Georg Fischer 8550 Operating Manual

Signet 8550-1 Flow Transmitter

*3-8550.090-1*

3-8550.090-1 J 4/05 English

English

WARNING!

• Remove power to unit before wiring input and out­put connections.

• Follow instructions carefully to avoid personal
injury.

1. Specifi cations

Dimensions

Optional

96 mm

(3.8 in.)

FRONT VIEW

Field Mount &

Panel Mount

96 mm
(3.8 in.)

41 mm
(1.6 in.

)

SIDE VIEW

Panel Mount

Rear
Cover

56 mm
(2.2 in.)

97 mm

(3.8 in.)

General

Compatibility: Signet Flow Sensors (w/freq out)

Enclosure:

• Rating: NEMA 4X/IP65 front

• Case: PBT

• Panel case gasket: Neoprene

• Window: Polyurethane coated polycarbonate

• Keypad: Sealed 4-key silicone rubber

• Weight: Approx. 325g (12 oz.)

Display:

• Alphanumeric 2 x 16 LCD

• Update rate: 1 second

• Contrast: User selected, 5 levels

• Display accuracy: ±0.5% of reading @ 25ºC

• Thermal sensitivity shift: ±0.005% of reading per ºC

Electrical

• Power: 12 to 24 VDC ±10%, regulated
61 mA max current

Sensor Input:

• Range: 0.5 to 1500 Hz

• Sensor power: 2-wire: 1.5 mA @ 5 VDC ± 1%
3 or 4 wire: 20 mA @ 5 VDC ± 1%
Optically isolated from current loop

• Short circuit protected

92 mm
(3.6 in.)

Contents

1. Specifi cations

2. Installation

Flow 6.25 GPM

Total 1234567.8>

Signet Flow
Transmitter

3. Electrical Connections

4. Menu Functions

82 mm
(3.23 in.)

106 mm
(4.18 in.)

SIDE VIEW

Field Mount w/
8050 Universal base

102 mm

(4.0 in.)

SIDE VIEW

Field Mount w/
8051 Integral kit

Current output:

• 4 to 20 mA, isolated, fully adjustable and reversible

• Max loop impedance: 50 Ω max. @ 12 V
325 Ω max. @ 18 V
600 Ω max. @ 24V

• Update rate: 100 ms

• Accuracy: ±0.03 mA

Open-collector output, optically isolated:

• 50 mA max. sink, 30 VDC maximum pull-up voltage.

• Programmable for:

• High or Low setpoint with adjustable hysteresis

• Pulse operation (max rate: 300 pulses/min).

Environmental

• Operating temperature: -10 to 70°C (14 to 158°F)

• Storage temperature: -15 to 80°C (5 to 176°F)

• Relative humidity: 0 to 95%, non-condensing

• Maximum altitude: 2000 m (6562 ft)

• Insulation category: II

• Pollution degree: 2

Standards and Approvals

• CSA, CE, UL listed

• Immunity & Emissions: EN61326

• Manufactured under ISO 9001 and ISO 14001

ENTER

96 mm

(3.8 in.)

2. Installation

ProcessPro transmitters are available in two styles: panel mount and fi eld mount. The panel mount is supplied with the necessary
hardware to install the transmitter. This manual includes complete panel mounting instructions.
Field mounting requires one of two separate mounting kits. The 3-8051 integral kit joins the sensor and instrument together into a single
package. The 3-8050 Universal kit enables the transmitter to be installed virtually anywhere.
Detailed instructions for integral mounting or other fi eld installation options are included with the 3-8051 Integral kit or the 3-8050
Universal kit.

