Display And Keypad; Service Interface; Relay Board (Option); Analog Outputs - TESTO 6381 Instruction Manual

Probes Article no.
testo 6617 0555 6610-L17 Cable with cover electrode monitoring probe
4.2.3.

Display and keypad

The display option allows operation of the testo 6381 transmitter 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.
4.2.4.

Service interface

The parameterizing socket (mini-DIN) is located behind the service
flap as an interface to the P2A software or Testo handheld
instrument (testo 400/testo 650).
4.2.5.

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
• 12 terminals for a total of 4 relays.
4.2.6.

Analog outputs

As analog outputs, the testo 6381 has either
• 1 or optionally 3 current outputs of 0 to 20 mA (4-wire)/4 to
20 mA (4-wire) or
Characteristic
version; accuracy to ± 1.2 % RH; temperature
range -40 to 180 °C/
-40 to +356 °F, sensor soldered
If no relays are available, settings for monitoring limit values
or alarms can still be controlled via the display. The alarm
status will be shown on the display.
Only have the transmitter wired and connected by
authorized personnel with the voltage disconnected.
4 Transmitter
15