Kobold KMT-1, Руководство пользователя, Страница: 22 / 36

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9. TECHNICAL DATA KMT-1, KMT-2 and KMT-3
Measuring value
Flow
Measurand Volumetric flow at standard conditions acc. DIN 1343
P
0
= 1013.25 mbar; t
0
= 0 °C (273.15 K)
Measuring range KMT-x1xx KMT-x2xx
standardized volumetric flow in air DN15: 0.32...63 Nm
3
/h
0.19...37.1 SCFM
0.32...126 Nm
3
/h
0.19...74.1 SCFM
DN20: 0.57...113 Nm
3
/h
0.34...66.5 SCFM
0.57...226 Nm
3
/h
0.34...133 SCFM
DN25: 0.90...176 Nm
3
/h
0.53...103.5 SCFM
0.90...352 Nm
3
/h
0.53...207.1 SCFM
DN32: 1.45...289 Nm
3
/h
0.85...170.0 SCFM
1.45...578 Nm
3
/h
0.85...340 SCFM
DN40 2.26...452 Nm
3
/h
1.33...265.9 SCFM
2.26...904 Nm
3
/h
1.33...531.8 SCFM
DN50: 3.50...700 Nm
3
/h
2.06...411.8 SCFM
3.50...1400 Nm
3
/h
2.06...823.6 SCFM
standardized flow in air, nitrogen,
argon, CO
2
≤DN50: 0.5...100 Nm/s
100...19685 SFPM
0.5...200 Nm/s
100...39370 SFPM
oxygen ≤DN25: 0.5...100 Nm/s
100...19685 SFPM
0.5...200 Nm/s
100...39370 SFPM
Accuracy
in air at 7 bar (abs) and 23 °C (73 °F)
1)
± (1.5% of measuring value + 0.5% of full scale)
Accuracy of temperature compensation ± (0.1% of measuring value/°C)
Response time t
90
typ. 1 sec.
Sample rate 0.5 sec.
Temperature
Measuring range -20...80 °C
(-4...176 °F)
Accuracy
at 20 °C (68 °F)
± 0.7 °C
(1.26 °F)
Outputs
Output signal and display ranges are freely scalable
Analogue output voltage 0 - 10 V max. 1 mA
current (3-wire) 0 - 20 mA and 4 - 20 mA R
L
<500 Ohm
Switching output potential-free max. 44 VDC, 500 mA switching capacity
Pulse output Totalizator, pulse length: 0.02...2 sec.
Digital interface USB (for configuration)
Input
Optional pressure compensation 4 - 20 mA (2-wire; 15 V) for pressure sensor
General
Supply voltage 18 - 30 V AC/DC
Current consumption max. 200 mA (with display)
Temperature range ambient temperature: -20...60 °C
(-4...140 °F)
medium temperature: -20...80 °C
(-4...176 °F)
storage temperature: -20...60 °C
(-4...140 °F)
Nominal pressure up to 16 bar
(232 Psi)
Humidity no condensation
Medium compressed air or none corrosive gases
Connection cable gland M16x1.5 (optional connector M12x1 8pol.)
Electromagnetic compatibility EN61326-1 EN61326-2-3
Industrial Environment
Material housing metal (AlSi3Cu)
probe stainless steel
sensor head stainless steel / glass
measurement ball valve brass
Housing protection class IP65 / Nema 4
1) The accuracy statement includes the uncertainty of the factory calibration with an enhancement factor k=2 (2-times standard deviation). The accuracy was
culated in accordance with EA-4/02 and with regard to GUM (Guide to the Expression of Uncertainty in Measurement).
Flow measuring range in dependence on operating pressure
air, nitrogen, oxygen, argon
CO
2
Formula for calculating the standardized
volumetric flow:
Q
N
= V
N
* id
2
* π/4 * 3600
Q
N
... standardized volumetric flow [m
3
/h]
V
N
... standardized flow [m/s]
id ... inner pipe diameter [m]
π ... 3.1415
Nm/s
operating pressure [bar]