Installation option: ball valve installation - MGP261 - MGP262

MGP260 User Guide

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User guide
Figure 1. MGP260 ball valve installation example with wiring routes and recommended orientation and depth.
Figure 1 shows an example MGP260 ball valve installation. The figure highlights the correct wiring routes and shows the recommended installation depth and orientation.

An external pressure measurement instrument (item 5) is shown as an example of pressure compensation input options. For a description of alternative pressure compensation options, see Pressure compensation input options .

External pressure or temperature sensor input wiring (Ex ia): use the M16x1.5 lead-through and route the cable directly to the terminal.
Standard analog output, power supply input, and RS-485 communication wiring: use the M20x1.5 lead-throughs and route the cables to the terminals through the openings below the component board.
Metal barrier separating the intrinsically safe external sensor input terminals (optional, for environmental compensation input) from the analog output, power supply input, and RS-485 terminals on the component board.
1.5" male NPT thread on MGP260: never install to any other thread type than 1.5" female NPT. Note that when installing through a ball valve, it is necessary to use a 2" ball valve with a 1.5" thread reducer in order to accommodate the probe head (diameter 1.57").
Example pressure compensation input option: an external measurement instrument connected to the MGP260 Ex ia input terminals (item 1).

Threaded stub welded to the pipe wall for ball valve process connection.

For best results, install MGP260 horizontally. The recommended position for the tip of the filter is within 1/3 of the pipe's diameter from the pipe centerline. If this is not achievable, other positions inside the pipe can be used as well. In smaller pipes, the installation depth can be adjusted by using an adapter such as the ball valve in this example.
Note that when using a ball valve to install MGP260, it is necessary to use a 2" ball valve and a reducer in order to accommodate the probe head (diameter 1.57").
CAUTION Always use a separate cable for the external pressure or temperature sensor input (Ex ia) wiring (1), and make sure the wiring remains separated from the terminals and wiring (2) on the other side of the metal barrier (3) on the component board.