产品介绍
产品名称: H3A-3SL系列 气液两用防爆压差开关
产品型号: H3A-3SL
设定点范围2.5KPa-13.8Bar, 耐压到103Bar
用途：防爆设计，适用于工业精密测控
可调压差范围：2.44-44.78KPa,3.44-103KPa,34.4-482KPa,68.9-1379KPa
死区：可调范围的5%
压力腔材质：铝，铜或不锈钢可选
连接：1/8"NPT
最大耐压：1500PSIG
最大温度：105°C
输出：SPDT/DPDT可选
重量：2Kg
尺寸：76.2X136.53mm
选型表：
| 型号 | 压力腔材质 | 膜盒材质(Wetted) | 可调范围 | 开关(Switch) |
| H3A-1SL | Aluminum | Nitrile | 10-180" w.c. (2.48-44.78 kPa) | SPDT Snap Action Switch, Rated 5 A @ 125/250 VAC, 30 VDC |
| H3A-2SL | Aluminum | Nitrile | 0.5-15 psid (0.3-1 bar) | SPDT Snap Action Switch, Rated 5 A @ 125/250 VAC, 30 VDC |
| H3A-3SL | Aluminum | Nitrile | 5-70 psid (.34-4.8 bar) | SPDT Snap Action Switch, Rated 5 A @ 125/250 VAC, 30 VDC |
| H3S-1SL | 316 SS | Viton? | 10-180" w.c. (2.48-44.78 kPa) | SPDT Snap Action Switch, Rated 5 A @ 125/250 VAC, 30 VDC |
| H3S-2SL | 316 SS | Viton? | 0.5-15 psid (0.3-1 bar) | SPDT Snap Action Switch, Rated 5 A @ 125/250 VAC, 30 VDC |
| H3S-3SL | 316 SS | Viton? | 5-70 psid (.34-4.8 bar) | SPDT Snap Action Switch, Rated 5 A @ 125/250 VAC, 30 VDC |
| 举例 | H3 | S | 2 | S | C | MV | H3S-2SC-MV Differential Pressure Control; 316SS pressure chamber and Viton? diaphragm, weatherproof and ATEX, SPDT snap action switch with gold contacts; fixed deadband; automatic reset; adjustable range 0.5-15 psid. |
| 结构 | H3 | | | | | | Series designator, weatherproof and explosion-proof |
| 压力腔& 膜盒材质(Wetted) | | A | | | | | Aluminum chamber with Nitrile diaphragm |
| S | 316SS chamber with Viton? diaphragm |
| 可调范围 | | | 1 | | | | Adjustable range 10-180" w.c. (2.48-44.78 kPa) |
| 2 | Adjustable range 0.5-15 psid (0.03-1 bar) |
| 3 | Adjustable range 5-70 psid (.34-4.8 bar) |
| 4 | Adjustable range 10-200 psid (.7-13.8 bar) |
| 开关(Switch) | | | | S | | | SPDT snap action switch rated 5A @ 125/250VAC, 30 VDC |
| D | DPDT snap action switch rated 5A @ 125/250VAC, 30 VDC |
| 电气连接 | | | | | L | | 18 AWG x 18 inch lead wires |
| T | UL, CSA approved internal terminal block |
| C | ATEX approved internal terminal block |
| 可选项 | | | | | | DRAIN | Housing with drain - allows condensate to be drained from inside enclosure (meets NEMA 3 instead of 4X) |
| MV | Gold contacts on snap switch for dry circuits rated 1A @ 125VAC, 1A resistive or 0.5A inductive @ 30VDC |
| VIT | Viton? diaphragm option where not standard |
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