双光束紫外臭氧检测仪-205

产品简介美国2b公司的205型双光束紫外光臭氧分析仪，采用最新技术的254nm紫外双光束光源技术及设计，可以同时测量被测样品臭氧值及去臭氧的净化空气值。结合其它专利技术设计，205型双光束紫外光臭氧分析仪的测量响应时间仅需2秒，成为市场上最快响应时间的臭氧分析仪。仪器量程由1ppbv至100ppmv。该仪器具有高精度(1ppb)、体积小、重量轻(5磅,2.3kg)及耗电量低。特别适合使用于航天及汽球上的大气臭氧测量。
特点：使用双束254nm紫外光吸收法高精度及分解度，量程由1ppbv至100ppmv2秒响应时间，较同类型产品优越低电量消耗，能以12v dc (5.0w)外置电源操作dewlinetm 技术减低水气对仪器的干扰内置数据记录功能及实时时钟显示。并有3组仿真讯号输出以rs-232输出时间、日期、臭氧浓度、仪器内温度、气压及另外3组补充轮入讯号，例如外置温度、湿度及气压模拟输出0-2.5v选配gps功能及cf记忆卡应用：气球及航空的大气测量建立遥控监测网络建立城市监测网络个人及工作环境监测工业生产中监测产品规格：操作原理 双光束紫外光254nm灯
量程 1ppbv~100ppmv
精度 ±2%
采样时间 2秒、10秒、1分钟、5分钟及1小时
记忆容量 20,480组
输出 数码显示，0~2.5v，rs-232
流量 大约1l/min
尺寸 / 重量 90 × 210 × 290 mm / 4.7磅
电源 12vdc交流电
the model 205 ozone monitorä makes use of two detection cells to improve precision, baseline stability and response time.  in the dual beaminstrument, uv light intensity measurements io (ozone-scrubbed air) and i (unscrubbed air) are made simultaneously. combined with other improvements, this made it possible to reduce the time betweenozone measurements to 2 seconds, making our instrument the fastest uv-based ozone monitor on the market, while still retaining the small size, weight and power requirements of our popular model 202ozone monitor.  fast measurements are especially desirable for aircraft and balloon measurements where high spatial resolution is desired.  alternatively, one can choose to average morepoints internally to obtain even better precision.
the model 205 has all of the features of the model 202, including choice of averaging time (2 s, 10 s, 1 min, 5 min, 1 hr), analog output (0-2.5 v),real time serial output, internal data logger with 3 analog inputs for simultaneous logging of other measurements (e.g., t, p and rh), real time clock, and optional flash memory.
schematic diagram
features
backup sampling pump and flow meter (now standard); if the flow rate drops below a critical value, the backup pump is activated and an indication displayed on thelcdinternal data logger (eeprom), logs 14,336 lines of datareal time clockboth serial and user-scaleable analog voltage outputs (5-20 ma current output optional)three 0-2.5 vdc analog inputs for logging other measurements, such as external temperature, pressure and humidityconvenient user interface to microprocessor, including calibration parameters (gain and zero)selectable data averaging times of 10 s, 1 min, 5 min and 1 hr (custom averaging times available)dewline™ for elimination of any water vapor interference, a unique feature of 2b tech instrumentsoptions
flash card memory for virtually unlimited, portable data storagegps for continuous logging of latitude, longitude and altituderechargeable metal hydride battery provides 12 hr of continuous operationexternal particle filterserial-to-usb adapterrotary vane air pump for low temperature and quiet operationexternal air pump for long pump lifespecifications
measurement principle uv absorption at 254 nm; dual beam
linear dynamic range 1.0 ppb to 250 ppm
resolution 0.1 ppb
precision (1σ; rms noise) greater of 1.0 ppb or 2% of reading
accuracy greater of 1.0 ppb or 2% of reading
limit of detection (2σ) 2.0 ppb
nist-traceable calibration yes
measurement interval 2 s (data averaging options: 2 s; 10 s, 1 min, 5 min, 1 hr)
flow rate (nominal) ~1.8 liter/min
flow rate requirement >1.2 l/min
baseline drift <1 ppb/day
<3 ppb/year
sensitivity drift <1%/day
<3%/year
measurement time, frequency 2 s, 0.5 hz
response time, 100% of step change 4 s, 2 points
averaging times 2 s, 10 s, 1 min, 5 min, 1 hr
data storage 14,336 lines (10 s avg. = 1.4 days; 5 min avg = 1.4 mo.)
ozone units ppb, ppm, pphm, mg m-3, mg m-3
pressure units mbar, torr
temperature units °c, k
t and p corrected yes
operating temperature range 0 to 50 °c; -20 to 50 °c with low temperature modifications (rotary vane pump and lamp heater)
operating altitude range ~0-30 km (~30-1000 mbar)
power requirement;
supplied by battery or 110/220 vac power pack 12 v dc or 120/240 v ac, 415 ma, 5.0 watt (3.9 watt with cell heater unplugged)
size 3.5 x 8.5 x 11 inches (9 x 21 x 29 cm)
weight 4.7 lb (2.1 kg); 1.6 lb (0.7 kg) without instrument case
data logger capacity 14,336 lines (10 s avg. = 1.4 days; 1 min avg = 10 days; 5 min avg = 1.4 mo;
1 hr avg = 1.6 yr
analog inputs for internal logging of other instruments 3 analog inputs, 0-2.5 v; for example, could log external t, p and rh
data outputs rs232, 0-2.5 v analog, lcd display; external usb converter: (optional 4-20 ma current; request quote)
data transfer baud rates 1200, 2400, 4800, 19200
output ranges user defined scaling factor in menu
dewline™ yes
backup air pump yes
flow meter yes
options gps, flash card memory, 4-20 ma current output; lamp heater; rotary vane air pump; long-life external air pump; rack mount case
system includes
model 205 ozone monitorac power adapter (100-240 vac to 12 vdc) with country-specific plugcigarette lighter adapter battery wire connectorzeroing cartridgeoperation manual on cdcalibration data and nist-traceable calibration certificateinstrument birth certificateone year warrantyto download a brochure describing the model 205 ozone monitor™ (pdf format), click on the download button below.

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长沙巴溪仪器有限公司
刘意
13875951733
湖南长沙市芙蓉区远大路408号泰禹公馆2期中栋2单元406室

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