Liquefied Petroleum Gas Liquid Level Gauge

Liquefied Petroleum Gas Liquid Level Gauge

Jiangsu Aoke Instrument Co., Ltd

Sales Hotline:/Manager Bai

Liquefied Petroleum Gas Liquid Level GaugeIt is a product that the company introduces and absorbs similar foreign products, and improves its research and development production. The series of products can achieve high sealing, leak prevention, and safe and reliable measurement of liquid level under high temperature, high pressure, high viscosity, and strong corrosive conditions. The entire measurement process has no blind spots, eye-catching display, intuitive reading, and a large measurement range. Equipped with liquid level alarm and control switch, it can realize upper and lower limit alarm and control of liquid level or boundary. Paired with LB type liquid level transmitter, it can convert liquid level and boundary signals into two-wire 4-20mADC standard signals, realizing remote detection, indication, recording, and control. The series of products are widely used for liquid level measurement and control in various industries such as power, petroleum, chemical, metallurgy, environmental protection, shipbuilding, construction, and food production processes.

Anti corrosion magnetic flap level gauge produced by Jiangsu Aoke Instrument Co., Ltd(Liquefied Petroleum Gas Liquid Level Gauge)The most significant feature of is the complete isolation between the liquid medium and the indicator, making it very safe, reliable, and durable in any situation. Various models of level gauges are equipped with level alarms and control switches, which can achieve upper and lower limit alarm, control, or interlocking of the liquid level or boundary. When equipped with static pressure level transmitters or dry spring resistance level transmitters, the liquid level and boundary signals can be converted into two-wire 4-20mADC standard signals, realizing remote indication, detection, recording, and control. Suitable for liquid level measurement in corrosive media and high operating temperatures, with reliable structure and long service life. It is the most suitable choice for measuring the liquid level of highly corrosive media such as QIN fluorine acid. Tailored for customers with low temperature and pressure requirements, our PP material level gauge can be used.

Users can use remote transmitters according to engineering needs, which can achieve local digital display and output standard remote transmission electrical signals of 4-20mA to meet the needs of recording instruments or industrial process control. It can also be used in conjunction with magnetic control switches or proximity switches to monitor liquid level alarms or control inlet and outlet equipment.

1、 Liquefied Petroleum Gas Liquid Level GaugeDifference in lining selection:

The stainless steel lined anti-corrosion magnetic flap level gauge adopts a stainless steel body lined with polypropylene (PP) and polytetrafluoroethylene (PTFE) technology, which has high structural strength and corrosion resistance, and can be applied to acidic liquids such as hydrochloric acid, alkaline liquids, and organic solvents. But it is not suitable for measuring concentrated nitric acid, chlorine containing solvents, aromatic agents, aliphatic and other medium liquids. There are two types of side mounted anti-corrosion magnetic flap level gauges with stainless steel main body lined with polytetrafluoroethylene (PTFE) and stainless steel lined with polypropylene (PP), which are suitable for measuring corrosive media.
The side mounted lined magnetic flap level gauge (PTFE) is suitable for measuring liquid levels in corrosive media and high operating temperatures. It adopts advanced stainless steel lined PTFE stretching and flanging technology, with reliable structure and long service life. It is the most suitable choice for measuring the liquid level of highly corrosive media such as acid and alkali.

The side mounted lined magnetic flap level gauge (PP) is suitable for measuring inorganic corrosive liquids such as hydrochloric acid and dilute sulfuric acid. Due to the use of imported high-strength materials that can be close to metals, especially the unique insulation properties of PPR, this product is suitable for outdoor water tank level measurement and will not freeze inside in winter But it is not as good in temperature and pressure resistance as PTFE lining, and this product has a higher cost-effectiveness when the temperature and pressure are lower.

IIliquefied petroleum gaslevel gaugeFeatures:
1. Using a float as the measuring element and a magnetic steel driven flip column display, no energy is required.
2. Equipped with upper and lower limit switch outputs, it can achieve remote alarm and limit control.
3. Equipped with a transmitter, remote liquid level indication, detection, and control can be achieved.

