Heinrichs Messtechnik GmbH
OPERATING MANUAL TMU / UMC3
Page 13 of 122
Performance characteristics of the TMU sensor
Reference conditions
Established flow profile
Inlet section has to correspond to mounting length
Control valves always positioned downstream
Measurement is to be performed with a liquid containing no gas bubbles
Flow tubes are to be kept clean at all times
Process temperature is to be regulated as specified in Section 3.4.6, “Process conditions” on page 22
Process pressure is to be regulated as specified in Section 3.4.8, “Process pressure range” on page 23
Ambient temperature is to range from + 10 °C to + 30 °C (50 °F to 86 °F)
Warm-up period: 15 minutes
Standard calibration is to be performed at 20 %, 50 % and 100 % (two times each)
High-frequency interference is to be regulated according to the EMC standards stated in section 9,
“Declaration of Conformity” on page 119
TMU flow ranges
Model
kg/h [lbs/min]
kg/h [lbs/min]
kg/h [lbs/min]
kg/h [lbs/min]
TMU-x008
60 [2,2]
600 [22,0]
330 [12,1]
0,03 [0,001]
TMU-x010
250 [9,2]
2500 [91,9]
1150 [42,3]
0,125 [0,005]
TMU-x012
800 [29,4]
8.000 [293,9]
3.650 [134,1]
0,4 [0,015]
TMU-x015
1200 [44,1]
12000 [440,9]
5250 [192,9]
0,6 [0,022]
TMU-x020
2.500 [91,9]
25.000 [918,6]
14.250 [523,6]
1,25 [0,046]
TMU-x025
3000 [110,2]
30000 [1102,3]
20000 [734,9]
1,5 [0,055]
TMU-x040
6000 [220,5]
60000 [2204,6]
55000 [2.020,9]*
3 [0,110]
TMU-x050
20000 [734,9]
80000 [2939,4]
74000 [2.719,0]
4 [0,147]
TMU-x080
25000 [918,6]
120000 [4409,2]
118000 [4.335,7]**
12 [0,4]
TMU-x100
30000 [1102,3]
200000 [7348,6]
200000 [7.348,6]***
20 [0,7]
TMU-x150
60000 [2204,6]
460000 [16901,8]
460000 [16.901,8]***
46 [1,7]
TMU-x200
150000 [5511,5]
700000 [25720,2]
700000 [25.720,2]****
70 [2,6]
TMU-x250
300000 [11022,9]
1500000 [55114,6]
1350000 [49.603,2]
150 [5,5]
TMU-x300
400000 [14697,2]
2200000 [80834,8]
1900000 [69.811,9]
220 [8,1]
* (
D
p=0,87bar)
** (
D
p=0,95bar)
*** (
D
p=0,93bar)
**** (
D
p=0,66bar)
Zero point stability
(of range)
Max.
measuring range
Nominal
(
D
p=1bar)
Min.
measuring range
Table 1: Flow ranges
Reference conditions: in conformity with IEC 770:
Temperature:
20 °C, relative humidity: 65 %, air pressure: 101.3 kPa
Fluid: water