2.1 Panel Installation

1. The panel mount transmitter is designed for installation using a 1/4 DIN Punch. For
manual panel cutout, an adhesive template is provided as an installation guide.
Recommended clearance on all sides between instruments is 1 inch.

gasket

panel

terminals

mounting

bracket

2. Place gasket on instrument, and install in panel.

3. Slide mounting bracket over back of instrument until quick-clips snap into latches on

latch

u

p

r

t

u

w

O

P

m
e
t

s

4

y

S

-

p

o
o

L

r

2

w

P

m
e
t

s
y
S

+

p

o
o
L

u

tp

1

u

O

3

side of instrument.

4. To remove, secure instrument temporarily with tape from front or grip from rear of
instrument. DO NOT RELEASE.

Panel Mount
Installation Detail

Press quick-clips outward and remove.

3. Electrical Connections

Caution: Failure to fully open terminal jaws before removing wire may permanently damage instrument.

Wiring Procedure

1. Remove 0.5 - 0.625 in. (13-16 mm) of insulation from wire end.

2. Press the orange terminal lever downward with a small screwdriver to open terminal jaws.

3. Insert exposed (non-insulated) wire end in terminal hole until it bottoms out.

4. Release orange terminal lever to secure wire in place. Gently pull on each wire to ensure a good connection.

Wiring Removal Procedure

1. Press the orange terminal lever downward with a small screwdriver to open terminal jaws.

2. When fully open, remove wire from terminal.

Terminals 3 and 4: Loop Power

12-24 VDC ±10% system power

and current loop output.

Max. loop impedance:

50 Ω max. @ 12 V
325 Ω max. @ 18 V
600 Ω max. @ 24 V

Terminals 7-9: Flow sensor input

t

t

-

+

d
n

G
r
s

n

)

e

S

D

L
IE

H
S
(

7

N

I
r
s

n
e

S

)
D

E
R
(

6

+

V
r
s

n
e

)

S

K
C
A

L
B
(

5

quick-clips

2

1

System Pwr

4

Loop -

System Pwr

3

Loop +

AUX

2

Power -

AUX

1

Power +

Terminals 1 and 2: AUXILIARY power

Used only if the fl ow sensor requires more
than 1.5 mA current. For Signet sensors
this is limited to the following products:

• 2000 • 2507 • 2551

• Open Collector Input

Output -

6

Output +

5

Internal open-collector

output circuit

S

Isolation

D

15

Output --

Output +

Sensr Gnd

9

(SHIELD)

Sensr IN

8

(RED)

Sensr V+

7

(BLACK)

Internal open-collector

output circuit

S

Isolation

D

Outputs

15

1

_

+

SINGLE CHANNEL DUAL CHANNEL

Terminals 5 and 6: Open-collector Output

A transistor output, programmable (see CALIBRATE menu) as:

• High or Low setpoint with adjustable hysteresis

• Volumetric pulse

• Frequency based on fl ow rate

• May be disabled (Off) if not used.

2

2 Signet 8550-1 Flow Transmitter

3.1 System Power/Loop Connections

Stand-alone application, no current loop used

System Pwr Loop -

System Pwr Loop +

* See AUX POWER Note

AUX Power -

AUX Power +

Transmitter

Terminals

4

4

3

3

2

2

1

1

­+

Power

Supply

12-24 VDC

Connection to a PLC/Recorder, separate supply

Connection to a PLC with built-in power supply

PLC or Recorder

Transmitter

Terminals

System Pwr Loop -

System Pwr Loop +

AUX Power -

AUX Power +

Transmitter

Terminals

4

4

3

3

2

2

1

1

+

-

-

12-24 VDC

+

Loop Input

4-20 mA

Power

Supply

System Pwr Loop -

System Pwr Loop +

AUX Power -

AUX Power +

* See AUX POWER Note * See AUX POWER Note

Example: Two transmitters connected to PLC/Recorder with separate power supply

PLC or Recorder

+

Channel 1
4-20 mA in

-

-

System Pwr Loop -

System Pwr Loop +

AUX Power -

AUX Power +

Transmitter 1

Terminals

4

3

2

1

+

Channel 2
4-20 mA in

Transmitter 2

Terminals

4

4

3

3

2

2

1

1

Internal

PLC

4

System Pwr Loop -

4

3

System Pwr Loop +

3

2

AUX Power -

2

1

AUX Power +

1

Connection

PLC Terminals

Loop Input

+

4-20 mA

-

Power

-

Supply

+

12Ð24 VDC

Power

-

Supply

12-24 VDC

+

Auxiliary Power note:

