FMA-LP1620A-B_FMA-LP1620A-I_FMA-LP1605A-B_MA-LP1605A-I气体质量流量计OMEGA

FMA-LP1620A-B_FMA-LP1620A-I_FMA-LP1605A-B_MA-LP1605A-I气体质量流量计OMEGA

规格

质量参考条件：（STP）25_C，14.7 psia

精度：±（RDG的0.8%±0.2%FS）

重复性：±0.2%

变压比：200:1

响应时间：10 ms，63.2%阶跃变化的典型默认响应时间。可变寄存器允许通过RS232通信现场调节响应时间。

输出：0至5 Vdc标准

工作温度：-10至50°C（14至122°F）

零点漂移：0.02%fs/°C/atm

量程漂移：0.02%fs/°C/atm

湿度范围：0至100%无冷凝

压力（最大）：50磅/平方英寸

可测量流量：125%fs

电源电压：7至30 Vdc（4至20 mA输出为15至30 Vdc）

电源电流：40 mA典型电流消耗；推荐100 mA可用电源

电缆连接：8针迷你DIN

湿部：302和303 SS、FKM、硅树脂RTV、尼龙616、铝

入口保护：IP40

-LSS（可选）：316LSS、303SS、430FRSS、全氟弹性体标准、FKM、EPDM、BUNA、氯丁橡胶通信：RS232标准、RS485（可选）

FMA-LP1620A-B_FMA-LP1620A-I_FMA-LP1605A-B_MA-LP1605A-I气体质量流量计OMEGA

Ranges of 0 to 0.5 SCCM Up to 0 to 500 SLM

Reports Mass Flow, Volumetric Flow, Temperature, and Pressure

<10 ms Response Time—Field Adjustable

130+ Gas Calibrations, Including Air, Ar, CH4, CO, CO2, Ethane, H2, He, N2, N2O, Neon, O2, Propane, Butane, Iso-Butane, Acetylene, Ethylene, Krypton, Xenon, and Sulfur Hexafluoride

Pressure, Temperature and Volumetric and Mass Flow Simultaneously Displayed

NIST 5-Point Certificate Included

No Straight Runs of Pipe Required

No Warm-Up Time

Turndown Ratio of 200:1 (0.5% Maximum Flow)

RS232 Standard

Portable Battery Powered units (-B models)

The FMA-LP1600A Series mass and volumetric flowmeters use the principle of differential pressure within a laminar flow field to determine the mass flow rate. A laminar flow element (LFE) inside the meter forces the gas into laminar (streamlined) flow. Inside this region, the Poiseuille equation dictates that the volumetric flow rate be linearly related to the pressure drop. A differential pressure sensor is used to measure the pressure drop along a fixed distance of the LFE. This, along with the viscosity of the gas, is used to accurately determine the volumetric flow rate. Separate absolute temperature and pressure sensors are incorporated and correct the volumetric flow rate to a set of standard conditions. This standardized flow rate is commonly called the mass flow rate and is reported in units such as standard cubic feet per minute (SCFM) or standard liters per minute (SLM). Standard units include a 0 to 5 V output (4 to 20 mA optional) and RS232 communications. The gas select feature can be adjusted from the front keypad or via RS232 communications. Volumetric flow, mass flow, absolute pressure, and temperature can all be viewed or recorded through the RS232 connection. It is also possible to multi-drop up to 26 units on the same serial connection to a distance of 38 m (125'). These flowmeters can be portable with an optional battery pack (-B models).

FMA-LP1620A-B_FMA-LP1620A-I_FMA-LP1605A-B_MA-LP1605A-I气体质量流量计OMEGA