22 
Specifications 
 
 
 
 
 
 
Model    B 120S  B 310P  B 310S 
Capacity/weighing range  g  121  60/120/310  310 
Readability g 0.0001 0.001/0.002/0.005 0.001 
Tare range (by subtraction)  g  -121  -310  -310 
Standard deviation  g 
≤
±0.0001
 ≤
±0.001/0.001/0.0025
 ≤
±0.001 
Max. linearity  g 
≤
±0.0002
 ≤
±0.0015/0.002/0.005
 ≤
±0.002 
Stabilization time (typical)  s  3  2  2 
Display update  s  0.1 – 0.8 (selectable) 
Adaption to ambient conditions 
and application requirements 
 
by selection of one of 4 optimized filter levels 
 
Stability range  d  0.25 ... 64 (selectable) 
Ambient temperature range  K 
283 – 303  
(+10
o
C ... +30
o
C) 
273 – 313  
(0
o
C ... +40
o
C) 
Allowable relative humidity    25 ... 85  15 … 85 
 
(moisture-proof rating) 
Sensitivity drift within  
+10 … +30
o
C 
/
o
C 
 
≤
±2∙10
-6 
 
≤
±5∙10
-6
 
 
≤
±2∙10
-6 
 
Pan size  mm/in.  Ø 90/3.5  Ø 130/5.1  Ø 130/5.1 
Balance housing (W x D x H) 
 
 
 
mm 
in. 
 
 
230 x 291 x 287 
9.1 x 7.2 x 8.2 
 
 
220 x 235 x 60 
8.7 x 9.3 x 2.4 
(with draft shield: 
height: 127 mm or 5”) 
Balance chamber (W x D x H) 
 
mm 
in. 
200 x 184 x 209 
7.9 x 7.2 x 8.2 
 
 
 
Net weight  kg/lbs.  7/15.4  4.5/9.9  4.5/9.9 
Power requirements 
(voltage + frequency) 
 
115 or 230 V depending on the AC adapter used 
50 – 60 Hz 
Allowable voltage fluctuation    -20% … +15% 
Power consumption(typical)  VA  max. 13  7  7 
Interface (optional) 
 
RS 232 C/V24 – 28, RS 423/V10; 7-bit; 
parity: even, mark, odd, space; 
transmissions rate: 150 ... 9,600 Baud