6
2551 Magmeter
8.1 Wiring: Frequency output (Compatible with all
POWERED Signet Flow instruments.)
•
When the blue jumper illustrated here is placed over both
pins, the 2551-XX-11 outputs an open collector frequency
signal that can be connected to any powered Signet
fl
ow
meter. (Models 5075, 5500, 5600, 8550, 8900.)
•
5 VDC power is provided to the 2551 Magmeter by all
Signet
fl
ow instruments. No additional power is required.
•
If connecting the 2551 Magmeter to a
fl
ow instrument
from another manufacturer, 5 to 24 VDC power must be
provided to the 2551. A 10 K
Ω
pull up resistor must also
be connected between terminals 1 and 2.
•
The frequency output will be displayed as positive
fl
ow regardless of the
fl
ow direction.
8.2 Wiring: S
3
L output (Compatible with 8900 Multi-
Parameter Controller only)
•
When the blue jumper illustrated here is removed (or
placed over one pin for storage) the 2551-XX-11 outputs a
digital (S
3
L) signal compatible with the Signet 8900.
•
The 2551 receives 5 VDC power from the 8900. No
additional power is required.
•
The 8900 will display 0 (Zero)
fl
ow rate during periods
of reverse
fl
ow.
•
The maximum cable length from the 2551 to the 8900
depends on the 8900 con
fi
guration. Refer to the 8900
manual for complete information.
+5 VDC
S L Data
3
Ground
Not used
1
2
3
4
3-8900.621C
I/O Module 3-8900.401-X
1
2
3
4
5
6
7
8
9
10
11
12
13
14
+5VDC (Black)
Freq. Input (Red)
GND (Shield)
+5VDC (Black)
Freq. Input 2 (Red)
S L (Red)
GND (White/Shield)
+5VDC (Black)
S L (Red)
GND (White/Shield)
3
3
Analog Output 1
Analog Output 2
(if applicable)
(if applicable)
Frequency
Input
1
Frequency
Input 2
OR
S3L
Input
2
S3L
Input
1
+
-
+
-
2551 Magmeter
Blue Jumper OFF = S
3
L OUT
S L
3
3
4
8. Wiring the 3-2551-11 with Frequency or Digital (S
3
L) output
1
2
3
4
5-24 VDC
Ground
Not used
Frequency Out
2551 Magmeter
10K
Ω
Install a pull-up resistor when connecting the
2551 Magmeter to other manufacturer's flowmeters.
2551 Frequency Out to other Manufacturer's equipment
Blue Jumper ON = FREQ OUT
3
4
Frequency
1
2
3
4
5-24 VDC
Ground
Not used
9
8
7
Sensr Gnd
(SHIELD)
Sensr IN
(RED)
Sensr V+
(BLACK)
2551 Magmeter
8550-1 Flow Transmitter
Frequency
AUX power MUST be connected on the 8550 to provide power
to the 2551.
1
2
3
4
Ground
5-24 VDC
Not used
Frequency Out
2551 Magmeter
3-8900.621C
I/O Module 3-8900.401-X
1
2
3
4
5
6
7
8
+5VDC (Black)
Freq. Input (Red)
GND (Shield)
+5VDC (Black)
Freq. Input 2 (Red)
S L (Red)
3
Frequency
Input
1
Frequency
Input 2
OR
S3L
Input
2
2551 Frequency Out to Signet 8900
2551 Frequency Out to Signet 8550-1
9. Calibration and Software Con
fi
guration
No calibration is necessary to begin using the 2551.
The application and performance settings are pre-set to meet the requirements of most applications.
The 2551 application and performance settings can be customized using the 3-0250 USB to Digital (S
3
L) Con
fi
guration /
Diagnostic Tool and software. A Windows PC is required to adjust the following parameters:
•
4 to 20 mA span
: Factory setting is 0 to 5 m/s.
Can be customized to any range.
•
Noise Rejection Filter
: Factory set for 60 Hz.
Can be changed to 50 Hz.
•
Low Flow Cutoff
: Factory setting is 0.05 m/s.
Can be customized to any velocity.
•
Averaging Time
: Factory setting is 14 seconds
Can be customized from 0.1 seconds to 100 seconds
•
Sensitivity
: Factory setting is 25% of full scale
Can be customized to any % of full scale
The
MONITOR/VERIFY
SENSOR
function in the
Signet 3-0250 Setup Tool
software is very useful as a
system troubleshooting tool.
MONITOR/VERIFY SENSOR
