Application Scenarios
HollySys YQHB (N) All Stainless Steel Safety Pressure Gauge designed for use in harsh and corrosive environments, capable of measuring non-viscous, non-crystallizing, and slightly corrosive gas and liquid media. A safety disc is incorporated into the casing to safeguard the observation surface. Additionally, the rear is equipped with a pressure relief back cover to mitigate internal pressure resulting from the rupture of overloaded elastic elements, thereby enhancing the safety of personnel and equipment. This product is primarily utilized in industries such as petroleum, chemical, metallurgy, power generation, food, pharmaceuticals, environmental protection, machinery, and shipbuilding.
Technical Specifications
| Nominal diameter |
Φ63 mm, Φ100 mm, Φ160 mm |
| Accuracy level |
Φ63 |
Class 2.5 |
| Φ100, Φ160 |
Class 1.0, Class 1.6 |
| Measuring range |
-0.1 to 0 to 0.06...60 MPa (or equivalent pressure and vacuum range) |
| Overpressure capacity |
Full scale × 130% |
| Ambient temperature |
-40ºC to 70ºC |
| Media temperature |
-40ºC to 100ºC, When the ambient temperature deviates from the standard range of 20°C ± 5°C, the indication error shall not exceed 0.04% /°C |
| Process connection |
Φ63 |
M14 × 1.5, 1/4"NPT |
| Φ100, Φ160 |
M20 × 1.5, 1/2"NPT (other connection types are available upon request) |
| Sensing element |
<10 MPa |
C shape tube |
| ≥ 10 MPa |
spiral tube |
| Wetted material |
316L (Monel optional) |
| Case material |
316L, 304SS (can be customized by user) |
| Instrument pointer |
Aluminum alloy, black |
| Instrument dial |
Aluminum alloy, white background with black lettering |
| Sealing material |
Silicon rubber |
| Window material |
Safety glass |
| Protection level |
IP65, IP66 |
Options
· Diaphragm chemical seal
· Dual range dial
· Instrument filling liquid (glycerin, silicone oil, fluorine oil, etc.)
· Heat sink (can accommodate higher media temperatures)
Dimension Drawings
| Diameter (mm) / Size (mm) |
D1 |
D2 |
a |
b |
H |
| Φ63 |
63 |
63 |
40 |
14 |
88 |
| Φ100 |
101 |
100 |
60 |
17 |
134 |
| Φ160 |
161 |
160 |
69 |
19 |
204 |
Model Code
| YQHB |
All stainless steel safety pressure gauge |
| Liquid filled |
N |
Anti-vibration |
| Non |
Common type |
| Nominal diameter |
063 |
Φ63 mm |
| 100 |
Φ100 mm |
| 160 |
Φ160 mm |
| Mounting type |
A0 |
Radial mounting, flangeless |
| AT |
Radial mounting, front side |
| Case type |
531 |
304SS welded integral type |
| 631 |
316L welded integral type |
| T |
More optional materials |
| Measuring range |
Refer to attached list 1 for range code |
| Connection type |
Refer to attached list 2 for threaded code |
| Additional options |
Refer to attached list 3 for additional options |
Attached List 1 - Range Code Table
| Code |
M MPa |
| M003 |
0.01 |
| M004 |
0.025 |
| M006 |
0.02 |
| M007 |
0.03 |
| M010 |
