Tachometers Dealers in Bbd Bag, Kolkata

Tachometers or rev counters on cars, aircraft, and other vehicles show the rate of rotation of the engine’s crankshaft, and typically have markings indicating a safe range of rotation speeds. This can assist the driver in selecting appropriate throttle and gear settings for the driving conditions. Prolonged use at high speeds may cause inadequate lubrication, overheating (exceeding capability of the cooling system), exceeding speed capability of sub-parts of the engine (for example spring retracted valves) thus causing excessive wear or permanent damage or failure of engines. This is more applicable to manual transmissions than to automatics. On analogue tachometers, speeds above maximum safe operating speed are typically indicated by an area of the gauge marked in red, giving rise to the expression of “redlining” an engine — revving the engine up to the maximum safe limit. The red zone is superfluous on most modern cars, since their engines typically have a rev limiter which electronically limits engine speed to prevent damage. Diesel engines with traditional mechanical injector systems have an integral governor which prevents over-speeding the engine, so the tachometers in vehicles and machinery fitted with such engines sometimes lack a redline.

• Type Of Tachometer: Digital Tachometer
• Model Name/Number: 931
• Brand: Fluke
• Usage/Application: Speed Measurement
• Power Supply: 2 x 1.5V AA battery
• Accuracy: +-0.02%
• No. Of Digits In Display: 6 digit backlight display
• Range: 1 to 99999 revolutions/minute
• Measuring Distance: optical - 500 mm

• Accuracy: 2% of indicate scale
• Speed Range: 0-10,000 RPM
• Scale Plate Diameter: 58 mm
• Gross Weight: 450 gm
• Display Type: Analog

• Model No.: 461830

The Extech 461830 is a digital StroboTach tachometer. Freeze motion and analyze rotating objects without contact. Checks and analyzes motion and speed by simply aiming and synchronizing its flash rate (FPM) with a rotating object. Ideal for measuring the speed of moving gears, fans, pumps, motors and other equipment used in general maintenance, production, quality control, or laboratories. Complete with 6 ft power cord, handle and can be tripod mounted.     Features:   Checks and analyzes motion and speed by simply aiming and synchronizing its flash rate (fpm) with a rotating objectRPMs on 4 digit LED displayHigh accuracy over a wide, dynamic range via exclusive microcomputer LSI circuit and crystal control time-baseIdeal for measuring the speed of moving gears, fans, pumps, motors and other equipmentTripod mount for stationary use  

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Under Speed Monitor, Line Voltage & Frequency Monitor