100/180 mm PAPERLESS GRAPHIC RECORDER: USER GUIDE
HA028910
Issue 13 Sep 16
User Guide
Page 362
13.6 REMOTE CJC BLOCK OPTION
13.6.1 Introduction
This option allows up to 15 thermocouples of any type(s) to be connected to the recorder using miniature com-
pensating connectors. Thermocouples may be connected directly, or by using extension compensating cable.
Each row of fi ve sockets has an associated aluminium bar, to which is bonded a resistance temperature
detector (RTD) which acts as a cold junctions sensor, connected to the sixth channel of each of the three
input boards. For this reason, connector numbers 6 to 15 do not match the input channel numbering,
but the recorder confi guration names the channels in an unambiguous way, to reduce confusion. Table
13.6.1 gives details.
Table 13.6.1 Connector/channel cross reference
Connector 1 - Channel 1
Connector 2 - Channel 2
Connector 3 - Channel 3
Connector 4 - Channel 4
Connector 5 - Channel 5
Connector 6 - Channel 7
Connector 7 - Channel 8
Connector 8 - Channel 9
Connector 9 - Channel 10
Connector 10 - Channel 11
Connector 11 - Channel 13
Connector 12 - Channel 14
Connector 13 - Channel 15
Connector 14 - Channel 16
Connector 15 - Channel 17
13.6.2 Wiring
Caution
1. Before powering the recorder, check that the supply voltage to be applied, lies within the range
specifi ed on the serial number label on the underside of the case.
2. Thermocouples must not be attached to voltages greater than 24V,
As shown in Figure 13.6.2a, below, the line supply is terminated using an IEC connector at the rear of the
case. A socket is required to mate with the plug fi tted at the recorder. Minimum recommended conduc-
tor size is 16/0.2 (0.5mm
2
) (20AWG).
SIGNAL WIRING
Signal wiring consists of connecting the transducer wires into the correct type of plug (fi gure 13.6.2b),
and inserting the plugs into the relevant sockets at the rear of the recorder.
Figure 13.6.2a shows the arrangement of the connectors at the rear panel, and Figure 13.6.2c shows the
wiring between the portable case rear panel and the recorder.
Serial comms (option)
USB Ports (option)
Ethernet RJ45
L
N
E
Mains (supply)connection
1- 1+
Chan 1
Chan 2
Chan 3
Chan 4
Chan 5
Chan 7
Chan 8
Chan 9
Chan 10
Chan 11
Chan 13
Chan 14
Chan 15
Chan 16
Chan 17
6- 6+
11- 11+
2- 2+
7- 7+
12- 12+
3- 3+
8- 8+
13- 13+
4- 4+
9- 9+
14- 14+
5- 5+
10- 10+
15- 15+
Figure 13.6.2a Rear panel connector layout
+ wire
Figure 13.6.2b Connector detail (typical)
