halstrup-walcher P29, Оригинальное руководство пользователя, Страница: 11 / 32

P29 Instruction Manual
11
Instrument description
4.1 Features
The P29 is controlled by a microprocessor and can perform the following tasks:

Measurement of differential pressure

Measurement of volumetric flow, mass flow and flow rate using the orifice plate

Display of a measured value

Monitoring of a variety of threshold parameters

The instrument may be used in systems with natural gas under strict observance of
the methods stated in Section 3
-
+
Actual pressure value
Calculation:
Volumetric flow
Mass flow
Flow rate
µC
Pressure measurement
Valves
pos. pressure
neg. pressure
Display
Serial
interface
Relay
Keyboard
Analogue output signal
figure 4-1 functional description
4.2 User interfaces
The following four keys are available:
Menu
UP Right Enter
Key Meaning (Measurement Mode) Meaning (Menu)
Menu Start Menu Go back a menu level
Enter Start zero-point calibration Confirm
Up arrow Max. display Increases a value or scrolls up
Right
arrow Min. display Moves the arrow or scrolls down
In measurement mode, the keys perform the following functions:
The Enter key starts a zero-point calibration
▲- key shows the maximum (to reset: press Enter while the maximum is being displayed)
►- key shows the minimum (to reset: press Enter while the minimum is being displayed)
When the air consumption function is activated, the keys perform the following functions:
The Enter key starts a zero-point calibration