20ALM input loop powered trip amplifier, deriving power from input sig

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20ALM input loop powered trip amplifier, deriving power from input sig

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Loop Powered Trip Amplifiers
20ALM input loop powered trip amplifier, deriving power from input signal High alarm option voltage drop Setpoints available front panel signal 20mA) indication alarm Unique cost solution
20ALM
Options ordering codes
20ALM
Options 115Vac rated contacts 24Vac/dc rated contacts
115VAC
AXXX
115VAC
Description
20ALM 4-20mA loop powered trip amplifier. device derives power from input signal therefore requires external power supply. output 20ALM single pole, normally open, solid state relay which configured close either above below adjustable setpoint. switched output connected potential within transmitter supply, while transients 2.5kV withstood. relay designed switch trip amplifier typically used activate warning control system override when sensor output goes above below pre-set limit. Alternatively, unit used simple on/off control, having built switching hysteresis. device housed ultra-compact DIN-Rail mounted enclosure, only 18mm wide.
Recommended operating conditions Input current 4-20mA Relay contact voltage 24Vac/dc 110Vac Relay current (max) 300mA 24Vdc 130mA 110Vac Output resistance (on) type 110Vac type Environmental conditions Storage temperature Operating ambient Relative humidity
4-20mA 3.4V N.O. N.C. solid state relay output
-40-70°C 0-55°C 0-90%
Dimensions
63mm
Specifications
58mm
18mm
Parameter Supply voltage Supply current Full scale volt drop Relay type current Relay type current Output resistance `ON' Setpoint hysteresis Trip point accuracy Temperature coefficient Trip point drift Relay time response Operating ambient Relative humidity Isolation voltage Surge voltage Notes
Loop power 3.4V
20mA 3.5V 315mA 130mA 5/24 ±0.25%
Comments
Connection details Relay output Relay output Input channel Input channel
50µA ±100ppm/°C ±100ppm/°C 10ms 55°C
20mA input Rated 24Vdc/ac Rated 110Vac 24V/110Vac relay type Other values available
2.5kV 50µS Transient 10kV/µS Setpoint adjusted turn potentiometers front panel. Setpoint checked measuring 20mA) voltage front panel terminals. High alarm selectable using internal link. Closed output contact indicated front panel.

20ALM input loop powered trip amplifier, deriving power from input sig

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