The gauge utilizes a indirectly measuring technique suitable for measuring pressure of highly stickiness degree, easily crystallize, corrosive hot liquid, gas or pellet shaped solid. It is made from diversiform materials to withstand different corrosive medium.
The gauge is utilized for chemical, chemical fiber, synthetic fibers, petrol, dye, making alkali industry.

Serial code:

Note: SCM: separator connecting material; DM: diaphragm material; SCS: separator connecting style; CS: connector style; ACSS: acid-proof stainless steel; MSS: molybdenum stainless steel.

Specification：

Accuracy：±1.6%,±2.5%
The material of diaphragm: 0Crl 8Ni 12Mo2(316), Hastelloy C (H276c), Monel alloy (Cu30Ni70), Tantalum (Ta) alloy, Fluorine plastic (F4).
The material of separator: Acid-proof Stainless Steel, Molybdenum Stainless Steel, and Fluorine plastic.
The material of sealing washer: Butyl rubber, Fluorine plastic.
Filling liquid: silicon oil, vegetable oil.
Design： JB/T8624-1997

Structure principle：
The diaphragm has been out of shape on the medium pressure. Sealing liquid crushed, which forms pressure correspond to P. The pressure be conducted to the gauge, show the pressure of the medium pressure.

Temperature:
Because of sealing liquid's hot expansion and diaphragm stiffness concern in temperature, there is an error (0.1%/℃) when the temperature deviates from20℃±5℃.

liquid pressure：

The gauge with soft pipe installed, if the gauge and the suffer pressure part are not at the same height, there will be a pressure difference ΔP, ΔP=sealing liquid density × difference between gauge and suffer pressure part.

Cauterization-proof：

? The gauge contains environment and medium's cauterization-proof quality. It adopts separator, diaphragm, and sealing washer's material from operational conditions.

Separator size：
? Screw thread：（ML）

Scale range MPa	Screw thread
Scale range MPa	D	C	M
0.1～0.4	118	25	20×1.5 (G3/8 in) (G1/2 in) (NPT1/2 in)
0.6～16	87	25
25～40	92	27

? "工"style flange （MG）

Scale range MPa	Pipe classics DN	Flange						Screw L
Scale range MPa	Pipe classics DN	D	K	d	B	c	f	Screw L
0.1～1.6	20	105	75	58	18	16	2	14
0.1～1.6	25	115	85	68	25	16	2	14
2.5～4	20	105	75	58	18	16	2	14
2.5～4	25	115	85	68	25	16	2	14

Flange Connecting : （MF）

Scale range MPa	Pipe classics DN	Flange						Screw
Scale range MPa	Pipe classics DN	D	K	d	B	c	f	L
0.16～1.6	32	140	100	78	31	16	2	18
	40	150	110	88	38	16	3	18
	50	165	125	102	49	18	3	18
2.5,4.0	32	140	100	78	31	18	2	18
	40	150	110	88	38	18	3	18
	50	165	125	102	49	20	3	18
6.3	32	155	110	78	31	24	2	22
	40	170	125	88	37	24	3	22
	50	180	135	102	47	26	3	22
10	32	155	110	78	31	24	2	22
	40	170	125	88	37	26	3	22
	50	195	145	102	45	28	3	26

Design: HG, GB, JIS & ANSI and so on.
? A bolt （MZ） A nut （MN）
　

Cassette MK
Diaphragm and clamp materials:316
sealing washer materials: silicon rubber

All plastics "工" style flange： MS
Materials： PTFE

HG20594-97

Scale range MPa	Pipe classics DN	Flange
Scale range MPa	Pipe classics DN	D	K	d	L
0.16～1.6	20	90	65	48	11
0.16～1.6	25	100	75	58	11
1.0～2.5	20	105	75	56	14
1.0～2.5	25	115	85	65	14

Ordering：

The pressure gauge's operational environment has no corrosive gas.
Do not dismantle and change other equipment, to avoid filling liquid leaking out, to affect its qualities.
Please specify the equipment-gauge's name, model, scale range, accuracy and connector's style、 separator connection style.
Please provide a supply technical specification to facilitate the reliable production, and appropriate equipment.
In according with custom's necessary, we can also make diaphragm pressure gauge to fit imported equipment.
　