0.04 |
| M015 |
0.06 |
| M020 |
0.07 |
| M030 |
0.08 |
| M039 |
0.1 |
| M040 |
0.15 |
| M050 |
0.16 |
| M060 |
0.2 |
| M070 |
0.25 |
| M075 |
0.3 |
| M080 |
0.35 |
| M090 |
0.4 |
| M100 |
0.5 |
| M120 |
0.6 |
| M130 |
1.5 |
| M140 |
1.6 |
| M150 |
2 |
| M160 |
2.5 |
| M170 |
3 |
| M180 |
4 |
| M190 |
5 |
| M200 |
6 |
| M220 |
10 |
| M229 |
15 |
| M230 |
16 |
| M235 |
20 |
| M240 |
25 |
| M250 |
30 |
| M260 |
35 |
| M270 |
40 |
| M280 |
60 |
| M290 |
100 |
| M330 |
160 |
| M350 |
200 |
| M352 |
250 |
| M360 |
400 |
| M365 |
600 |
| M370 |
1,000 |
| M500 |
-0.1 to 0 |
| M510 |
-0.1 to 0.06 |
| M515 |
-0.1 to 0.1 |
| M520 |
-0.1 to 0.15 |
| M522 |
-0.1 to 0.2 |
| M530 |
-0.1 to 0.3 |
| M535 |
-0.1 to 0.4 |
| M540 |
-0.1 to 0.5 |
| M550 |
-0.1 to 0.9 |
| M560 |
-0.1 to 1.5 |
| M570 |
-0.1 to 2.4 |
| Code |
K kpa |
| K005 |
0.25 |
| K007 |
0.5 |
| K010 |
1 |
| K015 |
1.5 |
| K020 |
1.6 |
| K030 |
2 |
| K040 |
2.5 |
| K050 |
3 |
| K060 |
4 |
| K070 |
5 |
| K080 |
6 |
| K090 |
10 |
| K100 |
15 |
| K110 |
16 |
| K120 |
20 |
| K130 |
25 |
| K140 |
30 |
| K150 |
40 |
| K160 |
50 |
| K170 |
60 |
| K200 |
100 |
| K201 |
160 |
| K202 |
200 |
| K203 |
250 |
| K204 |
300 |
| K205 |
400 |
| K206 |
600 |
| K207 |
1,000 |
| K208 |
1,600 |
| K209 |
2,000 |
| K210 |
2,500 |
| K220 |
4,000 |
| K230 |
6,000 |
| K250 |
10,000 |
| K274 |
15,000 |
| K280 |
16,000 |
| K300 |
20,000 |
| K325 |
25,000 |
| K330 |
30,000 |
| K350 |
40,000 |
| K352 |
60,000 |
| K500 |
-0.25 |
| K505 |
-0.4 |
| K510 |
-0.5 |
| K515 |
-0.6 |
| K520 |
-1 |
| K524 |
-1.6 |
| K530 |
-2 |
| K540 |
-2.5 |
| K550 |
-3 |
| K560 |
-4 |
| K570 |
-5 |
| K580 |
-6 |
| K585 |
-8 |
| K590 |
-10 |
| K600 |
-15 |
| K610 |
-16 |
| K620 |
-20 |
| K630 |
-25 |
| K640 |
-30 |
| K650 |
-40 |
| K660 |
-50 |
| K670 |
-60 |
| K680 |
-100 |
| K720 |
-0.1 to 0.15 |
| K730 |
-0.25 to 0.25 |
| K738 |
-0.3 to 0.1 |
| K745 |
-0.4 to 0.6 |
| K758 |
-0.5 to 20 |
| K775 |
-1 to 2 |
| K780 |
-1 to 3 |
| K782 |
-1 to 5 |
| K784 |
-1 to 9 |
| K800 |
-1 to 1 |
| K810 |
-2 to 2 |
| K820 |
-3 to 3 |
| K825 |
-4 to 6 |
| K830 |
-5 to 5 |
| K835 |
-5 to 10 |
| K836 |
-5 to 15 |
| K837 |
-5 to 25 |
| K840 |
-10 to 10 |
| K846 |
-15 to 15 |
| K850 |
-20 to 20 |
| K851 |
-20 to 30 |
| K855 |
-25 to 25 |
| K860 |
-30 to 30 |
| K865 |
-40 to 60 |
| K870 |
-50 to 50 |
| K878 |
-100 to 60 |
| K880 |
-100 to 100 |
| K881 |
-100 to 150 |
| K882 |
-100 to 160 |
| K884 |
-100 to 200 |
| K886 |
-100 to 240 |
| K890 |
-100 to 300 |
| K893 |
-100 to 400 |
| K895 |
-100 to 500 |
| K900 |
-100 to 900 |
| K920 |
-10 to 50 |
| K921 |
-10 to 60 |
| K923 |
-10 to 90 |
| Code |
G Kgf/cm |
| G001 |
0.1 |
| G004 |
0.16 |
| G006 |
0.25 |
| G008 |
0.4 |
| G010 |
0.6 |
| G020 |
1 |
| G040 |
1.6 |
| G050 |
2 |
| G060 |
2.5 |
| G070 |
3 |
| G080 |
3.5 |
| G090 |
4 |
| G100 |
5 |
| G110 |
6 |
| G130 |
