78
This configuration does not provide the isolation that may be required at the computer or
printer interface. Table 9 explains the function of each of the individual jumper closures.
Table 11 Current Loop Customer Connection Box
Post No.
Description
Function
7
Current loop in (+)
Data input loop, positive
8
Current loop in (-)
Data input loop, negative
9
Current loop out (+)
Data output loop, positive
10
Current loop out (-)
Data output loop, negative
Table 12 RS-232C Cable Configuration
pH/ORP Meter
TB1Connection
Host Computer/Printer
Connection
TB1-3 (TXD)
(RXD)
TB1-2 (RXD)
(TXD)
TB1-1 (COM)
(COM)
(RTS) to (CTS)*
* If the lines can be disabled through hardware or software, then
this jumper is not needed.
(DSR) to (DTR)*
Table 13 RS-232C Line Signal Definitions
Signal Name
Description
TXD
Transmitted Serial Data (Output)
RXD
Received Serial Data (Input)
RTS
Request To Send (Output). This signal requests permission to transmit data.
Hardware handshaking uses this signal.
CTS
Clear To Send (Input). This signal indicates the equipment is ready to receive
data. Hardware handshaking uses this signal.
DSR
Data Set Ready (Input). This signal indicates that the remote equipment has a
data block ready to transmit. Hardware handshaking uses this signal.
DTR
Data Terminal Ready (Output). This signal indicates that the equipment has a
data block ready to transmit. Hardware handshaking uses this signal.
COM
Signal Ground (Common Return)
SHLD
Protective Ground used for shielding
Summary of Contents for EC1000
Page 2: ...2...
Page 8: ...8...
Page 12: ...12...
Page 14: ...14...
Page 16: ...16...
Page 18: ...18 Figure 1 Controller Front Panel...
Page 20: ...20 Figure 2 Pump Module...
Page 24: ...24 Figure 6 pH Control Loop...
Page 54: ...54...
Page 56: ...56...
Page 58: ...58 Figure 12 Controller Installation Panel Mount...
Page 61: ...61 Figure 15 Installing the pH ORP Electrode Figure 16 Flow Thru Cell...
Page 70: ...70...
Page 73: ...73 6 4 Calibration See Section 2 3 Calibration Figure 21 Priming Tee Operation...
Page 74: ...74...
Page 80: ...80...
Page 83: ...83 Figure 24 Sensor Replacement...
Page 85: ...85 Figure 25 Hach One pH Process Electrode...
Page 89: ...89 Figure 26 Pump Module Plumbing Diagram...
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