Monitoring cameras

Laboratory cabinets

Dome type monitoring cameras

Inner-city monitoring cameras

Disaster prevention monitoring
camerasCabinets for storing medicine
and optical parts

Optical application equipment

Telecommunications

OA equipment

Analyzers

The protective apparatus against dew condensation

Electrolysis type
Dehumidifying element / Dehumidifier

ROSAHL

Laser processing machines

Mobile phone shelters

Road facilities

ETCS control panels

Automatic speed indicators

High quality image printers

Infrared spectrographs (FT-IR)

Electric facilities

Production facilities

Monitoring control panels

NC control panels

Intellectual property rightThe basic patent of dehumidifier using this system is reserved by Mitsubishi Electric Corp.
Our company acquires its patent license, and is also applying for the relevant patents in cooperation with Mitsubishi Electric Corp.

CAUTION・Prior to use, carefully read the instruction manual attached to the product.
・The specifications described in this brochure, such as the rating, dimensions and appearance, may
be subject to changes without prior notice; it is, therefore, necessary to purchase our product after it
has been checked satisfactorily at your end.

A new standard for a new era

RYOSAI TECHNICA CO., LTD.
1-1 Tsukaguchi-Honmachi 8 Chome, Amagasaki-City, Hyogo Prefecture, Japan
TEL : 81-6-6497-9078
FAX : 81-6-6497-9082
E-mail:rosahl@ryosai.co.jp
URL http://www.ryosai.co.jp

This leaflet shows the product specifications and dimensions as of Aug., 2014. It is subject to change without prior notice.

Prepared in Sep., 2014 IP1000 RY0020F

EnergySavingNo droplet

NoiselessCompletely
new approach todehumidification
Features

World's first electrolytic method

This product uses a solid polymer electrolyte membrane, a completely different principle fromconventional dehumidification methods.
It directly electrolyzes and removes moisture from the air, and provides many advantages(see below).
(The name "ROSAHL" comes from a pun on a Japanese phrase meaning "removing dew".)

Exc
ell

1. Energy saving

container using a solid polymer electrolyte membrane.

● When a direct current is applied to the porous electrode attached to the special solid

polymer electrolyte membrane, moisture at the anode side (dehumidifying side) is+
separated into hydrogen ions (H ) and oxygen. The hydrogen ions pass through the solid
polymer electrolyte membrane to the cathode side (moisture discharging side).
● The hydrogen ions react with oxygen in the air on the cathode side to form watermolecules (gas) and are then discharged.

entpm

ergy-Saving E
qu
t En
i
en

Principle● This new type of dehumidifier electrolytically decomposes and removes moisture in a

Proudly Winning
the Chairman’s Prize of
The Japan Machinery
Federation

2. No droplet

ROSAHLPrinciple ofdehumidification

O

O

2

H

H

H

(Water molecule)O2(Oxygen molecule)

O
H 2O

O

O

O2

(Oxygen molecule)

H
H(Water molecule)

+

H

+

+

H

+

O

H 2O

(Water molecule)

O

O
O2

(Oxygen molecule)

H

+

H

+

H

+

H

+

H
H

（＋）

（−）

(Electron)(Electron)

e-

H
H

Porous electrode

6. Works also as a humidifier

H

Solid polymer electrolyte membrane

H 2O

O

4. Noiseless

5. Compact and lightweight

Moisture discharging side

Porous electrode3. Capable of dehumidifying
even below 0°C or less

Dehumidifying side

e-

O

H 2O

(Water molecule)

O O
O2(Oxygen molecule)

H2O
2H+＋ 12 O2＋2eH2O
Cathode (Moisture discharging side) 2H+＋ 12 O2＋2e-

Reaction Anode (Dehumidifying side)3

LINE-UPROSAHL
ELECTROLYTIC DEHUMIDIFIER

Product Lineup

Small Dehumidifying Element

Small Dehumidifying Element

Thin Dehumidifying Element

Installation is simple in small size !

Compact body as small as your thumb!

Only 2.3 mm thick!

