Baseline-systems BHM Series Hydrometer Uživatelský manuál stáhnout pdf (Strana 8)

8 • Hydrometers Operation and Maintenance Manual

Specications, 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

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

Pulse per

1 USG

Pulse per

10 USG

Pulse per

100 USG

EXAMPLE for sizes 1½”, 2”, 3”, 4”

(standard pulse = 1 g/p)

U.S. GALLONS

0 0 0 0 0 0

Pulse per

10 USG

Pulse per

100 USG

Pulse per

1000 USG

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.

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