SIGMA SQM-160 - Manual (Page 8)

Chapter 1 Quick Start
1-3
1.3 Rear Panel
Rear Panel Connections
Sensor 1 & 2 Connection to quartz crystal sensor remote oscillator. See
Section 1.4 for detailed hookup.
RS-232 Connection to computer serial port for programming and data
acquisition.
Relay I/O Connects 4 relays and 4 digital inputs to external equipment for
process control. See Appendix C for connections.
Option A Card Provides an additional four sensor measurement channels.
Option B Card Provides two 0-5V analog outputs for rate and thickness
readings.
Ground Terminal
Measurement ground terminal.
Voltage Selector W ARNING : Select 115V for 90-120VAC, 230V for 180-240VAC.
Line Fuse W ARNING : Replace line fuse only with a fuse of the specified
type and rating.
Power Connector W ARNING : Use removable power cords only of the specified
type and rating.
F u s e 1 / 2 A S B a t 1 2 0 V A C
F u s e 1 / 4 A S B a t 2 4 0 V A C
L i n e F u s e
Manufactured By Σ Model No. SQM-160
Ser No. 80901
i n s t r u m e n t s
S i g m a
Sensor 1 Sensor 2 RS-232
Option A Card
Relay I/O
Option B Card
2 2
0 1 1 0
1 0
Ground
Rate T h i c k
3 4 5 6