Low pressure alarm mechanical switch
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This post was last edited by yu0521 on 2017-2-6 at 09:41. The user requested a low-pressure alarm switch to be installed on the air storage tank (at 1.0 Mpa); the alarm is supposed to sound when the pressure drops by 0.4 Mpa below the set value, and the pressure level should be adjustable. It needs to be a non-electric mechanical device. However, after extensive inquiries by the procurement department, no suitable option was found, as all available switches are designed for high-pressure alarms, triggering when the pressure exceeds the set value. I communicated with the user again, and they said that they had this device in the past and even sent us 2 pictures; when asked specifically about the brand and model, the user said they didn’t have any information on that. I’m reaching out to the friends on Haichuan to help me find out what this thing is called exactly, where it can be purchased, so that I can buy it. Thank you! ! ! Is a high-pressure alarm essentially just a low-pressure alarm in reverse?
Take a look to see if this is appropriate: http://wenku.baidu.com/link?url=t6I5vCq0IjV0krYDoqcCNmLgkUGd0PVAUiYez1lTZBEX7hg8vjcSFnOvzSbs09EtHE_ZAu5vxsUpCfTVBI-7hvRn1yp8KwiaGGbtfTp6kQqSUC6E6hPO19BMme-wvQ3r
High voltage or low voltage doesn’t matter; as long as it can provide normally open and normally closed outputs
Thank you, the user requested a mechanical version without electricity.
Thank you; the user wants a mechanical version that operates without electricity, similar to the whistle alarm that goes off when water in a kettle boils.
Thank you all. After thorough investigation by our leaders and friends, it seems that this is an air respirator alarm whistle.
I asked about the alarm whistle of the air respirator; it emits a warning sound when the pressure in the tank drops to 4-6 MPa, so it’s not useful. The pressure is too high and cannot be adjusted. :'(:'(:'(