Operating Instructions
Temperature measurement
CombiTemp™
TFRH/N
RTD temperature sensor
7.
Electrical connection in explosion hazardous areas
DANGER
Risk of fatal accident due to a wrongly connected sensor
Correct gas and dust protection can only be achieved by meeting their installation requirements.
f
Make sure that all requirements are met and that sensor and installation have a valid approval
for their speci
fi
c explosive atmosphere.
f
Allow only persons trained in explosion protection to perform the installation.
f
Never use FlexProgrammer in explosion hazardous areas.
7.1
Explosive gas atmospheres zone 0, 1 and 2
The TFRH/N can be used with built in FlexTop™ 22xx transmitter in explosion hazardous areas of
zone 0, 1 or 2. Sensors must be installed with Zener barriers.
If electrostatic dissipative film on display
cover becomes damaged, discontinue use in zone 0.
Approval for TFRH/N-xxxx.x1xx.xxxx.xxxx.xxxx:
ATEX II 1G/IECEx Ex ia IIC T6...T4
All TFRH/N with intrinsic safety protection ia
f
Use Zener barriers.
f
If enabled, protect each relay by a separate Zener barrier or use a barrier with multiple channels.
f
Depending on the transmitter type, comply with the following temperatures and connection values.
Ex ia IIC T5 Ga
With DFON display
Without display
FlexTop™
2202
Ui:
30
V
Ii:
75
mA
Pi:
750
m
W
Li:
20
μH
Ci:
25
nF
Ui:
28
V
Ii:
100
mA
Pi: 7
00
m
W
1
2
3
4
5
6
–
+
Relay 2
Relay 1
Function
Pin
+Vs
1
Iout
2
Relay 21
3
Relay 22
4
Relay 11
5
Relay 12
6
www.baumer.com
11 /
54
FlexTop™
2212, 2222
Relay outputs
T5: –20
≤
Tamb
≤ +
60 °C
Li:
34
μH
Ci:
26
nF
Li:
10
μH
Ci:
10
nF
T6: –40 ≤ Tamb ≤ +50 °C
T4: –20 ≤ Tamb ≤ +65 °C
T5: –40 ≤ Tamb ≤ +85 °C
Ci:
1
1
nF
Li:
24
μH
T6: –40 ≤ Tamb ≤ +56 °C
T5: –40 ≤ Tamb ≤ +71 °C
T4: –40 ≤ Tamb ≤ +80 °C
T5: –20
≤
Tamb
≤ +
60 °C
T4: –20 ≤ Tamb ≤ +65 °C
Ui:
30
V
Ii:
95
mA
Pi: 7
50
m
W
Li:
10
μH
Ci:
10
nF
T5: –20
≤
Tamb
≤ +
60 °C
T4: –20 ≤ Tamb ≤ +65 °C
N/A
