Flomec G Series Руководство пользователя - Страница 13
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SPECIFICATIONS
Accuracy*: ±0.5% of the true flow at
any point within the linear range of
the turbine flowmeter.
Linearity*: ±0.5% of the mean K-
factor throughout the linear range.
Repeatability*: ±0.1% of the indi-
cated flow throughout the linear
range.
Response Time:
½ to 2 in: 2-5 milliseconds for
step change in flowrate
3 in:
10-25 milliseconds for
step change in flowrate.
Frequency Output:
(over the linear range)
½ in. (051): 125 - 1000 Hz
½ in. to 2 in: 100 - 1000 Hz
3 in:
Voltage Output:
½ to 2 in: Approx. 100 mV @
100 Hz to 1.0 Volt
(r.m.s.) @ 1000 Hz
3 in:
Approx. 80 mV @ 50 Hz to
800 mV (r.m.s.) @ 500 Hz
Maximum Overange: to 125% of
maximum flowrate for intermittent
periods.
* Data based on water calibration @ 77°F (25°C).
GPM =
Hz x 60
K-factor
Hz = GPM x K-factor
60
K-factor = Hz x 60
GPM
921977-01C
50 - 500 Hz
FLOW RELATED FORMULAS
Pulses Per Litre = K-factor
Pulses Per Barrel = K-factor x 42
Pulses Per Cubic Meter = K-factor
Pulses Per Pound =
GPM = Pounds Per Hour
500 x S.G.
BPH = Barrels Per Hour
BPD = Barrels Per Day
BPM = Barrels Per Minute
CFM = Cubic Feet Per Minute
Standard Materials of
Construction
Housing: 316 Stainless Steel
Rotor: CD4MCu Stainless Steel
Shaft: Tungsten Carbide (standard),
316 Stainless Steel (optional)
Rotor Supports: 316 Stainless Steel
Sleeve Bearings: Tungsten Carbide
(standard), PTFE, PEEK (optional)
Thrust Bearings: Tungsten Carbide
(standard), Acetal (optional)
Retaining Rings:
302 / 316 Stainless Steel
Materials of Construction
Industrial turbine flowmeter shown here.
Pounds Per Hour = 500 x S.G. x GPM
3.785
Pounds Per Gallon = S.G. x 8.33 (Water)
BPH = GPM x 1.42857
BPD = GPM x 34.286
.003785
BPM = GPM x 0.238
GPS = GPM x .01666
K-factor
Pounds Per Gallon
GPD = GPM x 1440.0
GPM = BPD x .029167
GPM = BPH x 0.7
CFM = GPM x .13368
GPS = Gallons Per Second
GPD = Gallons Per Day
GPM = Gallons Per Minute
Figure 10
13