Rh eo n i k M esst ech n i k
RE V . L O ct o b er 2014
.
RHEONIK Coriolis Flowmeter
Operation Manual RHE 07, 08, 11
Appendix
Electrical characteristics:
Intrinsically safe sensor RHM circuits, when connected to RHE:
Circuit name
Terminals
Uo [V]
Io [mA]
Lo [mH]
Co [uF]
Po [mW]
Drive coil
1 - 2
8, 6
141
1,6
4,8
310
PT100 sense
3 - 4
7,4
29
35
10
54
PT100 current
3 - 5
7,4
29
35
10
54
Sense coil 1
6 - 7
7,4
29
35
10
54
Sense coil 2
8 - 9
7,4
29
35
10
54
Power supply circuit, remote unit RHE (galvanically isolated):
Remote unit type Rated voltage
Rated frequency
Maximum voltage (Um)
Rated
power
RHE 07, 08, 11
230 VAC
50/60 Hz
250 VAC
10 VA
RHE 07, 08, 11
115 VAC
50/60 Hz
125 VAC
10 VA
RHE 07, 08, 11
24 VAC
50/60 Hz
26 VAC
10 VA
RHE 07, 08, 11
24 VDC
DC
30 VDC
10 VA
Temperature tables:
Measurement fluid temperatures (at ambient temperature 60°C):
Max. fluid temperature [°C] in temperature class
at Ta = 60°C
T6
T5
T4
T3
T2
T1
Sensor RHM NT
50
65
100
120
-
-
Sensor RHM ET
-
-
-
165
210
-
Sensor RHM HT
-
-
-
165
260
350
Min. fluid temperature [°C] in temperature class
at Ta = 60°C
T6
T5
T4
T3
T2
T1
Sensor RHM NT
-20
-20
-20
-20
-20
-20
Sensor RHM ET
-45
-45
-45
-45
-45
-45
Sensor RHM HT
-20
-20
-20
-20
-20
-20
Note: With the temperatures given, and for a certain temperature class the sensor RHM com-
ponents must not be subjected to any non-permissible temperatures.
Remote unit RHE ambient temperatures Ta :
Remote unit type
Min. T
a
[°C]
Max. T
a
[°C]
Temperature class
RHE 07
-40
+60
-
RHE 07C
-40
+60
-
RHE 08
-40
+60
-
RHE 11
-40
+60
T5
Note: Remote units RHE 07 and 08 are for installation in safe area only.
