FMG FMT-L Installations- Und Bedienungsanleitung Seite 11
Turbinenradgaszähler
4000 HF Sensor Assy
Introduction to the 4000 HF Sensor Assy
The 4000 HF Sensor Assy can be (optionally) used with FMG gas
meters. The device provides a dual high frequency (HF) pulse output (Acc.
NAMUR, EN60947-5-6) suitable for gas volume measurement. The dual pulse output is fase-
shifted suitable for direction discrimination and/or use with auxiliary gas measurement
equipment.
Intended use in explosive atmospheres
The 4000 HF Sensor Assy fulfills the requirements of the ATEX directive 94/9/EC and the EMC
directive 2004/108/EC and can be used in explosive atmospheres according the European
normative documents EN60079-0, EN60079-11 and EN60079-26.
Electrical
equipment
for use in
explosive
atmospheres
CAUTION
II 1 G
or
II 2 G
4000 HF Sensor - Temperature Classes and Intrinsically Safe Circuit Parameters
Max.
Min. Amb.
Amb.
Temp.
Temp.
+100
°C
+80 °C
+85 °C
-40°C
+80 °C
+70 °C
+70 °C
+60 °C
Note 1
Parameter Pi is applicable for the combined sensor circuits (1A and 1B)
Note 2
Parameters Ui, Ii, Ci and Li apply per sensor circuit (1A or 1B)
Please observe the max. admissible electrical ratings for the applicable temperature classes.
An industrial IP67, M12 4-pin male socket (A-type coded
acc. EN 61076-2-101) is provided for external signal
connections. The M12 metal shell of the output socket
is electrically connected to the gas meter body which
should in gas installations be connected to (skid) earth
potential. The M12 connector nut should be tightened
with a preset torque of 0.4 Nm to guarantee IP67 ingress
protection.
FMT- QA Installation and Operation Instructions - Page 11 of 16
Electrical
EC Type Examination
protection
concept
embedded sensor:
Manufacturer: TURCK
Ex ia IIC
KEMA 04 ATEX 1152X
T4...T6 Ga
or
Ex ia IIC
T4...T6 Gb
Temp.
Category
Class
II 2 G
T4
II 1 G, II 2 G
T4
II 2 G
T5
II 1 G, II 2 G
T5
II 1 G, II 2 G
T5
II 1 G, II 2 G
T6
II 1 G, II 2 G
T6
Certificate(s) for
Type: BIM-EH6,5-
2AY1/S1236 0,5m
Pi *1
Ui *2
(mW)
(VDC)
200
200
80
20
80
200
80
150
Ingress
Ambient Temp.
Protection
Range
IP67
See table
Temp.
Classes &
Intrinsically
Safe Circuit
Parameters
Ii *2
Li *2
Ci *2
(mA)
(µH)
60
350
Model 4000 HF Sensor Assy
2(+)
1B
WH
BU
3(-)
1A
BN
BK
4(-)
(nF)
180
1(+)
PE
