204 Specifications
Hold Output One TTL-compatible switch closure to ground. Maximum current sink:
100 mA. Low output indicates pumps stopped due to:
• Exceeding high-pressure limit
• Below low-pressure limit
• Abort input
• “Powerup” condition
Used to communicate with Hold input on Waters 717plus autosamplers
or other compatible input to prevent further injections.
Chart Output Two terminals (+,–) for recording pump flow-rate traces or monitoring
eluent composition changes. 10 mV analog output.
Pressure Output Two terminals (+,–) for recording pump pressure traces. 10 mV analog
output; bypasses microprocessor.
Inject Receives a signal from an external injector (autosampler or manual
injector) to initiate the chromatographic run. The Inject terminal also
provides a signal to start a Waters 745B/746 Data Module (integrator).
The Inject terminal accepts signals from several outputs, including TTL
signals, open collector outputs, and contact closures.
Ground Terminals Connected to signal ground and used as reference for one of the
following:
• Outputs (Hold, Inject and switches S1 to S4)
• Inputs (Inject and Abort) or
• 12-V power supply (not for use with 10-mV outputs)
Table A-3 Environmental Specifications
Item Specification
Temperature Operating Range: 4 to 38 °C (39.3 to 100.4 °F)
Storage Range: 0 to 50 °C (32 to 122 °F)
Humidity Operating Range: 20 to 90% Relative Humidity
Storage Range: 0 to 90% Relative Humidity (non-condensing)
Eluent Compatibility Compatible with eluents consistent with materials of construction
Table A-2 Electrical Specifications (Continued)
Item Specification
To Next Page
Loading...