PD3

RD3

MDL-5

Specifications
Figure 1
External dimensions

Specifications

XXX
12
0.
7

●

8㎜
12

4-φ 2.4 through hole
φ4 counterbore,
depth 1.5

4.0

10
16

RD3

RD4

Moisture discharging side

Dehumidifying side

Dehumidifying side

Moisture discharging side

12
RD3/RD4 include packings.

Figure 2
Example installation of
insertion type terminal

Terminals
GrommetElectrode

Electrode（0.7）
PD2: Soldered type

Model name
15°

1.1

Dehumidifying capacity(mg/day) ＊１(cc)

Power consumption(mW)

Weight(g)

Element terminal voltage

PD3: Insertion type

Model nameApplicable volume

Element terminal voltage
Power consumption
Dimensions
Weight(mg/day) ＊１
(cc)

84

Up to 2000
3 VDC

(mW)

＊3

(mm)

＊4

φ17×11＊5

M12 screw (P0.5)(g)

Dimensions of installation hole (mm)Operating temperature

＊2

(V)

PD2／PD3(°C)

Element connecting terminal type

80

0.9

−10 to 50

PD2:Soldered type. PD3:Insertion type＊6

Read the precautions for use on page 14.

4

Operating temperature

Element connecting terminal type

＊2

(V)

RD3／RD4 ＊6
84

Up to 2000
3 VDC

＊3

(mm)

Dimensions of moisture discharging hole (mm)Notes ＊1 The initial value at the temperature of 30°C and humidity of 60%.
(The dehumidifying capacity will degrade during use. How much it degrades depends on
the operating environment and conditions. If any signs of abnormality are seen, early
replacement is recommended.)＊2 The applicable volume is for a sealed, moisture-impermeable container, and may varydepending on the material of the container, state of sealing and required humidity.
＊3 The annual average power consumption in average conditions in Japan.
＊4 See Figure 1.
＊5 See installation instructions on page 10.
＊6 For an insertion type terminal for PD3, use a STO-01T-110N (JST) flat connecting
terminal or equivalent.
The insertion type terminals may touch each other, as the element bodies are small.
See Figure 2 for installation.

W

The polarity is indicated with +/-.

Applicable volume

Dimensions (height x width x depth)

Dehumidifying capacity

D

30

5.5

（8.5）

1.5

Lot no.

φ1.1（−）
electrode

5

2.8

H

M12 screw (P0.5)

Indication of polarity

2.8

（＋）
electrode

45°

（7）

φ6

φ10

PDX

φ17

Moisture discharging side

（9.5）

24
18

12

Dehumidifying side

Model name

41,
凹

18.8

Packing (t 0.5)

(Unit : mm)

80

24 x 30 x 5.5
1.9

＊4

(°C)

12.5 x 12.5
−10 to 50＊5Soldered type or Insertion type

Notes ＊1 The initial value at the temperature of 30°C and humidity of 60%.
(The dehumidifying capacity will degrade during use. How much it degrades depends
on the operating environment and conditions. If any signs of abnormality are seen,
early replacement is recommended.)＊2 The applicable volume is for a sealed, moisture-impermeable container, and may varydepending on the material of the container, state of sealing and required humidity.
＊3 The annual average power consumption in average conditions in Japan.
＊4 See installation instructions on page 10.
＊5 For an insertion type terminal, use a STO-01T-110N (JST) flat connecting terminalor equivalent.
＊6 When dehumidifying the inside of a container, attach RD3 from the outside or RD4
from the inside.

Read the precautions for use on page 14.

The polarity is indicated with +/-.

Model name
Dehumidifying capacity
Applicable volume

Element terminal voltage

(m3)

MDL-5

4

8

(W)

Weight(g)

Up to 1Up to 2

＊3

2

3

4

Approx. 25

Approx. 50

3 VDC

88 x 63 x 2.3 88 x 88 x 2.3 108 x 108 x 2.3
Approx. 20
55 x 30＊4(°C)

Element connecting terminal type

16

Up to 0.5

Dimensions (height x width x depth) (mm)Dimensions of moisture discharging hole (mm)

MDL-7

＊2

(V)

Power consumption

Operating temperature

MDL-3(g/day) ＊１

55 x 55−10 to 50

75 x 75(+) side: STO-41T-110N (JST) or equivalent(-) side: STO-41T-110N-8 (JST) or equivalent

Notes ＊1 The initial value at the temperature of 30°C and humidity of 60%.

