MIL STD 810G Sand Dust Test Chamber Manufacturer | Test Method 510.5

MIL STD 810G sand dust test chamber is employed to perform and test all mechanical, optical, electrical, electronic, chemistry and mechanical device devices liked to be exposed to dry processing sand or dry processing dust-laden environment. The MIL STD 810G sand dust test chamber has two functions: According to the MIL-STD-810G 510.5 Procedure I and Procedure II, Prepare the dust (< 150μm) test procedure and sand (150 to 850μm particle size) test procedure. The purpose of dust (< 150μm) procedure as below:

This test procedure is performed to assist measure the flexibility of equipage to resist the results of mud that will hinder openings, penetrate into cracks, crevices, bearings, and joints, and to judge the effectiveness of filters. Sand (150 to 850μm particle size) procedure: The Sand (150 to 850μm particle size) procedure is performed to assist measure the flexibility of equipage to be hold on and operated in processing sand conditions while not degrading performance, effectiveness, responsibility, and maintainability because of abrasion (erosion) or preventive effects of huge, sharp-edged particles.

MIL STD 810G sand dust test chamber
Step 1. Put the test sample into MIL STD 810G sand dust test chamber and stable at commonplace close temperature, modify the air rate to 8.9 + 1.3 m/s (1750 + 250 ft/min), or as otherwise determined from your test program.
Step 2. Modify the dust feed management for a dust concentration of 10.6 ± 7 g/m3 (0.3 + 0.2 g/ft3)
Step 3. Unless otherwise specific, maintain the conditions of Step 1 and 2 for a minimum of six hours. If needed, sporadically reorient the take a look at item to reveal alternative vulnerable faces to the dirt stream.
Step 4. Stop the dust feed. Take a look about the test section air velocity to just about 1.5 +1 m/s (300 + 200 ft/min) and modify the temperature to the desired high operational temperature.
Step 5. Maintain the Step 4 conditions for a minimum of one hour following to take a look at item temperature stabilization.
Step 6. Modify the air rate thereto employed in Step 1, and restart the dust feed to take care of the dust concentration as in Step 2.
Step 7. Continue the exposure for a minimum of six hours or as otherwise specific. If your test samples fails to control as meant, follow the steerage in paragraph Otherwise proceed to Step 8.
Step 8. Stop the dust feed and permit your testing samples come to plain close conditions at a rate to not exceed 3°C/min (5°F/min). Stop any air flow and permit the dirt to settle (possibly up to twelve hours).
Step 9. Take away accumulated dust from your test samples by brushing, wiping, or shaking, taking care to avoid introduction of extra dust or disturbing any that will have already entered your test samples. Don’t take away dust by either air blast or vacuum improvement unless these strategies are probably to be employed in service.
Step 10. Perform associate degree operational register accordance with the approved test program, and document the results for comparison with pretest information.
Step 11. Examine your testing samples for dust penetration, giving special attention to bearings, grease seals, lubricants, filters, ventilation points, etc. Document the results.
Test Procedure I : Blowing Dust Test
Step 1. Increase MIL STD 810G sand and dust test chamber’s temperature (at a rate to not exceed 3°C/min (5°F/min)) and stabilize to check your samples at its high in operation temperature.
Step 2. Adjust the air velocity according to your test program and make MIL STD 810G sand dust test chamber working in good condtion.
Step 3. Regulate the sand feeder to get the sand mass rate determined from the pretest standardisation.
Step 4. Maintain the conditions of Step 1 through 3 for the length laid out in the samples testing program. If needed, re-orient the check item at 90-minute intervals to reveal all vulnerable faces to processing sand, and repeat Steps 1-3.
Step 5. If operation of your test samples throughout the check is needed, perform associate operational check throughout the last hour of the check, and document the results.
Step 6. Stop the sand feed. Enable your test samples to come back to straightforward close conditions at a rate to not exceed 3°C/min (5°F/min). Stop any air flow and permit the sand to settle. Take away accumulated sand from the check item by victimisation the strategies anticipated to be utilized in service like brushing, wiping, shaking, etc., taking care to avoid introduction of further sand into your test samples.
Step 7. Conduct associate operational check your test samples in accordance with the approved check set up, and record results for comparison with pretest knowledge.
Step 8. Visually examine your test samples searching for abrasion and impeding effects, and any proof of sand penetration. Document the results.
Test Procedure II : Blowing Sand Test
outside view of MIL STD 810G sand dust test chamber
Product Model MIL-STD-810G-SC1000-IP5
Test Samples Volume 500 Litres|1000 Litres
Test Room Size W( 1000)mm × H(1000 )mm × D(1000 )mm
Overall Appearance Size W(4200 )mm × H( 2200)mm × D(2400 )mm
Air Velocity 1.5 ~ 8.9 m/s (Blown Dust Test)|18.0 ~ 29.0 m/s (Blown Sand Test)
Environment Conditions Ambient Temperature is +5~+28°C, Relative Humidity ≤85%
3.0 ~ 17.6 g/m3 (10.7 ± 7 g/m3) – Blown Dust
0.18 + 0.2 g/m3 -Blown Sand
1.1 ± 0.3 g/m3 2.2 ± 0.5 g/m3 -Blown Sand
Temperature Inside Test Room RT+15~70°C
Relative Humidity Inside Test Room 45%~75%RH
Net Nominal Wire Diameter 50um|150um|150um~ 180um
Nominal Spacing Between Lines Not more than 70um
Dust Usage In Test Room 2Kg/m3|MIL STD 810G Sand Dust Test Chamber Manufacturer
Air Velocity ≤2m/s
Purging Time 0 ~ 9999.9 Hours Adjustable
Test of Time 1Minute~99H59M
Vibration Time 1 ~ 9999min Adjustable
The Sensor Sand Temperature Sensor: PT100, Dust Temperature Sensor: PT100

