8
Overall dimensions
РМ
1703
М
-
О
РМ
1703
МА
РМ
1703GN
О
РМ
1703GN
А
РМ
1703
М
-
О
1
РМ
1703
М
-
О
1
А
РМ
1703
МВ
РМ
1703GN
В
72
х
32
х
87 mm (2
13/16
"
х
1 ¼"
х
3
7/16
")
75
х
35
х
89 mm (2
15/16
"
х
1
3/8
"
х
3
7/8
")
Mass (without a housing), not exceeding
РМ
1703
М
-
О
РМ
1703
МА
РМ
1703GN
О
РМ
1703GN
А
РМ
1703
М
-
О
1
РМ
1703
М
-
О
1
А
РМ
1703
МВ
РМ
1703GN
В
180 g (6.35 oz)
200 g (7.05 oz)
230 g (8.1 oz)
* For power supply of the indicator a rechargeable storage battery may be used (or a supply cell differing from the
shown one in specifications). It is important that the typical size should correspond to
АА
(LR6)
and rated voltage should be
within
1,1 - 1,6 V. However, in this case duration of the continuous work and the range of working temperatures may differ
from the above shown.
ATTENTION! The manufacturer guarantees the technical parameters of the indicator as far as detection of sources
and false operations are concerned at n factors set up at the manufacturer’s. :
- for gamma radiation n=5,3;
- for neutron radiation n=5
2
1
PROVISION OF EXPLOSION PROTECTION
The explosion proof model of the indicators is provided by the type of explosion protection “sparkle-
free electric circuit ia” as per IEC 60079-11 and execution of the indicator construction in accordance with
the requirements of IEC 60079-0 owing to the following designing and circuit technical solutions:
- provision of the normal degree of mechanical strength of the indicator casing in accordance with
the requirements of IEC 60079-0;
- the use of materials in the casing of the indicator excluding inflammability from electrostatic
discharges;
- limitation of the short circuit current down to 1,0
А
from a galvanic supply cell having voltage 1, 5
V with the aid of a current limiting resistor and a fuse;
- the use of a special key for unscrewing the cover of the supply cell and a warning note in the
explosion hazard area “Do not open!”;
- limitation of internal capacity of alarm to values not exceeding the intrinsic safety level;
- introduction of limiting stabilitrons, shunting the piezoceramic cell 20 mm
х
0,38 mm 4 kHz;
- use of sealing by means of the voltage converter compound 1,5 V – 20 V;
- provision of the protection degree for the indicator casing IP65 as per IEC 529.
Marking of the explosion protection at the indicator casing EEx ia IIC T4.
FCC STATEMENT
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation
2
РМ
1703GNO,
РМ
1703GNA,
РМ
1703GNB