Datasheet

Application
The square moving–coil instruments PQ 48 /2 (M series) having two
meter movements are used for process control measurement of DC cur-
rents and/or DC voltages. They are scaled to determine control devi-
ations and regulating link positions in control systems.
The instruments are suitable to be mounted in switchboards, control pan-
els, machine tool consoles or mosaic grid panels.
Movements
Self–shielding moving–coil movements with core–type magnetic sys-
tems, pivot suspended. Twin spring loaded jewel bearings for vibration
and shock resistance.
Mechanical Data
case details square case suitable to be mounted
in control / switchgear panels or
mosaic grid panels, stackable
material of case thermoplastics, flame retardant
material of window glass '
colour of bezel black (similar to RAL 9005) '
position of use any position permissible
panel fixing screw clamps '
panel thickness 1 ... 40 mm
mounting stackable next to each other
terminals connector blades 6.3 x 0.8
dimensions
bezel V 48 mm
case V 41 mm
depth 72 mm
panel cutout V 45.0
+0.6
mm
weight approx. 0.09 kg
Electrical Data
measuring unit DC voltages or DC currents
overload capacity (acc. to DIN EN 60 051 - 1)
continuously 1.2 times rated voltage / current
5 s max.
voltmeters 2 times rated voltage
ammeters 10 times rated current
measurement category O
pollution level 2
enclosure code IP 52 case front side '
IP 00 for terminals without protection against
accidental contact
IP 20 for terminals protected against
accidental contact
' also refer to ”Options”
Measuring Ranges
For mains use
Movement I (outer)
control deviation internal resistance
1
) pointer deflection scale '
–20 ... 0 ... +20 mA6 kW ±22.5° –10...0...+10
–20 ... 0 ... +20 mA6 kW ±22.5° –20...0...+20
–20 ... 0 ... +20 mA 13 kW ±22.5° –10...0...+10
–20 ... 0 ... +20 mA 13 kW ±22.5° –20...0...+20
–20 ... 0 ... +20 mA 50 kW ±22.5° –10...0...+10
–20 ... 0 ... +20 mA 50 kW ±22.5° –20...0...+20
–50 ... 0 ... +50 mA2 kW ±22.5° –10...0...+10
–50 ... 0 ... +50 mA2 kW ±22.5° –20...0...+20
–300...0...+300 mA 325 W ±22.5° –10...0...+10
–300... 0 ... +300 mA 325 W ±22.5° –20 ... 0 ... +20
regulating link internal resistance
1
) pointer deflection scale '
position
0 ... 600 mA 325 W 90° 0 ... 100%
0 ... 20 mA ' 3 W 90° 0 ... 100%
0 ... 10 V 100 kW 90° 0 ... 100%
Movement II (inner)
regulating link internal resistance
1
) pointer deflection scale '
position
0 ... 600 mA 325 W 90° 0 ... 100%
0 ... 20 mA ' 3 W 90° 0 ... 100%
0 ... 10 V 100 kW 90° 0 ... 100%
for use on transducer (”live zero”) Movement I, II
4 ... 20 mA mechanically suppressed zero, without zero
adjustment, voltage drop approx. 60 mV
Not for mains use
regulating link internal resistance
1
) pointer deflection scale '
position
Movement I and II
0 ... 3 V 30 kW 90° 0 ... 100%
1
) the resistance values are limited to a tolerance of ±20%
Scaling
pointers bar / knife–edge pointers
pointer deflection control deviation regulating link position
±22.5° 0 ... 90°
scale characteristics linear
scale division coarse–fine
scale length control deviation regulating link position
movement I movement I movement II
15.5 mm 31 mm 28 mm
Accuracy at Reference Conditions
accuracy class 1.5 according to DIN EN 60 051 - 1
reference conditions
ambient temperature 23°C
input rated measuring value
others DIN EN 60 051 - 1
influences
ambient temperature 23°C±2K