M25-R (Refrigerant) Meter User Manual
Contents
1. M25 R Refrigerant Meter User Manual Specifications Power supply Battery CR123A 3 0V 1400mAh Sampling rate 1 2 sec max Battery life 2 years for continuous operation without back light Pressure range 0 750 psi Burst pressure 3x F S Resolution 0 5 psi Working temperature 10 C 60 C Pressure accuracy 0 5 F S 22 28 C for 2 bar lt pressure range lt 100 bar 1 for pressure range lt 2 bar or pressure range 100 bar Port 1 8 NPT 1 4 NPT Measure fluid gas and liquid compatible with SUS304L Unit PSI BAR Kg cm2 MPA kPa In Hg mm Hg Atm Working humidity 35 85 LCD 4 Digits Key Function ON Ref OFF SW 1 Power on Refrigerant change Power off LIGHT P T SW2 Back Light P T change Operation 1 Press ON Ref OFF key to power on The LCD shows the previous refrigerant around 3 seconds Afterwards shows the pressure reading 2 Pressing ON Ref OFF key will show current used refrigerant Press ON Ref OFF again will show next refrigerant to be selected As the requiring refrigerant appears on the LCD wait around 5 seconds to confirm the setting and come back to the measuring state 3 Press LIGHT P T key to turn on the backlight for 5 seconds 4 Press and hold ON Ref OFF key and LIGHT P T key simultaneously for 3 seconds The LCD shows 8888 and then re zero meter It will calibrate the error due to atmosphere variation Don t r2. e zero in the closed pipe 5 Press and hold LIGHT P T key for 3 seconds The LCD shows temperature reading If press and hold LIGHT P T key again The LCD shows pressure reading again Every time you power on the meter it will show the pressure reading 6 Press ON Ref OFF key for 3 seconds to power off the meter How to change the units of pressure and temperature A Press and hold ON Ref OFF key more than 3 seconds in the power off state until the LCD shows P x x will flash and show previous setting Then release the key B Press LIGHT P T key to select the pressure unit P 2 gt P 2 gt P 3 gt P 4 gt P 8 gt P 1 The meaning are as below P 1 PSI P 2 BAR P 3 Kg cm P 4 kPa P 5 MPa P 6 In Hg P 7 mm Hg P 8 Atm C Press ON Ref OFF key to complete the setting of pressure unit and enter the setting of temperature unit The LCD show t C or t F D Press LIGHT P T key to select the temperature unit t C t FOt C t C C tF F E Press ON Ref OFF key to finish all settings The LCD shows LoAd around 2 seconds and then come back to the measuring state of pressure
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