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Danfoss AKS 4100 Technical Brochure Download Page 7

© Danfoss A/S (AC-MCI/MWA), 2012-05 

DKRCI.PD.SC0.C3.02 / 520H5687 7

Liquid Level Sensor, AKS 4100/4100U

Measuring range of AKS 4100/4100U - COAXIAL version

Top 

dead 

zone

120 mm

(4.7 in.)

Measuring range

Bottom 

dead 

zone

(see tables) 

Min: 30 mm (1.2 in.)

Ø2 mm (0.08 in.) 

stainless wire

Pr

obe length*

4 mA (0 %)*

Inner length of the stand pipe

Danfoss

M84H0026_1

20 mA 

(100 %)*

Standpip

e

diameter: 2-4 in.

Reference point

Distanc

e

Surface level

Please note: It is mandatory to input dielectric constant for CO

2

 applications.

*  Values to be entered into HMI Quick Setup menu

  and recorded on the setting label.

  Stick the setting label onto the Signal Converter either 

  inside or outside.

AKS 4100

Dielectric Constant εr always set during Quick Setup

Refrigerant

Probe 

Length

Bottom 

Dead 

Zone  

Bottom 

Dead 

Zone  

[mm]

[in.]

[mm]

[in.]

CO

2

500

19.7

170

6.7

800

31.5

1000

39.4

1200

47.2

1500

59.1

1700

66.9

2200

86.6

Factory setting

Refrigerant

Probe 

Length

Bottom 

Dead 

Zone  

Bottom 

Dead 

Zone  

[mm]

[in.]

[mm]

[in.]

Ammonia

500

19.7

95

3.7

800

31.5

104

4.1

1000

39.4

110

4.3

1200

47.2

116

4.6

1500

59.1

125

4.9

1700

66.9

131

5.2

2200

86.6

146

5.8

Improved Bottom dead zone values

after the adjustment of dielectric constant

Refrigerant

Probe 

Length

Bottom 

Dead 

Zone  

Bottom 

Dead 

Zone  

[mm]

[in.]

[mm]

[in.]

Ammonia 

500

19.7

80

3.2

800

31.5

1000

39.4

1200

47.2

1500

59.1

1700

66.9

2200

86.6

Factory setting

Refrigerant

Probe 

Length

Bottom 

Dead 

Zone  

Bottom 

Dead 

Zone  

[mm]

[in.]

[mm]

[in.]

HCFC,HFC

500

19.7

115

4.5

800

31.5

124

4.9

1000

39.4

130

5.1

1200

47.2

136

5.4

1500

59.1

145

5.7

1700

66.9

151

5.9

2200

86.6

166

6.5

Improved Bottom dead zone values

after the adjustment of dielectric constant

Refrigerant

Probe 

Length

Bottom 

Dead 

Zone  

Bottom 

Dead 

Zone  

[mm]

[in.]

[mm]

[in.]

HCFC,HFC

500

19.7

100

3.9

800

31.5

1000

39.4

1200

47.2

1500

59.1

1700

66.9

2200

86.6

AKS 4100U

Dielectric Constant εr always set during Quick Setup

Refrigerant

Probe 

Length

Bottom 

Dead 

Zone  

Bottom 

Dead 

Zone  

[in.]

[in.]

[mm]

CO

2

19.2

6.7

170

30
45
55
65
85

Factory setting

Refrigerant

Probe 

Length

Bottom 

Dead 

Zone  

Bottom 

Dead 

Zone  

[in.]

[in.]

[mm]

Ammonia

19.2

3.73

95

30

4.05

103

45

4.50

114

55

4.80

122

65

5.10

130

85

5.70

145

Improved Bottom dead zone values

after the adjustment of dielectric constant

Refrigerant

Probe 

Length

Bottom 

Dead 

Zone  

Bottom 

Dead 

Zone  

[in.]

[in.]

[mm]

Ammonia 

19.2

3.1

80

30
45
55
65
85

Factory setting

Refrigerant

Probe 

Length

Bottom 

Dead 

Zone  

Bottom 

Dead 

Zone  

[in.]

[in.]

[mm]

HCFC,HFC

19.2

4.52

115

30

4.84

123

45

5.29

134

55

5.59

142

65

5.89

150

85

6.49

165

Improved Bottom dead zone values

after the adjustment of dielectric constant

Refrigerant

Probe 

Length

Bottom 

Dead 

Zone  

Bottom 

Dead 

Zone  

[in.]

[in.]

[mm]

HCFC,HFC

19.2

3.94

100

30
45
55
65
85

Summary of Contents for AKS 4100

Page 1: ...cations Dust foam vapour agitated surfaces boiling surfaces changes in density or in the dielectric constant εr for the liquid have no influence on the AKS 4100 4100U performance Oil accumulated in the bottom of a standpipe will not disturb the liquid level signal and it is not necessary to remove AKS 4100 4100U for cleaning after oil has been drained out of the standpipe AKS 4100 4100U Coaxial Ve...

Page 2: ...cal data 5 Measuring range of AKS 4100 4100U CABLE version 6 Measuring range of AKS 4100 4100U COAXIAL version 7 Ordering AKS 4100 4100U 8 Dimensions and weights 9 Technical data 10 Quick setup CABLE version 12 COAXIAL version 13 Forcing mA output 14 Entering refrigerant dielectric gas constant 14 Saturated vapour dielectric constant 15 How to change the language setting Default English 16 Reset t...

