Dwyer 476A 478A型數(shù)顯壓力計(jì)差壓計(jì)

數(shù)顯壓力計(jì)和478A系列數(shù)顯差壓計(jì)

單壓或差壓測量，電子調(diào)零，精度為±1.5%476A和478A型

476A型 數(shù)顯壓力計(jì) 適用于實(shí)驗(yàn)室或研究機(jī)構(gòu)，它為單壓測量，范圍從-20到20英寸水柱，精度為1.5%。它是為暖通空調(diào)工程公司而設(shè)計(jì)，可用于調(diào)整供風(fēng)壓力，校準(zhǔn)和設(shè)定壓力開關(guān)，調(diào)整減壓器，系統(tǒng)平衡測試等。采用鋁合金外殼，牢固耐用。

478A系列數(shù)顯差壓計(jì)可用于測量正壓，負(fù)壓或差壓。它的功能包括：可選工程單位，自動較零，數(shù)據(jù)保持，峰谷值記錄。按住Hold保持鍵可將當(dāng)前數(shù)據(jù)保持顯示。478A帶有零點(diǎn)按鍵可隨時(shí)較零。

Service: Air and compatible gases.

Wetted Materials: Consult factory.

Accuracy: ±1.5% FS @ 72°F (22.2°C). Includes linearity and repeatability.

Pressure Hysteresis: ±0.1% of FS.

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.

Dwyer 476A 478A型數(shù)顯壓力計(jì)差壓計(jì)