Brooks GT1600, Инструкция по установке и эксплуатации

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Section 1
Optional Equipment - Alarms & Valves
GT1600 Alarm Contacts Meter Sizes 7 to 10
The Brooks reed switch alarm is a normally open, latching switch used in
conjunction with the GT1600 glass tube flow meter for signaling high and/or
low flow or a deviation from a flow setting.
A magnet embedded and sealed in the float actuates the alarm switch. The
reed switch is mounted adjacent to the flow tube and is easily adjustable over
the entire flow range of the instrument.
The sealed reed switch consists of a biasing magnet and hermetically sealed
reed switch, which is insulated to prevent damage from mild shock and
normal pipe vibration. The contact rating of the switch is very low (0.5A).
An external relay is recommended for secure operation. Plus the external
relay can be configured to operate as a normally open or normally closed
state which provides totally flexibilty of operation.
Alarm Specifications:
Operating Fluid Temperature Limits
Reed Switch: Same as meter
Inductive: 185°F (85°C) max.
Reed Switch Limits - Non-hazardous Locations
Maximum Voltage*: 175Vdc, 124Vac
Maximum Current*: 250mA
Maximum Contact Rating: 3 Watts
*(Maximum Switch Specifications)
Alarm Hysteresis
8 mm typical (0.32 in)
10 11