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                                Dwyer 数显压力计和数显差压计 476A/478A系列


                                    476A型 数显压力计 最适用于实验室或研究机构,它为单压测量,范围从-20到20英寸水柱,精度为1.5%。它是为暖通空调工程公司而设计,可用于调整供风压力,校准和设定压力开关,调整减压器,系?#31216;?#34913;测试等。采用铝合金外壳,牢固耐用。
                                    478A系列数显差压计可用于测量正压,负压或差压。它的功能包括:可选工程单位,自动较零,数据保持,峰谷值记录。按住Hold保持键可将当前数据保持显示。478A带有零点按键可随时较零。

                                单压或差压测量,电子调零,精度为±1.5%


                                技术参数 :

                                Service: Air and compatible gases.
                                Wetted Materials: Consult factory.
                                Accuracy: ±1.5% Full Scale @ 72°F (22.2°C). Includes linearity and repeatability.
                                Pressure Hysteresis: ±0.1% of Full Scale.
                                Pressure Limits: 5 psig (.34 bar).
                                Temperature Limits: 0 to 140°F (-17.8 to 60°C).
                                Compensated Temperature Limits: 32 to 104°F (0 to 40°C).
                                Thermal Effect: 0.05% F.S./°F.
                                Display: 4 digit LCD (.425"H x .234"W digits).
                                Power Requirements: 9 V alkaline battery, installed non-functional, user replaceable.
                                Process Connections: Barbed connection for use with 3/16" or 1/4" I.D. tubing.
                                Weight: 10.8 oz (306 g).
                                Agency Approvals: CE.


                                选项及配件 


                                ●A-402A - Nylon carrying pouch for various digital manometers - 7-1/2" x 3" x 2-1/4".
                                UHH-C1 - Soft carrying case
                                ●A-201 - Rubber latex tubing has less tendency to kink in storage and occupies less space, thus is best for portable work. 3/16" ID, 9' length.


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