10 |
| G150 |
16 |
| G160 |
20 |
| G170 |
25 |
| G180 |
30 |
| G190 |
35 |
| G200 |
40 |
| G210 |
50 |
| G220 |
60 |
| G230 |
70 |
| G240 |
100 |
| G260 |
160 |
| G270 |
200 |
| G280 |
250 |
| G300 |
350 |
| G456 |
1,600 |
| G500 |
-1 to 0 |
| G510 |
-1 to 0.6 |
| G515 |
-1 to 1 |
| G520 |
-1 to 1.5 |
| G530 |
-1 to 3 |
| G540 |
-1 to 5 |
| G550 |
-1 to 9 |
| G560 |
-1 to 15 |
| G570 |
-1 to 24 |
| Code |
B bar |
| B001 |
0.1 |
| B005 |
0.16 |
| B007 |
0.25 |
| B008 |
0.4 |
| B009 |
0.5 |
| B010 |
0.6 |
| B020 |
1 |
| B030 |
1.6 |
| B035 |
2 |
| B040 |
2.5 |
| B050 |
4 |
| B051 |
5 |
| B060 |
6 |
| B070 |
7 |
| B080 |
8 |
| B090 |
10 |
| B110 |
15 |
| B130 |
20 |
| B140 |
25 |
| B145 |
30 |
| B150 |
40 |
| B155 |
50 |
| B160 |
60 |
| B161 |
70 |
| B170 |
100 |
| B180 |
150 |
| B190 |
160 |
| B200 |
200 |
| B210 |
250 |
| B214 |
300 |
| B217 |
350 |
| B220 |
400 |
| B230 |
600 |
| B270 |
1000 |
| B274 |
1400 |
| B360 |
1600 |
| B380 |
2500 |
| B500 |
-1 to 0 |
| B510 |
-1 to 1 |
| B515 |
-1 to 0.6 |
| B520 |
-1 to 1.5 |
| B530 |
-1 to 3 |
| B535 |
-1 to 4 |
| B540 |
-1 to 5 |
| B545 |
-1 to 6 |
| B550 |
-1 to 7 |
| B560 |
-1 to 9 |
| B600 |
-1 to 15 |
| Code |
P psi |
| P010 |
3 |
| P15 |
4 |
| P020 |
5 |
| P021 |
6 |
| P022 |
7 |
| P030 |
10 |
| P040 |
15 |
| P041 |
16 |
| P043 |
20 |
| P045 |
25 |
| P050 |
30 |
| P051 |
35 |
| P052 |
36 |
| P056 |
40 |
| P058 |
50 |
| P060 |
60 |
| P063 |
70 |
| P064 |
75 |
| P065 |
80 |
| P066 |
87 |
| P068 |
90 |
| P070 |
100 |
| P072 |
115 |
| P073 |
120 |
| P074 |
140 |
| P075 |
145 |
| P079 |
150 |
| P080 |
160 |
| P090 |
200 |
| P092 |
220 |
| P093 |
230 |
| P099 |
290 |
| P100 |
300 |
| P093 |
230 |
| P099 |
290 |
| P100 |
300 |
| P105 |
340 |
| P109 |
350 |
| P110 |
400 |
| P124 |
800 |
| P126 |
850 |
| P127 |
870 |
| P128 |
900 |
| P130 |
1,000 |
| P131 |
1,150 |
| P132 |
1,200 |
| P135 |
1,400 |
| P140 |
1,500 |
| P145 |
1,600 |
| P150 |
2,000 |
| P153 |
2,250 |
| P154 |
2,300 |
| P155 |
2,500 |
| P160 |
3,000 |
| P165 |
3,500 |
| P170 |
4,000 |
| P175 |
4,500 |
| P180 |
5,000 |
| P190 |
6,000 |
| P195 |
7,000 |
| P200 |
7,500 |
| P203 |
8,000 |
| P206 |
8,500 |
| P207 |
8,700 |
| P208 |
9,000 |
| P210 |
10,000 |
| P215 |
14,000 |
| P220 |
15,000 |
| P230 |
20,000 |
| P370 |
-0.5 to 6 |
| P500 |
-15 |
| P522 |
-10 to 10 |
| P524 |
-10- to 20 |
| P590 |
-15 to 100 |
| P595 |
-15 to 150 |
| P600 |
-14 to 50 |
| P620 |
-15 to 15 |
| P630 |
-15 to 30 |
| P640 |
-15 to 60 |
| P800 |
-15 to 400 |
| P820 |
-15 to 150 |
| P845 |
-15 to 400 |
| Code |
W mmH20 |
| W010 |
100 |
| W034 |
150 |
| W035 |
160 |
| W039 |
200 |
| W040 |
250 |
| W045 |
300 |
| W047 |
380 |
| W050 |
400 |
| W060 |
500 |
| W070 |
600 |
| W075 |
762 |
| W080 |
1,000 |
| W085 |
1,500 |
| W090 |
1,600 |
| W100 |
2,000 |
| W110 |
2,500 |
| W120 |
4,000 |
| W130 |
5,000 |
| W140 |
