Handheld Calibrator
Overview
A handheld calibrator is a compact, battery-operated device designed for on-site calibration of industrial instruments. It serves as a critical tool for maintenance engineers and technicians to ensure the accuracy of sensors and transmitters in real-world conditions. Unlike benchtop calibrators, its portability allows for field use in harsh environments like oil refineries or power plants. These devices often integrate multiple functions, such as simulating and measuring pressure, temperature, or electrical signals. Leading manufacturers include Fluke, Beamex, and Druck, offering models tailored to specific industries like pharmaceuticals, HVAC, or aerospace.
Structure and Working Principle
Handheld calibrators consist of a microprocessor, signal generator/measurement modules, display, and input/output ports. The core components include precision voltage/current sources, resistance banks for RTD simulation, and pressure pumps (in hydraulic models). They operate by comparing the output of a device under test (DUT) against the calibrator’s reference standard. For example, a temperature calibrator may simulate a PT100 RTD signal while simultaneously measuring the sensor’s response. Advanced models feature automated calibration sequences and data logging to comply with regulatory traceability requirements.
Key Features
Modern handheld calibrators emphasize ruggedness (IP54 or higher ratings) and intuitive interfaces with touchscreen controls. High-end models achieve accuracies up to ±0.01% of reading, with some offering wireless connectivity for remote monitoring via Bluetooth or Wi-Fi. Multi-language support and configurable unit displays (e.g., psi/bar for pressure) enhance usability. Specialized variants include intrinsically safe designs for hazardous areas (ATEX/IECEx certification) and dual-pressure/vacuum capabilities for differential pressure instruments.
Application Areas
These devices are indispensable in industries requiring stringent measurement compliance: oil and gas (API standards), food processing (HACCP), and utilities (ISO 6780). They verify critical instruments like safety valves, boiler controls, and emission monitors. In pharmaceutical manufacturing, calibrators ensure GMP compliance for sterilization sensors. Automotive plants use them for torque wrench calibration, while aerospace applications demand MIL-STD-45662A traceability. Portable models are also deployed for emergency repairs in remote locations.
Maintenance and Precautions
Regular performance verification (typically annual) against NIST-traceable standards is mandatory. Battery compartments should be inspected for corrosion, and connectors kept clean from debris. Avoid exposing the unit to rapid temperature changes that may cause condensation. For pressure calibrators, always depressurize before disconnecting hoses. Store in protective cases with silica gel packs when not in use. Firmware updates from manufacturers often address bug fixes and measurement algorithm improvements.
B2B Procurement Guide
Industrial buyers should prioritize devices with calibration certificates from accredited labs (e.g., UKAS or DAkkS). Key specifications include measurement uncertainty, response time, and compatibility with proprietary instrument protocols (HART, Foundation Fieldbus). Evaluate total cost of ownership—consider battery life, accessory costs (test leads, pressure modules), and software licensing fees for data management. Leasing options or rental programs may suit short-term project needs. Leading distributors like RS Components or Grainger offer volume discounts for enterprise purchases.
Related Manufacturers
- 主营：检测仪、声级计、智能红外、水质采样器、烟尘采样器、微生物采样器、气溶胶采样器、静电能谱、职业卫生、水质自动、生物安全柜、电子流量计、红外测温仪、烟气测试仪、气体分析仪、明渠流量计、厨房油烟检测
- 主营：黑度仪、场强仪、检测仪、自动采样器、黑烟识别器、水质采样器、微电脑控制器、微生物采样器、手持式抓拍仪、气溶胶采样器、风速仪、检测箱、外置泵、电磁兼容、流速监测仪、紫外辐照仪、水质监测仪、黑球指数仪、水质速测箱、风速测量仪、甲醛测试仪、明渠流量计、孔口流量计、电磁场测量仪、恒温恒湿设备
- 主营：生物安全柜、油气回收检测仪、厌氧培养箱、定量采样机器人、在线水质采样器、菌落计数器、双路烟气采样器、大气采样器、颗粒物采样器、恶臭气体采样器、环境氟化物采样器、二恶英采样器、真空气袋采样器、气体流量校准仪、微生物气溶胶浓缩器、便携式油烟检测仪、水质多参数检测仪、红外测油仪、液液萃取仪、二氧化碳培养箱、采样工作站、恒温恒湿称重系统、自动烟尘烟气测试仪、烟气流速流量测定仪、烟气汞取样管
- 主营：水质检测仪、bod测定仪、加油站设备、手持式声级计、恒温恒湿称重系统
- 主营：仪器校准、仪器校验、计量校准、仪器计量、仪器校正、仪器外校、计量检测、计量检定、千斤顶标定
- 主营：内置泵、led设备、测量套件、粒子计数器、粉尘监测器、过滤器试验装置、光源设备、卤素光源、防尘口罩、空气监测、数字粉末计、数字粉碎计、普通噪声计、内置抽吸泵、粉尘捕集面罩、浓度分析设备、排气阀气装置、清晰照明设备、累计流量测定功
- 主营：施敏打硬、光纤焊接机、进口胶水、除尘器、OSAWA、焊接电源、电焊机、点焊机、真空泵、点胶机、过滤网、超声波清洗机、恒温水槽、吹尘枪、miyachi米亚基、amada天田焊接机、kaijo、新宝减速机、行星减速机、氧气分析仪、计量泵、阀门
- 主营：美国OMEGA热电偶、美国OMEGA热电阻、美国OMEGA测温线、美国OMEGA热电偶连接器、美国OMEGA压力传感器、美国OMEGA称重传感器、英国THERMAX测温纸、英国TMC测温纸、日本RKC热电偶、日本安立热电偶、美国OMEGA压力计、美国OMEGA流量计、美国OMEGA温度计、美国OMEGA记录仪
- 主营：美国OMEGA热电偶、美国OMEGA热电阻、美国OMEGA插头插座、校准器、美国OMEGA热电偶线、日本RKC热电偶、日本安立热电偶、英国TMC测温纸、THERMAX测温纸
- 主营：测试仪、绝缘靴、电能计量、升流器、大电流发生器、绝缘手套、速断试验、拉力试验机、电缆探测仪、充放电一体机、终检测试系统、局部放电测量仪、耐压试验操作箱、耐压试验操作台、自动化测量系统、电能质量分析仪
- 主营：校准器、船舶物料手册
- 主营：过滤仪、黑度仪、干燥箱、测温仪器、烟气监测器、分析仪、检测仪、电流表、测定仪、定氮仪、流量仪、监测系统、干燥装置、数字照度计、红外探测仪、电压测试仪、箱式电阻炉、数字万用表、搅拌加热套、水质监测仪、家装量房尺、高光谱相机、温度测量仪、低温运输箱、距离测试仪
- 主营：黑度仪、培养皿、检测仪、测量仪器、恒温加热器、大气采样器、菌落计数器、水质采样器、颗粒物采样器、手持式抓拍仪、二进制传感器、浮游菌采样器、培养箱、测油仪、高锰酸盐、直读分析仪、生物安全柜、综合取样管、喷嘴调节阀、明渠流量计、激光粉尘仪、液液萃取仪、强力抽气泵、油气回收装置、磁致伸缩流量
- 主营：明渠流量计、气囊泵、水质多参数、空气采样器、水样抽滤器、烟尘烟气测试仪、COD测定仪
- 主营：接收机、评估板、定向仪、探测器、调制器、解调器、衰减器、控制器、滤波片、分析仪、单脉冲、脉冲源、波长计、窄带通、二极管、滤光片、偏振片、分束镜、光通信、双偏振、中红外、光束匀、激光镜、光旋转、电吸收