IIIliquefied petroleum gasInstallation and maintenance of liquid level gauge
1. The installation must be vertical to ensure that the floating ball component can move freely up and down inside the main tube.
2. No magnetic conductors are allowed to approach the main body, otherwise it will directly affect the correct operation of the liquid level gauge.
3. After installation, it is necessary to calibrate the flip column guide with magnetic steel to display red below zero position and white above zero position.
4. When the liquid level gauge is put into operation, the valve of the lower drainage pipe should be opened first to allow the liquid medium to smoothly enter the main pipe, avoiding the liquid medium from rapidly rising with the floating ball component, which may cause failure and disorderly flipping of the column. If this phenomenon occurs, it can be recalibrated with magnetic steel after the liquid level stabilizes.

4、 Basic technical parameters of liquefied petroleum gas level gauge:

1. Range: above 250mm;

2. Medium density: ≥ 0.4g/cm3;

3. Medium viscosity: ≤ 0.02Pa.S;

4. Working temperature: PP-40~80 ℃, PTFE -40~150 ℃;
5. Pressure rating: ≤ 32MPa;
6. Measurement accuracy: L=500~1000mm ≤ 1.5% FS, L>1000mm ≤ 1.0% FS;
7. Installation methods: side mounted, top mounted;
8. Protection level: IP65;
9. Explosion proof level: ib Ⅱ CT4 (intrinsic safety type), d Ⅱ BT4 (explosion-proof type);
10. Transmission mode: 4-20mA or switch quantity;
11. Wetting material: PP, PTFE;

12. Float material: 316L, PVC/UPVC/CPVC/PTFE/titanium, etc.

Five,liquefied petroleum gasApplication and Scope of Liquid Level Gauge:

Six,ethyl acetatelevel gaugeModel and Description:

