elevator parts low cost load cellType EWD-H-P2 Elevator Load Weighing Device

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Product Description:

elevator  parts low cost load cell
Type EWD-H-P2 Elevator Load Weighing Device


This system is applicable to all elevators with movable car platform in need of overload signals. This device is of extremely high performance-price ratio. This appliance is to overcome the inherent disadvantage of the mechanical overload switch and to replace it.

Main characters:

1. Working in a contactless and inductive way. No mechanical movement itself. Being directly installed in the original place of overload switch. No necessity of changing the mechanism of elevator car.

2. Adopting strong inductive magnet, improving the anti-interference of the system to the utmost.

3. The electrical property is in compliance with the standard of the International Electro-technical Commission (IEC).

4. Rated relay dynamic open, overload relay -dynamic close and output-break are easy for customers to use.

5. More accurately positioning, small overall size, easy installation and adjustment, simple structure and low price.

Technical Specification:

Application Range

Applicable to all elevators with movable car platform in need of overload signal with a inspection clearance of 815.



Overload turning pointRated load adjusting point±0.05

Rated loadoverload retention gap0.50mm


System Error

1.5% (540)


Output Mode

1 pair of relay dynamic CLOSE or dynamic OPEN contacts respectively with the capacity of DC/AC 48V/500mA.


Operation Ambient Temperature



Power Supply

AC/DC 24V(±10%)/15mA. The operating current of the whole machine100 mA.


Install Position

Movable elevator car platform


Overall Size

Column of Φ24×83 mm

Working Principle:

This system weighs the elevator car load based on the principle of the elastic deformation of movable elevator car platform caused by loading with the HALL sensor measuring the change of displacement, fulfilling the aim of load weighing.

Installing Method:


1. Please refer to the above figure to install this device with the connecting support (made by the customer himself) closing the middle part of the car platform as near as possible.

2. Let the magnet adhesive on the car platform with the marking-face right facing the induction point of the device.

3. Install and adjust this device so that the magnet on the car platform aiming at the center point of its upper face. Meanwhile, assure the end face of this device in parallel with that of the magnet.

4. When elevator is of rated load, adjust this device up and down to make the indicator just turn green, yellow one (red one +green one) turn down , at this time, fasten this device and the adjustment is finished.  

5. At the time of overload, indicator of this device keeps yellow (green+red)  

The principle of system wiring:




Red, black

System Operating Power

Operating Power   AC/DC24V(±5%)/100mA

Yellow, White

Overloading relay dynamic Close contact

Contact Capacity:

DC/AC 48V/500mA

Blue, green

Overloading relay dynamic Open contact

Green, white

Overloading relay dynamic break contact

Attention : Output wire of this device must not be connected with external power supply to avoid everlasting damage.


Accessory: Inductive magnet [20×20×4mm3]  1 piece  Fastening Nut: 2 sets

If there is any abnormality during adjustment or operation, contact our company directly.

Attention: The inductive magnet is specially made of rare earth magnet with strong magnetism for this product. Take special care in the course of installation. Don’t let it close to the high temperature above 100℃ to avoid demagnetization and our company will not be responsible for the personal hurt and equipment damage arising from this.

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Q:How many meters is the wall of the construction elevator?
I know the bunter lift is six meters so you can get it
Q:When building tall buildings, the machine that USES to lift concrete to wait for tall building
The concrete pump, which can be raised in a certain radius, is the tower crane.
Q:Why is the construction elevator open on one side and the other on the other
Open the door, commonly known as the feed door, usually open up, and add weights to both sides. Only if the construction ladder stops at the bottom. If the door is double open, the room must be left with half a door (> 1.3 m) to open the door completely. If it is a single open door that opens up, you can save space in the cage. Double door, namely, two doors, either up or down, the two doors balance weight. It usually arrives on the required floor. There is enough room for double doors.
Q:The construction elevator can not operate during the use of several stages of wind power
Well, there are no definite rules. It's up to you to decide whether to use it or not
Q:How many people are there for construction workers
At the end of the 20th century, the elevator was powered by the permanent magnet synchronous towing machine. It greatly reduces the space of the machine room, and it has the advantages of low energy consumption, energy efficiency and speed, which has greatly contributed to the development of real estate. Thyssenkrupp elevator company has developed a new type of "multiple lift" that can operate vertically. Take the size of a common car The size of the escalator is quite different: but the total area is required in the national standard. Give you a general calculation The width of the well is the width of the car. Well, the depth of the well = the car depth + 600 (for the reside) The width of the well is the width of the car. Well, the depth of the well = the car's depth + 1200 (for the rear-end). The u-shaped tourist ladder is usually around 1000kg The car is usually about 1300x1800 The steel structure shaft is width between 2200 and 2400, depending on the size of the door. The depth of the structure is about 1500, and the rear wall is empty.
Q:The elevator is banned from using elevators for more than a class of high winds
According to the safety requirement is level 6, please adopt!
Q:Why is the construction elevator not up to the roof
Construction elevators are often called construction elevators, but construction lifts include a broader definition, and construction platforms are part of the construction elevator series. Simple construction elevator is by car, driving mechanism, standard section, attached to the wall, chassis, fence, electrical system and so on several parts, manned cargo construction machinery is a frequently used in construction, because of its unique enclosure structure make it take up both comfort and safety, construction elevator is usually used with tower crane on the construction site, the average load in 1-3 tons, running speed is 1 to 60 m/min. The construction elevator of our country is more and more mature, and gradually goes to the international.
Q:What is the height of protecting door protection of construction elevator
Elevator protection door is strict according to the mandatory standard to set up elevator well protection measures for safety technology. The shaft must be set in the range of 1.5 to 1.8, with protective railings or fixed gate and protective railings or fixed doors. 2, elevator well in plus or minus zero layer need to set up the first safety net, every two layers, the upper part of most every 10 m AnQuanPing network design, network security quality must gb5725-1997 "safety net" of standard network, methods must be checked in accordance with the relevant provisions. Installation in the safety net elevator dismantlement, the operator should wear the seat belt according to the regulation. On the floor and roof, a short side hole is larger than 1.5 m, the hole should be set in the requirement of the protective railing, the bottom setting safety net. To set safety warning signs that meet national standards in the elevator shaft. Safety warning signs are clear, warning lights should be set at night. The protective railings and gates shall be marked with yellow and black stripes and shall be manufactured according to the standards of construction safety technical specifications. 5, elevator wellhead protection facilities need to dismantle or change temporarily, and by the project full-time safety sign shall be the responsibility of the project director, and ready to move or change the security countermeasures. To inform all staff at the same time; Recovery after safety facilities must be by the project director, full-time security personnel and other related personnel on-site inspection management, qualified rear can continue to use.
Q:Is the construction elevator a special equipment
Belong to special equipment construction lifter, but generally used as home building municipal engineering does not belong to the quality and technical supervision management, but belong to the administration of urban construction. Because the system of quality control unless invited, shall not be involved in military, aerospace, nuclear industry, mine, municipal, sea, railway locomotive hoisting machinery management.
Q:The staff on the construction platform shall not exceed the number of people
There is no specific specification that should be more platform-specific

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