数显式微差压变送器 产品详情
数显式微差压变送器技术规格：
量程
lfm110 -1000~+1000pa 小可设0~+100pa
lfm112 -10,000~+10,000pa 小可设0~+1000pa
lfm116 -100~+100pa 小可设0~+10pa
lfm111 -3400~+3400pa 小可设0~+100pa
精确度
±1.0%fs
压力单位
pa, mmh2o, mbar, inwg, mmhg, dapa, kpa, hpa
输出信号
0~5vdc、0~10vdc、4~20ma、rs-485信号
（模拟信号：电流型两线制、电压型三线制、电流电压同时输出六线制；数字信号：rs-485四线制）
电源供应
两组同时输出，输入电压为16~30vac/vdc,可配24vdc适配器(3.5×1.35mm)供电
4~20ma（两线制）输出，输入电压为无极性①的12~30vdc
0~5/10vdc输出，输入电压为16~30 vac/vdc
rs-485输出，输入电压为12~30vac/vdc
功耗
≤1.5w
① 无极性：输入电压源接线不分正负极方向
数显式微差压变送器功能：
响应时间
0.5s，1s，2s，4s
分辨率
lfm110
lfm112
1pa,0.1mmh2o,0.01mbar,0.004inwg,
0.007mmhg,0.1dapa,0.001kpa,0.01hpa
lfm116
0.1pa,0.01mmh2o,0.01mbar,0.01dapa,0.001hpa
lfm111
1pa,0.1mmh2o,0.01mbar,0.004inwg,
零点校准
手动按键零点校准
测量介质
空气和中性气体
允许过压
15kpa（lfm110）；150kpa（lfm112）；4.5kpa（lfm116）；60kpa（lfm111）
使用温度
-10~+60℃
存储温度
-10~+70℃