Figure 16 - Installation With Eu Meter - Honeywell STT700 STT700 User Manual

Figure 16 – Installation with EU Meter
3.4.6.2. Maintenance
The unit is designed to give a long service life under normal industrial conditions. However, if
exposed to a large number of high energy transients beyond the capability of the unit, the lightning
protector may fail. The unit has been designed so that, under excessive surge conditions (more than
10 KA), the lightning protector should fail, thus protecting the transmitter.
If the unit has failed, it can be replaced in the field – the process for removal in the reserve of that
for installing the unit.
If a replacement is not immediately available, part number 50133588-501-501, it is possible to
bypass the unit by wiring directly to the transmitter; however, it should be remembered that, in this
case, the transmitter will be unprotected from surges.
STT700 Temperature Transmitter User's Manual
Revision 1 Page 23