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2.5.1 Guidelines for safe use in hazardous conditions
Process connection and partition wall
Gb
Ga
1
2
Figure 6 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).
While installing or uninstalling the device, there is a risk of
flammable gas release or flame entrance.
WARNING!
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
wiring
.
• 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
for screw terminal requirements.
• Use an 18 … 30 VDC power supply with the probe.
• Permitted supply short-circuit current (I
k
): 50 A.
• 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.
Chapter 2 – Product overview
17
陕西威瑞仪器仪表有限公司 生产代理销售:实验检测设备 气象科学仪器设备
Tel:029-88186182 Web:www.xavery.cn Email:[email protected]
Summary of Contents for MGP260 Series
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