型号 | 2010-20 |
放大倍数 | 20X |
视野 | φ7.20mm |
最小刻度 | 0.05mm |
测定范围 | 6.0mm |
Reliable low-power wireless sensor networking eases development and deployment. Tmote Sky is the next-generation mote platform for extremely low power, high data-rate, sensor network applications designed with the dual goal of fault tolerance and development ease. Tmote Sky boasts the largest on-chip RAM size (10kB) of any mote, the first IEEE 802.15.4 radio, and an integrated on-board antenna providing up to 125 meter range. Toward development ease, Tmote Sky provides an easy-to-use USB protocol for programming, debugging and data collection.
Tmote Sky offers a number of integrated peripherals including a 12-bit ADC and DAC, Timer, I2C, SPI, and UART bus protocols, and a performance boosting DMA controller. Tmote Sky offers a robust solution with hardware protected external flash (1Mb in size), applications may be wirelessly programmed to the Tmote Sky module. In the event of a malfunctioning program, the module loads a protected image from flash.
Designed with applications in mind, the Tmote Sky module has received FCC certification and may be added into existing products.
With TinyOS support out-of-the-box, Tmote Sky leverages emerging wireless protocols and the open source software movement. Tmote Sky is part of a line of modules featuring optional on-board sensors to increase robustness while decreasing cost and package size.
Tmote Sky is functionally equivalent to Moteiv"s Telos Revision B. All Telos Revision B code will run without modifications on the Tmote Sky module.
ZBB牌110kV级低损耗系列变压器是在消化吸收国内外技术的基础上,针对我国城乡电网改选,自行研制开发了性能的低局放,低噪音、低损耗、抗短路能力强的换化产品,其的性能记得了有关专家和用户的高度评价。
产品特点: | 周围空气温度:温度+40℃,温度-15℃;温度条件:日平均相对湿度:≤95%;日平均水蒸气压力不超过2.2kPa; 月平均相对湿度:≤90%;日平均水蒸气压力不超过1.8kPa; 海拔高度:3500mm及以下。地震烈度:不超过8度周围空气不受腐蚀性或可燃气体、水蒸汽等明显污染。无经常性的剧烈震动场所。在超过GB3906规定的正常的环境条件下使用时,由用户和制造厂协商。
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使用条件: | 周围空气温度:温度+40℃,温度-15℃;温度条件:日平均相对湿度:≤95%;日平均水蒸气压力不超过2.2kPa; 月平均相对湿度:≤90%;日平均水蒸气压力不超过1.8kPa; 海拔高度:3500mm及以下。地震烈度:不超过8度周围空气不受腐蚀性或可燃气体、水蒸汽等明显污染。无经常性的剧烈震动场所。在超过GB3906规定的正常的环境条件下使用时,由用户和制造厂协商。 |
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技术参数: | ![]() |
国家标准GB11914—89分析方法规范地制定了水质化学需氧量COD(cr)的ky-100 COD消解器测定步骤:严格地规定了方法的加热消解时间、溶液酸度、氧化剂和催化剂的用量等条件指标。因此,水质COD(cr)的测定有严格的条件规定,违背了条件规定进行操作,就会影响测定的性。
标准COD(cr)测定仪遵循国际标准(ISO)和国家标准(GB)的基本原则,了回流加热微沸2小时的消解操作,试剂溶液的配制和加入量都和GB法一致,确保精确的分析结果。
ky-100 COD消解器采用微机技术进行定时控制加热电炉,可对5个、10个消解锥形回流装置同时进行加热。达到节能、减低电力负荷、提率的目的。
ky-100 COD消解器采用玻璃毛刺回流管代替球形回流管,并以风冷技术取代自来水冷却方式,既可以节水又能使仪器规范化,同时还提高了仪器使用的安全性。
ky-100 COD消解器的化学溶液配制、操作和COD的计算遵照GB11914—89,低于50mg/L的COD水样可通过稀释滴定剂和氧化剂来提高精确度,高于1000mg/L的COD水样,可以通过水样的比例稀释来完成测定。
ky-100 COD消解器测量范围:0~1000mg/L、0~10000mg/L(水样稀释)
测量时间:不大于2h
测量误差:邻苯二甲酸氢钾标准溶液(500mg/L)、相对标准偏不大于5.0%工业
有机废水(500mg/L)、相对标准偏不大于8.0%
环境温度:5~40℃
加热功率:1500W(AC 220V±22V,50HZ)
森维科技: QQ:2234277079
ERM-EC681K/680K描述: ERM-EC681k 高浓度 RoHS标准分析参考物质(货号:ERM-EC681k) RoHS related CRMs available from IRMM Certified Reference Materials for RoHS testing 符合RoHS指令要求塑胶(polyethylene)参考标准物质, 含四种重金属,100克颗粒/瓶 RoHS related CRMs 2 polyethylene materials certified for Br, Cd, Cl,Cr, Hg, Pb (and other elements)trace elements in HDPE ERM-EC681k 高浓度 RoHS标准分析,100克颗粒/瓶 材料Low-density polyethylene, LDPE, plastic, 组分Analyte Value 浓度值 As Arsenic 29.1 mg/kg (certified) Cl Chlorine 0.80 g/kg (certified) Br Bromine 0.77 g/kg (certified) Cd Cadmium 137 mg/kg (certified) Cr Chromium 100 mg/kg (certified) Pb Lead 98 mg/kg (certified) Zn Zinc 1.25 (ind.) g/kg (indicative) Sn Tin 86 (ind.) mg/kg (indicative) Sb Antimony 99 mg/kg (certified) S Sulfur, Sulphur 0.63 g/kg (certified) Hg Mercury 23.7 mg/kg (certified)