(The dehumidifying capacity will degrade during use. How much it degrades depends
on the operating environment and conditions. If any signs of abnormality are seen,
early replacement is recommended.)＊2 The applicable volume is for a sealed, moisture-impermeable container, and may varydepending on the material of the container, state of sealing and required humidity.
＊3 The annual average power consumption in average conditions in Japan.
＊4 See installation instructions on page 11.

Read the precautions for use on page 14.

5

LINE-UPROSAHL
ELECTROLYTIC DEHUMIDIFIER

Product Lineup

Molded Type Dehumidifier

Separate Type Dehumidifier

Humidity Controller Embedded Dehumidifier

Can be used for 100 or 200 VAC!

Lightweight body!

General Dehumidifier

Energy saving by setting your desired humidity!

Power supply unit

RDHC-5P1
RDHC-7P1

RDH-3P1（for AC100V）

Humidity controller unit

RDHC-7J1

RDH-7J1

Element unit

Specifications

Specifications■The element unit and power supply unit are supplied in a set.

RDHB-5J1

Element unit

Power supply unit

Nameplate

RDHB-7J1

D-3006JW

S-7J1

A

A

C

RDHB-10J1
S-10J1

NameplateD-3010JW

NameplateC

B

B

Nameplate

S-5J1

C

B

● Set model no.

C

A

B

A

Use the model number below to order.

C

A

50

40

80

％ＲＨ

Nameplate
30

50

20

40

60

B

60
70

30

70
80

20

%RH

RDH-3P1

RDHC-5P1
RDHC-7P1

RDH-3P1

RDHC-5P1

RDHC-7P1

Dehumidifying capacity (g/day) ＊1

2.9

8

16

Up to 0.35

Up to 1Up to 2

Applicable volume (m3)＊2

Up to 1Up to 2Up to 45

Power consumption (W)

＊3

3

4

8

138 x 150 x 30

168 x 185 x 30

20 to 80

Weight0.25(kg)

Operating temperature (°C)

0.65

0.85

ー10 to 50* The RDH-3P1 shown in the picture is for 100 VAC.
Standard units for 200 VAC are equipped with a crimping terminal (R1.25-4) for end
treatment of the power cable.
Specify 100 VAC or 200 VAC when ordering.
Notes＊1 The initial value at the temperature of 30°C and humidity of 60%.

0.4

● Power supply unit

Model name

D-3006JW

D-3010JW

Applicable device unit

S-5J1、S-7J1

S-10J1

Rated voltage(V)

Rated power consumption (VA) ＊6

Dimensions
Weight(mm)＊4 182 x 100 x 41

225 x 100 x 41

(kg)

Operating temperature (°C)

0.7

−10 to 50

Model nameDimensions
Weight(mm)＊4(kg)

Humidity set range (%RH)
Operating temperature (°C)

(W)
(V)

(mm) ＊4(%RH)

Power consumption

0.9Dielectric strength
Dimensions
C

WeightA＊3(mm) ＊4

Operating temperature (°C)
Nameplate

＊2

(V)
(kg)

RDHC-10J1

RDHC-10J2

Up to 1Up to 2Up to 4Up to 8

58

29

16

100/110 AC

100/110 AC

100/110 AC

100/110 AC2000 AC (per minute)2000 AC (per minute)2000 AC (per minute)2000 AC (per minute)20 to 80

20 to 80

20 to 80

20 to 804115 x 170 x 65

105

175 x 245 x 70

145 x 200 x 65

195 x 370 x 70

ー10 to 50

ー10 to 50

ー10 to 50

20

2.1

1.4

1.1

ー10 to 50(V)(W)

RDHC-7J18

0.9

Model name(m3)

RDHC-5J1＊3

Operating temperature (°C)

Rated voltage

78 x 112 x 50

−10 to 50(V)

Dehumidifying capacity (g/day)＊1

C-M1J

0.2

＊2

(kg)

Applicable volume

2000 AC (per minute)20 to 80

Weight(m3)● General type2000 AC (per minute)● Humidity controller unit (optional)

Dielectric strength (V)C

Nameplate40

24

3 DC (10A)

Dielectric strength (V)Humidity set rangeA

85 to 264 AC

3 DC (6A)

Rated output voltage (V) ＊7

Dimensions

0.7

The element unit only can also be purchased.

