2 | GE Oil & Gas
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Brief User Guide
This is a quick guide to connecting the instrument for the conven-
ience of personnel who are familiar with this type of product�
More comprehensive instructions are contained later in this
manual:
1. Connect a clean air supply of about 2�0 bar (30 psig for
the 3-15 psig output model, or 2�4 bar (35 psig) for the
6-30 psig output model) to the IN port (1/4" NPT)�
2. Connect a pressure gauge or actuator to the OUT port�
DO NOT use PTFE tape or similar to seal the ports� Use
a minimum of soft setting anaerobic compound, e�g�
Loctite Hydraulic Seal 542�
3. Unscrew the lid to obtain access to the terminals�
The cable will need to be sealed by an approved gland
for explosion-proof installation�
The second un-used conduit entry must be sealed with
an explosion-proof blanking plug�
4. Connect a 4-20mA current source, either through the Jack-
Plug source or Terminal connections� Ensure that it can
supply at least 6�5V at 20mA� Check for correct polarity�
DO NOT use a voltage source; it will irreversibly damage
the converter�
5. Switch on the air supply and current source and allow a
few seconds stabilisation time� Adjust span and zero via
the trimpots if necessary�
If the instrument fails to operate refer to the Simple Functional
Checks�
General Description
These converters are precision electronic pressure controllers
designed for continuous process control applications� The units
operate a closed loop system incorporating a feedback sensor
ensuring long-term stability and high accuracy performance,
with ‘fail-safe’ operation, i�e� the output falls to a low pressure
upon failure of the loop current�
These instruments combine substantial flow capacity, with the
ability to give precise control into closed volume ‘dead end’
applications�
The instrument has been designed to withstand the rigours
of industrial environments; such as shock, vibration and
positional effects� As with any other precision instrument
dropping the unit onto a hard surface may result in shifts in
calibration or possibly permanent damage� The unit may be
mounted directly upon a control valve� A mounting bracket is
provided for surface mounting, or the instrument may be fixed
directly to rigid pipework�
The electronics are enclosed within a watertight housing,
which is suitable for outdoor use if a suitable cable gland is
used� The lid should be firmly tightened, the use of a tool for
this purpose is not recommended�
Figure 1
JACK SOCKET: TO CALIBRATE UNIT ON
INSTALLATION USING A 4-20MA INPUT SIGNAL�
WHEN USING JACK PLUG A SIGNAL DOES NOT HAVE
TO BE SUPPLIED VIA THE TERMINAL BLOCK� THE
INPUT SIGNAL CAN BE MONITORED THROUGH THE
JACK PLUG SOCKET WHEN UNIT IS IN OPERATION�
1/2"NPT or M20
Conduit Entry
3�5mm Jack Socket
Alternative Power
Supply & Monitor
Span
Zero
Tight Shut Off
4-20mA Input Terminals
1/2"NPT or M20
Conduit Entry
Lid Locking
External Earth
1/8" Gauge Port
External Earth
Air Filter;
DO NOT REMOVE WHEN PRESSURIZED�
DO NOT USE WITH FILTER REMOVED�
Air Filter� BS2000 with 98% efficiency @
2µM with water and oil absorption�
Internal Earth
