Watlow MLS - Manual (Page 19)

Introduction
MLS User’s Guide 7
Specifications
This section shows specifications for the MLS, including inputs,
outputs, serial interface information, system power requirements, and
environmental and physical specifications.
Analog Inputs
Thermocouple Ranges
Number of control loops 16 dual output or 32 single output plus one pulse
loop.
Number of analog inputs 16 (with AIM-16) or 32 (with AIM-32).
Input switching Differential solid state MUX switching.
Input sampling rate 16 loops per second.
Analog over-voltage protection between
inputs 70 V peak to peak maximum.
Maximum analog input voltage +10 V from + or - input to analog common.
Common mode voltage 500 Vac maximum analog common to MLS-PM
or MLS-AIM power supply common.
CMR (Common Mode Rejection) >85 dB at 60 Hz, 110 dB typical.
A/D converter Integrates voltage to frequency.
Integration time per loop 33.3 ms at 60 Hz line frequency.
Input range -10 to +60 mV, or 0 to 25 V with scaling resis-
tors.
Resolution 0.02%, greater than 12 bits (internal)
Accuracy 0.1% at 25 ° C
Calibration Automatic zero and full scale.
Temperature coefficient Less than 100 ppm/ ° C, 0.01% per ° C.
Analog Ground to frame Ground Max.
potential 40 V
DC Common to frame Ground Max. poten-
tial 40 V
J -350 to 1400 ° F (-212 to 760 ° C)
K -450 to 2500 ° F (-268 to 1371 ° C)
T -450 to 750 ° F (-268 to 399 ° C)
B 150 to 3200 ° F (+66 to 1760 ° C)
S 0 to 3200 ° F (-18 to 1760 ° C)
R 0 to 3210 ° F (-18 to 1766 ° C)