Crouzet CT48A Data Sheet
Analogue temperature controllers
➜ CT48A
■ Input by J-K thermo-couple or by thermo-resistance Pt
100 (2-wire)
■ 2 regulation modes : ON/OFF or proportional
derivative selected by wiring
■ Relay output
Specifications
Type Designation Temperatures Scale divisions Code
CT48A Resistance temperature detector PT 100 - 50 + 30 2°C 89 420 207
Thermocouple J 0 + 250 10°C 89 420 047
Thermocouple K 0 + 800 20°C 89 420 077
Accessories
Solder tag connector 8-pin 25 622 301
Screw terminal or connector socket - 8-pin 25 622 303
Protective cover IP 54 79 237 709
0 + 40 1°C 89 420 217
0 + 120 2°C
0 + 200 5°C 89 420 237
0 + 400 10°C 89 420 257
0 + 450 10°C 89 420 067
0 + 600 10°C
0 + 1200 20°C 89 420 087
89 420 227
89 420 097
Code
7
General characteristics
Supply voltage Un 230 to 240 VAC
Operating range 0.85 to 1.15 x Un
Maximum power consumption 2 VA
Inputs
Thermocouple according to IEC 584 J - K
Automatic cold-junction compensation For J - K : semi-conductor
Max. line resistance 150 Ω
Resist. temp. detector Pt 100 according to IEC 751 2-wire
Derating following line resistance 1 °C / 0.4 Ω
Derating with regard to the setpoint
o
Per 10
C variation in ambient temperature
Derating with regard to the setpoint
Per 10 Ω of line resistance variation
Derating with regard to the setpoint
Per°10°% variation in supply voltage
Operation
ON/OFF output action
Fixed hysteresis
Derived proportional output action
Fixed proportional band (% of full scale)
Derived proportiona output action
Period proportional band
Output
Changeover relay 5 A / 250 V AC max.
Mechanical life (operations)
Behaviour in the event of sensor failure Relay in rest position
Scale evolution 80 mm
Display accuracy J-K (full scale) ± 2 %
Display accuracy Pt 100 (of the full scale) ± 1.5 %
Temperature limit operation (°C) 0°➞ +55
Temperature limits stored (°C) -20 ➞ +70
Insulation according to standard VDE 0110 Group C for 250
Protection class according to DIN 40050 Casing IP20
Protection class according to DIN 40050 Front panel IP41
Mounting Clip
Connection Solder terminals socket, 8 poles
Weight (g) 350
50/60 Hz
J - K : ≤ 1 °C
Pt 100 : ≤ 0.1 °C
J - K : ≤ 1 °C
≤ 0.1 %
0.4 %
3 %
22 s
5
3x10
To order, see page 6
210
For more information www.crouzet.com
Dimensions
Panel cut-out Screw terminal or connector socket - 8-pin
base : ref. 25 622 303
for panel mounting
Connector socket Solder tag connector, 8-pin : ref. 25 622 301
Protective cover - IP 54 : 79 237 709 Dimensions - mounting
Screw terminal or connector socket - 8-pin
base : ref. 25 622 303
for mounting on DIN rail 35 mm EN 50022
Connections
Curves
ON/OFF output action - CT48A Proportional derivative (PD) action - CT48A
1
2
3
4
Temperature
B
Setpoint
C
Output ON
D
Output OFF
E
Time
F
Hysteresis (0.4 %)
G
6
5
1
2
3
4
Temperature
B
Setpoint
C
Output ON
D
Output OFF
E
Time
F
Proportional band (PB)
H
7
7
5
Other information
Other possible output type : solid state 0 Other possible supply voltages : 24 V AC and 110 V AC. Please consult us.
For more information www.crouzet.com
211
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