model: PW +20/380-1065
Adopting standards:
China: GB18352.6-2016，GB 17691-2018
U.S.A: EPA 40CFR86，EPA US 2010(CFR 1065)
Europe: 2003/76/EC, 715/2007/EC, 692/2008/EC
The particle weighing box of EST complies with all 7 standards of the US EPA US 2010 (CFR 1065). Control software and controller developed by EST company
Shock absorber device designed and manufactured by EST company
Temperature control and humidification system designed and manufactured by EST company
Environmentally friendly refrigerant
EST air purification system that meets the latest standards
Manufacturing standard: Chinese National Standard
The seven requirements of EPA Regulation 1065 for particle weighing bins in the United States: (see § 1065.190)
|
Serial Number |
Parameter |
Parameter values |
|
1 |
Dust prevention |
The weighing environment meets the cleanroom standards: ISO14644-1 Class six |
|
2 |
windbreak |
Wind speed in weighing area: ≤ 0.05 m/s |
|
3 |
constant temperature |
Weighing environment temperature: (22 ± 1) ℃ |
|
4 |
dew point |
Dew point of weighing environment: 9.5 ℃± 1 ℃ |
|
5 |
pressure monitoring |
Weighing environment pressure detection: ± 100 Pa |
|
6 |
shockproof |
Isolation platform isolates external noise and vibration |
|
7 |
Anti static |
Weighing environment electrostatic field: ≤ ±2V |
Basic configuration:
Particle weighing box body
Temperature and humidity dew point control system
Breeze regulation control system
Shock absorber device
Clean control system
Control and Monitoring System
Static elimination system
Technical parameters:
|
|
Parameter |
|
Experimental volume |
380 liters |
|
External dimensions |
1720 x 820 x 2000 mm (W*D*H) |
|
Internal dimensions |
890 x 630 x 680 mm (W*D*H) |
|
Outer panel of the box |
Galvanized steel plate, spray coating treatment |
|
Equipment entrance and exit doors |
Twisted chain on top |
|
Observation window |
660 x 660 mm (W*H) |
|
Side cleanliness transmission window |
250 x 250 mm (W*H) |
|
Operating hand hole |
ϕ190mm， Sealed operating glove assembly |
|
Inner surface |
SUS304 stainless steel |
|
Floor load-bearing capacity |
100KG |
|
Filter paper storage rack |
SUS304， Maximum load 10KG |
|
lighting |
Inside the experimental chamber |
Temperature and humidity control system inside the experimental chamber:
Temperature control:
|
Name |
Parameter |
|
temperature range |
+20 ℃ to +30 ℃ |
|
temperature fluctuation |
±0.5 ℃ |
|
Temperature display accuracy |
±0.1℃ |
|
refrigeration |
Directly cooled, adjustable, refrigerant R134a |
|
Heating |
Stainless steel heater with overheat protection |
湿度控制：
|
Name |
Parameter |
|
temperature range |
+20 ℃ to +30 ℃ |
|
Humidity range |
Relative humidity ranging from 40% to 50% |
|
Humidity fluctuation |
Relative humidity ± 3% |
|
Humidity display accuracy |
± 1% (steady state) |
Dew point range control: 9.5 ℃± 1 ℃
The humidifier water can be automatically replenished through a water storage tank. Automatic circulation of condensate water.
The air circulation circuit has been specially designed. Measurement area wind speed ≤ 0.05m/s
The above data was obtained under fixed environmental conditions: temperature+25 ℃, power supply voltage 220V, 50Hz, no thermal load
Environmental conditions for use: Temperature range:+15 ℃ to+35 ℃, no condensation.
Temperature and humidity sensors:
VAISALA HMT330 series temperature and humidity transmitter
|
Name |
Parameter |
|
Temperature measurement accuracy |
±0.2℃ |
|
Temperature measurement resolution |
0.1℃ |
|
|
At+15+ At 25 ° C: ±1 %RH (0 ... 90 %) ±1.7 %RH (90 ... 100 %) |
|
At+25+ At 40 ° C: ±(1.0 + 0.008xreading) %RH |
Shock absorber device:
The function of shock absorbers is to prevent external vibrations from being transmitted to the microbalance and causing an unstable state.
EST Micro Balance Shock Absorption System
|
Name |
Parameter |
|
Dual stage damping and shock absorption platform |
Natural stone + metal platform |
|
Metal platform size |
730 * 560mm (W*L) |
|
Platform load |
20kg |
|
natural frequency |
≤10Hz |
|
Mechanical shock absorber |
Special design |
|
weight |
>20kg |
|
Stone platform size |
200 * 350mm (W*L) |
|
Platform load |
5kg |
|
Mechanical shock absorber |
Special design |
洁净度保持系统：
If the laboratory environment conditions cannot reach the cleanliness level, the test chamber must be equipped with a suitable high cleanliness filter to filter the air inside the chamber. In addition, a transition window for air shower transmission with high cleanliness filtration should be installed to prevent dust from entering and exiting the cabin with the filter box.
Name
Parameter
Cleaning grade
Meets and exceeds the US federal EPA standards
Transition window for air shower transmission
Installed on the right side bulkhead
Transfer window size
250 * 250mm
Two electric doors for one in and one out
High cleanliness air shower filter
Control the internal and external switches separately
High cleanliness filter
Can be replaced with a high-efficiency filter without partitions
Filter size 630 * 490 * 46mm (width * depth * height)
Booster fan
Flow control valve
Diversion net
Voltage regulator box
Built in booster fan
Built in pre filter (medium cleanliness filter)
Pressure monitoring device
Name
Parameter
Differential pressure gauge
Measurement range: 0-60Pa
Capacitive quartz crystal material
(Used to monitor the pressure difference of the filter inside the test chamber)
Resolution: 1Pa
Accuracy: 2.0% of pt or 1% of max
High precision absolute pressure sensor
(Used to measure the ambient air pressure inside the environmental chamber)
Measurement range (range): 90-110kPa
Accuracy: ± 0.2%
Accuracy ± 75Pa, repeatability ± 25Pa, noise ± 5Pa
Static elimination system:
The board inside the test box is made of excellent conductive metal and well grounded
Filter paper storage rack with excellent conductive metal and good grounding
DC micro ion fan working power supply: 220V/50Hz
Operating temperature: 0-50 ℃
Dimensions: 50mm (D) × 78mm (W) × 113mm (H)
Static voltage: ± 2V
Placement in the testing chamber
Stainless steel normally closed tweezers
Grounding environment: power supply grounding and shell grounding for the warehouse
Control and monitoring system:
Monitor Color LCD display
Monitor the set temperature value and the actual value
Humidity setting value and actual value
Over temperature protection
Warehouse pressure
Fault code display
running state
Control the operation terminal at the front of the experimental chamber
Touch screen setting values
The pressure difference instrument inside and outside the box is located on the front of the box
External device communication interface network interface
The manufacturer's program fully complies with the safety and personal health protection directives of China and Europe
Chinese standards:
-GB 150-1998 Steel Pressure Vessel Standard
-GB 4343-1995 EMC standard
-GB5226.1-2002 Mechanical Safety Mechanical Electrical Equipment Standard