TESTO 6681 Profibus, Инструкция по эксплуатации

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testo 6681
- 1.2 Product description
1.2.2 Usable probes
The testo 6681 humidity transmitter can be used with the following probes:
probe Article no. Characteristic
testo 6611 0555 6610-L11 Wall probe version; accuracy to ± 1 % RH;
temperature range -20 °C to +70 °C/-4 to +158 °F
testo 6612 0555 6610-L12 Duct probe version; accuracy to ± 1 % RH;
temperature range -30 °C to +150°C/-22 to +302 °F
testo 6613 0555 6610-L13 Cable probe version; accuracy to ± 1 % RH;
temperature range -70 bis +180 °C/-94...+356 °F
testo 6614 0555 6610-L14 Heated cable probe version; accuracy to
± 1.0 % RH; temperature range -40 °C to +180 °C/
-40 to +356 °F
testo 6615 0555 6610-L15 Trace humidity cable probe version;
dew point to -60 °Ctd;
temperature range -40 °C to +120°C/-40 to +248 °F
testo 6617 0555 6610-L17 Cable with cover electrode monitoring probe
version; temperature range -40 °C to +180 °C/-40
to +356 °F
1.2.3 Display and keypad
The display option allows the testo 6681 humidity transmitter to be operated
via the display and four keys.
The LCD display consists of two 7-segment lines for displaying readings and
units and of an information line (for status messages, for example).
The brightness and contrast of the display and the background lighting
(permanent or off) can be changed via the user menu or the P2A software.
1.2.4 Service interface
Behind the service flap is the parameterizing socket (mini-DIN) as an
interface to the P2A software.
1.2.5 Relay board (option)
This has a floating switch capacity of 250 V AC/3 A. The switching limits and
hysteresis as well as the function as relay for the collective alarm can be set
via the display or the P2A software. Further features include:
•
Function of changeover contacts (NC/NO contacts) freely selectable