E+E Elektronik EE33, Руководство пользователя

Страница: 16 / 40

16
EE33 Humidity / Temperature Sensor for High Humidity and Chemical Applications
stop valve stop valve
1/2" ISO or 1/2" NPT
inside diameter
≥ 13 mm
(0.55")
metal sealing ring
fixed installation
(pressure tight up
to 20 bar
(300 psi)
)
For direct probe installation, a stop valve should
be provided on both sides of the probe insert.
This allows the sensor probe to be removed for
maintenance and calibration without any problems.
If the sensor probe is installed in a pressure
chamber, make sure that the pressure in the
chamber and the ambient pressure are in
equilibrium before you remove the probe.
The temperature during installation may not vary
more than ±4 °C (±72 °F) from the operating
temperature.
ƒ
Step 1:
Install the probe with the stop valves closed.
ƒ
Step 2:
Insert the sensor probe into the process.
ƒ
Step 3:
To ensure a secure installation of the probe, the
lock nut must be tightened to a defined torque of
30 Nm.
If no torque-spanner is available tighten the lock
nut by hand as far as possible. Continue to turn
with an open-ended spanner ~50°.
5.6 Remote Sensing Probes Type T17
The sensing probe must be mounted
horizontally or vertically, pointing
downwards. If possible, a drip sheet should
be fitted for each mounting.
Mounting the two probes, please make sure that
the minimum distance is 10 cm (4").
code “cable length”
code “cable length”
code “probe length”
∅
12
(0.5")
150
(5.9")
∅
6
(0.25")
1/2" ISO or 1/2" NPT
1/2" ISO or 1/2" NPT
Temperature range sensing probe: -40...180 °C
(-40...356 °F)
Pressure range: 0.01...20 bar
(0.15...300 psi)
Pressure tight screw connection:
The screw connections for pressure tight installation up to 20 bar
(300 psi)
are available as accessories
(see chapter 12 Replacement Parts / Accessories). For screw assembly refer to chapter 5.4.
Instructions for installation in a high-humidity environment:
If the process temperature differs significantly from the ambient temperature, the sensing probe should
be fully emerged in the process to avoid incorrect measurements and condensation problems on the
sensor head due to thermal conductivity.
It is recommended not to bring the sensing probe and colder metal parts in direct contact in order to
avoid condensation problems caused by thermal conductivity.
The humidity probe (12 mm
(1/2")
) and the temperature probe (6 mm
(1/4")
) must be mounted at the
same temperature level respectivily same installation height.