RKI Instruments GD-K11D - Manual (Page 5)

Model GD-K11D Operator’s Manual Overview • 1
Overview
The Model GD-K11D sample-draw transmitter is a single-point, fixed-instrument. It
continuously monitors for the target gas and alerts you to increasing gas levels with visual
alarms. Alarm contacts allow you to connect external alarms. The Model GD-K11D
includes a trouble alarm that alerts you to failure in the flow system and detection circuit.
The Model GD-K11D operates in two modes: measuring mode and maintenance mode.
Measuring Mode
Measuring mode is the mode in which the Model GD-K11D detects, measures, and
displays the target gas (normal operation).
Maintenance Mode
Maintenance mode allows you to perform maintenance tasks. These tasks include:
• adjusting the zero setting (see page 11)
• adjusting the K number when you replace a sensor (see page 18)
CAUTION: Maintenance mode includes five menus. Only menus 3 and 4 are for customer use.
Menus 1, 2, and 5 are for factory use only. The Model GD-K11D does not operate as
a gas detection device when you are in maintenance mode.
To place the Model GD-K11D in maintenance mode, press the MODE button for
approximately 3 seconds. The SKIP light flashes until you exit maintenance mode.
Specifications
Table 1 lists specifications for the Model GD-K11D.
Table 1: Specifications
Power Source 115 VAC
Target Gas Various (see Table 2)
Area Classification Indoor, non-hazardous locations
Sampling Method Sample-draw
Signal Output 4 to 20 mA
Response Time 90% in 60 seconds
Accuracy ± 5% of full scale
Flow Rate (to sensor) Approximately 0.5 liters/minute