Bacharach H25-IR Specifications Page 36
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Operation H25-IR
30 Instruction 3015-4342
4.2.3 Range Selection
The H25-IR has three sensitivity ranges: SM (small), MED (medium), and LG (large). The range used when
searching 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, or
on the LCD of the Smart probe.
Instrument Display Smart Probe Display
NOTE: The range setting has no affect on the accuracy of the gas reading as displayed on the instrument when
making a leak-rate measurement. It does, however, change the sensitivity of the bar graph at the bottom of the
Data Display screen, the audible tone frequency as heard from the speaker, and the blink rate of the red LED
on the hand-held probe.
The “SM” range is the highest sensitivity level, and is most likely used for fluorine based gases like R134a and
most fluorine based refrigerant blends.
The “MED” range is used for chlorine and chlorine based gases like R12, R22, R123, etc. This position is also
useful for locating large R134a or other fluorine based refrigerant leaks of 12 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 Selection
There are four user-defined Setups that allow the operator to quickly switch between frequently used
combinations of Gas Type, Range, Feedback Mode, Setpoint, and the Auto Zero Off condition (refer to Section
2.6 Configuring the SETUPS Function).
When first turned ON, the instrument returns to the last Setup selected. To select a different Setup, first press the
SETUP button to display the Setup Selection menu. Next, use the Up and Down buttons to highlight the desired
Setup, and then press ENT to make the selection and be returned to the Data Display screen. The name of the
newly 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 is
shown above. The number of each setup, however, is what appears on the display of the Smart probe.
Instrument Display Smart Probe Display
4.2.5 Volume Adjustment
A speaker at the rear of the instrument produces an audible tone whose frequency increases as the detected level of
gas increases. An earphone when plugged into the instrument’s earphone jack automatically disconnects the
speaker, allowing the operator to listen to the unit’s audible tone in high-noise environments.
SETUP NO. 1
SETUP NO. 2
SETUP NO. 3
SETUP NO. 4
Setup Name
and Numbe
r
0.00 SM
SRCH (1)
Oz/yr
R134A
SETUP NO
SM SRCH
Range: SM, MED, LG
0.00 SM
SRCH (1)
Oz/yr
R134A
SETUP NO
SM SRCH
- Instruction 3015-4342 1
- WARRANTY 2
- Table of Contents 3
- Contents H25-IR 4
- H25-IR Contents 5
- 1 Introduction 7
- 1.2.5 Explosive Atmosphere 8
- 1.2.8 In Case of Malfunction 8
- 1.2.9 Cleaning 8
- 1.3 Ordering Information 9
- Introduction H25-IR 10
- 4 Instruction 3015-4342 10
- 1.6 Functional Overview 11
- 1.7.1 Front View 12
- 1.7.2 Rear View 13
- 1.7.3 Interior 13
- 1.7.4 Standard Probe 14
- 1.7.6 Smart Probe 15
- 1.8 Menu System 16
- 2 Preparing for Operation 17
- 2.5 System Setup 18
- 2.5.3 Relays 19
- 2.5.4 4–20 mA Loop 19
- BRIGHTNESS 20
- 2.6.1 Setup Name 21
- 2.6.2 Range 21
- 2.6.3 Gas Type 22
- 2.6.4 Feedback Mode 22
- 2.6.5 Setpoint 22
- 2.6.6 Search Auto Zero 23
- 18 Instruction 3015-4342 24
- Instruction 3015-4342 19 25
- 20 Instruction 3015-4342 26
- 3 Calibration 27
- 3.2 Internal Calibration 28
- 3.3 External Calibration 29
- 3.4 CAL Factor 30
- Using the CAL Factor 31
- K4=0.0 K5=0.0 32
- Instruction 3015-4342 27 33
- Instruction 3015-4342 34
- 4 Operation 35
- 4.2.3 Range Selection 36
- 4.2.4 Setup Selection 36
- 4.2.5 Volume Adjustment 36
- 4.2.6 Searching for a Leak 37
- 4.2.10 Logged Measurements 39
- 4.3 Fault Conditions 40
- 4.5 RS-232 Communication 41
- 4.6 Serial Output Types 41
- 5 Maintenance 43
- 5.1.2 Last Fault 44
- 5.1.3 IR Emitter 45
- 5.1.4 Pressure 45
- 5.1.5 Loop Test 45
- 5.1.6 Clear Last Fault 45
- 5.2 Factory Menu 46
- 5.2.3 Leak Gas 47
- 5.2.4 Leak Temp 47
- 5.2.5 Leak TEMPCO 47
- 5.2.6 Sensor Cal 47
- 5.2.7 Model Select 48
- 5.3 Flashing Memory 49
- Parts &Service H25-IR 50
- 44 Instruction 3015-4342 50
- H25-IR Operation 51
- 5.4 Part Replacement 52
- 5.4.2 Fuse Replacement 53
- 48 Instruction 3015-4342 54
- 5.4.5.1 Top Cover Removal 55
- 5.4.5.4 DIGIPOT Adjustment 56
- 5.4.5.5 Factory Calibration 56
- 5.5 Replacement Parts 58
- 5.6 Service Centers 59
- H25-IR Specifications 60
- 7 Specifications 66
- H25-IR Appendix A 68
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