Bacharach H25-IR Operation & Maintenance Manual

Also see for H25-IR: Product catalog Specifications Instruction

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Bacharach H25-IR Operation & Maintenance Manual Manual pdf 36 page image

Operation H25-IR30 Instruction 3015-52864.2.3 Range SelectionThe H25-IR has three sensitivity ranges: SM (small), MED (medium), and LG (large). The range used whensearching for a leak depends on the size of the leak and the type of gas being monitored.Press the RANGE button until the desired range is displayed on either the instrument’s Data Display screen, oron the LCD of the Smart probe.Instrument Display Smart Probe DisplayNOTE: The range setting has no affect on the accuracy of the gas reading as displayed on the instrument whenmaking a leak-rate measurement. It does, however, change the sensitivity of the bar graph at the bottom of theData Display screen, the audible tone frequency as heard from the speaker, and the blink rate of the red LEDon the hand-held probe.The “SM” range is the highest sensitivity level, and is most likely used for fluorine based gases like R134a andmost fluorine based refrigerant blends.The “MED” range is used for chlorine and chlorine based gases like R12, R22, R123, etc. This position is alsouseful for locating large R134a or other fluorine based refrigerant leaks of 12 Oz/yr.The “LG” range is used to locate very large leaks.TIP: Blowing out the test area with shop air may enable the operator to locate a large leak more quickly.4.2.4 Setup SelectionThere are four user-defined Setups that allow the operator to quickly switch between frequently usedcombinations of Gas Type, Range, Feedback Mode, Setpoint, and the Auto Zero Off condition (refer to Section2.5 Configuring the SETUPS Function).When first turned ON, the instrument returns to the last Setup selected. To select a different Setup, first press theSETUP button to display the Setup Selection menu. Next, use the Up and Down buttons to highlight the desiredSetup, and then press ENT to make the selection and be returned to the Data Display screen. The name of thenewly selected Setup will appear on the Data Display screen.NOTE: The names listed in the Setup Selection menu are user defined, and may vary from what isshown above. The number of each setup, however, is what appears on the display of the Smart probe.Instrument Display Smart Probe DisplaySETUP NO. 1SETUP NO. 2SETUP NO. 3SETUP NO. 4Setup Nameand Number 0.00 SMSRCH (1)Oz/yrR134ASETUP NOSM SRCHRange: SM, MED, LG 0.00 SMSRCH (1)Oz/yrR134ASETUP NOSM SRCH