting smoke concentration at 400 degrees Celsius or higher
Temperature measurement (optional): -40 ℃~+120 ℃ with an accuracy of 0.5 ℃
Humidity measurement (optional): 0-100% RH accuracy 3% RH
Data Storage: Comes with a standard capacity of 100000 pieces of data, and larger capacities can be customized to support local viewing, deletion, or data export. Free upper computer communication software, storage function is turned off by default and can be set to on, with storage time interval settings
Communication interface: USB (charging and communication), optional RS485 or RS232 communication interface
Interface language: Chinese or English can be set, default English interface
Protection level: IP65, dustproof and splash proof
Dimensions: 160 * 70 * 28mm (L × W × H)
Weight: 300g
Standard attachments: instruction manual, certificate of conformity, USB charger (including data cable), back clip, 1 humidity dust filter, aluminum alloy instrument box
Optional accessories: 1.2m extendable sampling handle (1-10 meter hose, standard length 1 meter), temperature and humidity measurement function, high temperature sampling and cooling filter handle, high temperature and high humidity pretreatment system, multiple humidity and dust filters
Application scenarios: Petroleum, chemical, pharmaceutical, environmental protection, flue gas analysis, air treatment and other occasions that require gas concentration detection