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product description
Plate level gauge for boiler
Electric contact level gauge
Chemical level gauge
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Plate level gauge for boiler
                 
QJUGS series glass plate liquid level meter
QJUBA glass plate liquid level meter
(HG21589.1 ~ HG21591.2-95 HG5-1364 ~ 1370-80)
[Overview]
QJUBA glass plate liquid level gauge is the latest standard of the Ministry of Chemical Industry. It adopts three types: "transparent", "reflective" and "view mirror". After the improvement, the inlet and outlet ends of the liquid level meter can no longer be installed with other valves, and the intermediate indicator can be removed without stopping the furnace for cleaning, maintenance and replacement of the glass plate. That simplifies installation and saves costs, bringing great convenience to production and maintenance. According to the user's needs, a drain valve can be added to the lower part of the liquid level meter, so that it can be flushed and drained in time.

[Working principle and structural characteristics]
According to the principle of the connector, the liquid level of the medium in the container is guided to the external glass plate level meter; the actual height of the liquid level in the container is read through the transparent glass plate.
This product can also be made into a two-color display without light source, which uses the natural light source's folding and reflection characteristics to form a gas red liquid black display through color filter glass.
Valve stem packing uses flexible graphite pressure ring, which has good sealing performance, high temperature resistance and corrosion resistance. Steel balls are installed in the upper and lower valves of the instrument. When the glass plate is accidentally damaged, the steel balls automatically close the valve flow channel under the pressure of the medium in the container to prevent a large amount of medium from overflowing.
[Product mark]
Note 1: The C-flange sealing surface type is selected, and the pressure grades of 2.5MPa and 4.0MPa are 300 # flange and 6.3MPa # flange.
Note 2: The nominal pressure is normal pressure, which can be omitted and not marked.
Note 3: The sight glass type does not indicate the flange sealing surface type, center distance, and sewage outlet code three columns.
【The main technical parameters】
Nominal pressure: 1.6, 2.5, 4.0, 6.3MPa
Working temperature: -20 ℃ ~ 250
Nominal length (center distance L mm): 500 ~ 3000
Light transmission length mm: L-290, (view mirror type) 304
Width across the river mm: 14 (view mirror type) 18
Flange diameter DN mm: 20, 3/4 "
Type of sealing surface: RF, M
Sewage valve interface: M20 × 1.5
Tracing jacket pressure: 0.6MPa
Heat tracing jacket interface: Rc 1/4 "
Self-sealing pressure of steel ball: 0.3MPa

Relationship table between operating temperature and maximum allowable (non-impact) operating pressure
Use temperature ℃ 200 210 220 230 240 250
Transparent glass plate
Level gauge
Maximum allowed
(No impact)
Use pressure
MPa
6.3 6.1 5.9 5.7 5.5 5.4
Reflective glass plate
Level gauge
Maximum allowed (
No impact) make
Use pressure
MPa
4.0 - 3.8 3.7 - 3.6
【appendix】
liquid

surface

meter
HG21589.1 ~ HG2159.2-95 HG5-1364-1370-80 marking requirements
A (BC) T2.5-I (II) -550 ~ 1750V (P) A (B) T2.5-I (II) -500 ~ 1700
A (BC) T2.5-I (II) W-550 ~ 1750V (P) A (B) T2.5-I (II) -500 ~ 1700
A (BC) T6.3-I (II) -550 ~ 1750V (P) BT6.3-I (II) -500 ~ 1700
A (BC) T6.3-I (II) W-550 ~ 1750V (P) BT6.3-I (II) Z-500 ~ 1700
A (BC) R4.0-I (II) -550 ~ 1750V (P) BR4.0-I (II) -500 ~ 1700
A (BC) R4.0-I (II) W-550 ~ 1750V (P) BR4.0-I (II) Z-500 ~ 1700
SI (II, III) J R6-I (II, III)
SI (II, III) Q RI (II, III)
S0.6-I (II, III) Q
Note: Nominal length (center distance L mm)> 1750 can be designed and manufactured separately.

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Qidong Jinxin Instrument Factory Address: Jiulong Town, Qidong City, Jiangsu Province, China
Phone: 0513-83811688 Fax: 0513-83819800
Mobile phone: 13951339050 13806283821 E-mail: [email protected]
Liquid level gauge | Magnetic level gauge