这FMA-4100/4300series mass flow totalizers and meters can be programmed remotely using the RS232 or RS485, functioning to measure the rate of gas flow and record it in 23 selectable units. These devices have a multitude of applications due to an extensive list of functions, including high and low gas flow alarms, gas flow totalizers, automatic zero adjustments, 2s relay outputs, jumper selectable 0 to 5 Vdc or 4 to 20 mA analogous outputs, status LED diagnostics, storable calibrations and internal or user-specific K-factors. The local LCD display has 2 lines, each of 16 characters and modifiable back lighting, which enables concurrent readings. Use of RS232 or RS485 enables access of further data, such as the temperature of CPU, auto zero, flow, linearization table adjustment, settings for both totalizer and alarms, gas table, conversion factors, selection of units and dynamic response compensation.
FMA-4100或4300的本地和远程激活都可以自动偏移零调整。在修改仪表时,通过仪表流过仪表的流动最小,这一点特别有用。数字命令启用当前自动零值的读取,保存或启动。可以更改总体设置以启用各种功能:将操作分配给预设值,设置为零,从预设流量开始,开始/停止总计和读取。也可以在使用前设置警报,这可以指示高流量和低流量,并且可以任命为0到3600秒的预设延迟间隔,从而激活触点更近。一个称为闩锁模式控件的附加功能功能允许每个继电器在锁定上或确保相互关联的警报状态。但是,这些传感器不能用于测量氧气。
规格
- Calibrations:在标准条件[101.4 kPa(14.7 psia)和21.1°C(70°F)]下进行,除非另有要求或说明
- 环境(Per IEC 664):安装级别II;污染学位II
- 流量准确性(包括线性):在校准温度和压力下FS的±1%
- 可重复性:全尺度的±0.15%
- Flow Temperature Coefficient:全尺度/°C或更高的0.15%
- 流动压力系数:全尺度/psi(6.895 kPa)或更高的0.01%
- 倒车比率:50:1
- Flow Response Time:600毫秒的时间常数;大约2秒钟到设定流量的±2%以内的全尺度流量的25至100%
- 最大气压:3447 kPa gauge (500 psig)
- 最大压降:Max Flow ≤ 10 SLM: 1.28 kPa (0.18 psi)
最大流量> 10 SLM:27.58 kPa(4 psi)
- 气体和环境温度:5至50°C(41至122°F)
- 相对气体湿度:高达70%
- Leak Integrity:1 x 10-9SCCS他最多到外部环境
- 态度敏感性:重新零后,偏离陈述的准确性高达1%
- Output Signals:线性0至5 VDC(3000Ωmin负载阻抗);线性4至20 MA(500Ω最大环电阻)。最大噪声20 mV峰至峰(对于0到5 VDC输出)
- 中继:SPDT(30 VDC,1A)
- 传感器输入功率:11至26 VDC,100 mV最大峰到峰值输出噪声
- 能量消耗:+12 VDC(200 ma最大);+24 VDC(最大100 mA);电路板具有内置的极性逆转保护,300 MA可重置保险丝提供电源输入保护
- Wetted Materials:
- 标准铝模型:阳极氧化铝,黄铜,316不锈钢,FKM O形圈
- 可选的不锈钢型号:316不锈钢,FKM O形圈
- 可选的O形圈材料:亚博网站下载Buna,EPR(乙烯丙烯)或Pertluoroelastomer
- Inlet and Outlet Connections:
- FMA-4100/4300型号:Standard 6.35 mm (1/4") compression fittings for up to 50 SLM.
Standard 9.53 mm (3/8") for models above 60 SLM
- Optional:3.18 or 9.53 mm (1/8" or 3/8") compression fittings
- 显示(FMA-4300型号):本地2行x 16个字符LCD带有可调背光(文本的2线)
- 校准选项:Standard is one 10-point NIST traceable calibration. Optional, up to 9 additional calibrations may be ordered at additional charge. Contact OMEGA for additional information
- CE合规:EMC符合89/336/EEC的遵守
- 排放标准:EN 55011:1991, Group 1
- Class A Immunity Standard:
- EN 55082-1:1992