Condec DLR3110 - Manual (Page 16)

12 DLR3110 Rack Mount Digital Pressure Calibrator Manual
5.0 Configuration and Calibration
The following sections cover configuration and calibration of the DLR3110. For information on calibrating the unit
without configuration changes, see Section 4.0 on page 10.
During the following procedures, the computer within the DLR3110 is actually being re-programmed. The pressure
standard being used during calibration should be in satisfactory condition and fully understood by the service
technician. In addition, the DLR3110 must be warmed up for approximately 30 minutes and electrically stabilized
prior to performing a calibration cycle.
5.1 Pneumatic Calibration Set-Up
Figure 5-1 defines a typical calibration set-up using a floating piston type dead weight tester. Any precision
standard is acceptable to use providing its basic accuracy is at least twice that of the DLR3110’s.
5.2 Instrument Calibration Set-Up
Check that the INPUT valve (1) is closed (rotate clockwise until it stops) and that the VENT valve (2) is open
(two turns counter-clockwise from its stop).
Figure 5-1. Instrument Calibration Set-up
NOTE: AC input and input port are on the back side of rack-mountable calibrator.
5.3 Mode Selection Switch (S1)
• Main set-up mode - Allows access to the Configuration and Calibration modes.
• Calibration mode - Accesses the Calibration mode directly.
• I/O mode - Allows direct access to the set up of the Serial I/O ports (ports 1 and 2), BCD, Analog output,
discrete inputs/outputs.
• Diagnostic mode - Accesses a diagnostic mode for troubleshooting and evaluation (factory access only).
VENT
PNEUMATIC PRESSURE
TESTER
"ON-OFF"
2-WAY VALVE
TARE ZERO DISPLAY
YES ENTER
PRINT
CE
PSI
NO
P Gage Abs
VENT
TEST PORT
MONITOR
PRESSURE LIMIT
VERNIER
CONTROL
INPUT
POWER
DECREASE
INCREASE
7 8 9 4 5 6
1 2 3 10