{"id":51062,"date":"2026-10-06T08:32:10","date_gmt":"2026-10-06T08:32:10","guid":{"rendered":"https:\/\/chintanengineers.in\/?p=51062"},"modified":"2026-10-06T08:32:10","modified_gmt":"2026-10-06T08:32:10","slug":"ce-121-fuel-consumption-meter-specifications","status":"publish","type":"post","link":"https:\/\/chintanengineers.in\/pt\/ce-121-fuel-consumption-meter-specifications\/","title":{"rendered":"Especifica\u00e7\u00f5es do Medidor de Consumo de Combust\u00edvel CE-121"},"content":{"rendered":"

The CE-121 fuel consumption meter<\/a> uses separate positive-displacement sensors on diesel supply and return lines to calculate fuel used. Select its 1\/4-inch to 1-inch threaded sensor variant to match the actual connection, then check line flows and power supply.<\/p>\n

\"CE-121
CE-121 Fuel Consumption Meter, 220V AC \/ 12V DC \/ 24V DC<\/figcaption><\/figure>\n

How the CE-121 measures supply, return and used fuel<\/h2>\n
\"Selection
Pick a model: CE-121-006 vs CE-121-008 vs CE-121-012 or CE-121-015 vs CE-121-020 vs CE-121-025<\/figcaption><\/figure>\n

One CE-121 sensor measures diesel supplied to the engine. A second measures fuel returning from it. The display unit calculates used fuel as the difference between the two readings.<\/p>\n

A supply-line reading alone would count diesel that flows back to the tank unused. The backlit display shows in-flow, out-flow, used fuel and stock fuel. This setup suits critical-system fuel monitoring, where every litre supplied and returned needs to be tracked.<\/p>\n

CE-121 specifications at a glance<\/h2>\n

The CE-121 uses anodised aluminium positive-displacement sensors. Its accuracy is \u00b11% RS or 0.1% FSD in the standard installation position.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nCE-121 specification<\/th>\n<\/tr>\n<\/thead>\n
Sensor type<\/td>\nPositive displacement meter<\/td>\n<\/tr>\n
Sensor material<\/td>\nAluminium anodize<\/td>\n<\/tr>\n
Accuracy<\/td>\n\u00b11% RS or 0.1% FSD (standard installation position)<\/td>\n<\/tr>\n
Display<\/td>\nIn-flow, out-flow, used fuel and stock fuel; backlit<\/td>\n<\/tr>\n
Power<\/td>\n220V AC \/ 12V DC \/ 24V DC<\/td>\n<\/tr>\n
Output<\/td>\nRS-485 Modbus (optional)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

RS means reading; FSD means full-scale deflection. The accuracy line gives two alternative expressions, not a combined tolerance for calculated fuel use.<\/p>\n

Each sensor has its pulse-per-litre value marked on its body. Calibration uses pure diesel at three test pressures: 0.5 bar, 4 bar and 25 bar. At each pressure, the calculator records pulse-per-litre at 25%, 50%, 75% and 100% of the sensor’s flow range, which supports accuracy across partial loads as well as full flow.<\/p>\n

The display reads four values at once: in-flow, out-flow, used fuel and stock fuel. No separate totalizer or reset function exists beyond these four readings. For broader meter terminology, see the fuel flow meter specification article<\/a>.<\/p>\n

Match the sensor variant to the required thread<\/h2>\n

The six CE-121 variants cover 1\/4-inch through 1-inch threads. Two models share the 1\/2-inch connection.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Sensor model<\/th>\nThread size<\/th>\n<\/tr>\n<\/thead>\n
CE-121-006<\/td>\n1\/4 inch<\/td>\n<\/tr>\n
CE-121-008<\/td>\n3\/8 inch<\/td>\n<\/tr>\n
CE-121-012<\/td>\n1\/2 inch<\/td>\n<\/tr>\n
CE-121-015<\/td>\n1\/2 inch<\/td>\n<\/tr>\n
CE-121-020<\/td>\n3\/4 inch<\/td>\n<\/tr>\n
CE-121-025<\/td>\n1 inch<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Thread size alone cannot distinguish CE-121-012 from CE-121-015. Specify the required supply and return flow ranges when choosing between them. Engine ratings appear in the installation guidance, but rating alone is not a reliable model-selection rule.<\/p>\n

Check the installation before choosing a variant<\/h3>\n

Check both fuel-line connections, both line flows, sensor space and available power before choosing a thread size.<\/p>\n

    \n
  • Measure the supply and return connections separately; they need not share the same thread.<\/li>\n
  • Identify each connection’s thread form and pitch, not just its nominal size.<\/li>\n
  • Record the operating flow range in each line; the return line carries fuel the engine has not used.<\/li>\n
  • Allow space for two sensor bodies and the display unit.<\/li>\n
  • Confirm whether the installation supplies 220V AC, 12V DC or 24V DC.<\/li>\n<\/ul>\n

    A 1\/2-inch pipe connection narrows the choice to CE-121-012 or CE-121-015. It does not settle the flow-range question, so check the required operating flows with the engineering team before selecting either model.<\/p>\n

    Power and optional communications<\/h2>\n

    The CE-121 accepts three power inputs: 220V AC for fixed installations, 12V DC and 24V DC for vehicle or generator onboard supply. This dual-voltage DC option matters for fleet work, where the vehicle or generator supply may be 12V or 24V depending on the unit.<\/p>\n

    RS-485 Modbus is an optional output, not a standard fitting. Order the Modbus board with the unit if remote monitoring is needed, since fitting it later means opening the display housing.<\/p>\n

    With Modbus fitted, the CE-121 can connect to a server for remote data monitoring. This lets a fleet office pull in-flow, out-flow, used fuel and stock fuel figures without visiting each unit. For a plant connection, check the receiving system’s register requirements alongside the PLC\/SCADA integration article<\/a>.<\/p>\n

    FAQ<\/h2>\n

    What does the CE-121 display?<\/strong> Its backlit display shows in-flow, out-flow, used fuel and stock fuel.<\/p>\n

    What accuracy is listed for the CE-121?<\/strong> The catalog lists \u00b11% RS or 0.1% FSD accuracy in the standard installation position.<\/p>\n

    Does the CE-121 have two fuel sensors?<\/strong> Yes. One sensor measures diesel supplied to the engine and the other measures fuel returning from it; the system calculates the difference as used fuel.<\/p>\n

    Which CE-121 model has a 1\/2-inch thread?<\/strong> Both CE-121-012 and CE-121-015 have 1\/2-inch threads. Match the model to the required line flow as well as the connection.<\/p>\n

    Quick pick<\/h2>\n
      \n
    • CE-121-006:<\/strong> 1\/4-inch thread.<\/li>\n
    • CE-121-008:<\/strong> 3\/8-inch thread.<\/li>\n
    • CE-121-012 or CE-121-015:<\/strong> 1\/2-inch thread; check the required flow range.<\/li>\n
    • CE-121-020:<\/strong> 3\/4-inch thread.<\/li>\n
    • CE-121-025:<\/strong> 1-inch thread.<\/li>\n<\/ul>\n