{"product_id":"fluke-calibration-9118a-256","title":"Fluke Calibration 9118A-256","description":"\u003ch1\u003eFluke Calibration 9118A-256\u003c\/h1\u003eHigh performance furnace for thermocouple cals to 1200?C\u003ch3\u003eProduct Highlights\u003c\/h3\u003e\n\u003cp\u003eSeven key features set the 9118A apart from other high-temperature calibration furnaces:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1. Wide temperature range spanning most high-temperature applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStandards and guidelines such as AMS 2750 and EURAMET cg-8 require that a thermocouple be calibrated over the full temperature range in which it is used. The 9118A temperature range of 300 °C to 1200 °C covers most high-temperature applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Flexible configuration for calibrating a wide range of thermocouple types\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 9118A furnace can be operated with or without an isothermal block, which increases calibration workload that can be performed with a single furnace:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTube furnace configuration (without isothermal block): Base-metal thermocouples are often sheathed in formable materials such as braided fiberglass or PTFE. During calibration, they are bundled around a reference thermometer, held together with fiberglass cord or tape, and inserted into a tube furnace.\u003c\/li\u003e\n\u003cli\u003eIsothermal block configuration: Metal- or ceramic-sheathed thermocouples are generally constructed with noble-metal thermoelements and therefore have higher calibration accuracy requirements. The isothermal block, which accommodates up to four 6.35 millimeter probes, improves heat transfer and temperature stability. This better equalizes the temperature between the reference probe and the UUT, which lowers measurement uncertainty compared to calibration without a block.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe furnace configuration can be quickly changed by selecting the calibration parameters stored in the controller for the desired configuration and inserting or removing the alumina ceramic isothermal block.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. Best-in-class temperature stability and uniformity for calibration accuracy\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAxial and radial uniformity, as well as constant temperature stability over time, are key factors that contribute to accurate thermocouple calibrations.\u003c\/p\u003e\n\u003cp\u003eTo minimize axial temperature gradients, three actively controlled heater zones compensate for temperature differentials between the central zone and the front and rear zones. Type-S thermocouples, which are less susceptible to drift than other types, are used for zone control and cutout. Axial temperature uniformity when using the isothermal block is ± 0.2 °C over a 60 mm (2.4 in) zone from full immersion at 1200 °C.\u003c\/p\u003e\n\u003cp\u003eRadial (hole-to-hole) uniformity is ± 0.25 °C at 1200 °C when using the isothermal block, and ± 0.5 °C over a 14 mm (0.6 in) diameter at the center of the furnace tube without a block. \u003c\/p\u003e\n\u003cp\u003eWhen using the isothermal block, temperature stability is ± 0.1 °C or better over the full temperature range of the furnace.\u003c\/p\u003e\n\u003cp\u003e No other calibration furnace in its class comes close to this level of performance for both modes of operation. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4. Automated setpoint control for improved lab productivity\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA proprietary programmable controller, available in nine languages (English, Chinese, French, German, Japanese, Korean, Portuguese, Spanish, and Russian), enables technicians to automate setpoint temperature control for up to eight setpoint temperatures, the temperature ramp rate, and the time duration the furnace controls at each setpoint.\u003c\/p\u003e\n\u003cp\u003eAutomation and data collection can be further enhanced when the Fluke 1586A Super-DAQ is connected to the 9118A furnace through the RS-232 interface. The Super-DAQ can be programmed to control the furnace's setpoint temperatures and collect data for all sensors under test once the furnace has stabilized to within parameters defined by the user. After data has been collected at the first programmed temperature, the Super-DAQ will advance the furnace to the remaining programmed temperatures, collecting data at each setpoint. Once the test has been configured and started, the technician can walk away to work on other activities. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5. Non-metallic block helps minimize thermocouple contamination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCalibration furnaces with metallic blocks can contaminate thermocouples, causing their accuracy to drift over time. To minimize the risk of contamination, the furnace well and isothermal block of the 9118A are constructed of non-metallic, ceramic alumina. This eliminates the need to protect the thermocouples under test with costly ceramic sleeving—reducing cost of ownership.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e6. Deep immersion depth to support most thermocouple calibrations\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIndustry standards such as AMS2750 recommend calibrating thermocouples at their normal working depth of insertion. The 9118A immersion depth is 365 mm (14.4 in) when using the isothermal block and 350 mm (13.8 in) to the central point of the furnace without a block. This immersion depth is adequate for most of thermocouple calibrations. The 40 mm x 700 mm (1.6 in x 27.6 in) open-ended furnace tube can also be useful when calibrating multi-junction thermocouples or when sample testing spools of thermocouple wire.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e 7. Dynamic heater control and cutouts for reliability and safety\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 9118A controls the heater power level below 100% to prevent the heater elements from overheating—improving heater reliability and lifetime. Redundant over-temperature cutouts are built into the 9118A to ensure safe operation of the furnace. These include over-temperature, chassis thermostat, fan fault, control thermocouple fault, and user programmable cutouts.\u003c\/p\u003e","brand":"Fluke Calibration","offers":[{"title":"Default Title","offer_id":43182671298749,"sku":"9118A","price":0.0,"currency_code":"NGN","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0477\/6738\/8316\/products\/fluke-calibration-9118a-1000x1000_1_1.jpg?v=1740581058","url":"https:\/\/www.powerpro.ng\/products\/fluke-calibration-9118a-256","provider":"Powerpro Company Limited","version":"1.0","type":"link"}