Specifications

HYDROLOGICAL SERVICES
DL3 100-06 IMP
Issue 2: 15/11/2005
TBRG Voltage
free contact
Black Connector Pin K
Black Connector Pin H
RRDL-3 Logger
Black Connector Pin J
Link used in rain only or
rain+analog river systems to
give “connect” / “disconnect”
message in rain log.
3.Installation
3.1Hardware Connections
The external connections to the RRDL-3 varies depending on the user configuration.
Tipping Bucket Rain Gauge (TBRG).
Quadrature or 4-20mA River Height Sensor.
Standalone, direct connect communications to a PC or communications to a PC through a
modem.
Internal or external batteries.
The 10 pin connector with the black marking on the logger is setup as follows :-
Optional External Smart Sensor + Internal Batteries
Pin Connection Signal Name
A Smart Sensor Isolated Tx
B Smart Sensor Isolated Rx
C Smart Sensor Isolated Gnd
D Not Connected
E Not Connected
F Ext. Sensor Control (Not Implemented)
H Bucket Tip
J Quadrature A
K Digital Sensor Gnd
L Quadrature B
3.1.1 Tipping Bucket Rain Gauge (TBRG)
Connection of Tipping Bucket Rain Gauge (TBRG)