Prod Model: |
DPI-1 |
Type: |
Mechanical |
Application: |
Vehicles |
Explosion-proof Type: |
Flameproof |
Contact: |
Normally Open |
Product Description
DPI-1 Differential pressure indicator
Application
The differential pressure indicator is a robust and compact device indicating the contamination level of the filter elements.
The differential pressure between filter inlet and filter outlet is the measurable indicator for the contamination degree of the filter element. When the preset maximum value of differential pressure is reached, the filter needs to be cleaned.
The colour of the disc segments visible in the two displays indicates the contamination degree: The red segment rises proportionally. When the segment is completely red, the differential pressure limit is reached.
Design and operation
Inside the device is a plunger which is held in zero position by a spring. As differential pressure rises with increasing contamination, the plunger is displaced against the resistance of the spring. By magnetic transmission the display disc turns according to the movement of the plunger and shows more and more red segments. The setting of the requested differential pressure id effected by factory installation of a corresponding spring.
Differential Pressure Indicators with integral electronic contacts are provided with two switches which can be independently used either as switching contact or alarm contact.
At 75% and at 100% of the present differential pressure threshold value, the contacts of the reed switches are activated magnetically.
The housing of the Differential Pressure Indicator is made of coated diecast aluminium and for use at an operating pressure of up to 100bar.
In case of type 4.46 the internal parts are made of stainless steel and for use at an operating pressure of up to 160 bar. To avoid the danger of electrostatic charge, the cover glass may only be cleaned with a damp cloth.

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Our Services1. Delivery in time,delivery time is 7 days for sample and 15 working days for bulk order;
2. Strong production capacity and strict quality control system;
3. Your inquiry and problems related to our products or prices will be replied in 24 hours;
4. Well-trained and experienced staffs to answer all your inquires;
5. After-sale tracking service for all of our clients;
6. OEM is available; small quantities, mixed bulk orders are also welcome;
7. Payment: T/T, Paypal , Western Union, MoneyGram;
8. Delivery way: UPS, DHL, TNT, FEDEX, EMS, CHINA POST.
After-Sales Service Guarantee:
1.12 months warranty for most of our products;
2. We will arrange delivery of the goods on time;
3. Within the warranty period, we will bear all the quality problem of our products;
4. Beyond the warranty period, we will despatch the replacement parts to help fix the products, but the parts will be charged;
5. Without any problem, we will gain the feedbacks of our products to help improve better products.
FAQ Q:How to contact us?
A:tel:(86) 137 5036 8299
. Dongguan Avoa Electric Co., Limited located on the China guangdong, is specialized in producing electronics components, power switch, plugs & sockets, connectors applied to Household appliances, vacuum cleaners, sound sets. In addition, the company produces plastic-pressing (big, MID or small) and metallic-pressing parts, and may design all kinds of plastic die sets for our numerous customers also.
With a plant area of 5000 square meters and a building area of 5500 square meters, our company owns fully reinforced strength, complete test equipment inspecting methods and perfect quality system. Our products have passed the, CQC certificates of China Quality Certification center. Some products also passed UL Approbation of U. S. A or TUV Approbation of German Rheinland Technical Co., Ltd.
Our products are on sales everywhere domestically and are exported to Hong Kong, Taiwan, Europe and U. S. A For instance, the power switch of KBQ02B, KAG01A series of vacuum cleaner gain the UL certificate for the first time in the manufactory of China. So, the power switches were preferred by broad customers.
Our companys' essential principle is "Quality First and Reputation First", we will meet our customers' needs by the best quality and after-sales service. We cordially welcome the clients home and abroad to correspond and discuss with us and create the splendid enterprise hand by hand.