{"product_id":"zhonghe-8000b-072-expansion-monitoring-module","title":"ZHONGHE 8000B\/072 Expansion Monitoring Module","description":"\u003cp\u003eThe \u003cstrong\u003eZHONGHE 8000B\/072\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e8000B\/072\u003c\/strong\u003e Thermal Expansion Monitoring Module, operates as a dedicated hardware component for dual-channel thermal expansion monitoring within the 8000B series rotating machinery protection framework. This plug-in card conditions analog input trajectories from TD-2 LVDT linear displacement sensors, tracking turbine cylinder growth to drive protective relay interlocks and process visualization loops.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e8000B\/072\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eZHONGHE (Jiangyin Zhonghe Electric Instrument Co., Ltd.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eStandard single-slot instrumentation card weight profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eForm-factor matched for a single standard 8000B chassis slot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 45 deg C (Operational limits: -10 to 50 deg C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eLess than or equal to 10 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Channels\u003c\/td\u003e\n\u003ctd\u003eDual-channel independent thermal expansion paths\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Sensors\u003c\/td\u003e\n\u003ctd\u003eTD-2 LVDT linear displacement sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e0 to 50 mm (Default factory setting: 0 to 35 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Accuracy\u003c\/td\u003e\n\u003ctd\u003ePlus\/minus 1.5 percent of full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocal Display\u003c\/td\u003e\n\u003ctd\u003eFront-panel 4-digit LED numerical array (0.1 mm resolution)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Output\u003c\/td\u003e\n\u003ctd\u003e4-20 mA or 0-10 mA current loops (Maximum load: 500 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm Output\u003c\/td\u003e\n\u003ctd\u003eIntegrated relay contacts: 2 A at 28 VDC or 1 A at 250 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Communication\u003c\/td\u003e\n\u003ctd\u003eRS232 and RS485 hardware ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndustrial Protocol\u003c\/td\u003e\n\u003ctd\u003eMODBUS-RTU fieldbus standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironmental Limits\u003c\/td\u003e\n\u003ctd\u003eStorage: -40 to 60 deg C; Humidity: 20 percent to 90 percent RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication Velocity and Processing\u003c\/h3\u003e\n\u003cp\u003eThe module processes multi-channel displacement metrics and interfaces directly with the passive backplane bus assembly. High-density scaling allows the module to sample dual-channel LVDT waveforms concurrently with zero scanning delays between redundant sensing paths. The internal logic handles high-frequency AC demodulation and filter processing deterministically, converting primary and secondary differential coil voltages into stable linear displacement registers. These calculated expansion values are polled by the system bus master via the RS485 or RS232 serial interfaces using standard MODBUS-RTU protocol velocities, delivering continuous updates to external DCS networks.\u003c\/p\u003e","brand":"ZHONGHE","offers":[{"title":"Default Title","offer_id":45070726955123,"sku":"8000B\/072","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/screenshot_2026-06-05_15-25-17_10b3f9a7-994e-4851-b1a0-90be553a3d77.png?v=1780644435","url":"https:\/\/www.dcssupplier.com\/products\/zhonghe-8000b-072-expansion-monitoring-module","provider":"DcsSupplier Limited","version":"1.0","type":"link"}