MIL STD 810G sand dust test mothod and flow diagram


Temperature: 5 ℃ ~ 28 ℃ Environmental Conditions
Relative Humidity: ≤85%
Air Pressure: 86kPa ~ 106kPa
AC220V power supply requirements: Single-phase two-wire + protective ground wire Power Supply Condition
Voltage Range: AC (220 ± 10) V
Frequency allowable fluctuation range: (50 ± 0.5) Hz
Protective grounding wire grounding resistance is less than
The user is required to configure the air or power switch of the corresponding capacity at the installation site, and the switch must be used independently for the device.
Maximum current:100A, Maximum power consumption: 45KW

● Safety Protection System of Wewon MIL STD 810G Sand Dust Test Chamber : The security protection system is the most important for users, and setting up multi-layer protection is an important measure to protect users.

● Phase Order Protection for mil std 810g Sand Dust Test Chamber: Three-phase power is easy to be out of phase or the line sequence is opposite can let the equipment damage or test personnel accident.

● Leakage Protection: The use of unqualified heating wire or humidifying pipe is enough to cause electric shock. Overtemperature Protection: The use of controllers with poor brand quality may lead to temperature loss and fire accidents。

● Fault Protection: When one of the indicators of the equipment is abnormal, the equipment will automatically prompt the reason for alarm and the solution. At the same time, the equipment will be suspended until the maintenance personnel solve the problem.

The dust-blowing vortex air pump, dust vibration motor and test time can be controlled respectively. Purging Time
Continuous and periodic blowing dust can be set at any time. Purging Cycle
Vibration and stop vibration time automatically alternate. Jar of Time
High – temperature nickel – chromium wire, rapid heating Roast Dust System
PT100 temperature sensor, PTD+SSR control, plus temperature switch protection
Vortex air pump, low noise, strong power Purging System
Overcurrent protection device to prevent damage caused by bad working conditions
Inch, 640 x 480 lattice, TFT color LCD display Microcomputer Controller
English and Chinese menu (optional) touch screen input
Failure alarm and cause, processing prompt function
Power off protection|MIL STD 810G Sand Dust Test Chamber Manufacturer
Upper and lower limit temperature protection function
Calendar timing function (auto start and auto stop)|MIL STD 810G Sand Dust Test Chamber Factory
inner structure of MIL STD 810G sand dust test chamber
The test area, instrument electric control area and machine room are designed and combined in a modular way to meet the humanized operation of testing and maintenance. The bottom of the box is equipped with high-quality movable PU wheels, which are easy for customers to move. Enclosure Structure
External tank material: high quality color steel electrostatic spraying Equipment Material
Inner liner material: high quality heat and cold resistant stainless steel plate
Single hinged door (facing box, left hinged, right handle) silicone rubber tight seal with large viewing window and stainless steel wiper Test Door 
Temperature anomaly protection Safety Device
Limit overtemperature protection of air conditioning channel
Motor overheating protection
Overload and short circuit protection
Total power supply phase sequence and missing phase protection (applicable to three-phase power supply)
AC220V power supply: one three-core (single-phase two-wire + protective ground wire) cable (about 4 meters long) Power Cable
NFB circuit breaker|MIL STD 810G Sand Dust Test Chamber Manufacturer Main Power Switch

Heating System of Wewon MIL STD 810G Sand Dust Test Chamber: Heating wire used at high frequency is very important in this system. Improper selection of Heating pipe, short service life, easy to produce funnel short circuit phenomenon, It is extremely inconvenient and distressing for users with high requirements, and seriously affects the production inspection schedule.

According to this, Wewon Environmental Chambers Co., Ltd. research and development of the latest new ceramic heating frame, ceramic materials resistant to high temperature, good insulation. No leakage short circuit, Intermediate through the German imported heating wire, wire diameter thick, high temperature resistance, resistance to dry burning.

Quartz glass tube for mil std 810g sand dust test chamber is inserted in the heating wire, the important function of which is to prevent the heating wire from becoming soft and falling when burning red, and to produce the fault phenomenon such as short circuit in the contact between the heating wire and the metal in the inner test room.

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