Vaisala CARBOCAP MGP260 Serie Installations- Und Sicherheitshinweise Seite 20

3. Insert the probe into the 1.5" female NPT installation port and rotate it clockwise until it
sits firmly in the port. Do not tighten the probe to full tightness, only enough to keep it
securely in place when wiring.
CAUTION!
1.5" female NPT. Installing into any other thread type can damage the
equipment and compromise the leak tightness of the connection. If unsure,
verify the thread type with a 1.5" NPT thread gauge.
CAUTION!
port can tear the PTFE tape. Only adjust the position of the probe in the
installation port by tightening.
a. Note that the pressure compensation input must be set up in order to receive
accurate measurements. An example of an external measurement instrument
placement is shown in this illustration. For pressure input options, see
compensation input options (page
4. Open the captive screws on the connection box flange with a 5 mm (3/16 in) Allen key.
After loosening the captive screws, pull the connection box cover off to access the wiring
terminals.
If necessary, use a wrench to hold the probe in place by gripping the
tightening nut.
CAUTION!
the connection box in an explosion hazardous area when the device is
energized.
5. Lead the wiring cables through the cable glands of the connection box, and then connect
the input, output, and power supply wiring as required in your application. The wiring
diagram in this guide shows an example of wiring the device when all inputs and outputs
are used.
• 5A: External pressure or temperature sensor input wiring (Ex ia): route the cable to
the terminal through the M16x1.5 lead-through and through the strain relief cable
clamp above the component board.
• 5B: Analog output, power supply input and RS-485 wiring: route the cables to the
terminals through the M20x1.5 lead-throughs (1 or 2) and through the strain relief
cable clamp below the component board.
After connecting the wiring, adjust cable length and fasten the cables with the strain relief
clamps.
CAUTION!
separate from the analog output, power supply, and RS-485 wiring (5B).
Always use separate cables on each side of the metal barrier.
16
The correct thread type in which to install MGP260 probes is
Rotating the probe open after it has been installed into the
12).
Connect or disconnect only de-energized wires. Never open
The Ex ia external sensor input wiring (5A) must be kept
Pressure
M212481EN-B