Negative pressure Glass tube level gauge
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What are the specific operating conditions for glass tube level gauges? Can negative pressure be used? What is the approximate level of negative pressure required? How much more pressure can’t be applied? Example: Can a glass tube level gauge be used at a pressure of -0.07 MPa? Can a glass tube level gauge be used at a pressure of 1 MPa?
The original HG5-227-80 standard issued by the Ministry of Chemical Industry specified: Measurement range (center distance between installations, L): 300, 500, 600, 800, 1000, 1200, 1400, 1700, 2000 mm. ● Operating pressure: ≤1.6 MPa. ● Material: carbon steel, stainless steel. ● Operating temperature: ≤200°C. ● Connection flange standard: HGJ46-91 PN1.6 DN20 raised face. For other flange standards such as JB/T, GB, ANSI, etc., please specify by the user. ●Heating steam pressure: ≤0.6MPa ● Steam jacket connection: G1/2" external thread ● Self-sealing pressure with steel ball: ≥0.2MPa
Does the glass tube level gauge mentioned by LZ refer to a glass tube level gauge? I humbly ask for your kind guidance.