Installation Instructions

Installation Instructions
Document No. 129-900
June 7, 2012
Wet Differential Pressure Sensor
with Manifold Assembly
Item Number 129-900, Rev. AA Page 1 of 3
Product Description
The Siemens Wet Differential Pressure Sensors utilize
a unique, well-proven ceramic technology making
them ideal for applications across a broad spectrum of
industries. These sensors are unidirectional with a
three-valve manifold.
Product Numbers
Product
Number
Burst
Pressure
on High
Side (psi)
Differential
Pressure
Rating (psi)
Differential
pmax.*
(psi)
QBE3190UD25
0 to 25 72
QBE3190UD50
0 to 50 116
QBE3190UD100
543
0 to 100 290
Pressure Rating
CAUTION:
• The maximum manifold pressure rating
is 250 psi.
• * Reference the sensors' pmax. rating.
Exceeding the recommended pressure
will damage the sensor.
Warning/Caution Notations
WARNING:
Personal injury/loss of life may
occur if you do not follow the
procedures as specified.
CAUTION:
Equipment damage/loss of
data may occur if you do not
follow the procedures as
specified.
Contents
• Sensor/manifold assembly
• Rubber gasket
• Non-conduit assembly kit
• Conduit cap
Required Tools
• Thread sealant (Loctite 565 or equivalent)
• (2) crescent wrenches: 1/2”, and 9/16”
• Small, Phillips screwdriver
• Small, flat-blade screwdriver
• (2) 6-32 sheet metal screws or nylon tie wraps
Installation Time
30 minutes
Prerequisites
• Use two male connector compression fittings
with 1/4”-18 NPT threads rated for system
pressure for the HIGH and LOW pressure
ports of the manifold.
• Prepare the fittings with Loctite 565 Thread
Sealant or equivalent anaerobic liquid to
prevent leakage.
CAUTION:
Do not use putty, gasket-type material,
or tape.
Installation
Pressurizing the System
1. Before the system is pressurized ensure that:
a. Valves V1 and V2 are closed.
b. Valve V3 is open.
SEN0635R1
P1
V3
V1 V2
LOWHIGH
Figure 1. Sensor Flow Loop.