Geist Leak Detection Kit User Manual
POWER/ALARM
LD300
LEAK DETECTION KIT
Your Leak Detection Kit should include the following items:
LD300
+5V power
Control Box
one or more lengths of
orange “Leak Detection
Cable” (quantity and
length(s) of cable(s) will
depend on which kit and
additional cables, if any,
were ordered.)
15ft (3m)
supply
“Leader Cable”
accessory hardware
includes hex key to open
LD300 control box, wall-
mounting hardware, and self-
adhesive J-clips for securing
the sensing cable(s) in place
50ft (16.7m) of 4-
conductor alarm
wire (to connect
LD300 control box to
monitoring unit)
Terminator Plug
(note: not all kits will
include this; some kits
have one end of the orange
leak-detection cable
permanently terminated,
and do not require a
separate terminator plug)
Leak Detection Kit quick setup guide (rev.131111B-GD) 1
POWER/ALARM
LD300
use hex key to remove the two setscrews in the
bottom corners, then lift and push back the cover
to remove it from the control box, as shown here.
sensitivity
jumper
status
LED
+5VDC
}
“Fault”
relay contacts
}
}
}
“Leak”
relay contacts
relay mode
jumper
sensing cable
connections
Leak Detection Kit quick setup guide (rev.131111B-GD) 2
SENSITIVITY jumper:
Adjusts the sensitivity to dampness along the detection cable. The default setting is
low, which is generally sufficient for detecting spills from broken pipes or overflowing
tanks; however, if your particular application involves smaller leaks, such as from an
air-conditioner’s drip pan, the medium or high sensitivity settings may be required instead.
Higher sensitivity may also be required if you need to detect leaks of distilled or deionized
water, or other fluids which are only weakly conductive. You may need to experiment to
find the best setting for your particular requirements. (Note: if you change this jumper
setting, you must power-cycle the LD300 for it to recognize the change.)
LOW
(alarms on 6” (152mm)
of wetted cable)
MEDIUM
(alarms on 2” (51mm)
of wetted cable)
(13mm) of wetted cable)
HIGH
(alarms on 0.5”
RELAY MODE jumper:
Controls the behavior of the output relays when a leak-detection or cable-fault event
occurs. In “supervised” mode, both relays are energized when conditions normal, and
de-energize when an alert occurs; in “non-supervised” mode, the relays are de-energized
when conditions are normal, and energized when an alert occurs. This action is illustrated
by the diagrams below: (Note that the terms “normally open” (NO) and “normally
closed” (NC), when describing relay actions, refer to the state of the relay contacts in the
relay’s “normal”, i.e. de-energized state, not to “normal” as in normal room conditions!)
contact pair is open
X
contact pair is closed
NON-
SUPERVISED
(no alarm condition)
FAULT
NC NCNONOCC
LEAK
leak detected
FAULT
LEAK
NC NCNONOCC
cable fault
FAULT
LEAK
NC NCNONOCC
MODE
X X
with no alarm condition,
both relays are de-
energized, and the NC
contact pairs are closed.
X
X
when water is detected
on the cable, the LEAK
relay energizes, and its
NO contact pair closes
X
if a cable fault is
detected, the FAULT
relay energizes, and its
NO contact pair closes
X
(no alarm condition)
FAULT
SUPERVISED
MODE
NC NCNONOCC
(recommended)
with no alarm condition,
both relays are
energized, and the NO
contact pairs are closed.
Leak Detection Kit quick setup guide (rev.131111B-GD) 3
LEAK
X X
leak detected
FAULT
LEAK
NC NCNONOCC
X
when water is detected
on the cable, the LEAK
relay de-energizes, and
its NC contact pair closes
X
cable fault
FAULT
LEAK
NC NCNONOCC
X X
if a cable fault is
detected, the FAULT
relay de-energizes, and
its NC contact pair closes