WIKA operating instructions models DIH50, DIH52
13
EN
14008548.05 12/2016 EN/DE
Avoid exposure to the following factors:
■
Direct sunlight or proximity to hot objects
■
Mechanical vibration, mechanical shock (putting it down hard)
■
Soot, vapour, dust and corrosive gases
6. Commissioning, operation
In hazardous areas, only use field indicators that are approved for those
hazardous areas. The approval is marked on the product label.
6.1 Operating modes
The following operating modes are possible:
■
HART
®
slave / basic mode (4 ... 20 mA)
■
HART
®
master / basic mode / multidrop (model DIH52)
6.1.1 Operating mode: HART
®
slave (models DIH50, DIH52)
The digital indicators powered via the same current loop as the corresponding transmitters
monitor permanently the HART
®
communication. When modifying the unit or measuring
range of the connected transmitter, the unit of the digital indicator and the corresponding
indication range are adapted automatically.
However, it is required that the unit set in the transmitter is also set in the devices.
A flashing ♥ symbol is shown on the display when a HART
®
communication takes place for
the first time and the digital indicators are thus switched to the HART
®
mode. The ♥ symbol
is displayed permanently when the HART
®
communication is terminated and the digital
indicator is configured according to the measuring range and the unit of the connected
transmitter.
After the power supply was interrupted or the digital indicator was set manually, the ♥
symbol is no longer displayed.
During operation in the basic mode, the ♥ symbol is not displayed.
CAUTION!
The instruments react only to the HART
®
standard commands 15 and 35. If
a connected HART
®
transmitter is configured by means of other commands,
automatic setting is not possible!
The HART
®
function, i.e. the automatic adaptation of the display to the
configured data of the transmitter, requires a HART
®
communication between
the transmitter and the HART
®
software (e.g. WIKA_T32) or between the
transmitter and the field communicator (e.g. FC375/FC475, MFC4150 etc.).
5. Transport, packaging ... / 6. Commissioning, operation