Installation, adjustment, and use of liquefied petroleum gas level gauges

After the product arrives, the user should first check the packaging quality of the product. The packaging box should be intact and undamaged, with clear markings. If there is obvious damage to the packaging, the storage and transportation department should promptly investigate the problem and responsibility, and notify our company. If there are no quality issues with the packaging, the product can be unpacked and removed. If necessary, simple testing of the instrument can be carried out;
Remove the float chamber flange and install the float in the upward direction according to the arrow (at this time, the magnetic steel inside the float is in its upper half) into the float chamber. Reinstall the float chamber flange, pay attention to installing the sealing gasket and tightening it evenly. Block the lower flange and slowly inject water into the float chamber through the upper connecting flange. The indicator should have a liquid level indication and be sensitive without jumping. The instrument is normal. If the indicator is a tracking indicator, a spare tool magnetic steel can be used to lift the indicator float and couple it with the magnetic float in the float chamber (float indication type), or use magnetic steel to attract the indicator from bottom to top to make its knowledge correct.
When installing the instrument on the equipment, a sealing gasket should be installed on the flange joint surface, and then the instrument should be fixed to the user's flange with bolts. When the instrument is installed on a pressure vessel, it should undergo pressure testing together with the vessel according to relevant regulations, that is, a water pressure test at 1.25 times the working pressure and an air tightness test at 1.05 times the working pressure. After confirming that there is no leakage, it can be put into use. (Note that when the experimental pressure exceeds 1.25 times the working pressure of the instrument, the float should be removed from the float chamber. After the water pressure test is qualified, the float should be installed in the float chamber for an air tightness test not exceeding 1.05 times the working pressure of the instrument.).
When the instrument is put into operation, the upper valve should be opened first, and then the lower valve should be slowly opened to allow the medium to slowly flow into the float chamber, to prevent the liquid level from rising too quickly, which may cause the indicator to fail to track and display or damage the float.
For instruments with liquid level transmitters (remote transmission of electrical signals), a spare tool magnetic steel should be used to attract the movement of the magnetic float in the float chamber, simulate changes in liquid level, and detect whether the liquid level transmitter is working properly. For explosion-proof instruments, it is not only necessary to detect the working state parameters of the transmitter, but also to detect the explosion-proof performance (such as the strength, coating, sealing, etc. of the explosion-proof shell).
The installation of top mounted instruments should first install the float rod component, move the float ball by hand, simulate liquid level changes, and the indicator should be able to operate normally. When installing the instrument, first insert the float rod assembly into the float through the instrument flange hole, and make the magnetic steel N-pole (sealing surface) on the float rod face the indicator. After encrypting the sealing gasket, align the long plate on the assembly with the long groove on the instrument flange end face, and then connect the two flanges.
High temperature and high pressure instruments:
a. According to the assembly drawing, install the table: place insulation gaskets between the small flanges, and install them with spare M12 bolts, nuts, and gaskets. Install copper pipes at the designated location, tighten the joints, and ensure no leakage.
b. When installing the instrument on the equipment, a sealing gasket should be installed on the flange joint surface, and then the instrument should be fixed to the predetermined flange of the user equipment interface with bolts.
c、 After the installation of the instrument is completed, open the valve to pressurize the instrument.AttentionCharge slowly! Wait for the pressure and temperature of the container and instrument chamber to stabilize before the instrument can be put into use.
● Level gauge equipped with level transmitter output:
a. When installing instruments with explosion-proof requirements, users must comply with the "Electrical Safety Regulations for Hazardous Areas of the People's Republic of China"; Repairs must be carried out in a safe place. The power must be cut off during installation and maintenance. After confirming that the power is disconnected, open the instrument junction box again. The grounding terminal on the junction box of the instrument must be connected to a reliable ground wire. During the adjustment and use process, attention should be paid to protecting the explosion-proof threaded joint surface on the instrument junction box, and there should be no scratches, collisions, or other damages.
b. After the on-site display part of the instrument is put into operation, connect the wiring of the transmitter of the liquid level transmitter output level gauge, cover the instrument junction box, and confirm the seal before powering on.
c. Observe the liquid level value of the digital display instrument. If the liquid level value of the output level gauge with a liquid level transmitter is inconsistent with the displayed liquid level value on site, you can loosen the hose clamp and adjust the upper and lower positions of the liquid level transmitter appropriately until they are consistent. Then tighten the throat clamp.
d. The alarm switch of the liquid level gauge with an alarm switch is a dry contact passive switch. Switches can generally be divided into several types: normally open, normally closed, and normally open self-locking. Mainly used for controlling low-power loads (relays, contactors, etc.).Note:The switch type and switch capacity shall be in accordance with the contract agreement.
The measurement zero point of anti-corrosion instruments is based on the actual position displayed by the indicator. The mechanical strength of anti-corrosion instruments made of PVC or other materials is relatively low, and external metal support should be added during installation to ensure safe use. During installation, attention should also be paid to evenly tightening the flange screws to avoid damage caused by uneven stress.
The working principle of the liquid level transmission part (electrical part) of the explosion-proof liquid level gauge is that it uses a magnetic float to act on a magnetic spring switch, causing a change in the resistance of the connected circuit, thereby enabling the sensor part to generate a resistance signal corresponding to the liquid level change. By using a signal converter, the resistance signal can be converted into a 4-20mA current signal.
The electronic components of this level gauge have almost no energy storage components such as capacitors and inductors. And the performance is stable. The explosion-proof box has good sealing performance.
The output terminals of the transmitter of the liquid level gauge are 1 terminal and 2 terminals, where the 1 terminal is negative and the 2 terminal is positive. The wire is connected from end 1 and end 2, and connected to other secondary level gauges. Pay attention to the polarity correspondence when connecting!
The working principle of the liquid level transmission part (electrical part) of the intrinsic safety level gauge is to use a magnetic float to act on a magnetic spring switch. The on/off of the magnetic spring switch causes a change in the resistance value of the circuit (the number of precision resistors connected to the system changes), which in turn allows the sensor part to generate a resistance signal corresponding to the liquid level change. By using a signal converter, the resistance signal can be converted into a 4-20mA current signal.

Jiangsu Aoke Instrument Co., Ltd
Contact: Bai Guangming
Sales phone number:
Address: Jinhu County Industrial Park, Jiangsu Province
After-sales service
1. Our company is responsible for free repair of products that have quality problems (not caused by human factors) within one year.
2. If there are any quality problems with our company's products during the warranty period, our company is responsible for free repair or replacement.
3. If the product is damaged due to improper use by the user during the warranty period, our company is responsible for repairing it and charging the cost of the damaged parts.
If the user requires on-site service from our company, we will arrive at the user's site in the shortest possible time.
5. The products sold by our company enjoy lifelong maintenance.

Aoke Reminder: The supply cycle is 1-2 working days, and special specifications need to be confirmed by phone consultation. Welcome to inquire! We will serve you wholeheartedly!