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Application
Monitoring the contamination of suction resp. return fi lters.
General
Filter elements installed in hydraulic fi lters remove dirt from a
hydraulic system and therefore become contaminated themselves.
Free pores or spaces in the fi lter material are obstructed by dirt
particles, which causes a continuous increase in the pressure
loss.
DG 100 · DG 101 · DG 200 · DG 813 · DG 815 · DG 819 · DG 902
for Suction or Return Filters · Connection G¼ resp. M12 x 1.5 · Response / switching pressure up to 2.5 bar / 36.3 psi
Clogging Indicators
Description
Manometer DG 100
Pressure switch DG 815
The dirt load collected in a fi lter element gradually increases
during service, which also leads to a higher pressure drop. The
resulting vacuum or back pressure is monitored by a clogging
indicator. Once a preset value is reached, an electrical and / or
optical signal is generated.
The following must be observed in this context:
The pressure drop caused by the fi lter element increases
depending on the fl ow rate, the dirt load, and the viscosity of
the pressure fl uid. Therefore, a fi lter element is not regarded
contaminated before the clogging indicator responds at
operating temperature of the hydraulic system, causing a
continuous signal.
Consequences of an overdue fi lter element change
Filters with by-pass valve:
The more dirt has collected in the fi lter element, the more
frequently the bypass valve opens and part of the hydraulic fl uid
remains unfi ltered. The high pressure drop causes unnecessary
power consumption.
Suction fi lters without by-pass valve:
There is a high risk of pump cavitation with increasing vacuum
caused by contaminated elements.
100
70
60
50
0
50
10095
Response range of clogging indicator
Typical development of dirt accumulation in a
fi lter element during its service life
Service life [%]
Differential pressure[%]
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Characteristics
DG 100 DG 101 DG 902 DG 200 DG 813 DG 815 DG 819
Operating pressure -1.0 ... +0.25
bar
-14.5 ... +3.6
psi
-1.0 ... +0.25
bar
-14.5 ... +3.6
psi
-0.5 ... +1.0
bar
-7.3 ... +14.5
psi
0 ... + 10.0
bar
0 ... +145
psi
0 ... + 10.0
bar
0 ... +145
psi
0 ... + 10.0
bar
0 ... +145
psi
0 ... + 10.0
bar
0 ... +145
psi
Connection Threaded ports according to ISO 228 or DIN 13.
Sizes see Selection Chart, column 6 (other port threads on request).
Hydraulic fluids Mineral oil and biodegradable fluids (HEES and HETG, see info-sheet 00.20)
Temperature range
of fluids
-30 °C ...
+100 °C
(short term
+120 °C)
-22 °F ...
+212 °F
(short term
+248 °F)
-30 °C ...
+100 °C
(short term
+120 °C)
-22 °F ...
+212 °F
(short term
+248 °F)
-15 °C ...
+100 °C
(short term
+130 °C)
+5 °F ...
+212 °F
(short term
+266 °F)
-20 °C ...
+90 °C
-4 °F ...
+194 °F
-30 °C ...
+100 °C
(short term
+120 °C)
-22 °F ...
+212 °F
(short term
+248 °F)
-30 °C ...
+100 °C
(short term
+120 °C)
-22 °F ...
+212 °F
(short term
+248 °F)
-30 °C ...
+100 °C
(short term
+120 °C)
-22 °F ...
+212 °F
(short term
+248 °F)
Ambient temperature
range
-30 °C ...
+80 °C
-22 °F ...
+176 °F
-30 °C ...
+80 °C
-22 °F ...
+176 °F
-30 °C ...
+80 °C
-22 °F ...
+176 °F
-20 °C ...
+90 °C
-4 °F ...
+194 °F
-30 °C ...
+80 °C
-22 °F ...
+176 °F
-30 °C ...
+80 °C
-22 °F ...
+176 °F
-30 °C ...
+80 °C
-22 °F ...
+176 °F
* Design-related the switching tolerance increases at temperatures -15 °C / +5 °F.
Characteristics
Materials
DG 100: Housing steel, fitting brass, seal copper
DG 101: Housing steel, fitting brass, seal copper
DG 902: Housing brass, protection cap polyamide,
diaphragm FPM, seal NBR
DG 200: Housing polyamide, fitting brass, seal PTFE
DG 813 / DG 819: Housing steel galvanized, protection cap
NBR, diaphragm NBR, seal copper
DG 815: Housing polyamide, fitting steel galvanized,
diaphragm NBR, seal copper
Operating voltage
10 ... 30 V DC
(only required for clogging indicators with built-in LEDs).
