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Each output circuit 1&4, 2&5, 3&6 may be connected to linked (multi-channel single IS
source) or separate intrinsically safe sources which are certified [Ex ia IIC] such that the
series or parallel combinations of all 3 channels do not exceed 51V, 35mA and 700mW(T4),
300mW(T5) and 80mW(T6). Be aware that the two Wiegand Sensor outputs share a
common ground!
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.
FMR 171/241/260 QA Installation and Operation Instructions – Page 13 of 20
Sensor: 4000 HF Sensor Assy
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)
(nF)
60
350
180
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