09,18,2026 11 views
Recently, Huai'an Qingchuan Instrument Co., Ltd. has received orders for multiple pressure and liquid level products!
On September 18th, an order was placed for 2 sets of double flange differential pressure gauges with a range of 0~100KPa and 2 sets of double flange differential pressure level gauges with a range of 0~1000mm, all of which are 316L diaphragms and American standard DN50 flanges. According to the specifications provided by the customer and communication with the on-site engineer, it was found that there is negative pressure, about -90kPa. In order to ensure the normal use of the double flanges, we provided 2 methods for them to choose from. Considering that there is no possibility of modification on site, we chose a simple and economical method, which is to use isolation baffles to appropriately reduce the stretching of the diaphragm by negative pressure. The 4 double flanges have been calibrated, compensated for high and low temperatures, and recalibrated for aging, achieving an accuracy of 0.2%. After negative pressure testing, everything was normal. After the goods were shipped to the site, the user replaced the double flanges with isolation After installation and trial operation, everything is normal. A few days ago, the customer called back and the instrument was functioning normally, meeting the on-site requirements.
Double flange differential pressure level gauge
On September 24th, an order was placed for 5 pressure transmitters with a range of -0.1~6.0MPa and an accuracy of 0.1%. The customer had originally planned to use capacitive pressure transmitters, but we communicated with the on-site engineer and informed them that capacitive pressure transmitters cannot achieve a level of 0.1 due to their large range. We recommended the customer to use monocrystalline silicon, which has the characteristics of large range ratio and high accuracy. The customer agreed to our solution and after careful testing, it met the customer's requirements.
Pressure transmitter
Order on September 26th, one double flange differential pressure level gauge, DN50， Tantalum, 0-3m. The customer originally requested a dual 3m capillary tube, but after communication with the site, the capillary tube was changed to H=2.5m and L=3.5m. The transmitter body was installed under the lower flange to ensure that the H end is always under positive pressure, which can effectively extend the service life of the transmitter. Through primary school, high and low temperature compensation, and aging re calibration, meet customer needs.
Double flange differential pressure level gauge
On October 8th, two pressure transmitters were installed directly, with a threaded interface of M20 * 1.5 and a pressure range of 0~1.0MPa. The sensor was selected as 1.4MPa. The full-scale calibration is set to 1.4MPa, with high and low temperature compensation, and the user's range is changed to 0~1.0MPa, which meets the user's need to expand the range of use.
Pressure transmitter
