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8550-3 Flow Transmitter
‡ SIGNET
Calibrate Menu
Display
(Factory settings shown)
Description
The first 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)
This setting tells the transmitter how to convert the input frequency from the flow sensor into a
flow 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 identifies the Totalizer units. It has no effect on any calculation. It serves as a
label only. Each character can be any alpha or numerical selection, upper or lower case.
This setting tells the transmitter how to convert the flow sensor signal 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 input source to be associated with Loop output #1:
Flow sensor #1, Flow sensor #2, or Delta Flow.
Select the minimum and maximum values for the Current loop output #1.
The 8550 will allow any values from 0.0000 to 99999.
Select the input source for Open Collector output #1: Flow sensor #1, Flow sensor #2, or
Delta Flow.
Select the mode of operation for Open Collector output #1.
Options available are High, Low, Pulse (volumetric), or Frequency (based on rate).
The signal may be disabled if not in use.
In Low or High Mode, this 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.
The Open Collector output will be deactivated at Setpoint
±
Hysteresis, depending on High or
Low Setpoint selection. (See details on page 4.)
In Pulse mode, Open collector output #1 will generate one pulse when this volume of flow
passes the sensor. (The measurement is based on the Total1 K-factor).
The 8550 will allow any value from 0.0001 to 99999.
In Pulse mode, this setting defines the duration of Open Collector output pulse #1. The 8550
allows any value from 0.1 seconds to 999.9 seconds.
In Frequency mode, Open Collector output #1 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 fequency.
Use this “note pad” to record important dates, such as annual recertification or scheduled
maintenance.
Flow1 Units:
GPM
>
Flow1 K-Factor:
60.000
>
Total1 Units:
Gallons
>
Total1 K-Factor:
60.00
>
Loop1 Source:
Flow1
>
Loop1 Range: GPM
000.00
→
→
→
→
→
100.00
>
Output1 Source:
Flow1
>
Output1 Mode:
Low
>
Output1 Setpnt:
1.0 GPM >
Output1 Hys:
5.0 GPM >
Output1 Volume:
100.00 Gallons
>
Output1 PlsWdth:
0.1 Seconds
>
Output1 Freq.:
Divide by 1 >
Last CAL:
06-30-01
All functions labeled "1" will repeat for channel 2.
