dkc5127a0600p_01 - 3/5
3.3 SPECIAL CONDITIONS OF SAFE USE
Make sure the installation is complete with no visible defects before turning on the
device.
The device may only be used within the limitations specified in the technical
specifications.
Ex ia certified transmitters may only be operated in certified and approved intrinsically
safe Ex ia IIC circuits complying with the technical data and the device’s explosion
protection marking.
The metal housing of the device must be connected to the EP (equipotential) network!
4. INSTALLATION
To enable the safe replacement of the instrument during operation the use of closing armature
is recommended. A simple ball valve will be suitable for lower pressures and for higher
pressures (above 6 bar [87 psig]) a three-way blow-off needle-valve can be suggested.
Treat the sensor diaphragm with utmost care; as this part can be damaged very easily.
Remove the packaging and protective cap just before the beginning of the assembly to avoid
the damage of the diaphragm. Keep the protective cap! In case if the installing of the unit is
not immediate, the protective cap must be reinstated as soon as possible!
The display and the operating module are equipped with a turning limiter. Do not rotate the
display beyond the rotation limits.
When installing the device, avoid high mechanical stresses on the pressure port! This will result
in a shift of the characteristic curve or to damage.
The device can be installed in-, or outdoors. Select the mounting position such that there is
enough space for installation, programming and reading of the display. Do not expose the
device to direct sunlight when using outdoors! Direct solar radiation might cause that the
permissible operating temperature of the device would be exceeded. This is to be particularly
avoided in case if the device is used in any explosion-hazardous area! Select the operating
position, so that splashed and condensed water can be drained off. If the device has cable
outlet, the outgoing cable must be routed downwards. If the cable needed to be routed
upwards, this must be done in an initially downward curve.
4.1 INSTALLATION INSTRUCTION
Install the device only in a depressurized and disconnected state!
The medium may be dangerous; therefore, suitable protective clothing, gloves, and goggles
are required for the installation process.
Torque must only be transmitted to the hexagonal screw on the instrument body (torque
wrench). When installing the device, avoid applying strong mechanical stress on the pressure
port! It will result in a shift of the characteristic curve or damage the device.
The transmitter housing is grounded to suppress electronic noise. If the grounding of the device
is correct, no further grounding is needed, otherwise the instrument must be grounded.
Mounting position: The pressure switch has been calibrated in a vertical position when the
diaphragm is oriented downwards. If it is differently mounted, a tiny deviation can appear at
the output in the measured values.
For oxygen applications (only DK-600) transmitters are recommended with O-rings of FKM
Vi 567: permissible maximum values: 25 bar / 150°C (362.6 psig / 302°F) (BAM approval),
over 25 bar (362.6 psig) pressure transmitters can be used without seals.
Tightening torques:
¼ ” BSP:
max. 5 Nm;
¾ ” BSP: max. 15 Nm;
½ ” BSP: max. 10 Nm;
1” BSP: max. 20 Nm;
¼ " NPT: max. 30 Nm;
½ " NPT: max. 70 Nm.
The specified tightening torques must not be exceeded!
Do not use a pipe wrench, because its use can cause damage to the device!
Installation steps for BSP process connection (DIN 3852):
Do not use any additional sealing material such as Teflon tape!
Check if the O-ring is undamaged, its surface is flawless and clean and it is seated in the
designated groove. Screw the device into the correct thread by hand! If your device is secured
with a knurled ring instead of a hexagonal screw, the pressure transmitter must only be
tightened by hand! Devices with hexagonal screw mounting must be tightened using an open-
ended wrench (torque wrench)!
Installation steps for NPT process connection:
Use suitable seal (e.g., a PTFE-strip)! Screw the device into the correct thread by hand, and
tighten it with a wrench!
Installation steps for hygienic connections (only DK-700, DL-700)
Check if the O-ring is undamaged, its surface is flawless and clean and it is seated in the
designated groove. Screw the device into the correct thread by hand! Centre the dairy pipe
connection in the counterpart! Screw the cup nut onto the mounting
part! Tighten it with a hook wrench!
Installation steps for „TRICLAMP and VARIVENT” connections (only DK-700, DL-700)
Use a suitable seal corresponding to the medium and the pressure input! Place the seal onto
the corresponding mounting part! Centre the TRICLAMP or VARIVENT connection on the
fitting counterpart with seal! Then fit the device with a suitable fastening element (e. g. half-
ring or retractable ring clamp) according to the supplier’s instructions.
5. WIRING
Use a shielded and twisted multicore cable for the electrical connection.
For devices with cable gland, make sure that the external diameter of the cable used is within
the allowed clamping range! Once connected the wires, tighten the gland screw firmly until
the sealing is proper!
The bending radiuses of the cables have to comply with the following:
Cable without ventilation tube:
-
static installation: 8-fold cable diameter,
-
dynamic application: 12-fold cable diameter.
Cable with ventilation tube:
-
static installation: 10-fold cable diameter,
-
dynamic application: 20-fold cable diameter.
5.1 WIRING
W
ITH
2-
WIRE TRANSMITTER
W
ITH
3-
WIRE TRANSMITTER
M12x1 (5-pin, metal) pin configuration
Electrical connection
M12x1 (5-pin)
Power
1
Power supply -
3
3-wire:
2
Switching output 1
4
Switching output 2 (optional)
5
Shield
housing / pressure port
5.2 ARRANGEMENT EXAMPLES
PRESSURE SWITCH
(1-2 SWITCHING OUTPUTS)
WIRING OF 3-WIRE PRESSURE SWITCH WITH
TRANSMITTER OUTPUT
6. PROGRAMMING
6.1 CONFIGURATION
According to the order, the device has max. 2 PNP contacts.
The status of the outputs is indicated by 2 LEDs. The LEDs
will light up when the respective point has been reached, and
the contact is active. The green LED 1 is on if switching point
1 is reached and the switch output 1 is active. The yellow
LED 2 lights up when switching point 2 is reached, and the
switch output 2 is active (optional).
Regardless of the number of PNP switches, the menu
structure is the same for all device types. They differ only in
the number of menu items. Following the chart (6.5) and the menu list (6.6) they guide you
through all possible menu items.
The 4-digit 7-segment display shows the measured value and provides information about the
menu items.
The two buttons below the display are for moving in the menu and setting the parameters.
Button
“ ”
:
moves forward in the menu system or increases the displayed value.
Button
“ ”
:
moves backwards in the menu system or decreases the displayed value.
Pressing the two buttons simultaneously:
pressing both buttons at the same time changes
between display mode and configuration mode and confirms the menu items and values.
When setting the values, the counting speed can be increased by holding down the up or down
key for more than 5 seconds.
The menu navigation is a wrap-around system scrolling both forward and backward through
the individual set-up menus to the desired item.
Changes take effect only after pressing the two buttons together and leaving the menu item.
All settings are stored permanently in an EEPROM so settings will not be forgotten even after
disconnecting from the supply voltage.
6.2 PASSWORD
The menu system of the device can be protected by a password, so it is only possible for
authorized persons to change the settings. If password access ("PAon") is activated, the entire
menu system will be locked. For more information, see "6.6 Description of the Menu System."
Entering the password will make the entire menu accessible again, and the password can be
changed in the special menu item 4. If the password is lost or forgotten, restore the factory
default settings of the device.
Use the special menu item 4 to do so.