AUXILIARY power is used only if the flow sensor requires more than 1.5 mA current.
For Signet sensors this is limited to the following products: 2000, 2507, 2551, open collector input signals

3.2 Sensor Input Connections

Wiring Tips:

Transmitter

Total 1234567.8>

• Do not route sensor cable in conduit containing AC power wiring.
Electrical noise may interfere with sensor signal.

• Routing sensor cable in grounded metal conduit will help prevent
electrical noise and mechanical damage.

• Seal cable entry points to prevent moisture damage.

• Only one wire should be inserted into a terminal. Splice double wires
outside the terminal.

Terminals

Sensr Gnd

9

(SHIELD)

Sensr IN

8

(RED)

Sensr V+

7

(BLACK)

No Aux Power

515/3-8510-XX
525
2100
2517
2536/3-8512-XX
2540
7000 Vortex

Aux Power

2000
2507
2551
Open Coll.
Input

Maximum cable length is 200 ft. for 515/8510-XX,
525 , 2517 and any sinusoidal fl ow signal.

Transmitter

Total 1234567.8>

Maximum cable length is 1000 ft. for
2536/8512-XX, 2540, vortex, and any open
collector fl ow signal.

* See AUX POWER Note

Flow 6.25 GPM

Signet Flow
Transmitter

ENTER

≤

200 ft. (61 m)

Flow 6.25 GPM

Signet Flow
Transmitter

ENTER

≤

1000 ft. (300 m)

3 Signet 8550-1 Flow Transmitter

3.3 Open Collector Output

The Open collector output can be used as a switch that responds
when the fl ow rate moves above or below a setpoint, or it can be
used to generate a pulse that is relative to the fl ow volume or to
the fl ow rate.

Process

Hysteresis

• Low
Output triggers when the fl ow rate is less than the setpoint.
The output will relax when the fl ow rate moves above the setpoint
plus the hysteresis value.

• High
Output triggers when the fl ow rate is greater than the setpoint.
The output will relax when the fl ow rate drops below the setpoint
plus the hysteresis value.

• Frequency
Output is a pulse stream that is based on the input fl ow sensor
signal. Set for 1 (input frequency = output frequency). Set for

even numbers (2, 4, 6, 8 . . . . 254 maximum) to scale output

frequency.

• Pulse
Output is a pulse based on the volume of fl uid that passes the
sensor. Set any value from 0.0001 to 99999.

The output may be disabled (Off) if not used.

Low Setpoint

Time

Output energized

Output relaxed

Process

High Setpoint

Hysteresis

Time

VIEW menu

• During normal operation, the ProcessPro displays the VIEW menu.

• When using the CALIBRATE or OPTIONS menus, the ProcessPro will return to the VIEW menu if no activity
occurs for 10 minutes.

• To select the item you want displayed, press the UP or DOWN arrow keys. The items will scroll in a
continuous loop. Changing the display selection does not interrupt system operations.

• No key code is necessary to change display selection.

• Output settings cannot be edited from the VIEW menu.

View Menu

Display Description

0.0 GPM

Total: 12345678 >

All of the displays below are temporary. After ten minutes the display will return to the permanent display.

Perm: 12345678

Gallons

Loop Output:

12.00 mA

Last CAL:

04-20-06

Monitor the fl ow rate and the resettable totalizer. Press the RIGHT ARROW key
to reset the totalizer. If the Reset is locked, you will need to enter the Key Code
fi rst. Lock or Unlock the totalizer in the OPTIONS menu. This is the permanent
View display.

