Bacharach H25-IR manual Model Select, Probe Type, Firmware, Box Temperature Calibration Screen

Maintenance H25-IR

5.2.7.3 Box Temperature Calibration Screen

ENTER BOX TEMP degC 28.41

OFFSET=0.18 LEAK=28.41

In order to accurately determine when the internal leak source is running out of gas, the enclosure’s temperature sensor must match the temperature of the leak source, as computed using the pressure/ temperature curve for the gas contained in the leak source and the measured pressure of the leak source.

Before making this adjustment, all enclosure lids must be in place and the instrument must be allowed to warm up for at least 30 minutes.

Next, adjust the value displayed on the Box Temperature Calibration screen to match the calculated “LEAK” temperature as displayed in the lower-right corner of the screen. In the example above, set the box temperature for a reading of 28.41 by using the Left and Right buttons to move the blinking cursor across the screen to highlight the digit to be modified, and then using the Up and Down buttons to modify that digit. Press ENT to save the new box temperature value. Note that the “OFFSET” value is the difference between the box temperature sensor reading, and the box temperature reading adjusted to match the leak source temperature.

5.2.8 Model Select

MODEL SELECT

<3015-4348 R134A

3015-4464 R600A

<3015-4465 R600A

The Model Select function is used to set up the instrument’s operating characteristics as defined by its Part Number (refer to Appendix “A”). Use the Up and Down buttons to select the appropriate Part Number (as marked on the instrument’s rear panel). Press ENT to activate the selection.

5.2.9 Probe Type

PROBE TYPE

STD 6ft

STD 12ft

SMART 6 ft

SMART 12 ft

Use the Probe Type function to select the probe type that is connected to the instrument. Use the Up and Down buttons to select the appropriate probe type. Press ENT to activate the selection. Refer to Sections 1.7.4, 1.7.5, and 1.7.6 for descriptions of available probe types.

In the example below, a Smart 6 ft probe has been selected. A message is also displayed warning that if the probe type is changed the instrument must be recalibrated, and the new calibration value must be saved as the default factory calibration as described in Section 5.2.7.2.

SMART 6ft SELECTED

IF CHANGED, YOU MUST

RESET FACTORY CAL

5.2.10 Firmware

REV x.xx COMPILED ON

Month Day Year

At hh:mm:ss

The Firmware screen displays the firmware’s revision number, date, and time of compilation.

42 Instruction 3015-4342