Teledyne 3000ZA2G - Zirconium oxide analyzer - Manual (Page 18)

Introduction 3000ZA2G
Teledyne Analytical Instruments 6
 Sample Inlet and Outlet: One inlet (must be externally
valved) and one exhaust. Three inlets when auto calibration
option is present.
 Reference Inlet and Outlet: Flowing air reference inlet and
exhaust.
 9-Pin RS-232 Port: Serial digital concentration signal
output and control input.
 50-Pin Equipment Interface Port:
Analog Outputs: 0–1 VDC oxygen concentration plus
0-1 VDC range ID
Alarm Connections: 2 concentration alarms and 1
system alarm.
Remote Valve: Used in the 3000ZA2G for controlling
external solenoid valves only.
Remote Span/Zero: Digital inputs allow external
control of analyzer calibration.
Calibration Contact: To notify external equipment that
instrument is being calibrated and readings are not
monitoring sample.
Range ID Contacts: Four separate, dedicated, range
relay contacts. Low, Medium, High, Cal.
Network I/O: Serial digital communications for local
network access. For future expansion. Not currently
implemented.
Optional
 Calibration Gas Ports: Separate fittings for zero, span, and
sample gas input, internal valves for automatic gas switching.
 Current Signal Output: Additional isolated 4–20 mA DC
plus 4–20 mA DC range ID.
Note: If you require highly accurate Auto-Cal timing, use external
Auto-Cal control where possible. The internal clock in the
Model 3000ZA2G is accurate to 2-3 %. Accordingly,
internally scheduled calibrations can vary 30-45 minutes
per day.