Baseline Systems BHM Series Hydrometer - Manual (Page 8)

8
• Hydrometers Operation and Maintenance Manual
Specifications, Cont.
Available Outputs
(U.S. gallons/pulse) 1 ½” 2”
Available Impulse Sequences
3” 4” 6” 8”
1    
10      
100      
1000   
Reed Switch (RS) Register
Specifications
• Magnet activated.
• Acts as a “dry contact”, uses very little
electric power.
• For “Volume” related functions such as
data recorders or simple counters.
Electrical Specifications
Maximum Contact Current: 50 mA
Maximum Contact Voltage: 28 VDC
Circuit Diagram
Register with Reed Switch
Output, Two Wires
Hydrometer
Size
Gallons/
Pulse
Reed Switch (RS)
Low Frequency Pulse Outputs
Pulse/
Gallon K Factor Offset
1½”, 2”, 3”, 4” 1 1 60.00 0
6”, 8” 10 0.1 600.00 0
Reed Switch (RS)
U.S. GALLONS
0 0 0 0 0 0
0
1
2
3
4
9
8
7
6
5
0
1
2
3
4
9
8
7
6
5
0
1
2
3
4
9
8
7
6
5
Pulse per
1 USG
Pulse per
10 USG
Pulse per
100 USG
BM
EXAMPLE for sizes 1½”, 2”, 3”, 4”
(standard pulse = 1 g/p)
U.S. GALLONS
0 0 0 0 0 0
0
1
2
3
4
9
8
7
6
5
0 1
2
3
4
9
8
7
6
5
0
1
2
3
4
9
8
7
6
5 Pulse per
10 USG
Pulse per
100 USG
Pulse per
1000 USG
BM
x 1000
EXAMPLE for sizes 6”, 8”
(standard pulse = 10 g/p)
For sizes 1½”, 2”, 3”, 4”: If the pointer with the magnet is set in the middle position as shown
in the drawing the magnet will make one contact of the reed switch for every 360° rotation - the
result is an output of 1 pulse per 10 USG.
For sizes 6”, 8”: If the pointer with the magnet is set in the right position as shown in the drawing
the magnet will make one contact of the reed switch for every 360° rotation - the result is an
output of 1 pulse per 1000 USG.