6,000 |
| W148 |
8,000 |
| W560 |
-500 |
| W570 |
-600 |
| W575 |
-760 |
| W580 |
-1,000 |
| W590 |
-1,600 |
| W600 |
-2,000 |
| W610 |
-2,500 |
| W620 |
-4,000 |
| W630 |
-5,000 |
| W640 |
-6,000 |
| W758 |
-25 to 25 |
| W780 |
-40 to 20 |
| W800 |
-50 to 50 |
| W810 |
-100 to 100 |
| W811 |
-100 to 150 |
| W812 |
-100 to 200 |
| W820 |
125 to 125 |
| W825 |
-150 to 150 |
| W830 |
-150 to 250 |
| W840 |
-200 to 200 |
Attached List 2 - Threaded Code Table
| M10-M10X1 |
| M14-M14X1.5 |
| M20-M20X1.5 |
| G18-G1/8" |
| G12-G1/2" |
| G10-G1" |
| G14-G1/4" |
| G34-G3/4" |
| G38-G3/8" |
| R18-ZG1/8" |
| R12-ZG1/2" |
| R14-ZG1/4" |
| R34-ZG3/4" |
| R38-ZG3/8" |
| Z18-NPT1/8" |
| Z12-NPTI/2" |
| Z14-NPT1/4" |
| Z34-NPT3/4" |
| Z38-NPT3/8" |
V20-1/4VCR(M)
V30-1/4VCR(F) |
| U10-9/16-18UNF |
| FOO-Tuyere connection |
| KO0-Fast connection |
| K15-1.5"Fast connection |
| K20-2"Fast connection |
| K25-2.5Fast connection |
| TOO-special connection |
| (N)-female thread |
Attached List 3 - Option Table
| Materials |
| SBA=Common glass |
SBB=organic glass |
SBD=safety double glass |
| SBE=Polycarbonate glass |
SYA=Glycerin |
SYB= silicone oil |
| SYF=fluorocarbon oil |
SKA=Carbon steel |
SKB=SUS304 |
| SKC=SUS316 |
SHR=Gold |
SNR=Monel |
| SSF=PTFE |
STI=Ti |
SDA=Ta |
| Processing Technic |
| GHA=4% silver soldering |
GHB=40% silver soldering of stainless steel pipe |
GHC= Argon arc welding of stainless steel |
| GKD=Plating process |
GKB=Polished finish |
GKA=Stainless steel color |
| GDQ=Plasma cleaning |
|
|
| Standard |
| BAA= Class 0.25 |
BBA=Class 0.4 |
BCA=Class 0.5 |
| BDA=Class 1.0 |
BEA=Class 1.6 |
BIA=Ingress Protection IP45 |
| BIB=Ingress Protection IP54 |
BIC=Ingress Protection IP65 |
|
| Function |
| PJY=Memory device |
PDW= positioning device |
PGX=Builtin overvoltage protection |
| PHD=Buffer screw |
POO=Abolishzeroing device |
PTL=Install eroing device |
| PGO=Abolish overpressure protection |
|
|
| Accessory |
| FYX=Electrical interface cable |
FAA=match safety barrier |
FFA=Equipped with three valve manifold |
| FHY= protective clothing |
FFB= Equipped with five-valve manifold |
FWP=withthe stainless steel nameplate |
| FGB=High pressure protector |
|
|
| Special Requirements |
| TPB= special dial |
TYO=Oxygen dedicated |
TYH=Hydrogen dedicated |
| TYA=Ammonia dedicated |
TYY=Acetylene dedicated |
TNR=Heat-resisting |
| TFA=F12 Refrigeration dedicated |
TFB=F22 Refrigeration dedicated |
TCY=Marine dedicated |
| TTC=Case with back blow-out hole |
TDG=Built-inlightin the case |
|
Packaging & Delivery
| Category |
Product Size |
International Commercial Terms (Incoterms) |
Terms of Payment |
Nearest Port |
| YQHB (N) All Stainless Steel Safety Pressure Gauge |
50 cm*58 cm*30 cm |
CIF, CFR, DAP |
LC, T/T, D/P |
Shanghai, Guangzhou, Tianjin |
Company Profile
Audited Supplier 
){kind=link}