Risk of Electric Shock CNT(The dehumidifying capacity will degrade during use. How much it degrades
depends on the operating environment and conditions. If any signs of abnormality
are seen, early replacement is recommended.)＊2 The applicable volume is for a sealed, moisture-impermeable container, and mayvary depending on the material of the container, state of sealing and required
humidity.
＊3 The annual average power consumption in average conditions in Japan.
＊4 The dimensions of A x B x C in the figure.
(The height of the knob on the RDHC type or humidity controller unit is 15 mm.)
＊5 RDH-3P1 does not include a humidity controller.
＊6 The power consumption when the rated load is applied.
(See the power supply unit.)＊7 The value in ( ) is the rated output current.(See the power supply unit.)

0.5

ー10 to 50

B

ー

(kg)

Operating temperature (°C)

Dielectric strength

B

Humidity set range (%RH) ＊5

Weight111 x 130 x 30

Rated voltage

Power consumption

30

144 x 231 x 69(mm) ＊4(mm) ＊4

3 VDC

Dehumidifying capacity (g/day)＊1
Applicable volume

20

72 x 169 x 34

Dimensions

Dimensions

Model name

29

％ＲＨ

4
2000 AC (per minute)Dielectric strength (V)Element terminal voltage (V)

16

80

3

100 VAC8● Humidity controller embedded typeS-10J140

Power consumption (W)

＊3

S-7J1

50

100/200 VAC(V)

Dehumidifying capacity (g/day) ＊1

S-5J1

70

Rated voltage＊2

Model name60

Applicable volume (m3)6

● Element unit

Model name

RDH-3J1

RDH-5J1

RDH-7J1

RDH-10J1

RDH-10J2

Up to 0.5

Up to 1Up to 2Up to 4Up to 8

4

8

16

29

58

100/110 AC

100/110 AC

100/110 AC

100/110 AC

100/110 AC2000 AC (per minute)2000 AC (per minute)2000 AC (per minute)2000 AC (per minute)2000 AC (per minute)

0.5

0.8

1.0

1.3

3

81.5 x 193 x 35
ー10 to 50

4115 x 170 x 45
ー10 to 50

5145 x 200 x 45
ー10 to 50

10175 x 245 x 55
ー10 to 50

20

195 x 370 x 55
2.0

ー10 to 50

Notes＊1 The initial value at the temperature of 30°C and humidity of 60%.
(The dehumidifying capacity will degrade during use. How much it degrades depends on the operating environment and conditions. If any signs of abnormality are seen,
early replacement is recommended.)＊2 The applicable volume is for a sealed, moisture-impermeable container, and may vary depending on the material of the container, state of sealing and required humidity.
＊3 The annual average power consumption in average conditions in Japan.
＊4 The dimensions of A x B x C in the figure.
(The height of the knob on the RDHC type is 15 mm.)7

ROSAHL
ELECTROLYTIC DEHUMIDIFIER

Model Selection
Guide

To select a model, use the applicable volume and required humidity graphs below as a guide.

Test data

Reference: 1) The graph shows the relationship at an outside air humidity of 90%.
2) A sealed moisture-impermeable container is used.

