ABB 4630 - Page 31

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SET UP RETRANS 2
RTX O/P pH
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Temp
RTX Type 4-20
0-20
0-10
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Red.
RTX Span (Units)
800
.
RTX Zero (Units)
200
.
FACTORY SETTINGS
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Hold Outputs Yes
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No
Test Retrans (%)
00
.
Continued from previous page.
7 PROGRAMMING
…7.5 Set Up Retransmission Page
Retransmission 2 Page header
Note. The second retransmission output is available only on 4630/800, 4631/800,
4635/800 and 4636/800 instruments.
Retransmission 2 Output Current Range
The retransmission 2 output can be selected from three mA current ranges to ensure
compatibility with the peripheral device connected.
Select the current range required for retransmission 2 output.
Retransmission 2 Output Assignment
The retransmission 2 output can be assigned to monitor Temperature and either pH or
Redox, dependent upon the
Probe Type selected – see Section 7.3, Set Up Parameters Page.
Note. The pH and Temp options are not available when Probe Type is set to
Redox (ORP).
Note. The Temp option is not available when Probe Type is set to
pH Antimony or pH Glass and manual temperature compensation is selected –
see Section 7.3,
Set Up Parameters Page.
Select the retransmission 2 output assignment required.
Retransmission 2 Span
Set the required retransmission 2 span output. This is adjustable to between 2.00 and
14.00 (pH), –850 and 1000mV (Redox) or either 10.0 and 150.0°C or 50.0 and 302.0°F
(Temp).
Retransmission 2 Zero
Set the required retransmission 2 zero output. This is adjustable to between 0.00 and
14.00 (pH), –1000 and 850mV (Redox) or either –10.0 and 130.0°C or 14.0 and 266.0°F
(Temp).
Note. The minimum range is any 2pH units within the 0.00 to 14.00pH range,
150mV within the –1000 to 1000mV range (Redox) or either 20°C within the –10.0 to
130.0°C range or 36°F within the 14.0 to 266.0°F range (Temp).
Hold Ouputs
The retransmission and alarm outputs can be held to prevent inadvertant operation
during pH calibration. Select Yes or No.
Test Retransmission Output
The instrument automatically transmits a test signal of 0, 25, 50, 75 or 100% of the
retransmission range selected above. The % test signal selected is shown on the upper
display.
Example – for a selected range of 0 to 20mA and 50% retransmission test signal, 10mA
is transmitted.
Select the required retransmission test signal.
Advance to Factory Settings Page.