The Altronic DTHO-1201/3201 series tachometers represent the third generation of Altronic digital speed sensing and indication devices. Designed for universal use, these high-quality, microprocessor-based devices can be powered from a C.D. ignition system or a magnetic pickup and are offered n two durable Lexan enclosures for use on natural gas engines and other critical rotating equipment. Overspeed trip and hourmeter functions are resident in both devices.
Setup of these highly accurate tachometers is accomplished through the front sealed-membrane keypad. They can be configured for use in monitoring engine RPM or higher speeds of interest such as turbocharger RPM. An advanced filtering algorithm assures a stable speed readout even during periods of speed fluctuation.
The DTHO-1201/3201 devices are certified for use in Class I, Division 1 and 2, Groups C and D hazardous areas by Canadian Standards Association (CSA).
Power Requirement …………….……… C.D. ignition (100-400V.) or
Magnetic pickup (3-20V. peak)
Hazardous Area Classification …….. Class I, Div. 1 and 2, Group C and D
See “To Order” below for details
Instrument Display ………….………….. 5-digit LCD, 0.4” height
Instrument Range:
RPM Indication …………………………. 0-9999 (engine), 0-99,900 (turbo)
Hours Indication …………….………… 0-99,9999 (settable)
Instrument Accuracy …………………… ±0.5% of reading, ±1 digit
Display Update Rate ……………………. 1 per second (with software filter)
Output Switch Rating ……..………….. 400 Vdc, 140 mA continuous N.O.
Ambient Temperature Rating ..…… -40°F. to +175°F. / -40°C. to +80°C.
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