RD H- 5 J1
RDHB -5J1
R D H C -5 J 1
R D H C -5P1
MD L- 560
50

R D H- 7J1
R D H B - 7J1
R D H C - 7J1
R D H C -7P1
MDL- 74030

R D H- 10J1
R D H B - 10J1
R D H C - 10J1

20
10R D H- 10J2
R D H C - 10J2
0.00050.001

0.002 0.05

0.1

0.2

0.3

0.5

1

2

3

5

10

Applicable volume (m3)

MDL-7
MDL-5
MDL-3

0

1

2

3

4

5

Time (h)

6

7

8

9

Humidity (%)

Humidity (%)

100
90
80
70
60
50
40
30
20
10
0

Dehumidification characteristics (container: 50 L)(30℃ 90%RH)

10

3

4

5

Time (h)

6

7

8

9

10

・Characteristics of the graphs may vary depending on the material of thecontainer and the degree of airtightness.
・If the container contains moist material such as resin, dehumidifying the inside of
the container induces release of moisture from the material, which will result inslow dehumidification of the inside of the container.
・The dehumidifying capacity of the element varies according to the absolute wateramount inside the container.

Humidity (%)

2000cc
1000cc
500cc

0

2

4

6

8

10

Time (h)

12

14

16

18

20

Humidity inside the panel

30

Outside air temperature

10

Current

40
20
0
0

50

100

150

Time (hr)

8/3

8/5

8/7

8/9

8/11

10
8
6
4
2

200

250

0

300

Container 2.7 m , Humidity setting: 43%3◆Dehumidification results at low temperature andhigh humidity in winter

40
30
20

100
90
80
70
60
50
40
30
20
10
0
1/8

Outside air humidity
Humidity inside the panel
Outside air temperature
1/10

1/12

1/14

1/16

1/18

10
0
-10

Date (day)Rainproof cover: This product prevents rain drops and insects from entering the moisture discharging hole when thedehumidifier is used in an outdoor panel.
Adapter set: This product provides round moisture discharging holes and prevents rain drops or insects from entering theholes when a dehumidifier is used in an already installed outdoor panel. A special vent cover is included.
Options

Rainproof coverModel name

RDH-5J1、RDHC-5J1、RDHB-5J1、MDL-3、MDL-5

For RDH-5J1

RDH-7J1、RDHC-7J1、RDHC-5P1、RDHC-7P1、RDHB-7J1、MDL-7

For RDH-7J1

For RDH-10J1

RDH-10J1、RDHC-10J1、RDHB-10J1

For RDH-5J1

RDH-5J1、RDHC-5J1

RDH-10J2、RDHC-10J2

For RDH-10J2
Adapter set

RDH-7J1、RDHC-7J1

For RDH-7J1

RDH-10J1、RDHC-10J1

For RDH-10J1

RDH-10J2、RDHC-10J2

For RDH-10J2
Rainproof cover parts

Compatible model

RDH-3J1、RDH-3P1

For RDH-3J1

Installed rainproof cover

ROSAHLmain bodySurface ofpanel
Rainproof
cover
Moisturedischarging hole

Perforated
metal

8

12

Date (day)◆Small dehumidifying element (PD2, PD3, RD3, RD4)
100
90
80
70
60
50
40
30
20
10
0

50

Outside air temperature

Product name

Dehumidification characteristics (35℃ 85%RH)

14

60

Humidity inside the panel

Optional
Parts
2

16

70

Outside air humidity

100 L
50 L
25 L
12.5 L1

18

80■Field test data

Humidity (%)
100
90
80
70
60
50
40
30
20
10
0
0

Dehumidification characteristics (MDL-5)(30℃ 90%RH)

20

Outside air humidity

90◆Dehumidification results at high temperature andhigh humidity in summer
100
90
80
70
60
50
40
30
20
10
0
8/1

◆Thin dehumidifying element (MDL-3, MDL-5, MDL-7)

100

Temperature (°C)

3J1
3Current (A)3P1

RDHMDL-

Humidity (%)

70

RDH-

Temperature (°C) / Humidity (%)

Required humidity (%)

80

0.0003■Test data of humidity controller embedded type (RDHC-10J1)

PD2,PD3,
RD3,RD4

90

Temperature (°C)

100

Adapter set parts

Installed adapter set
ROSAHLmain body

Adapter

Surface of
panel
Vent cover
Perforated
metal
Vent cover
Vent hole
Perforated
metal

9

ROSAHL
ELECTROLYTIC DEHUMIDIFIER

How to installdehumidifying
element

Follow these instructions to ensure airtightness when installing a dehumidifying element.

