PFEA111-IP65 3BSE050090R65库存备件
look QUALITY SYSTEM ISO 9001:2008认证确保所有材料、方法和工艺符合Tel Tru的形状、配合、，用于确保部件质量和工艺一致性的统计过程控制QA方法。NIST校准实验室对制造过程中使用的所有标准温度计和测量仪器进行可追溯验证。确保按照ASME B40.3 A级±1%满量程进行校准。校准标准可追溯至美国国家标准与试验研究所（NIST）Tel-Tru方法：*业内最谨慎、最精确*产生的典型精度优于ASME B40.3 AA级（1%-1/2%-1%）全量程超温限值高达250°F 100%250°F至550°F 50%550°F至1000°F 800°F，用于连续使用，超过800°F温度范围的间歇使用20标准华氏温度范围从-100°到1000°20标准摄氏度范围从-75°到550°13标准双量程范围开发了超过120个量程，可能因刻度盘尺寸的不同而不同浸入：阀杆周围的凹槽显示每个温度计上的最小浸入点。为了获得最准确的读数，阀杆的敏感部分必须完全浸入双金属衬套，最大限度地减少线圈与管壁的接触。在长杆温度计上定期使用定心轴承BIMETAL coil超灵敏双金属螺旋线圈，制造公差严格。热处理以消除应力。硅涂层可最大限度地减小指针振动，最大限度地提高热传递和响应时间。每个线圈的角偏转经过测试，与刻度盘刻度完美匹配Tel Tru设计和制造的精度为±1⁄10°F的精密校准槽布局第4页➤ 选择双金属温度计时的注意事项：应用？连续工艺流程、静态储罐或实验室测试等。环境条件？环境温度、湿度或腐蚀性大气（盐雾等）工艺条件？压力、温度、介质粘度、流速和可能的振动温度计的润湿材料是否与测量介质兼容？窗户材料？型号类型表盘尺寸？当温度计安装在系统中时，为了获得最大的可读性，配件连接的位置–背面、可调角度、底部、顶部、右侧或左侧连接位置？装配螺纹尺寸和类型？STEM储罐的管道尺寸或深度？需要浸没长度？阀杆长度？阀杆直径？温度范围工艺操作温度？需要高和低总温度范围？高和低超范围可能性？要求的最小和最大精度？是否需要外部重置？刻度-°F、°C或双刻度？双金属温度计不应连续使用超过800°F（450°C）选项和附件热电偶套管look QUALITY SYSTEM ISO 9001:2008 certified Assures that all materials, methods and processes meet Tel-Tru’s highest standards for form, fit, and function Statistical Process Control QA methods used to assure component quality and process consistency Calibration lab for NIST traceable verification of all standard thermometers and measuring instruments used in manufacturing process ACCURACY Per ASME B40.3 Grade A ±1% full span is guaranteed Calibration is to standards traceable to National Institute of Standards and Testing (NIST) Tel-Tru methods: * Most careful and precise in the industry * Produces typical accuracy better than ASME B40.3 Grade AA (1%-1 ⁄2%-1%) full span OVER TEMPERATURE LIMITS Up to 250°F 100% 250° F to 550°F 50% 550° F to 1000°F 800°F for continuous use, intermittent use over 800°F TEMPERATURE RANGES 20 Standard Fahrenheit ranges from -100° to 1000° 20 Standard Celsius ranges from -75° to 550° 13 Standard Dual scale ranges Availability of over 120 ranges developed, may vary by dial size IMMERSION: Groove around stem shows minimum immersion point on each thermometer For most accurate reading sensitive portion of stem must be completely immersed BIMETAL BUSHING Pressed into groove on stem Centers coil in stem 302 stainless steel stem wire goes through center of bushing connecting bimetal element to pointer, minimizes coil touching tube wall Centering bearings are used at regular intervals on long stem thermometers BIMETAL COIL Super sensitive bimetallic helix coil Fabricated to tight tolerances Heat treated for stress relief Silicone coated to minimize pointer vibration and maximize heat transfer and response time Angular deflection of each coil is tested for perfect match with dial graduation layouts in precision calibration baths designed and built by Tel-Tru with accuracy to ±1 ⁄10°F MADE IN USA Page 4 ➤ CONSIDERATIONS WHEN SELECTING BIMETAL THERMOMETERS: Application? Continuous process flow, static tank, or laboratory testing etc. Environmental conditions? Ambient temperature, humidity, or corrosive atmosphere (salt spray etc.) Process conditions? Pressure, temperature, media viscosity, rate of flow, and possible vibration Wetted material of thermometer compatible with measured medium? Window material? MODEL TYPE Dial size? Location of fitting connection for maximum readability when thermometer is installed in system– Back, adjustable angle, bottom, top, right side or left side connection location? Fitting thread size and type? STEM Pipe size or depth of tank? Immersion length required? Stem length? Stem diameter? TEMPERATURE RANGE Operating temperature of process? High and low Overall temperature range required? High and low Over-Range possibilities? Minimum and maximum Accuracy required? External reset required? Scale - °F, °C or dual? Bimetal thermometers should not be used continuously over 800°F (450°C) OPTIONS AND ACCESSORIES Thermowell
