ONLINE ELECTRONICS LTD
600_5001_A01
Page 10 of 12
8.
Perform a FUNCTION TEST as described in Section 4 to confirm that the unit is functioning
as expected.
4.5.
DUAL RATE
600 Series Pingers with the DUAL RATE option are
configured with two different ping rates and are typically
fitted with an IE55(W)-10-CCP 3-Way subsea connector
with the tail moulded into the transducer. Socket 1 is the
GND connection, Socket 2 is the DUAL RATE Rate/RX
connection and Socket 3 is the TX connection.
When the pinger is active and the DUAL RATE contact is shorted to the GND connection, the
pinger will transmit at Ping Rate 1 (the Pass Ping Rate or PPR).
When the pinger is active and the DUAL RATE contact is open (resistance to GND > 3k), the
pinger will transmit at Ping Rate 2 the (the Fail Ping Rate or FPR).
The contacts are usually controlled by an external piece of equipment, such as an OEL 7001
BWGP, but may also be opened or closed mechanically. Refer to Page 2 of this manual for the
ping rates of the unit supplied with this manual.
4.6.
GRID
Like the DUAL RATE units, units with GRID™ (GAUGING RUN INTEGRITY DATA) functionality
are typically fitted an IE55(W)-10-CCP 3-Way subsea connector tail moulded into the
transducer. The functionality of the GRID™ units is similar those with DUAL RATE except that
the unit also logs the time of a gauge plate event and then transmits it at set intervals as a
series of acoustic pulses. These pulses can then be decoded in order to determine the location
at which the gauge plate occurred without the need to recover the pig first. Interfacing the
unit with an ARGF ring, in addition to the standard BWGP allows the unit to log multiple
pipeline events. The connections are the same as for the DUAL RATE above but with Socket 2
as the BWGP/RX connection and Socket 3 as the TX/ARGF connection. Please see the separate
GRID™ Manual for a full explanation of the GRID™ system functionality.
4.7.
DELAYED START
Upon activation, a unit with DELAYED START functionality enters into a low powered “sleep
mode” for a pre-configured amount of time in order to conserve battery life. Once the
programmed delay has elapsed, the unit will start pinging as per a standard 600 series unit.
In order to confirm that the unit is operating correctly, the unit transmits at the standard pulse
rate for 55 seconds, pauses for 5 seconds and then transmits the pre-programmed DELAYED
START TIME as a coded series of pulses (see GRID™ Manual for instructions on how to decode
the signal). The unit will then transmit at the standard rate for a further minute before