Page 3: ...tion prior to mounting signal converter Setting label With the cable version it is possible to adapt the AKS 4100 4100U to any possible length in the range of 800 mm 31 5 in to 5000 mm 196 9 in Danfoss M84H0001_1 Danfoss M84H0021_1 CABLE version COAXIAL version AKS 4100 4100U is available in two different versions Cable version Coaxial version Cable version Both Cable and Coaxial versions are avai...

Page 4: ...e device unable to provide a correct measurement communication memory problem 2 No Reference Pulse 3 Low Voltage or Measurement Old 4 Level Lost Keypad buttons Flashing star indicating unit in operation Enter menu system Enter QUICK SETUP Unit change at distance level readout m cm mm in ft Change between Distance Level Output Output mA AKS 4100 The optional HMI Service Display unit is used for com...

Page 5: ...rature supply voltage 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 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 in NPT Refrigerant temperature 60 C 100 C 76 F 212 F Ambient temperature 40 C 80 C 40 F 176 F For HMI 20 C 60 C 4 ...

Page 6: ...ace level Values to be entered into HMI Quick Setup menu and recorded on the setting label Stick the setting label onto the Signal Converter either inside or outside Bottom deadzone values based on the factory setting of dielectric constant Refrigerant Probe length range Bottom dead zone mm in mm in Ammonia HFC HCFC 800 31 5 115 4 2 801 999 31 5 39 120 4 7 1000 1999 39 79 150 5 9 2000 2999 79 118 ...

Page 7: ...one mm in mm in Ammonia 500 19 7 80 3 2 800 31 5 1000 39 4 1200 47 2 1500 59 1 1700 66 9 2200 86 6 Factory setting Refrigerant Probe Length Bottom Dead Zone Bottom Dead Zone mm in mm in HCFC HFC 500 19 7 115 4 5 800 31 5 124 4 9 1000 39 4 130 5 1 1200 47 2 136 5 4 1500 59 1 145 5 7 1700 66 9 151 5 9 2200 86 6 166 6 5 Improved Bottom dead zone values after the adjustment of dielectric constant Refr...

Page 8: ...al Converter without HMI excluding cable gland 084H4541 Service kits Description Content Code number Cable and counterweight for AKS 4100 4100U CABLE version Cable 5 m 197 in Ø2 mm Ø0 08 in 084H4542 Crimp Counterweight End connector incl screws for AKS 4100 4100U COAXIAL version End connector incl 3 mm 0 12 in set screws 084H4549 Process connection counterweight and 5 m 197 in Ø2 mm Ø0 08 in cable...

Page 9: ...and weights CABLE version Probe length Ø104 mm Ø4 1 in 141 3 mm 5 6 in 34 2 mm 1 4 in Ø2 mm Ø0 08 in Ø22 mm Ø0 9 in Ø92 mm Ø3 6 in 33 mm 1 3 in COAXIAL version Ø104 mm Ø4 1 in 141 3 mm 5 6 in 34 2 mm 1 4 in Lunghezza sonda Ø14 mm Ø0 6 in Ø21 mm Ø0 8 in Weight approx 2 0 kg 4 4 lbs Weight approx 3 5 kg 7 7 lbs ...

Page 10: ...ainless 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 k...

Page 11: ...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 te...

Page 12: ...se the value or to increase the value Press to confirm Press to change of SCALE 20 mA Press to change the cursor position Press to decrease the value or to increase the value Press to confirm Wait for QUICK SETUP to complete 8 second timeout AKS 4100 QUICK SETUP COMPLETED IN 8 AKS 4100 1 0 0 QUICK START AKS 4100 1 0 0 STORE NO AKS 4100 DISTANCE 5000 mm Press to confirm Press or to select either ST...

Page 13: ... below are only examples Connect the device to the power supply Press 3 times Press Press or to select between SINGLE or COAXIAL Choose COAXIAL and press to confirm Press NO to confirm AKS 4100 QUICK SETUP YES NO AKS 4100 PROBE TYPE SINGLE CABLE Press to change the PROBE LENGTH Press to change the position of the cursor Press to decrease the value or to increase the value Press to confirm Press to...

Page 14: ...dielectric constant of refrigerant gas completed Entering refrigerant dielectric gas constant all values below are only examples Optional Procedure If the temperature condition in the stand pipe is known a constant dielectric constant of the refrigerant gas can be entered parameter 2 5 3 GAS EPS R in order to obtain lower Top and Bottom Dead Zone values see pages 7 and 8 Default screen Press Press...

Page 15: ... 21 60 70 1 06 22 26 71 79 1 07 27 31 80 88 1 08 32 35 89 95 1 09 36 39 96 102 1 10 40 42 103 108 1 11 43 45 109 113 1 12 46 48 114 118 1 13 R22 Temperature range 50 C 48 C 58 F 118 F Temperature C Temperature F Dielectric constant of refrigerant gas Parameter 2 5 3 GAS EPS R 40 0 18 40 0 1 01 17 4 1 25 1 02 3 5 26 41 1 03 6 13 42 56 1 04 14 20 57 68 1 05 21 25 69 77 1 06 26 30 78 86 1 07 31 34 87...

Page 16: ...reen appears Language setup completed How to change the language setting Default English AKS 4100 QUICK SETUP YES NO Default screen Press once and twice Press AKS 4100 DISTANCE 5000 mm AKS 4100 DISTANCE 5000 mm Enter password Press twice Press Press Select YES by pressing and confirm with Press 3 times to return to default screen Default screen appears Factory reset completed Reset to factory sett...

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