How to install small dehumidifying element

How to install thin dehumidifying element「PD2、PD3」「MDL-3、MDL-5、MDL-7」

Make a screw hole for an M12 (P0.5) mm screw on the container on which
you will install the dehumidifying element. Insert a packing into the hole andslowly screw in the screw.
(Specified torque:0.25 to 0.39 N.m)
The packing is not included.

Screw fixation
Dehumidifying element (PD)Installation dimensions(Unit:mm)

Packing

M12 screw (P0.5)

・As shown in the right figure, fit packing to both sides of the dehumidifying
element, attach the retainer plate on the top and fasten at around four points
around the edge with M4 screws. If the necessary distance is not secured
between the connecting terminal of dehumidifying element and the panel
surface, attach the dehumidifying element to an element installation plate orsuch other plate and then install to the panel surface.
・The packings used should be made from PTFE (polytetrafluoroethylene)
series and have hardness of approximately 50.
・When installing in an outdoor panel, avoid interference with the attaching
screws of the rainproof cover.

Side surface of the panel orelement installation plate
Connecting terminal

M12 screw(P0.5)hole
Retainer plate

Moisturedischarging holeElement installation plate
Packing

Packing

How to install small dehumidifying element(Unit: mm)
4-M2 screw

4-M4 screw

m
f

b

k

q

g

c

Dehumidifying element (RD)Material: PTFE series
Hardness: Approximately 50
Thickness: 2 mmMaterial: SUS
Thickness: 3 mm

nOpen part

Open parthInstallation dimensions(Unit:mm)

M2 screw

r
p

j

a

d

Make a square hole 12.5 mm x 12.5 mm on the container, insert the included
packing and attach the dehumidifying element with four M2 screws.
(Specified torque : Max. 0.18 N.m)

184-φ4.5 through holeeOpen part4-M4 screw

PackingElement installation plates「RD3、RD4」

Dehumidifying element (MDL)

Figure 1: Packing

Black: Dimensions of thin element installation hole
Red: Dimensions of rainproof cover installation hole

Figure 2: Retainer plate

Figure 3: Dimensions of installation holes

10

12.5□

● Installation dimensions of thin dehumidifying element (recommended)

Model
name

Packing (Figure 1)(Unit: mm)

Main body insutallation
Rainproof coverdimensions
insutallation dimensions(Figure 3)(Figure 3)

Retainer plate (Figure 2)

a

b

c

d

e

f

g

h

j

k

m

n

p

q

r

s

MDL-3

45

70

30

55

80

75

30

55

70

40

30

55

70

40

135

125

MDL-5

70

70

55

55

105

75

55

55

95

40

55

55

95

40

135

125

MDL-7

90

90

75

75

125

95

75

75

115

60

75

75

115

60

175

150

Rainproof covermodel no.

For RDH-5J1
For RDH-7J1

For the rainproof cover and adapter set, see page 9.

10

11

ROSAHL
ELECTROLYTIC DEHUMIDIFIER

How to installdehumidifier

Install directly or using an adapter. See the figures and table below before making holes.

ROSAHL
Rainproof
cover

Inside ofpanel●Main body and rainproof cover

Outside of
panel

d

g

k

Installation
methodDirect installation
methodb

Use an optional adapter
set for installation. Thismethod is usually used
when it is not possible to
make a square moisturedischarging hole on thesurface itself, for example
when installing to an existing panel.

Outside of
panel

e

Installation
methodInside ofpanelh

ROSAHL
Adapter set

Floor

f

Make a square moisturedischarging hole on theside of the panel anddirectly install the dehumidifier. Always use an
optional rainproof coverfor outdoor panels.

