Watlow 8LS Controller - Manual (Page 32)

24 8LS User’s Guide
Installation
RTD Inputs
The standard industrial RTD is a 100 ohm Platinum three wire
assembly. We highly recommend using the 3-wire RTD. The 8LS will
be configured for the standard three wire RTD input.
Watlow Anafaze offers two standard DIN 385 Curve RTD input ranges,
as shown in the table below:
RTD Range resistors are Watlow Anafaze factory stock in .05%
tolerance.
Infrared Non-contact Temp. Sensors
The IRSM (infrared sensing module) is ideally suited for many infrared
non-contact temperature applications. It can be supplied by Watlow
Anafaze as a fully integrated system with the 8LS configured to provide
power for up to four IRSM modules and for direct connection of the
IRSM output. The following connections are required if the IRSM
internal ambient sensor is not used:
RTD
Type Input
Range
Display
Resolution
RTD1 -100.0 to +300.0 ° C
-148.0 to +572.0 ° F
0.1 °
RTD2 -120.0 to 840.0 ° C
-184.0 to +1544.0 ° F
0.2 °
Range RA RB Alternate RC
RTD1 80
Ω
22 K
Ω
22 K
Ω
RTD2 100
Ω
48 K
Ω
48 K
Ω
8LS
Signal
IRSM Wires
Pin Color Function
Analog In + A Orange Signal Out (0-10 mAdc)
Analog In - B White Signal Ground
Analog Gnd K Shield
+5 Vdc E Red +5 Vdc supply
Logic Gnd C Black Power Ground
Logic Gnd J Brown No Peak Hold
No Connection D Green +15 Vdc supply
No Connection F Blue Ambient Sensor
No Connection H Yellow Track and Hold