WorksheetsParticle Counter
Total questions: 20
Worksheet time: 10mins
1. What is the function of a particle counter?
To measure air humidity
To detect and measure the quantity and size of particles in air or liquid
To control air pressure
To activate the HVAC system
2. In Esco company, what standard we used to determine the maximum allowable particle count?
ISO 14644-1 Class 4 or PIC/S Grade A
ISO 9001
ISO 14644-1 Class 5 or PIC/S Grade B
ISO 14644-1 Class 5 or PIC/S Grade A
3. What are the allowable particle counts in Esco’s cleanroom for sizes ≥ 0.5 µm and ≥ 5.0 µm?
25,000 and 50
32,500 and 22
32,500 and 20
40,000 and 10
4. What communication protocol is used by the IsoAir Pro-Plus?
Modbus RTU
Modbus TCP/IP
MQTT
Ethernet TCP/IP
5. What is the function of the input registers (30001–30260) in Modbus for the particle counter?
To configure alarms and sample times
To store raw data
To provide read-only information for ID and data collection
To activate coil status
6. What address is used to command the particle counter to start sampling?
00/05
00/01
30001
00/03
7. What address indicates that the data from the particle counter is available?
00/01
00/02
30221
40003
8. What is the address used to configure the sampling interval?
40002
40003
40004
40005
9. What address shows the data for particles sized ≥ 0.5 µm?
30229 and 30230
30231 and 30232
30233 and 30234
30235 and 30236
10. What address shows the data for particles sized ≥ 5.0 µm?
30229 and 30230
30231 and 30232
30233 and 30234
30235 and 30236
11. In which program step do we configure the sample interval, hold/tare time, and repeat count?
#step.startSampling
#step.setSampleCycle
#step.readScaleFactor
#step.resetData
12. When data is not available, which step will be activated after #step.readDataStatus?
#step.resetData
#step.readCounterStatus
#step.readCounterdata
step.setSampleCycle
13. What must be done for the particle counter to perform another sampling cycle after completing one?
Press the manual button
Write to address 40001
Reset data available
Set Start Sampling
14. How many samples are taken in one cycle?
15
25
35
45
15. What is the function of the Block Rolling feature?
To shut down the system when not in use
To delete all data
To manage the display of monitoring data such as time, rolling, and cumulative values
To sync the sensor to the internet
16. What is meant by Raw Cumulative data?
Data based on working hours
Total particle count per minute
Total particle count per hour
Particle data while sensor is off
17. What is Rolling 0.5 data?
Total particles count < 5.0 µm per hour
Total particles count < 0.5 µm per minute
Total particles count < 0.5 µm per 30 minute
Total particles count < 0.5 µm per hour
18. What is Rolling 5.0 data?
Total particles count < 5.0 µm per hour
Total particles count < 5.0 µm per minute
Total particles count < 0.5 µm per hour
Total particles count < 0.5 µm per minute
19. When is the report from the particle counter printed?
Every minute
Every 1 hour
Every 30 minutes
Anytime
20. What is the volume per sampling cycle?
1 m2
1 m3
0.1 m3
10 m3
