Type Tb4042 Sensor - ABB TB404 Operating Instruction

INSTALLATION
LOCATION CONSIDERATIONS
2 - 2
15/16-20
THREADS
116.8
4.60
SENSING AREA
(DONUT)
SENSOR BORE
Figure 2-1. Type TB4042 Sensor
The sensing area must be completely immersed into the fluid (Fig. 2-2).
•
Partial and varying immersion will cause measurement errors.
The sensor position within the process pipe or any container during cal-
•
ibration must not cause air entrapment around the sensing area.
The sensor cable should be housed in a flexible type of metal or shielded
•
conduit to minimize the effects of radio frequency interference (RFI)
and electromagnetic interference (EMI). Submersion sensors require
nonflexible piping or conduit.
The sensor position must not allow accumulation of excess sediment or
•
other foreign material around the sensing area.
The sensor position must insure that the internal temperature sensor is
•
facing into the fluid flow path.
NOTE: The temperature sensor is located at the sensing area on
the same side as the embossed PEEK insignia (Fig. 2-1).
Lubricate all O-rings with a silicone grease or equivalent before assem-
•
bling the sensor into the installation hardware.
FLA T INDICA TES SENSING
AREA ORIENT A TION
O-RINGS
PEEK BOD Y
TEMPERA TURE SENSOR
LOCA TION
DIMENSIONS
MILLIMETERS
INCHES
36.1
1.42
T00872A