Ensure the screwed cable gland safely seals the cable and is tight enough to
prevent water ingress. Unused conduit or cable entries must be sealed with a
stopping (blanking) plug.
A strain relief must be provided for the field wiring cables when the device is
installed with the factory-provided cable glands.
3.2.8
Conduit system
When a threaded conduit system is used instead of a cable gland, the
regulations of the country must be observed. The conduit must have a
½
-in.
NPT tapered thread to match a NPT threaded conduit entry of the level
switch and comply with ANSI B 1.20.1. Unused conduit entries must be
closed tightly with a metal stopping (blanking) plug.
3.2.9
Micro-switch protection
Provide protection for micro-switch contacts to protect the device against
inductive load surges.
3.2.10 Static charging
The Rosemount 2501 must be grounded to avoid a static electrical build-up.
This is particularly important for applications with pneumatic conveying and
non-metallic containers.
3.2.11 Commissioning
Commissioning must be performed with closed lid.
3.3
Wiring the level switch
Wiring connections are done directly on the PCB.
Figure 3-1: PCB Connections
7 6 5
1 2
A
A
B
C
A. Connection terminals for power supply and signal outputs
B. The motor is internally connected to the housing (grounded)
C. Protective Earth (PE) terminal
Quick Start Guide
October 2019
22
Quick Start Guide
