Sensorex TX3000 - 4 Overview of TX3000 Ph;Orp Transmitter; Illustration of Terminal Function

PRODUCT INSTRUCTION MANUAL
Page 5 of 29
Part 4 TX3000 Overview (cont.)
GLASS
REF
GND
TP
TP
pH/
ORP
T
HI
LO
WASH
POWER
AC
INPUT
POWER
TX3000
only
2
4-20mA
4-20mA
1
+/-12V
+
+
+
-
-
-
-
4.2 Terminal Functions:
4.3 Description of terminal function:
1 & 2 - 100~240AC: Power supply terminal
3 & 4 - WASH: External wash relay terminal
5 & 6 - REL2: LO, External relay terminal low control
7 & 8 - REL1: HI, External relay terminal high control
9 - N/C
10 - 4~20mA – terminal /G: Temperature current output terminal -
11 - 4~20mA – terminal /G: Temperature current output terminal +
12 - 4~20mA - terminal: Master measurement current output terminal -
13 - 4~20mA - terminal: Master measurement current output terminal +
14 & 15 +/- 12V output
16 - T/P: temperature probe
17 - SG : Connect the other end of temperature probe, or used as ±12V ground potential. In two-wire distributing
system, there should be a short circuit between this terminal and REF (a short circuit jumper is attached from
the factory)
18 - REF: Coaxial shield connecting pH/ORP electrode signal wire
19 - NC: NC
20 - GLASS: Coaxial inner conductor= pH/ORP electrode signal wire
FIG 4-2
Form: INSTRTX3000-Rev A
Not
Used