Electrical Contact Heads
Electrical contacts provide alarm or control functions, and are available on 100 and 150mm nominal dial instruments, mounted in a clear plastic window which replaces the standard one.
The set point can be adjusted to any position on the scale with a removable key. Single and dual contacts systems are available.
Electrical contact heads provide a repeatable switching point, but the absolute accuracy tolerance of the instrument is approximately doubled by the contacts.
Contact Rating
Standard contact head assemblies: 250V, switching capacity 10W,
18VA, maximum current 0.7A. For higher switching capacities,
150 mm (6”) SPG “Elite” and RPG gauges can be supplied with
integral 5A or 15A relays.
Service
Indoor use, ambient temperature -10/70ºC, free from
vibration
Application
100 and 150mm nominal dial size instruments
Electrical contacts are available on the following products:
Availability
Thermometers
Model BH2 - Heavy duty bimetallic thermometers
Model NC1 - Filled System thermometers
Model NC2 - Filled System thermometers
Model NR1 - Filled System thermometers
Model NR2 - Filled System thermometers
Pressure Gauges
Model DMC - Safety pattern pressure gauges
Model RPG - Process pessure gauges
Model SPG - Safety pattern pressure gauges
Model DMC - Safety pattern pressure gauges
Jump to:
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Contact Type
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A
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B
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C
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D
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E
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Operation
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Break on rise
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Make on rise
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2 contacts break on rise
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2 contacts make on rise
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Break on rise and make on rise
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