Data Sheet for Product

2/4
Siemens Setpoint Adjusters, passive BSG21… CE1N1991en
Building Technologies 2016-04-08
Ordering
When ordering, please give quantity, name and type reference.
Example: 3 setpoints adjusters BSG21.1
Mechanical design
Multisectional plastic housing with:
- Printed circuit board carrying the potentiometer and the 4 connection terminals
- Mounting plate with 3 adjustable end-stop pins for mechanical limitation of the set-
ting range
- Setting knob
- Scale (exchangeable)
- Transparent cover plate
Accessories
Type BSG21.1 can be used with a number of different printed scales. An additional set
of printed scales can be ordered using type reference BSG-Z. Each of the printed
scales listed below is contained in this set twice. This means that the BSG21.1 can be
used with the following types of printed scales:
Setting range Measured value
0…50 °C Temperature
0…100 °C Temperature
-10…+130 °C Temperature
0…130 °C Temperature
0…250 °C Temperature
100…200 °C Temperature
150…450 °C Temperature
0…30 K Temperature difference
-5…+5 K Temperature shift
-25…+25 K Temperature shift
-35…+35 K Temperature shift
-65…+65 K Temperature shift
0…20 g/kg Air humidity
0…0.5 bar Differential pressure, liquids
0…2 bar Differential pressure, liquids
0…10 bar Differential pressure, liquids
0…20 bar Differential pressure, liquids
0…40 bar Differential pressure, liquids
0…20 Pa Differential pressure, gases
0…100 Pa Differential pressure, gases
0…500 Pa Differential pressure, gases
0…3000 Pa Differential pressure, gases
0…100 % Position
Blank scale
Installation notes
The BSG21… setpoint adjusters are suited for mounting in a control panel front, control
desk or on a concealed conduit box (on the cover plate).
Mounting