Transducer type – Baseline Systems BHM Series Hydrometer User Manual
Page 10
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• Hydrometers Operation and Maintenance Manual
Transducer Type
Transducer Type: Reed Switch and Photo Diode K Factors
Gallons per pulse
1
10
100
0.1
0.0053
Pulse per gallon
1
0.1
0.01
10
187.900
K factor 10.00
60.00
600.00
6000.00
6.00
0.319
Gallons per pulse
1
10
100
0.1
0.0085
Pulse per gallon
1
0.1
0.01
10
117.000
K factor 10.00
60.00
600.00
6000.00
6.00
0.5100
Gallons per pulse
1
10
100
0.1
0.0205
Pulse per gallon
1
0.1
0.01
10
48.710
K factor 10.00
60.00
600.00
6000.00
6.00
1.232
Gallons per pulse
1
10
100
1
0.0556
Pulse per gallon
1
0.1
0.01
10
17.993
K factor 10.00
60.00
600.00
6000.00
6.00
3.335
Gallons per pulse
10
100
1000
1
0.1741
Pulse per gallon
0.1
0.01
0.001
1
5.747
K factor 10.00
600.00
6000.00
60000.00
60.00
10.437
Gallons per pulse
10
100
1000
1
0.317
Pulse per gallon
0.1
0.01
0.001
1
3.152
K factor 10.00
600.00
6000.00
60000.00
60.00
19.036
Standard
Output
Optional Output
PD
PDH
Meter
Size
1½”
2”
3”
4”
6”
8”
Photo Diode (PD) and
Photo Diode High Frequency
Pulse (PDH)
Reed Switch (RS)
Note: Offset = 0 in all Netafim USA Water Meters
When entering K factors in controllers and/or data recorders please refer to the manufacturer’s
recommendations—some will require the number of gallons per pulse and others will require
the number of pulses per gallon. Some manufacturers will require a “K” and “offset” (for all
Netafim USA Water Meters the offset = 0) where the K and offset are calculated using he fol-
lowing equation:
Freq = (GPM/K) – offset
Where:
Freq = pulse/second
GPM = gallons per minute
K
= unit less constant specific to each hydrometer pulse output
Offset = correction factor (All Netafim USA water meters have an offset = 0)
or:
K
= 60/(pulse/gallon)