CALIBRATE CO
Measured 480 PPM Applied 500 PPM
06/27/06 11:55:30 PM PRINT

Calibration

5.6 CO-LO Sensor Calibration

Note that the CO-LO sensor also measures H2 for the purpose of com- pensating the CO reading for the presence of H2 in the gas sample. This procedure first spans the CO-LO sensor and, optionally, spans the H2 part of the sensor to known gas levels.

Material Required:

• Calibration Kit, P/N 24-7059

• Gas Cylinder: 500 ppm CO in air, P/N 24-0492

• Gas Cylinder: 1,000 ppm CO & 1,000 ppm H2 in Nitrogen, P/N 24-0794

Procedure:

1.If not already done, turn ON the analyzer and display the CALIBRATION LIST screen per Section 5.2.

2.Use the buttons to highlight CO-LO, and then press ENT to display the CALIBRATE CO screen.

“Measured” is the current CO reading, while “Applied” is a known CO level that will be applied for calibration purposes.

3.Attach a 500 ppm CO cylinder to the regu- lator of the calibration fixture shown in Figure 5-2on Page 5-14.

4.Use the and buttons to enter an Applied value that exactly equals the concen- tration stamped on the CO cylinder.

CALIBRATION LIST

Pressure

T-Stack

T-Air

CO-LO

SO2

NO

NO2

(more)

MENU

F1 F2 F3

The calibration range is from 250 to

1,000 ppm. An attempt to calibrate outside this range will cause the message “Bad Calibration Wrong CAL Entry” to appear in the following step.

5. Adjust the regulator for a flowmeter indica-

tion of approximately 2 SCFH. Wait until F1 F2 F3 the Measured reading stabilizes (approximately 3 minutes), and then press ENT to calibrate the CO Measured value to that of the Applied ­value. The message “Good Calibration” should briefly appear followed by the TEST GAS CO/H2 screen.

If the sensor’s output is low, but still usable, then the message “Good Calibration WARNING Low Sensor” will appear. The sensor will now be marked as being Low in the DIAGNOSTICS screen.

5-8

Instruction 24-9448

Page 73 Page 75
Page 74
Image 74
Bacharach 24-9448 manual CO-LO Sensor Calibration, Procedure
Page 73 Page 75

24-9448 specifications

The Bacharach 24-9448 is a sophisticated instrument designed for detecting and measuring hazardous gases, particularly in environmental and industrial settings. Renowned for its accuracy and reliability, this portable gas analyzer serves a crucial role in ensuring safety and compliance in various applications, including HVAC, refrigeration, and environmental monitoring.

One of the standout features of the 24-9448 is its advanced sensor technology. The device utilizes electrochemical sensors that provide real-time readings of specific gas concentrations, including carbon monoxide, carbon dioxide, and other toxic gases. These sensors are designed to be sensitive and selective, ensuring they deliver precise measurements without interference from other substances in the environment. This is particularly important in industrial settings where multiple gases may be present.

The Bacharach 24-9448 also boasts a user-friendly interface with a clear display that makes it easy for operators to interpret results quickly. The unit features a simple menu navigation system, allowing users to access different functions without hassle. This design consideration enhances usability, especially in high-pressure situations where every second counts.

Portability is another key characteristic of the 24-9448. Weighing in at just a few pounds, it is easy to transport and operate in various locations, whether it be on a job site or in an environmental monitoring scenario. The robust housing is designed to withstand the rigors of fieldwork, ensuring longevity and durability despite challenging conditions.

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In addition to its core capabilities, the Bacharach 24-9448 offers flexibility with adjustable calibration settings, accommodating different gas types and concentration ranges. This adaptability ensures it can meet the specific needs of diverse applications, making it a versatile tool in the field.

Overall, the Bacharach 24-9448 is an essential instrument for professionals in various sectors. Its combination of advanced sensor technology, user-friendly design, portability, and data logging capabilities solidifies its position as a leading choice for gas detection and measurement. Whether for routine checks or emergency responses, this analyzer provides the reliability that ensures safety in potentially hazardous environments.
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