Vaisala CARBOCAP MGP260 Serie Installations- Und Sicherheitshinweise Seite 11

Guidelines for safe use in hazardous conditions
Process connection and partition wall
1
Gb
Figure 1 MGP260 Ga/Gb division
1 The part outside of the process (up until to the NPT 1.5" connection thread) complies with
the Gb Equipment Protection Level (EPL).
2 The part inside the process (starting from the NPT 1.5" thread) complies with the Ga EPL.
The partition wall is made of stainless steel, sapphire glass, and silicone adhesive. The
stress limit temperature range of the silicone adhesive is -40 ... +60 °C (-40 ... +140 °F).
WARNING!
flammable gas release or flame entrance.
Wiring requirements
• The wiring of the optional intrinsically safe (Ex ia) external pressure or temperature sensor
input terminal must be kept separate from the analog output, power supply input, and
RS-485 wiring.
• See the installation overview and installation instructions for more information.
• The cable glands and cables used for wiring the device must not impair the Ex protection.
• US/CAN: The cables used for wiring must have a flammability rating of UL 2556 VW-1
or equivalent.
• Unused lead-throughs must be sealed using Ex compliant plugs.
• See Table 2 (page 8)
• Use an 18 ... 30 VDC power supply with the probe.
• Permitted supply short-circuit current (I
• US/CAN: only use a UL listed 18 ... 30 VDC (min. 6 W) power supply. The power supply
must be UL/CSA 60950-1 certified.
• MGP260 analog outputs must be externally powered.
CAUTION!
input before completing the wiring and closing the connection box.
While installing or uninstalling the device, there is a risk of
for screw terminal requirements.
Connect only de-energized wires. Never switch on the power supply
2
Ga
): 50 A.
k
7