Catalog Downloads
Brochure Downloads
- Variable Area Flow Meters
- Model A, C, D
- Model BA
- Model E
- Model EA
- Model HV, HK, HT
- Model KL, K, KD
- Model KLFH
- Model KPM
- Model L
- Model TL
- Model TLFH
- Model VL, VD, VE
- Model VLFH
- Seal Water Flow Meters
- Model SLM
- Model SLMx2
- Model SLM with local alarm light
- Constant Flow Regulators
- Model 2851
- Model 2914
- Model 3630
- Model 3631
- Oval Gear Flow Meters
- Model SR1
- Model SRx
- Model SRO
- Model 6210P
- Model 2950
- Oil Lubrication Flow Meters
- Model KA
- Model TLA
- Model VExA
- Model SR1
- Model SRx
- Model SRO
- Model 2950
- Model SRV - Upgrade block
- Oil Lubrication Flow Monitoring Systems
- Model OVAL D2
- KLD Smart - Touchscreen display
- KVM Control
- Oil Analyzers
- Model Oilan A4
- Model OilCol
- Alarms for variable area flow meters
- Model NK
- Check Valves
- Model 2680
- Air sampling devices
- Air sampling device with six-stage cascade impactors
- Asbestos air sampling device
Software Downloads
Flow meter accuracy
Kytola flow meter accuracy is stated as % of F.S. (Full Scale) or % of RD (Reading).
% F.S. accuracy |
% of F.S. inaccuracy is calculated
Flow meter reading – Real flow *100 = F.S. inaccuracy
Flow meter full scale
% RD accuracy |
% of RD. inaccuracy is calculated
Flow meter reading – Real flow *100 = RD inaccuracy
Flow meter reading
Gas Flow Meter Calculation Formulas
Gas flow conversion formula![]() |
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Actual Flow Rate: Q0 = Actual flow rate ρ0 = Specific gravity of measured gas (Air = 1) p0 = Actual ABSOLUTE pressure in metering tube T0 = Actual ABSOLUTE temperature (Kelvin) in metering tube (0°C = 273,15°K) (20° C = 293,15°K) |
Flowmeter Design (Calibration) Conditions Q1 = Flow meter reading ρ1 = Specific gravity of design gas (Air = 1) p1 = ABSOLUTE design pressure (calibration pressure) T1 = ABSOLUTE design temperature (Calibration temperature) |
Example 1
What is the maximum flow if flow meter EK-3NR is used for Carbon dioxide at 3 bar(g) / 25°C.
Ex-3NR scale is
• 1 - 12 ln/min Air at 0 bar(g)/ 20°C
Q1 = 12 ln/min
ρ1 = 1
p1 = (0 + 1,013) bar = 1,013 bar
T1 = 293,15° K
Q0 = ?
ρ0 = 1,529
p0 = (3+ 1,013) bar = 4,013 bar
T0 = 298,15° K
Actual flow at 12 ln/min reading
Q0 = 19,15 ln/min CO2 at 3 bar(g)/ 25°C
Example 2
What is the actual flow if flow meter LH-JJ32 is used for Helium at 5 bar(g) / 10°C.
LH-JJ32 is calibrated for
• 30 ln/min Nitrogen at 3 bar(g)/ 20°C
Q1 = 30 ln/min
ρ1 = 0,9672
p1 = (3 + 1,013) bar = 4,013 bar
T1 = 293,15°K
Q0 = ?
ρ0 = 0,1380
p0 = (5+ 1,013) bar = 6,013 bar
T0= 283,15°K
Actual flow at 30 ln/min reading
Q0 = 98,9 ln/min He at 5 bar(g)/ 10°C