APSL801Type High-Pressure Gas Fully Automatic Piston Pressure Gauge

1. Overview:

APSL801The high-pressure fully automatic gas piston pressure gauge consists of an air compressor, an intelligent high-pressure gas source, a dedicated pressure controller (calibration workbench), and a fully automatic gas piston pressure gauge. The intelligent high-pressure gas source is composed of a high-pressure pump controller, an automatic pressure regulating valve, and a high-pressure pump (two-stage boosting). During normal operation, the fully automatic piston pressure gauge controls the intelligent high-pressure gas source, sends pressure setpoints according to calibration points, maintains the gas source pressure near the setpoint, and controls the pressure controller for fine positive and negative adjustments (adjustment range +-10%), keeping the piston in a floating state.

The outlet pressure of the intelligent high-pressure gas source is adjusted back by the pressure controller, which controls the inlet and exhaust valves of the pressure controller to slowly adjust the outlet pressure back.

2、APSL811Performance indicators of the intelligent high-pressure gas source:

2.1, Pressure range of each gas path

Drive gas source PL output by the air compressor:(0.3-0.8)MPa，

Flow rate:(1-1.5)m3/min。

The back pressure gas PA output from the nitrogen cylinder (pump inlet pressure): (0.1-0.8) MPa, must not exceed1MPa。

High-pressure pump outlet pressure Po (high-pressure nitrogen): (1-100) MPa. When stable,Po=120*PL+10*PA。

2.2, Performance of automatic pressure regulator

Origin: Japan; Set pressure range: (0.05-0.85) MPa.

Maximum flow rate:3m3/min. Maximum supply pressure:1.25MPa。

Connection port: 1/2” NPT.

Control characteristics: output pressure in relief and power-on states:0.5MPa。

Control accuracy: +-0.01MPa, corresponding outlet pressure: +-1.2MPa。

2.3, Functions of the high-pressure pump controller

1) Pressure detection function: simultaneously measure the driving gas source pressure PL, inlet pressure PA, outlet pressure Po, and can be displayed on the display window.

2) Pressure setpoint function: The pressure setpoint can be set locally, remotely via serial port, or via WiFi on a mobile phone.

3) Pressure control function:

Control according to the setpoint. When Po is higher than the setpoint,0.5MPa the high-pressure pump stops working, and the outlet pressure remains unchanged. When Po is lower than the setpoint,0.5MPa When, the high-pressure pump starts working.

After setting the pressure setpoint, the drive pressure PL is automatically adjusted according to the formula.

4) Alarm function:

When the drive air source pressure PL is out of range.

The drive air supply pressure PL exceeds the required value calculated based on the outlet pressure0.05MPa when.

The inlet pressure PA is out of range.

The outlet pressure Po exceeds the set value2MPa。

5) Protection function: stop pressurization upon any alarm.

2.4, Safety assurance

No manual valves are provided, ensuring no opportunity for personnel to come into close contact with high-pressure sources, ensuring personnel safety.

Adopt 8mm stainless steel tube hard seal method to transmit pressure, ensuring sealing and safety during pressure transmission. Even at 300MPa pressure, leakage can be prevented.

Very low inlet pressure is adopted, eliminating safety hazards caused by inlet pressure. And it can greatly extend the usage efficiency of nitrogen.

The outlet pressure can be precisely controlled, and the driving pressure is precisely controlled, ensuring that the outlet pressure will not lose control under any circumstances, ensuring safety.

Comprehensive detection of outlet pressure, drive pressure, and inlet pressure is carried out, with complete alarm and protection functions. Any alarm signal will stop pressurization to ensure safety.

An automatic pressure regulator is set so that the inlet pressure can automatically follow changes in the set value. Even if the solenoid valve controlling the outlet pressure fails, no safety accident will occur, only the pressure control deviation will be slightly enlarged.

A iron plate shell is set, and all devices are inside the iron plate shell. Even if the pump leaks, it will not hurt people.

3. Performance indicators of the special pressure controller:

Control air source:0.5MPa。

Pressure is controlled through intake and exhaust pneumatic needle valves and piston system.

Exhaust uses expansion and deceleration device.

It has both pressure boosting and reducing functions.

Has the function of intelligent high-pressure gas source pressure relief.

Can precisely control the piston position, keeping it within +-1mm.

