Martel Electronics BetaGauge 330 User Manual
Page 10
Table 4 Mode Concurrency
CURRENT DISPLAY
P[1] [EXT] P[1] [EXT]
mA mA
Volts RTD
ST
ST
Loop
P[1]
[EXT]
P[1]ST
X
X
X
X
X
[EXT]ST
X
X
X
X
X
mA
X
X
X
X
mA Loop
X
X
X
X
Volts
X
X
X
X
RTD
X = Not a valid mode
2.1.1.3 Accessing Other Menus
Use the MORE option on the Main Menu to access the other menu functions.
2.2 Using the Backlight
The backlight is controlled by the LIGHT softkey on the main menu on the models with
electric pump. The 330-300 psi has a dedicated backlight key. It toggles on and off when
the key is pressed; this is one of the few functions that cannot be controlled by the serial
interface. There are no user configuration settings for the backlight.
2.3 Using the Zero Function
When the ZERO KEY is pressed, the calibrator will zero the active display if a pressure
mode is selected, and the pressure is within the zero limit. The zero limits are within 10%
of the full scale range of the selected sensor. If the display indicates “OL,” the zero
function will not operate.” Note: The ZERO KEY is only used for pressure.
2.3.1 Internal Sensor and Pressure Module (non-absolute)
When a sensor or module is selected on the active display and the ZERO KEY is pressed
the calibrator subtracts the current reading from the output. The zero limits are within 10%
of the full scale range of the selected sensor. If the display indicates “OL,” the zero
function will not operate.
2.3.2 Absolute Pressure
When an absolute pressure range is selected on the active display and the ZERO KEY is
pressed the calibrator prompts the user to enter the barometric reference pressure. This
is done using the arrow keys (F2 and F3 Keys). The sensor port should be open (vented)
to atmosphere while performing this procedure.
8
OTHER DISPLA
YS