User guide
Revision 1.5 Page 6 of 19
Warning
Please Note
The specifications of the product detailed on this
Set-Up Guide may change without notice. RDM
Ltd. shall not be liable for errors or for incidental
or consequential damages, directly and indirectly,
in connection with the furnishing, performance or
misuse of this product or document.
Ensure that all power is
switched off before
installing or maintaining
this product
Mercury 2 & Intuitive Mercury Mini-Pack Installation Guide
www.resourcedm.com
Mercury
Pressure Transducer Connection
The controller uses an external 4-20ma interface board (PR0722) which allows a pressure transducer to be connected to the probe 6
input. Pressure transducers must be of the current loop 4-20mA type. Excitation voltage (12 Vdc) is provided for the transducer. The
range of the transducer will vary according to the application, the Span and Offset parameters allow for this.
Issue 2 Interface has a 4-20mA input and a 0 – 10V input for transducer.
Note: The PR0722 works with PT1000 probes only (units selected as 0 or 1)
Note: Interface Board PR0722 Issue 1 is now obsolete and is superseded by Interface Board PR0722 Issue 2
The RJ45 socket labelled as “Mercury Controller” on the interface board connects to the Mercury Mini Pack controllers RS232 Comms
port. A standard CAT5 patch lead should be used. Maximum cable length 0.1m.
The Connector labelled “Probe INP” connects to Input 6 on the Mercury controller’s Probe 6 input. Maximum cable length 0.1m.
Setting up the controller
Access to the controller can be achieved several ways
Through the front mounted buttons
Direct access by PC or palm top into the controller’s RS232 comms port. This requires a software package available on the
RDM website
Through legacy front end panels on 485 networks
Through the RDM Data Manager.
Across an IP network. (Current controller IP address required)
Mercury Controller
RS232 Socket
Probe 6 Input (Green)
Probe 6 Ground (Black)
Network Interface
4-20mA Input
12V Supply
Pressure
Transducer
Interface Board
PR0722
Interface Board
PR0722
Issue 1
Interface Board
PR0722
Issue 2