Danfoss AKS 4100, Technical Brochure, Page: 10 / 16

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DKRCI.PD.SC0.C3.02 / 520H5687 © Danfoss A/S (AC-MCI/MWA), 2012-05
Liquid Level Sensor, AKS 4100/4100U
Technical data Measuring system
Measuring principle 2-wire loop-powered level transmitter; Time Domain Reflectometry (TDR )
Application range Level measurement of liquid refrigerants.
Approved refrigerants:
Halogen Free / Environmently friendly
: R717 / NH
3
, R744 / CO
2
HCFC: R22
HFC: R404A, R410A, R134A
Primary measured value Time between the emitted and received signal
Secondary measured value Distance or level
Design
Options Probe types
Cable
Mechanical process connection with 5 m (197 in.) Ø2 mm (0.08 in.) stainless cable:
Mechanical thread on the mechanical process connection
AKS 4100: G1 in. pipe thread. Aluminium gasket included
AKS 4100U: ¾ in. NPT
Coaxial
Mechanical process connection with 5 m (197 in.) Ø2 mm (0.08 in.) stainless cable:
Mechanical thread on the mechanical process connection
AKS 4100: G1 in. pipe thread. Aluminium gasket included
AKS 4100U: ¾ in. NPT
Stainless steel tubes supporting the available probe length
LCD display
Max. measuring range Coaxial
AKS 4100: 500, 800, 1000, 1200, 1500, 1700 and 2200 mm
AKS 4100U: 19.2, 30, 45, 55, 65, 85 in.
Single cable Ø2 mm / 0.08 in.: 800-5000 mm (31.5-197 in.)
Dead zone This depends on the type of probe. (see pages 7 and 8)
Display and User interface
Display Integrated LCD display
128 × 64 pixels in 8-step greyscale with 4-button keypad
Interface languages English (default), German, French, Spanish
Operating conditions
Temperature:
Ambient temperature –40°C / +80°C (–40°F / +175°F)
For HMI : –20°C / +60°C (–4°F / +140°F)
Storage temperature -40…+85°C / -40…+185°F
Process connection temperature Standard
–60°C/100°C (–76°F/212°F)
Pressure:
Operating pressure
Standard:
–1 barg / 100 barg (–14.5 psig / 1450 psig)
Other conditions:
Liquid dielectric constant (εr) Cable version to be used in R717 / NH
3
, HCFC and HFC
εr, liquid > 5.6
Coaxial version is mandatory in R744 / CO
2
εr, liquid > 1.3
Vibration resistance EN 60721-3-4 (1...9 Hz: 3 mm / 10...200 Hz:1g; 10g shock half-wave sinusoidal: 11 ms)
Protection category IP 66/67 equivalent to NEMA type 4X (housing) and type 6P (probe)
Installation conditions
Dimensions and weights See page 10