Endress+Hauser Liquiline CM44P - Digital Outputs, Passive; Current Outputs, Active

Liquiline CM44P Technical data
Endress+Hauser 189
Signal on alarm Adjustable, as per NAMUR Recommendation NE 43
• In measuring range 0 to 20 mA (HART is not available with this measuring range):
Failure current from 0 to 23 mA
• In measuring range 4 to 20 mA:
Failure current from 2.4 to 23 mA
• Factory setting for failure current for both measuring ranges:
21.5 mA
Load Max. 500 Ω
Linearization/transmission
behavior
Linear
16.5 Digital outputs, passive
Electrical specification • Passive
• Open collector, max. 30 V, 15 mA
• Maximum voltage drop 3 V
External power supply When using an onsite auxiliary voltage supply and an onsite digital input:
Recommended minimum auxiliary voltage = 3 V + V
IHmin
(V
IHmin
= minimum input voltage required (high-level input voltage)
PFM function Minimum pulse width: 500 µs (1 kHz)
Auxiliary voltage Electrical specification
• Galvanically isolated
• Unregulated, 24 V DC
• Max. 50 mA (per DIO module)
Test voltage 500 V
Cable specification Max. 2.5 mm
2
(14 AWG)
16.6 Current outputs, active
Span 0 to 23 mA
2.4 to 23 mA for HART communication
Signal characteristic Linear
Electrical specification Output voltage
Max. 24 V
Test voltage
500 V