GLS Sampler
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1.9 Connecting External Devices
The GLS can be used with external devices that
control the sampler pacing, sampler inhibiting,
or both. The sampler pacing input can control
the rate of sample collection so that it is
proportional to the flow rate of a channel. This
input must be used when the Flow Paced
program option is selected (see
,
section 2.4.1). The sampler inhibit input can
delay the GLS operation until a monitored
parameter meets user-defined conditions.
These devices connect to the 6-pin Flow Meter
Connector located on the back of the GLS
controller. Compatible Isco devices include:
• Pacing and Inhibiting devices:
· 4100 Series Flow Loggers
· 4200 Series Flow Meters
· 2100 Series Flow Meters
• Pacing devices (non-Isco device
interfaces):
· 4-20 mA Input Interface
· Pulse Duration Input Interface
• Inhibiting devices:
· Liquid Level Actuator
Note
Flow pacing input signal (pin C) requirements - a 5 to 15
volt DC pulse or isolated contact closure of at least 25
milliseconds in duration.
Summary of Contents for GLS
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