User`s guide

- 10 -
I
I
I
I
.
.
C
C
O
O
M
M
M
M
I
I
S
S
S
S
I
I
O
O
N
N
I
I
N
N
G
G
I
I
N
N
T
T
O
O
S
S
E
E
R
R
V
V
I
I
C
C
E
E
1
1
.
.
P
P
O
O
W
W
E
E
R
R
S
S
U
U
P
P
P
P
L
L
Y
Y
Several types of power supply are available :
- pack of four AA type alkaline batteries (R6, 1.5 V) placed in a battery
holder of plastic material (fig.5)
- pack of four A type or 4/5A nickel metal hydrure rechargeable
batteries (1.2 V) placed in a heat-shrink sleeve (fig.4)
The power-supply pack is connected to the main board by a plug-in connector.
The power-supply pack cannot be changed in a hazardous area.
In normal conditions of use, battery life is as follows :
§ 12 hours with a rechargeable battery pack
§ 15 hours with a dry battery pack
Rechargeable-battery pack Dry-battery pack
Fig.4 Fig.5
Note: The instrument is certified for use in group I and IIc explosive atmospheres
only when it is fitted with dry or rechargeable batteries of a type recommended by the
manufacturer.