Model number, 9|2|o|a, Series 920 model number breakdown – Watlow Series 920 Microprocessor-Based Ramping Control User Manual
Page 61

Series 920 Model Number Breakdown
Control
Series
920 =
Input
2 =
3
=
4
=
#1 output
B =
c =
D =
E
=
F
=
#2 output
A =
B =
c =
D =
|9|2|O|A|-|
Single channel, microprocessor based,
dual output, ramping controller, 99 steps, 1/4
DIN.
Type J, K, T thermocouple, 0-5VDC, 1° RTD
Type J, K, T thermocouple, 4-20mA, 0.1° RTD
Type R, S, B thermocouple
Solid state relay, Form A, 0.5A, RC Suppression
Switched DC, open collector, non-isolated
Electromechanical relay, Form C, 6A
(Warranted to 100,000 cycles only)
Triac, 15A, resistive, external
Process, 4-20mA, non-isolated
None
Solid state relay, Form A, 0.5A, RC suppression
Switched DC, open collector, non-isolated
Electromechanical relay, Form C, 6A
(Warranted to 100,000 cycles only)
Communications
A = None
B =
Isolated RS-422/RS-423
|o
|o|o|
WATLOW Series 920 User's Manual 61