TESTO 6781 超低温露点变送器
新世代低湿自动调整感应芯片
测量范围可达 -90 °Ctd
自动精确度调整功能，确保测量数据长期精准
全金属外壳，防护等级IP 65，经久耐用
管道安装耐压可达 50 bar (725 psi)
多种测量单位°Ctd, °Ftd, ppmV, %RH, g/m3, g/kg (可选择)
输出讯号电压四线式0 to 1/5/10 V 或电流0/4 to 20 mA (可指定)
仪器可连接P2A 维护软体，即时进行参数设置、调适，迅速完成设备安装调试
安装尺寸 G 1/2" 或 NPT 1/2" (可选)
多功能显示幕 (可选)
主要应用:
极度干燥的环境
- Medical compressed air: minimum humidity as a hygiene requirement
- Granulate drying: dry air is a requirement for product quality
- Gas engineering: humidity causes damage and reduces the value os the gas in the system
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技术参数:
| Humidity Parameters | |
|---|---|
| Units | °Ctd, °Ftd, %rF, % RH |
| Calculated variables | °CtdA, °FtdA(normed atmosph.dewpoint), ppmV, g/m3, g/ft3, g/kg, g/lb |
| Measuring range | -90 to -20°Ctd |
| Measurement uncertainty |
-20°Ctd to -40°Ctd: ±1.5K -40°Ctd to -60°Ctd: ±2K -60°Ctd to -75°Ctd: ±2.5K |
| Automatic self-adjustment | Cycle adjustable: 1h/6h/12h/24h |
| Analog outputs | |
| Current/accuracy |
0 to 20 mA ±0.03 mA (4-wire) 4 to 20 mA ±0.03 mA (4-wire) |
| Output type |
0 to 1 V ±1.5 mV (4-wire) 0 to 5 V ±7.5 mV (4-wire) 0 to 10 V ±15 mV (4-wire) |
| Measuring cycle | 1/sec |
| Resolution | 12 bit |
| Load | max. 500 Ω |
| Other outputs | |
| Digital | Mini-DIN for P2A software |
| Supply | |
| voltage supply | 20 to 30 VAC/DC, 300 mA current consumption, galvanically separate signal and supply line |
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