Monitor the Permanent Totalizer value.

Monitor the 4-20 mA Loop output.

Monitor date for scheduled maintenance or date of last calibration. (See
description in Calibrate Menu.)

Flow 6.25 GPM

Total 1234567.8>

Signet Flow
Transmitter

ENTER

4 Signet 8550-1 Flow Transmitter

ProcessPro Editing Procedure:

Step 1. Press and hold ENTER key:

• 2 seconds to select the CALIBRATE menu

• 5 seconds to select the OPTIONS menu.

Step 2. The Key Code is UP-UP-UP-DOWN keys in sequence.

• After entering the Key Code, the display will show the fi rst item in the selected menu.

Step 3. Scroll menu with UP or DOWN arrow keys.
Step 4. Press RIGHT ARROW key to select menu item to be edited.

• The fi rst display element will begin fl ashing.

Step 5. Press UP or DOWN keys to edit the fl ashing element.

• RIGHT ARROW key advances the fl ashing element.

Step 6. Press ENTER key to save the new setting and return to Step 3.

Notes on Step 1:

• The View Menu is normally displayed.

• The CALIBRATE and OPTIONS menus require a KEY CODE.

Press &
hold for
access:

VIEW

ENTER

Notes on Step 2:

If no key is pressed for 5 minutes while display is showing "Enter
Key Code", the display will return to the VIEW menu.

2s 5s

CALIBRATE

OPTIONS

Notes on Steps 3 and 4:

• Refer to pages 6 and 7 for complete listing of menu items and their use.

• From the Step 3 display, pressing the UP and DOWN keys simultaneously will
return the display to the VIEW menu.

• If no key is pressed for 10 minutes, display will also return to the VIEW menu.

Step 3: Finished Editing?

Press the UP and DOWN keys simultaneously after
saving the last setting to return to normal operation.

CALIBRATE: ----

Enter Key Code

CALIBRATE: *---

Enter Key Code

CALIBRATE: **--

Enter Key Code

CALIBRATE: ***-

Enter Key Code

Flow Units:

GPM >

Flow Units:

Output Setpnt:

20.0 GPM >

First item in CALI­BRATE menu

GPM >

Step 3

Step 4

Notes on Steps 5 and 6:

• All output functions remain active during editing.

Output Setpnt:

• Only the fl ashing element can be edited.

• RIGHT ARROW key advances the fl ashing element in a continuous loop.

• Edited value is effective immediately after pressing ENTER key.

• If no key is pressed for 10 minutes unit will restore the last saved value and return to step 3.

• Step 6 (pressing ENTER key) always returns you to Step 3.

• Repeat steps 3-6 until all editing is completed.

Step 5: Made an Error?

Press the UP and DOWN keys simultaneously
while any element is fl ashing. This will recall the
last saved value of the item being edited and
return you to Step 3.

2

0.00 GPM

Output Setpnt:

1

0.00 GPM

Output Setpnt:

0

1

Step 6

Output Setpnt:

19.00 GPM >

.00

GPM

Output Setpnt:

9

1

Step 5

.00 GPM

ENTER

Output Setpnt:

Saving

5 Signet 8550-1 Flow Transmitter

Calibrate Menu

Display

(Factory settings shown)

Description

Flow Units:

GPM >

The fi rst three characters set the Flow Rate units of measure. They have no effect on
calculations. They may be any alpha or numeric character, upper or lower case.
The last character sets the Flow rate Timebase. Select S (seconds), M (minutes), H (hours)
or D (days).

Flow K-Factor:

60 >

Total Units:

This setting tells the transmitter how to convert the input frequency from the fl ow sensor into
a fl ow rate. The K-factor is unique to the sensor model and to the pipe size and schedule.
Refer to data in the sensor manual for the correct value. Limits: 0.0001 to 99999. (The
K-factor cannot be set to 0)

This setting identifi es the Totalizer units. It has no effect on any calculation. It serves as a
label only. Each character can be any alpha or numeric selection, upper or lower case.