(2) Molded type

Adapter installation method

Direct installation method

a
φc

Floor

Figure 1

Model name
RDH‐3P1
RDHC‐5P1
RDHC‐7P1

discharging hole
Main body installation dimensions Rainproof cover installation dimensions Moisturedimensions

a

b

c

d

e

f

g

h

k

57

73

5

85

57.5

57.5

M4 screw

35

35

120

106

6

175

67.5

82.5

M4 screw

75

75(Unit: mm)

Remarks

Figure 1* On RDHC-5P1 and 7P1, use a rainproof cover (optional) for RDH-7J1.
* On RDH-3P1, use a rainproof cover (optional) for RDH-3J1.

For the rainproof cover and adapter set, see page 9.

Panel boring dimensions(1) humidity controller embedded type and general type(3) Separate type

φg

m

b
c

b

k
h

c

h

φg

a

f
d
a

a

φg

φg

b

m

e

d

p

p
c

c

k
b
c
j

a

b

φe

M4 screw
c

f

h

q
φg

k

d

φe

m

q

φd
e

M4 screw

a
b

φd

n

a

b

4-φg

h
a

n

a

j

Figure 1

Square hole (e x f)
(Or 2-φd)●Element unit, Power supply unit, Humidity controller unit (Unit: mm)

Figure 1

Figure 2

Figure 4

Figure 3●Main body and rainproof coverInstallation
methodDirectinstallation
methodAdapter
installation
methodModel nameFigure 2※1

Main body insutallation dimensions

Rainproof cover insutallation dimensions

a

b

c

d

e

f

g

h

j

k

m

RDH-3J1

50

30

85

（25）

25

55

5

85

115

ー

ー

RDH-5J1・RDHC-5J1

52.5

39

160

ー

70

70

5

67.5

72.5

52.5

ー

RDH-7J1・RDHC-7J1

65

50

185

ー

95

95

6

87.5

85

65

ー

RDH-10J1・RDHC-10J1

80

62.5

225

ー

125

125

6

112.5

100.5

79.5

ー

RDH-10J2・RDHC-10J2

90

135

350

175

250

125

6

112.5

162.5

142.5

10

RDH-5J1・RDHC-5J1

40

ー

100

18

6.5

ー

ー

ー

ー

ー

ー

RDH-7J1・RDHC-7J1

90

45

115

25

7.5

ー

ー

ー

ー

ー

ー

RDH-10J1・RDHC-10J1

90

45

150

25

7.5

ー

ー

ー

ー

ー

ー

RDH-10J2・RDHC-10J2

90

45

260

30

7.5

ー

ー

ー

ー

ー

ー

(Unit: mm)

Remarks
Figure 1

Moisture discharging
Installation dimensions
hole dimensions
Remarks
Unit name
Model namea b c d e f g h k
91 40 60 — — — 5 60 67 Figure 1
S-5J1
Element unit S-7J1
118 50 50 — — — 5 80 87 Figure 1
148 43.5 56.5 100 75 88 5 110 117 Figure 2
S-10J1173 84 — — — — 5 — — Figure 3
D-3006JWPower supply unit
216 84 — — — — 5 — — Figure 3
D-3010JW
Humidity
102 40 — — — — 5 — — Figure 4
controller unit C-M1J

Figure 3

Figure 4●Rainproof cover(Unit: mm)※1

Installation method Applicable model name
Directinstallation
methodRainproof cover installation dimensions

Remarks

m

n

p

q

For RDH-5J1

135

55

70

M4 screw

For RDH-7J1

175

65

85

M4 screw

For RDH-10J1

225

90

90

M4 screw Figure 2

Figure 1※1 Select a suitable rainproof cover for the element unit.
Example: S-5J1 -> For RDH-5J1

For the rainproof cover and adapter set, see page 9.

Figure 2

Figure 3
Figure 4Note: *1 Not necessary when a rainproof cover is not used.

12

13

ROSAHL
ELECTROLYTIC DEHUMIDIFIER

Precautions
for use ofdehumidifying
elements

Precautions
for use ofdehumidifier

1. Attach a protective cover when necessary to prevent hands or objects from coming into contact with the

1. Check the installation direction carefully before installation.

dehumidifying/humidifying surface of the element.

