This measuring instrument is widely used in the manufacturing plants and operation sites of various high and low voltage switches and switch cabinets. This measuring instrument can conduct mechanical performance tests on the plum blossom contacts inside high-voltage switch cabinets without disassembling the plum blossom contact springs, solving the problem in actual production that only the mechanical tests of individual fastening springs can be carried out, but not the assembled contacts.

Product Features
Lightweight and portable, easy to carry: The main unit and accessories are packaged in separate boxes. The portable design makes it convenient to carry.
High-definition large screen, intuitive display: Equipped with a high-resolution true-color LCD screen, the content is displayed clearly and intuitively.
Voice prompts, simple operation: The entire process is accompanied by artificial intelligence voice prompts, providing a foolproof operation and making the test simple.
Precise collection and stable operation: The pressure sensor adopts high-precision strain gauges from AVIC, featuring high precision, low temperature drift, small creep, and excellent long-term stability.
Simple calibration and self-calibration support: Users can calibrate, zero and reset the sensor by themselves, and the factory parameters can be restored.
The threshold can be set, and the result is self-judged: The alarm threshold can be set, the detection result is intelligently determined, and it is announced by voice.
Unit switching, wide adaptability: Supports multi-unit display, pressure measurement units support "N" and "kg";
Data storage for convenient query: Built-in large-capacity memory, supporting measurement data recording, historical records and browsing through the large screen.
Built-in printer for convenient recording: Equipped with a built-in printer, it can print test results, including time, switch cabinet and substation information.
Data upload and report generation: Supports two modes for data upload, USB direct connection and USB flash drive copy, facilitating the generation of test reports by the upper computer.
The instrument is equipped with a large-capacity lithium battery, a power interface with an adapter, charging and discharging indicators, and a battery level display.
It is equipped with a high-precision real-time clock and can perform date and time calibration.

Main uses and application scope
1) It is applicable to the measurement of the contact pressure of the star-shaped contact fingers of high-voltage switch cabinets in substations, power plants and switch stations.
2) It is applicable to the contact finger pressure measurement of high-voltage disconnectors and high-voltage grounding switches in substations, power plants and switch stations.
3) It is applicable to the measurement of the contact finger pressure of the drawer-type circuit breaker in low-voltage switch cabinets;
4) It is applicable to the touch finger pressure detection during the production or maintenance process of high-voltage switch cabinets, high-voltage disconnectors and high-voltage grounding switches.

Usage environmental conditions
Ambient temperature: -20℃ to +50℃
Relative humidity: ≤85%RH
Environment: Free from vibration, dust, corrosive gases, flammable gases, oil mist, water vapor, dripping water or salt, etc.
Altitude: ≤3000M
Atmospheric pressure: 70-106Kpa
Storage temperature: -30℃ to +60℃

Main functions
Pressure measurement function
Support the pressure measurement of various specifications of plum blossom contacts.
2. Liquid crystal display function
It supports the display of measurement result values and the interface can be switched through keys.
3. Touch key setting function
It has functions such as parameter setting, sensor calibration and zeroing, alarm setting, and system setting.
All setting parameters can be viewed on the screen.
4. Record storage function
Record the measured data values
Store in FAT32 file format
5. Calibration function
Support the user-defined calibration zeroing function
6. Alarm function
When the measured value exceeds the set alarm limit, the buzzer will sound an alarm (voice alarm can be upgraded).
7. Clock function
It is equipped with a high-precision real-time clock function and can perform date and time calibration
8. Data upload function
It is equipped with a USB flash drive interface and supports copying measurement data to the upper computer.
9. Power management function
Battery charging function, built-in battery, power interface with adapter. It has the functions of charging and discharging indication and battery level display

Main parameters
1. Plum blossom finger pressure measurement
Measurement range:
Pressure range: ≤1000 N
Measuring diameter: 33mm to 107mm; larger than 107mm (customizable)
Supported plum blossom contact specifications: 630A, 1250A, 1600A, 2000A, 3150A and 4000A
Measurement error: ≤ 1%
The measurement results can be displayed in units such as "N" and "kg", and can be switched.
The alarm function is set within the range of 0 to 1000N

2. Isolation knife switch contact finger pressure measurement
Measurement range:
Pressure range: ≤2500 N
Touch distance: 15mm - 90mm (customizable)
Supported high-voltage disconnector models: GW4, GW5, GW7, etc. transfer-in switches; Clamp switches such as GW6, GW16/17, GW22/23, etc. Indoor series tap switches such as GN2.
Supported high-voltage grounding switch models: JN series high-voltage grounding switches and JW series high-voltage grounding switches;
Measurement error: ≤ 1%
The measurement results can be displayed in units such as "N" and "kg", and can be switched.
The alarm function setting range is 0-2500N

3. Power parameters
Instrument power consumption: <15W
Adapter power supply: AC220V±10% /50Hz±10%
Built-in power supply working time: ≥8 hours
Charging port voltage: 12.6V

4. Environmental conditions for use
Operating temperature: -20℃ to +50℃
Storage temperature: -40℃ to +70℃
Relative humidity: ≤85%RH

5. Other indicators
It adopts an 8.4-inch color touch LCD screen.
The built-in TF card is adopted to store massive amounts of data, and the files are stored in FAT32 format
Clock date setting range: 00:00:00 on January 1, 1980-00:00:00 on December 31, 2099.

6. Dimensions and weight
Main unit weight: <3kg
Host size: 430mm X 345mm X 188mm