HJ-502 Generator Digital Display Meter 5 in 1 Voltage Current Power Frequency Meter Single Phase

HJ-502 Generator Digital Display Meter 5 in 1 Voltage Current Power Frequency Meter Single Phase

Description:
HJ-502 display instrument is an industrial-grade generator dedicated instrument, which is carefully designed with the most advanced power dedicated chip as the core. It has display functions such as true RMS voltage, true RMS current, power, frequency, and accumulation. The HJ-502 display instrument has high voltage and low voltage protection. Its resolution is extremely high, easy to operate, it is a high-precision, reliable, and extremely durable instrument product.

Technical Parameters:
Signal source: mains/generation
Working voltage: DC 8-20V (±5％)
Voltage detection range: 0~500V, resolution 1V
Current measurement range: 0.0~50.0A, resolution 0.1A
Power measurement range: power measurement range 0.0~20.0KW, resolution 0.1KW
Frequency measurement range: 20.0~99.9Hz, resolution 0.2Hz
Cumulative working time: accumulative running time of the generator, save the power-off time; timing range 0000: 00~9999: 59 (note: 0.1=6 minutes)
Display mode: LED digital display
Working temperature: -25~70℃
Storage temperature: -40~70℃
Humidity: (20~90)%
Size: 80 × 63 × 68.5mm
Hole size: 75.5 × 58.5mm

Operation Instruction:
-Short press the MODE button: ①change mode; ②add 1 to the parameter in the protection setting mode; ③cancel the alarm
-Long press the MODE button for 3 seconds: in the protection setting mode, switch to the next digit. When switching to the last digit to adjust the parameters, save and exit the protection mode.
-Long press the MODE button for 6 seconds: ①Enter the protection mode. For example: in voltage mode, (the voltage indicator on the right is on), press and hold the MODE button for 6 seconds to enter the high voltage protection setting; in current mode, (the current indicator on the right is on), press and hold the MODE button for 6 seconds to enter the high voltage current protection setting; in power mode (the power indicator on the right is on), press and hold the MODE button for 6 seconds to enter the high power protection setting; in frequency mode (the voltage indicator on the right is on) to enter the high frequency protection setting. ②Switch protection in the protection mode (voltage protection and frequency are valid). Switch to low voltage protection mode in high voltage protection mode; switch to low frequency protection mode in high frequency protection mode.
Note: Long press time refers to the LED flashing (1 second flashing)

Wiring:
Red ①: battery positive
Black ②: battery negative
Gray ③: water temperature detection
Orange ④: low oil pressure judgment
Yellow ⑤: normally closed contact (relay is closed during protection, normally closed contact is disconnected, press MODE key to confirm to restore normally closed)
Yellow ⑥: normally closed contact (relay is closed during protection, normally closed contact is disconnected, press MODE key to confirm to restore normally closed)
Green ⑦: power generation output detection
Green ⑧: power generation output detection

Package List:
1 x Generator Digital Meter