Warranty: | 1 Year |
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Measuring Range: | Medium-pressure Gauge |
Type: | General Pressure Gauge |
Samples: |
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Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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Payment Method: | |
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Initial Payment Full Payment |
Currency: | US$ |
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Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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diaphragm guage Working principle
The measured medium pressure P produced to diaphragm, and diaphragm appear deformation, compress pressure gauge sealing liquid, and generate P-DP pressure. If the rigid good enough, then DP is small. Then the measure pressure is similar to the measure medium pressure.seal liquid | pressure part temperature | density g/cm 3 |
coefficient expansion 1/°C |
Service |
High viscosity silicone oil | -10~200 °C | 1.07 | 0. 95X10 3 | high temperature |
low viscosity silicone oil | -30~100 °C | 0. 94 | 1.08X10- 3 | ordinary |
glycerin liquor | -5~100 °C | 1.27 | 0. 61X10 3 | food |
Plant Oil | -5~100 °C | 0. 93 | 1.03X10- 3 | food |
fluorocarbon oil | -30~150 °C | 1.93 | 0. 75X10- 3 | oxygen, hydrogen |
Corrosive fluid |
anti-corrosion material | |||||
tin-bronze (QSn6.5-0.4) |
SUS316 | (Ta) | Monel (Ni70Cu30) |
hastelloy (HG) |
PTFE (F4) |
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sulphuric (H2S04) | V | D | O | V | V | V |
Nitric (hno3) | X | V | O | X | V | V |
(HCL) | D | X | O | X | V | V |
Phosphoric (H3P04) | V | V | O | V | V | V |
acetic (CH3C00H) | V | V | O | V | O | V |
NaOH | D | O | D | O | O | V |
(Na2CO3) | O | O | O | O | V | V |
NaHCO3 | V | O | O | O | O | V |
CL2 | dry:V wet:X | dry:V wet: X | O | dry:V wet: X | V | V |
Br2 | dry: D wet:X | dry:X wet: D | O | dry:O wet: X | O | V |
NH3 | X | V | X | X | O | V |
Sea water (30%NaCL) | V | V | O | O | O | V |
Instruction: OBest Dconditional use V_usable X_ unusable |
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