Installing in the opposite direction will reverse dehumidification and humidification, which may result in an adverse effect on

2. Check the installation direction carefully before installation.
Installing in the opposite direction will reverse dehumidification and humidification, which may result in an adverse effect on
the contents in the container.

satisfactory

3. Strictly follow the following instructions about power supply to the element.
(1) DO NOT reverse the polarity. Please check the indication of polarity for the product. (Attach a polarity indication LED on
the outside if necessary.)
Inverting the polarity will reverse dehumidification and humidification, which may result in an adverse effect on the contents
in the container and also will cause chemical reaction consuming the porous electrode at the cathode side and leading todamage of the element.
(2) The dehumidifying element naturally causes a relatively large starting current when the power is turned on. Therefore,
the specifications below are recommended for the power source.
(When multiple dehumidifying elements are connected in series or parallel, the breakage of one element may cause all otherelements to be disabled.)or bottom surface)
4. If there is rubber packing or a similar material that contains an antioxidant, crystalline substances may form on the element.
Careful evaluation of material is necessary when selecting a packing
5. Sealing agents should not be silicon-based.
(Silicon-based sealing agents generate oxime gas and siloxane gas during hardening, which quickly degrades theperformance of the dehumidifying element.)
Modified silicon caulk is mainly composed of polyurethane.
Consult us if any questions.
6. Do not expose the moisture discharging hole to water.
When using outdoors, be sure to attach a rainproof cover with anti-insect net (perforated metal) (optional) to protect from

Recommended power source specifications

MDL-3

Rated output voltage

MDL-5

2A

Rated output current

Overvoltage protection function

3. It is preferable that the product is installed in the center of the inner side surface of the container . (Do not install on the top

Recommended products: modified silicon caulk (Konishi) or acrylic caulk (Konishi)(3) Use a dedicated power source for each dehumidifying element.

Overcurrent protection function(constant or fold-back current limiting)the contents in the container.
2. The container must have a sealed structure. If the container is made of moisture-permeable material, the results may not be

○

3A

3 VDC

○

MDL-7

PD2/PD3/RD3/RD4

5A

500mA

○

○

Note: When fold-back current limiting is employed, the dehumidifying element may not function correctly.
○

Output voltage variation
Ripple noise
Others○○○water or insects.
7. Keep the moisture discharging side unsealed and well ventilated.
8. Do not use with vapor phase corrosion inhibitor or insect repellent. Do not use in an environment with a lot organic gas.
9. Consult us if there is dust or oil mist in the environment where the product will be used.
10.Do not attempt to disassemble, repair or modify the product, as this may damage it.

0. 1 V or less
0. 2 V or lessIn accordance with the specifications of commercially available power sources

4. The container must have a sealed structure. If the container is made of moisture-permeable material, the results may not besatisfactory.
5. It is preferable that the element is installed in the center of the inner side surface of the container with packing to ensure
airtightness of the container.
(Do not install on the top or bottom surface)
6. If there is rubber packing or a similar material that contains an antioxidant, crystalline substances may form on the element.
Careful evaluation of material is necessary when selecting a packing
7. Sealing agents should not be silicon-based.
(Silicon-based sealing agents generate oxime gas and siloxane gas during hardening, which quickly degrades theperformance of the dehumidifying element.)
Recommended products: modified silicon caulk (Konishi) or acrylic caulk (Konishi)
Modified silicon caulk is mainly composed of polyurethane.
Consult us if using a sealing agent not specified above.
8. When using outdoors:
MDL-3, MDL-5, MDL-7: Be sure to attach a rainproof cover with an anti-insect net ( perforated metal ) ( optional ) to protectfrom water or insects.
PD2, PD3, RD3, RD4: Cover the element with a cover or moisture-permeable sheet to prevent it from getting wet.
9. Keep the moisture discharging side unsealed and well ventilated.
10.Do not use with vapor phase corrosion inhibitor or insect repellent. Do not use in an environment with a lot of organic gas.
11.Consult us if there is dust or oil mist in the environment where the product will be used.
12.Do not attempt to disassemble, repair or modify the product, as this may damage it.

1415