Dräger Polytron 3000, Инструкция по эксплуатации

Страница: 20 / 68

Technical Data
20
UL (Underwriters Laboratories Inc.) P3S
Only as to Intrinsic Safety for use in Hazardous Locations
Class I, Div. 1, Groups A, B, C, D
Class II, Div. 1, Groups E, F, G
Use in accordance with Dräger Control Drawing SE20105.
T4: –40 ≤ Ta ≤ +65
o
C, T6: –40 ≤ Ta ≤ +40
o
C.
Not tested in oxygen enriched atmospheres (>21 % O
2
).
Power Supply: V
max
= 30 V, I
max
= 0.3 A, P
i
= 700 mW,
C
i
= 0 nF, L
i
= 50 µH
Meter circuit: V
oc
= 7.6 V, I
sc
= 1 mA, V
max
= 10.4 V, C
a
= 2.5 µF, L
a
= 10 mH,
C
i
= 0, L
i
= 0
CSA (Canadian Standards Associa-
tion)
P3S
Intrinsic safe
Class I, Div. 1, Groups A, B, C, D
Class II, Div. 1, Groups E, F, G
Use in accordance with Dräger Control Drawing SE20106.
Power supply: V
max
= 30 V, I
max
= 0.3 A, P
max
= 700 mW,
C
i
= 5 nF, L
i
= 50 µH
Signal transmission to central unit
Analogue
— Measured-value signal 4 mA to 20 mA
— Drift below zero point 3.8 mA to 4 mA
— Full-scale value exceeded 20 mA to 20.5 mA
— Unit fault <3.2 mA
— Maintenance signal 3.4 mA ±0.2 mA constant
Power supply
Power supply 12 V DC to 30 V DC
Protection against polarity reversal.
Terminals for 0.5 to 2.5 mm
2
(20 to 14 AWG).
Physical specifications
Cable inlet M20x1.5, for cable diameter 6 to 12 mm (0.24" to 0.47")
Dimensions (H x W x D) 166 mm x 135 mm x 129 mm (6.54" x 5.31" x 5.08)
Weight approx. 0.9 kg / 2.0 lbs.
Ambient conditions Specifications for the sensor: see sensor data sheet
for operation –40 to 65
o
C (–40 to 160
o
F)
1)
700 to 1300 hPa (20.7 to 38.4 inch Hg)
0 to 100 % relative humidity, non condensing
1)
The legibility of the display is restricted at temperatures below –20
o
C (–5
o
F).
during storage –40 to 70
o
C (–40 to 150
o
F)
700 to 1300 hPa (20.7 to 38.4 inch Hg)
0 to 100 % relative humidity, non condensing
NRTL/C
® LR97594