Aquametrix SHARK-120/240 Controllers User Manual User Manual

Page 129

Flow - Outputs Menu - 4-20mA CH1 Output 7.18

Page 127

MULTI-PARAMETER CONTROLLER & ANALYZER USER’S MANUAL

Flow - Outputs Menu - 4-20mA CH1 Output 7.18

DOWN

NOTE

PRESS THE AND KEYS

TOGETHER TO GO IMMEDIATELY BACK TO

RUN MODE

DOWN

The TUNE fuction allows the user to
precisely adjust the 4-20 mA output to
compensate for any errors in the output
circuitry. Normally, find turning the 4-
20mA output is not necessary.
The make the adjustment, place an
accurate current meter in series with the
4-20 mA output, with the appropriate
loads connected. When the TUNE menu
is selected, the controller puts 20 mA out
the terminals. Use the or
keys to adjust the 20mA output to get
exactly 20.
The TUNE value can be adjusted over the
range from 0 to 1000, these are unitless
numbers used for tuning purposes only.

Or press the
key to highlight
the Y character

With "N" selected, pressing the
key will NOT store the selection, but
simply return to the OUTPUTS Menu.
This function is useful if you wish to view
the current selection without making any
changes.

Then press the key to store the
selection and return to the OUTPUTS menu

Not stored

Stored

DOWN

The example below shows the 4-20 mA set to 4mA = 20 and 20mA = 90.
The output would then span 4 to 20 mA for a flow swing of 20 to 90.
Note that the span can reversed, in that 4 mA can be set to a high flow
value and 20 mA can be set to a low flow value, effectively reversing the
control direction.

DOWN

The Controller has 2 4-20mA outputs, electrically isolated from
each other and ground. Either output can source current into a
maximum of 800 ohms. See Section 3.12 for wiring diagram.
Channel 1 (the primary output) is located on the flip out door,
terminal plug P6. Channel 1 is dedicated to track the process
and has fully independent and fully adjustable 4 & 20 mA
output adjustments. This will enable the operator to span the
output over the desired range.

RUN MODE

Press the key once
which will move the cursor
back to the RH side of the
display.

If you wish to change the setting, press the
key once which will move the cursor to the first
character of the value to be changed

DOWN

Press the key to accept the
setting and move to the next setting

Use the and
keys to change the setting

DOWN

Press the key once
which will move the cursor
back to the RH side of the
display.

If you wish to change the setting, press the
key once which will move the cursor to the first
character of the value to be changed

DOWN

Press the key to accept the
setting and move to the next setting

Use the and
keys to change the setting

DOWN

Press the key once
which will move the cursor
back to the RH side of the
display.

If you wish to change the setting, press the
key once which will move the cursor to the first
character of the value to be changed

DOWN

Press the key to accept the
setting and move to the next setting

Use the and
keys to change the setting

DOWN

STORE? Y N

4-20mA CH1 PROC

OUTPUTS

CALIBRATION

DIAGNOSTICS

UTILITIES

SETUP

TOTAL 0

20mA TUNE 54 0 >

20mA TUNE 540 >

4-20mA CH1 PROC

4-20mA CH1

20mA TUNE 51 2 >

4-20mA CH1 PROC

20mA OUT 90.0 0 >

20mA OUT 90.00 >

20mA OUT 100.0 0 >

4-20mA CH1 PROC

4mA OUT 20.00 >

4mA OUT 20.0 0 >

4mA OUT 0.0 0 >

20mA TUNE 512 >

20mA OUT 100.00 >

4-20mA CH1 PROC

4mA OUT 0.00 >

4-20mA CH1 PROC

RELAY A

RELAY B

ALARM RELAY