Can install 2-4 gauges under test, with interfaces asM20X1.5。

4. High-pressure gasFully automaticPerformance specifications of piston gauge:

4.1. Working environmental conditions:

Ambient temperature: (20±1) ℃;

Relative humidity:80% or below;

Gas source: high-purity nitrogen cylinder,（0.1-0.8）MPa；

Power supply:220V/50Hz。

4.2 Technical parameters:

Pressure measurement range:（1-100）MPa；（1-70）MPa；（1-60）MPa；（1-40）MPa；（1-25）MPa。

Accuracy class:

Pressure: 0.005 class, 0.01 class, 0.02 class.

Current:(0～22)mA, 0.02 class.

Voltage:(0～5.5)V, 0.02 class.

Working medium:Compressed nitrogen.

Equipped with gas-liquid separation system to ensure the calibration gas is oil-free and maintenance-free;

Piston effective area: (1-25) MPa, piston effective area: 0.2cm2;(1-100) MPa; (1-70) MPa; (1-60) MPa; (1-40) MPa; piston effective area:0.1cm2, experimental standard deviation complies withJJG59-2022the provisions of Table 2 of the national metrological verification regulation "Liquid Piston Pressure Gauge";

Special weight mass allowable error:Complies withJJG59-2022the provisions of Table 3 of the national metrological verification regulation for liquid piston pressure gauges;

Piston rotation duration:CompliantJJG59-2022Compliant with the provisions of Table 5 of the national metrological verification regulation for liquid piston pressure gauges;

Piston descent speed:CompliantJJG59-2022Provisions of Table 6 of the National Metrological Verification Regulation for Liquid Piston Pressure Gauges;

Sealing performance:Complies withJJG59-2022Provisions of Table 8 of the National Metrological Verification Regulation for Liquid Piston Pressure Gauges;

Piston displacement/resolution:±5mm/0.1mm。

Piston speed: speed control30rpm。

Piston temperature measurement:15℃～25℃, resolution0.1℃。

4.3, Others

24V Power output: 2-4 channels.

Current and voltage channels: 2-4 channels, convenient for calibrating pressure transmitters.

Weight material and density: 304 stainless steel / (8000±50) kg/m³。

Piston rod piston cylinder material: tungsten carbide; piston barrel outer diameter:22mm, matching length:30mmor40mm. The longer, the more stable.

Weight: excluding weights100kg。

Chassis dimensions: 526*459*215 (width*depth*height).

Can connect to TMMS-2000 software, automatically print verification reports.

Has an operation video interface, can watch all operation videos.

5. Performance Features

Complies withJJG59-2022"Liquid Piston Pressure Gauge",JJG99-2006"Weights" national metrological verification regulations.

Weight loading method: fully automatic weight loading. Push pin selects cylindrical weights, weight shaft rotation selects block weights, three-axis weights are automatically loaded.

Weight rotation method:Automatically controlled motor drives, solenoid valve controls three-point clamping system. Or use a lever to drive, with a lever the failure rate is lower.

Piston suspension control: during measurement, the rotating motor is disengaged, the piston rotates freely and remains suspended. If a lever is selected, the lever disengages instantly after impact, maintaining suspension, and rotation is more stable.

Pressurization method: built-in dedicated pressure source, fully automatic pressurization: the motor drives the large pressure regulator for rapid pressure increase and decrease, and the small pressure regulator for fine adjustment.

Fully automatic loading and unloading of weights: the weights not placed on the hanging basket and the weights placed on the hanging basket rotate synchronously, and the weights are loaded at synchronous speed. The weight loading process has no wear, good stability, and fast pressurization speed.

Adopts a wear-free anti-rod-breakage piston system, which uses a rolling method at the limit position, and the piston disc has no wear.

Can measure and display in real time: pressure, input current, temperature, piston position, descent speed, and weight rotation speed.

Digital terminal monitoring parameters: touch screen operation, displaying temperature, current pressure, piston position, weight rotation speed, weight mass, and descent speed and other information.

Verification results: can be queried on the touch screen, and can also be exported via USB drive.

Can be connected viaRS232to host computer software TMMS-2000, fully automatic verification of pressure transmitters, digital pressure gauges, and pressure gauges, automatically recording results and printing reports.

Communication method: RS232。

6. Operation mode

Pressure controller operation mode: step operation according to preset step size.

Fully automatic verification of pressure transmitter mode: 5 verification points preset.

Fully automatic calibration digital pressure gauge mode: 10 calibration points preset.

Fully automatic calibration precision pressure gauge mode: calibration points automatically set based on range.

Watch operation video mode: can view all operation demonstration videos.