Bacharach H25-IR Manual De Usuario

Preparing for Operation 

H25-IR 

 

16

 

Instruction 3015-4342 

 
 

 
 

The GAS TYPE function sets the type of gas being monitored. Use the Up and Down buttons to highlight 

the desired gas. Press ENT to save the selection. 

  The gases displayed depend on which optical bench is installed. Refer to Section “7 Specifications.” 

 
 

 
 

 

 
 

The FEEDBACK MODE function provides the operator both visual and audible feedback in regard to the 

measured leak rate. This function determines how the gas-level graphical display (bar graph located at the 
bottom of the display) and audible tone operate as follows: 

 – The bar graph and audible tone continuously increase and decrease their values in step 

with the leak rate. For example, when the leak rate increases, the bar graph moves upscale and the 
audible tone increases in frequency. Their maximum values at various leak rates are determined by the 

Range setting. 

 – Both the bar graph and audible tone go to their maximum values when the leak rate equals 

or goes above the setpoint. Enter a setpoint value per Section 2.5.5 Setpoint. 

 –  This setting emulates the operation of the H25C Industrial Halogen Leak Detector. 

The bar graph and audible tone are suppressed when the leak rate is below the setpoint. They both go to 

their 50% values when the leak rate reaches the setpoint, and then they both continuously increase in 

value as the leak rate increases until reaching their maximum values at 2-times the setpoint. Enter a 
setpoint value per Section 2.5.5 Setpoint. 
Use the Up and Down buttons to highlight the desired function. Press ENT to save the selection.  
 

 

 

 

 
 

The SETPOINT function establishes a leak rate at which the graphical display and audible tone are 

turned ON as determined by the Feedback Mode setting (refer to the previous section).  

The setpoint value also sets the leak rate at which one or more of the instrument’s relays is energized 

whenever the leak rate equals, exceeds, or falls below the setpoint value (refer to Section 2.4.3 Relays), 
plus it establishes a reference point where the instrument’s auto-zero function can be turned OFF while in 

the Search mode (refer to Section 2.5.6 Search Auto Zero). 
Use the Left and Right buttons to move the cursor across the screen to highlight the digit to be modified, 
and then use the Up and Down buttons to modify that digit. Press ENT to save the new setpoint. 
 
 

 

 

GAS TYPE 

<

 R134A

 

SETUP NO. 1 

   R401A 

  

R402A 

 < 

R402B 

 

SETPOINT 

SETUP NO. 1 

           0

0

.0000 Oz/yr 

FEEDBACK MODE 

SETUP NO. 1 

  

CONTINUOUS 

 SETPOINT 

 H25C 

SETPOINT