| The compact 131.11 Bourdon tube pressure gauge is constructed with a stainless steel housing and liquid-contact components. Its modular design allows for various process connections, dial sizes, and measurement ranges, making it widely applicable across industrial sectors. This instrument is frequently used as a fault alarm indicator for gas cylinders. With its compact design and moderate procurement cost, the pressure gauge is also suitable for mechanical engineering and equipment construction. Due to the use of high-quality stainless steel materials and robust construction, the instrument is compatible with both liquid and gaseous media, as well as corrosive environments. To facilitate installation on control panels, the pressure gauge can be equipped with a surface-mount flange, triangular bezel, or mounting bracket. |
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| WIKA Pressure Products-Bourdon tube pressure gauge 131.11 |
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| 131.11 Special features |
 Case and wetted parts from stainless steel
Version per EN 837-1 or ASME B40.100
Cost-effective and reliable
Scale ranges from 0 ... 1 to 0 … 1,000 bar [0 ... 15 to 0 ... 15,000 psi] |
| 131.11 Description |
| Nominal size (NS) |
Operating conditions |
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1 ½", 2" |
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Ambient temperature：-40 ... +60 °C [-40 ... +140 °F]
Medium temperature：-40 ... +100 °C [-40 ... +212 °F] |
| Accuracy class |
Temperature error |
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EN 837-1
■Class 2.5
■Class 1.6
ASME B40.100
■ ±3 % of measuring span (grade B)
■ ±2 % of measuring span (grade A) |
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On deviation from the reference conditions at the measuring system: ≤ ±0.4 % per 10 °C [≤ ±0.4 % per 18 °F] of full scale value |
| Special design feature |
Ingress protection per IEC/EN 60529 |
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■Oil- and grease-free
■ For oxygen, oil- and grease-free 1)
■ Silicone-free
■ Version for ammonia plants
With temperature scale for refrigerant R 717 (NH3) in °C
Scale range: -1 ... 0 ... 15 bar or -1 ... 0 ... 26 bar |
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IP 54， Compliant with EN 60529/lEC 529 standards |
| Pressure limitation |
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Steady: 3/4 x full scale value
Fluctuating: 2/3 x full scale value
Short time: Full scale value |
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| 131.11 Selection Table |
| 131.11 |
050mm |
-30 inHg ... +160psi |
1/4” MNPT |
LM |
Option |
Pressure gauge type |
Dial Size |
Measurement Range
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Process connection |
Connection location |
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040 mm [1 ½"]
050 mm [2"]
063 mm [2 ½"] |
-30 inHg ... 0psi
-30 inHg ... +100psi
-30 inHg ... +15psi
-30 inHg ... +160psi
-30 inHg ... +30psi
-30 inHg ... +200psi
-30 inHg ... +60psi
-30 inHg ... +300psi |
EN 837-1
G ¼ B, Male thread
G ⅛ B, Male thread
ANSI/BI1.20.1
¼ NPT, Male thread
⅛ NPT, Male thread
ISO 7
R ¼, Male thread
R ⅛, Male thread |
LM-Lower mount(radial)
CBM-Centre back mount |
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For more range, please refer to the manual data。 |
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