Barksdale Inc.
3211 Fruitland Avenue
Los Angeles, CA 90058-0843
U.S.A.
Phone: (323) 589 - 6181
Fax: (323) 589 - 3463
www.barksdale.com
See Barksdale’s Standard Conditions of Sale • Speci cations are subject to modi cation at any time
Bulletin #272280 A • 07/09 • ©2009 • Printed in the U.S.A.
Dimensions (in)
Electrical connections
Operating Instructions Solid State Dual Switch UDS7-BX
1. Product description
2. Starting operations
Intended Applications
- This dual pressure switch is a device to monitor system pressure and has up to two switching
outputs and one analog output.
- This instrument should only be installed in systems where the maximum pressure (Pmax) is not
exceeded, according to the values on the type label.
- Attention: This device is not designed to be used as the only safety relevant element in a
pressurized system according to PED 97/23/EC.
Caution: To reduce the risk of ignition of hazardous atmospheres, disconnect the device from the
supply circuit before opening. Keep assembly tightly closed when in operation.
Only assemble or disassemble the device with no pressure applied!
Connecting the switch
- Mount the pressure switch from bottom to the tting with a wrench and no more than
45 Nm torque.
- Electrical connection: 3/4“ NPT female. Seal with certi ed junction box.
- Process connection: 1/4“ NPT female (std).
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Voltage (Ub): 15-28 VDC
Analog: 4-20 mA or 0-10 voltage
Common (-)
SP1: 0.4 A Max
SP2: 0.4 A Max
Internal Ground
Terminal
Connection
6-Position
Description
UDS7-BX
14
The setting menu is activated with the mode
key. The dialog items are selected with the “ “
and “ “ keys. If the mode key is pressed again the corresponding value for the dialog item is
shown and can be altered with the “ “ and “ “ keys. If the dialog with the unit is not continued
within two minutes the device auto-matically returns to the measuring mode without accepting the
new values.
To terminate programming more quickly, you can switch back to the measuring mode (primary
menu) from any item in the menu by pressing and holding the M-key for ve seconds.
If the programming lock has been activated, the values can be shown, but no changes made,
i.e. when Level 0 is active (“LOCK“ appears in the display when an attempt is made to change
values).
The pressure switch should be installed and operated only by authorized persons.
After being switched on the UDS7-BX runs through a self-test. The device is menu operated and
con gured with three keys on the front.
With the “M“ key (= mode) you change between the dialog values and the adjusted/actual values.
With the keys “ “ = up and “ “= down you change between the dialog values in the menu or
change the
values/functions in the menus (see below: “List of functions“).
If the dialog is not continued within two minutes the device automatically returns to the measuring
mode. When the programming lock is entered, “LOCK“ appears in the display when an attempt
is made to change values.
Programming:
Operation:
4-20 mA/0-10V
CE 0081
ISSeP 09 ATEX 034X
II 2 G D
Ex d IIC T6
Ex tD A21 IP65 T80°C
-40°C ≤Tamb ≤ +60°C
Agency Approvals:
For models shipped before November 23, 2013
(4 pages)
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