Chromalox 1604 User Manual download pdf (Page 6)

3

CONNECTION DIAGRAMS

Connections are to be made with the instrument

housing installed in its proper location.

Fig. 3

REAR TERMINAL BLOCK

NO

1

3

4

5

6

7

8

9

10

2

11

13

14

15

12

RS 485

NO

OUT3

SSR

OUT1

OUT2/3

LINEAR

NO

C

CPWR LINE

100/240VAC

A/A’B/B’

OUT2

IN

CT/SP-SP2

C

+

-

T/C

RTD

+

-

A) MEASURING INPUTS

NOTE: Any external component (like zener

barriers etc.) connected between sensor and

input terminals may cause errors in measurement

due to excessive and/or not balanced line

resistance or possible leakage currents.

TC INPUT

Fig. 4 THERMOCOUPLE INPUT WIRING

NOTE:

1) Don’t run input wires together with power ca-

bles.

2) For TC wiring use proper compensating cable

preferable shielded.

3) When a shielded cable is used, it should be

connected at one point only.

9

+

_

Shield

9

+

_

Shield

10

10

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