Gallons >

Total K-Factor

60 >

Loop Range: GPM

000.00 → 100.00 >

This setting tells the transmitter how to convert the input frequency from the fl ow sensor into
a volumetric total. It also is used as the basis for the Open Collector pulse mode.
The setting is usually the same as the Flow K-factor, or different by x10 or x100. Limits:

0.0001 to 99999. (The K-factor cannot be set to 0)

Select the minimum and maximum values for the 4-20 mA Current loop output. The 8550
will allow any values from 0.0000 to 99999.

Output Mode:

Select the desired mode of operation for the Open Collector output. Options available are
High, Low, volumetric Pulse, or Frequency. The signal may be disabled (Off) if not used.

Low >

Output Setpnt:

In Low or High Mode, the Open Collector output will be activated when the Flow rate
reaches this value. Be sure to modify this setting if you change the Flow Units.

10.0 GPM >

Output Hys:

5.0 GPM >

The Open Collector output will be deactivated at Setpoint ± Hysteresis, depending on High
or Low Setpoint selection. (See details on page 4.)

Output Volume:

100.00 Gallons >

Output PlsWdth:

In Pulse mode, the Open collector output will generate one pulse when this volume of fl ow
passes the sensor. The measurement is based on the Total K-factor. The 8550 will allow
any value from 0.0001 to 99999.

In Pulse mode, this setting defi nes the duration of the Open Collector output pulse. The
8550 allows any value from 0.1 seconds to 999.9 seconds.

0.1 Seconds >

Output Freq.:

Divide by 1 >

In Frequency mode, the Open Collector output will simulate the sensor frequency, divided
by this setting. Set for 1 (input frequency = output frequency). Set for even numbers
(2, 4, 6, 8 . . . 254 maximum) to scale output frequency.

Last CAL:

4-20-06

6 Signet 8550-1 Flow Transmitter

Use this “note pad” to record important dates, such as annual recertifi cation or scheduled
maintenance.

Options Menu

Display

(Factory settings shown)

Contrast:

3 >

Flow Decimal

*****. >

Total Decimal

******.** >

Averaging:

Off >

Sensitivity

0 >

Total Reset:

Lock Off >

Adjust the LCD contrast for best viewing. A setting of 1 is lower contrast, 5 is higher.
Select lower contrast if the display is in warmer ambient surroundings.

Set the decimal to the best resolution for your application. The display will automatically
scale up to this restriction.
Select *****., ****.*, ***.**, **.*** or *.****

Set the totalizer decimal to the best resolution for your application.
Select ********., *******.*, or ******.**

OFF provides the quickest output response to changes in fl ow.
Longer averaging period produces more stable display and output response.
Select OFF, 8 s, 20 s, 50 s or 120 s.

Sensitivity works in conjunction with Averaging to balance response time with signal
stability. Selections are 0 to 9. Select 0 (zero) for the minimum sensitivity, or 9 for the
maximum sensitivity. The function is described below.

Lock Off : No key code required to reset the resettable totalizer.
Lock On : The Key Code must be entered to reset the resettable totalizer.

Description

Loop Adjust:

4.00 mA >

Loop Adjust:

20.00 mA >

Output Active:

Low >

Test Loop:

Adjust the minimum and maximum current output. The display value represents the
precise current output.
Adjustment limits:

• 3.80 mA < 4.00 mA > 5.00 mA

• 19.00 mA < 20.00 mA > 21.00 mA
Use this setting to match the system output to any external device.

Active HIGH: This setting is used to turn a device (pump, valve) ON at the setpoint.

Active LOW: This setting is used to turn a device OFF at the setpoint.

Press UP or DOWN keys to manually order any output current value from 3.6 mA to

21.00 mA to test current loop output.

