Dwyer 1800系列 差壓開關描述
品牌：dwyer  
產品描述：
氣體差壓開關；可調范圍：從17.5～55Pa到2.25～21.25kPa；重復精度：±2%FS
產品特點：
1800系列 工業級微差壓開關尺寸小、價格低，重復精度為2%，廣泛用于各種工業場合。可墻面或儀表盤面板上安裝，并能很方便的調整設定點。產品通過了UL和CSA，FM的認證。
警告：只能用于空氣及兼容氣體
Dwyer 1800系列 差壓開關描述
技術參數 ：
介質：空氣和不易燃，兼容氣體
材質：請向廠家咨詢
溫度范圍：-30 至180°F（-34 至82.2°C）。1823-00，-20 至180°F（-28.9
至82.2°C）
壓力范圍：持續壓力10 psig（68.95 kPa），沖擊壓力25 psig（172.4 kPa）
開關類型：單刀雙擲（SPDT）
可重復性：±2%
電氣指標：15 A @ 120-480 VAC，60 Hz. Resistive 1/8 HP @125 VAC，1/4
HP @ 250 VAC，60 Hz. De-rate to 10 A for operation at high cycle rates.
電氣連接：3 個旋緊接線端，一般，常開和常閉
連接件：1/8? NPT。內螺紋
安裝定位：膜片用于垂直方向，其它定位請向廠家咨詢
設定點調節：外殼內螺絲調節
重量：1 lb，5 oz（595 g）
機構認證：CE，UL，CSA，FM.
產品選型 ：
Dwyer 1800系列 差壓開關描述
選項及配件 ：
OPTIONS:
Weatherproof Housing - 16-ga. steel enclosure with gasketed cover (NEMA 4, IP66) for wet or oily conditions. Withstands 200 hour salt spray test. Wt. 5-1/2 lbs. (2.5 kg). Switch must be factory installed. Change 1823 base number to 1824 and add -WP suffix. Example: 1824-1-WP.
Explosion-proof Housing - Cast iron base with aluminum cover. Rated Class I, Group D; Class II, Div. 1 & 2, Groups E,F,G; Class III and NEMA 7 C,D, NEMA 9 E,F,G. Wt. 7-1/2 lbs. (3.4 kg). Switch must be factory installed. Change base number to 1824 and add -EXPL suffix. Example: 1824-1-EXPL.
MIL Environmental Construction - Unlisted Model 1820 can be furnished with a special sealed snap switch for protection against high humidity, fungus and/or military applications. Similar to Model 1823 except dead band is slightly greater and some lower set points may not be possible. To order, add suffix -MIL. Example: 1820-2-MIL.
ACCESSORIES:
A-389 - Mounting bracket, 16 ga steel, zinc plated and Dichromate dipped for corrosion resistance.
A-489 - 4" 303 SS straight static pressure tip with flange.
A-491 - 6" straight SS static pressure tip with mounting flange.
A-493 - 8" straight SS static pressure tip with mounting flange.
A-302F-B - 303 SS Static pressure tip with mounting flange, for 3/16" rubber or plastic tubing. 6" insertion depth, includes mounting screws
A-302F-A - 303SS static pressure tip with mounting flange, 4" hook style. For 3/16" ID rubber or plastic tubing, includes mounting screws.
A-302F-C - 303 SS Static pressure tip with mounting flange, for 3/16" rubber or plastic tubing. 8" insertion depth, includes mounting screws