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Control systems Self-acting controls
Table 7 Control system selection The control systems are available in four configurations as shown below. Each type is available with either a dial or knob type temperature adjustment. Dimensions are approximate in mm
Actuator
Actuator
SA121, SA128
SA122
25
310 (SA121) 178 (SA128)
271
185
415
Setting knob
17
Sensor
240
Capillary
Sensor
Capillary
Setting knob
Specifications
4.5 12
Standard capillary tube (m)
Weight kg
Type Range Temperature
Maximum sensor temperature
Material
1 2 3 1 2 1 2
- 15 to 50 °C
SA121
40 to 105 °C
55 °C over set value to max. 190 °C
Brass
2.0
2, 4, 8 and 20
95 to 160 °C
- 20 to 120 °C
SA122
55 °C over set value
Brass
1.8
2, 4, 8 and 20
40 to 170 °C
- 20 to 120 °C
SA128
55 °C over set value to max. 190 °C
Brass
1.8
2, 4, 8 and 20
40 to 170 °C
* Longer lengths up to 9.6 m are available to special order
TI-S21-07 CTLS Issue 6
Page 12 of 13
2-Port Self-acting Temperature Control Valve Selection for Heating and Cooling Applications
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