— PRELIMINARY —
Gilian
®
GILAIR-3 & GILAIR-5 AIR SAMPLING SYSTEMS
10
Sensidyne Document No. 800880M (Rev E)
•
Flow Fault Indicator
The GilAir-3 and GilAir-5 Flow Fault Indicator lights
up if the pump is unable to maintain the flow rate
within
±
5% of the set point. This can occur if the
pump is operated outside its specified performance
ranges, or when the battery pack has insufficient
charge. After 27–39 seconds of continuous operation
under fault conditions, the pump will stop. This delay
is provided so that a momentary obstruction of flow
will not result in an unnecessary shutdown of the sys-
tem. For units equipped with the optional timer
board, shutdown under fault conditions will preserve
the run time in the display. This allows the user to sal-
vage the sample data.
•
Battery Charge Indicator
The battery charge indicator will illuminate when the
sampler is turned on and the battery pack is fully
charged. Since the circuit is activated by the slight over-
voltage condition common in a fully-charged battery,
the indicator will normally turn off after the sampler
runs for a short period of time.
1.2.2
Internal/External Vent Control
The internal/external vent control is located on the
top of the sampling pump. You may select the venting
control as desired, using a screwdriver, provided with
the pump. Selecting the open circle position will bent
the pump’s discharge external to the sampler’s case
(recommended for moist or corrosive sampling envi-
ronments). Selecting the closed circle will vent the
pump’s discharge internally (recommended for dust
laden environments).
Table 1.2
Pneumatic System
n
o
i
t
p
i
r
c
s
e
D
3
-
r
i
A
l
i
G
5
-
r
i
A
l
i
G
p
m
u
p
n
o
t
s
i
p
e
l
g
n
i
s
,
n
e
v
i
r
d
r
o
t
o
m
C
D
X
p
m
u
p
n
o
t
s
i
p
l
a
u
d
,
n
e
v
i
r
d
r
o
t
o
m
C
D
X
m
e
t
s
y
s
g
n
i
v
l
a
v
d
e
d
a
o
l
-
e
r
p
d
e
t
n
e
t
a
P
X
X
y
l
b
m
e
s
s
a
r
e
p
m
a
d
l
a
r
g
e
t
n
I
X
X
y
l
b
m
e
s
s
a
g
n
i
s
u
o
h
r
e
t
l
i
f
h
g
u
o
r
h
t
-
e
e
S
X
X
)
%
0
2
±
:
y
c
a
r
u
c
c
A
(
r
o
t
a
c
i
d
n
i
w
o
l
F
/
r
e
t
e
m
a
t
o
R
X
X
w
o
l
F
t
n
a
t
s
n
o
C
:
y
t
i
l
i
b
a
p
a
C
w
o
l
F
w
o
L
l
a
n
o
i
t
p
O
X
X
w
o
l
F
-
i
t
l
u
M
:
y
t
i
l
i
b
a
p
a
C
w
o
l
F
w
o
L
l
a
n
o
i
t
p
O
X
X
Summary of Contents for GILAIR-3
Page 29: ......
