Digital hour meter for panel mounting, 7 Digit, up to 99999 h 59 min, 24V AC/DC, 160V - 240VAC, TENSE (Made in Turkey)

The HM-48D / HM-48 is a digital hour meter manufactured by Tense Electronics, designed to calculate and track the total operating time of electrical machinery and industrial equipment to plan maintenance intervals or lease time calculation.

Main features:

• Time Range: Measures up to 99999 hours 59 min.
• Display: Features a 7 digit LED display showing hours (3 digits), minutes (2 digits), and seconds (if counted less than 1000 h) or 5 digits for hours and 2 digits for minutes if >1000h
• Mounting: Designed for panel mounting, making it suitable for electrical panels and control cabinets.
• Operating Voltage: Typically operates 24V, 160–240V AC at a frequency of 50/60Hz or 24V DC.
• EEPROM memory.

Working Principle

• Memory Retention: If the device is de-energized, it automatically saves the last recorded time. Upon re-energization, it resumes counting from where it left off.
• Reset Mechanism: The meter is resettable. To reset the count to zero, a non-conductive object must be used to press the reset button for approximately 5 seconds.
• Usage: It is connected to the load whose operating time needs monitoring. It starts counting as soon as the load is energized. 

Technical Specification:

• Power supply: 160-240V AC and 24V DC;
• Frequency: 50/60 Hz;
• Max hours: 99999 h and 59 min;
• Power consumption: <6VA;
• Operating temperature: -20C...+55C ;
• Panel cut-out : 46x46mm.