How to Use

Power supply

• Press ON/OFF key to turn the unit on or off

Difference

• Press the DIF key to display the value that is the difference between the current pressure and the pressure value when press the DIF key, with
• DIFFERENTIAL PRESSURE displayed on LCD.

HOLD key

Press HOLD key to hold the reading on the LCD with a “” icon displayed on the upper left corner of LCD, press HOLD key again to go back to normal measuring state.

Record key

• It is available to review MAX/MIN/ AVG values under record mode.
  • Press the REC key and the character “” shows on the LCD while all keys except ON/OFF key and backlight will be locked, and time counter works with the current time shows on LCD.
  • Press the REC key again, MAX shows on LCD and the maximum value and its pickup time will be shown on the LCD.
  • Press the REC key once again, MIN shows on the LCD and minimum value and its pickup time will be shown on the LCD.
  • Press REC key again, an average value shows with AVG character.
  • Press REC again to show the maximum, minimum and average value repeatedly in order.
  • Press the REC key for 2 seconds to exit record mode.

Backlight

• Press the backlight key to activate it.

Auto turn-off

• If there is no any further operation on the key within 1 minute, the unit will turn off automatically. This function can be cancelled by pressing on the HOLD key for a while and then turn the device on until “no” appears on the LCD.

Unit

• Press the UNIT key to show 11 units for option.

USB

• Built-in USB port allows connection with PC.

Error

• If there is any mistake reading appears, it will be shown on the LCD as following:
  • Err1：Pressure beyond positive range
  • Err2：Pressure beyond negative range (3) Err3：DIF difference beyond position limit (4) Err4：DIF difference beyond negative limit

Battery replacement

• Flashes when the battery is insufficient, replace
• it with 4 1.5V AAA batteries.