>

Test Output:

>

No AVERAGING, no SENSITIVITY

With AVERAGING set to 0 (zero) and with SENSITIVITY set to zero,
the 8550 responds to every unstable shift in the fl ow. The dashed
red line represents the actual output of the fl ow sensor in unstable
fl ow conditions .

Press UP or DOWN keys to manually toggle the state of open collector output.

AVERAGING only

With AVERAGING set to 50 seconds and SENSITIVITY still set to
zero the fl ow rate is stabilized, but a sharp change in fl ow rate is not
represented for 50 seconds or longer. (dotted green line).

AVERAGING and SENSITIVITY

With AVERAGING at 50 seconds and SENSITIVITY set to 4 OR 5,
the fl ow rate is stabilized, while the sudden shift in fl ow is refl ected
very quickly. (Solid blue line)

NOTE: The SENSITIVITY function is ineffective if the AVERAGING function is set to zero (seconds).

10 s2 s 20 s 30 s 40 s 50 s 60 s 70 s

7 Signet 8550-1 Flow Transmitter

Troubleshooting

Display Condition Suggested SolutionsPossible Causes

“- - - - -”

“Pulse Overrun”

“Value must be more than 0”

Open Collector is always
activated

Flow rate exceeds display capability

• Open Collector pulse rate exceeds
maximum of 300 pulses per minute.

• Pulse width set too wide.

K-factors cannot be set to 0.

• Hysteresis value too large

• Defective transmitter

• Increase Flow units time base

• Move fl ow decimal one place to the right

• Increase Pulse volume setting

• Decrease pulse width setting.

• Reduce system fl ow rate

Enter K-factor from 0.0001 to 99999

• Change the hysteresis value

• Replace transmitter

Ordering Information

Mfr. Part No. Code Description

3-8550-1 159 000 047 Flow transmitter, Field mount
3-8550-1P 159 000 048 Flow transmitter, Panel mount
3-8550-2 159 000 049 Flow transmitter, Field mount with relays
3-8550-2P 159 000 050 Flow transmitter, Panel mount with relays
3-8550-3 159 000 051 Flow transmitter, Field mount with dual input/output
3-8550-3P 159 000 052 Flow transmitter, Panel mount with dual input/output

Accessories

Mfr. Part No. Code Description

3-8050 159 000 184 Universal mounting kit
3-8051 159 000 187 Flow Integral Mnt NPT
3-8050.395 159 000 186 Splashproof rear cover
3-8050.396 159 000 617 RC Filter kit (for relay use)
3-0000.596 159 000 641 Heavy duty wall mount bracket
3-5000.598 198 840 225 Surface Mount Bracket
3-5000.399 198 840 224 5 x 5 inch adapter plate for Signet retrofi t
3-9000.392 159 000 368 Liquid tight connector kit for rear cover (includes 3 connectors)
3-9000.392-1 159 000 839 Liquid tight connector kit, NPT (1 piece)
3-9000.392-2 159 000 841 Liquid tight connector kit, PG13.5 (1 piece)
7300-7524 159 000 687 24 VDC Power Supply 7.5
7300-1524 159 000 688 24 VDC Power Supply 15
7300-3024 159 000 689 24 VDC Power Supply 30
7300-5024 159 000 690 24 VDC Power Supply 50
7300-1024 159 000 691 24 VDC Power Supply 100

Ω, 300mA
Ω, 600mA
Ω, 1.3 A
Ω, 2.1 A

Ω, 4.2 A

George Fischer Signet, Inc. 3401 Aerojet Avenue, El Monte, CA 91731-2882 U.S.A. • Tel. [phone] • Fax [phone]
For Worldwide Sales and Service, visit our website: www.gfsignet.com • Or call (in the U.S.): [phone]

3-8550.090-1 J 4/05 English © George Fischer Signet, Inc. 2002 Printed in U.S.A. on Recycled Paper