Danfoss AKS 4100, Technical Brochure, Page: 11 / 16

© Danfoss A/S (AC-MCI/MWA), 2012-05 DKRCI.PD.SC0.C3.02 / 520H5687 11
Liquid Level Sensor, AKS 4100/4100U
Technical data
(continued)
Material
Housing Aluminium
Coaxial (segmented) Standard: Stainless steel (1.4404 / 316L)
Single cable Standard: Stainless steel (1.4401 / 316)
Process fitting Standard: Stainless steel (1.4404 / 316L)
Gaskets EPDM (-50...+150°C / -58...+300°F)
Cable gland Plastic (black)
Process connections
Thread:
Single cable Ø2 mm / 0.08¨ AKS 4100: G1 inch pipe thread. Aluminium gasket included
AKS 4100U: ¾ in. NPT
Coaxial AKS 4100: G1 inch pipe thread. Aluminium gasket included
AKS 4100U: ¾ in. NPT
Electrical connections
Power supply Terminals output:
14-30 V d.c. Min./Max. Value for an output of 22 mA at the terminal.
Ambient temperature limitations:
-40°C/+80°C(–40°F / +176°F) : 16-30 V d.c.
-20°C/+80°C(–4°F / +176°F) : 14-30 V d.c.
Current output load RL [Ω] ≤ ((Uext -14 V)/20 mA).
– Default (Error output set to 3.6 mA)
RL [Ω] ≤ ((Uext -14 V)/22 mA).
– (Error output set to 22 mA)
Cable gland AKS 4100: PG 13, M20×1.5 ; (cable diameter: 6-8 mm (0.24-0.31in.)
AKS 4100U: ½ in. NPT
Cable entry capacity (terminal) 0.5-1.5 mm
2
(~20-15 AWG)
Input and output
Current output:
Output signal 4…20 mA or 3.8…20.5 mA acc. to NAMUR NE 43
Resolution ±3 μA
Temperature drift Typically 75 ppm/K
Error signal High: 22 mA; Low: 3.6 mA acc. to NAMUR NE 43; Hold (frozen value - not available
with NAMURNE 43 compliant output.
Approvals and certification
CE This device fufills the statutory requirements of the EMC directives. The manufacturer
certifies successful testing of the product by applying the CE mark.
Other standards and approvals:
EMC EMC Directives 2004 / 108 / EC and 93 / 68 / EEC in conjunction with
EN 61326-1 (2006) and EN 61326-2-3 (2006). The device conforms to these standards if :
- the device has a coaxial probe or
- the device has a single probe that is installed in a metallic tank.
LVD Low-Voltage Directives 2006 / 95 / EC and 93 / 68 / EEC in conjunction with
EN 61010-1 (2001)
NAMUR NAMUR NE 21 Electromagnetic Compatibility (EMC) of Industrial Process and
Laboratory Control Equipment
NAMUR NE 43 Standardization of the Signal Level for the Failure Information of
Digital Transmitters
Minimum power supply voltage
Use this graph to find the minimum power supply voltage for a given current output load:
Minimum power supply voltage for an output of 22mA at the terminal
Power supply U [VDC]
Current output load
R
L
[
Ω
]