Electrical service life
DG 902 / DG 813 / DG 815 / DG 819:
min. 10
6
switching cycles
Electrical protection
› DG 902: IP 44 (with protection cap)
› DG 813: IP 65 (switch housing), IP 54 (with protection cap)
› DG 815: IP 65 (with mounted and secured socket)
› DG 819: IP 67 (in connected condition)
Electrical connection
› DG 902: Flat plugs DIN 46247 - 6.3 x 1 / 0.25 x 0.04
Cable diameter approx. 6.5 mm / 0.26 inch
› DG 813: Flat plugs DIN 46244 - A 6.3 - 0.8 / 0.25 x 0.03
Cable diameter approx. 4 mm / 0.16 inch
› DG 815: Socket DIN 43650 - AF3
Cable diameter 6 ... 8 mm / 0.24 ... 0.31 inch
› DG 819: Mating plug AMP Superseal and
Deutsch DT04-2P resp.
Cable diameter approx. 4 mm / 0.16 inch
Mounting position
No limitation
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Overview of types
DG 100 / DG 101 - Manometer for Suction Filters
DG 902 - Vacuum Switch for Suction Filters (change-over)
DG 200 - Manometer for Return Filters
DG 813 / DG 819 - Pressure Switch for Return Filters
(make/break)
DG 815 - Pressure Switch for Return Filters (change-over)
Function:
Manometer for optical monitoring of the dirt load in suction
fi lters.
Green reading area = fi lter element O.K.,
Red reading area = fi lter element clogged.
Option:
Bottom-mounted fi tting (DG 101), making it possible to turn the
manometer into the direction from which it is viewed, as
compared to a fi tting mounted on the back (standard).
Function:
When the preset vacuum is reached, the built-in diaphragm
switch changes over.
The change-over (CO) switch makes it possible to indicate a
broken wire by means of a suitable electronic circuit, as
compared to a make contact (normally open / NO) switch.
Function:
Manometer for optical monitoring of the dirt load in return
fi lters.
Green reading area = fi lter element O.K.,
Red reading area = fi lter element clogged.
In order to protect the measuring element from pressure peaks,
the unit is provided with a built-in orifi ce system.
Option:
Bottom-mounted fi tting, making it possible to turn the mano-
meter into the direction from which it is viewed, as compared to
a fi tting mounted on the back (standard).
Function:
The diaphragm switch closes resp. opens as soon as the pressure
exceeds the preset value.
Accessories:
Suitable protection caps for DG 813 are available under part no.
DG 813.0701
(central hole for cable Ø 1.5 up to 5 mm / Ø 0.06 up to 0.20 inch)
and
DG 813.0702
(2 holes for cable Ø 1.7 up to 2.2 mm / Ø 0.07 up to 0.09 inch).
Function:
When the preset back pressure is reached, the built-in
diaphragm switch changes over.
The change-over (CO) switch makes it possible to indicate a
broken wire by means of a suitable electronic circuit, as
compared to a make contact (normally open / NO) switch.
Option:
The transparent socket with 2 built-in LEDs makes it possible to
have an additional optical indication of the element contamination.
When the operating voltage is switched on, a green LED lights
up. When the switching pressure is reached, a yellow LED lights
up in addition.
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Selection Chart
Remarks:
› With return filters, the response/switching pressure of the clogging indicator used must be lower than the cracking pressure of
the bypass valve, with suction filters it must be higher.
› Clogging indicators listed in this chart are standard units. Other designs available on request.
Part No.
Optical indicator
Electrical switch
Temperature suppression
< +32 °C / +90 °F
Response /
switching pressure
Type of contact
Switching voltage U
Switching current I
Switching power P
Symbol
Weight
Remarks
bar psi V
AC/DC
A
AC/DC
VA/W
AC/DC
kg lbs
1 2 3 4 5 6 7 8 9 10 11 12
DG 100-00 • - - -0.25 -3.6 - - - - 1 0.11 0.24 fitting on the back
DG 101-04 • - - -0.25 -3.6 - - - - 1 0.11 0.24 bottom fitting
DG 902-11 - • - -0.15 -2.2 change-over 250/24 6.0/2.0 1500/48 2 0.13 0.29 with protection cap
DG 902-12 - • - -0.25 -3.6 change-over 250/24 6.0/2.0 1500/48 2 0.13 0.29 with protection cap
DG 200-05 • - - +1.0 +14.5 - - - - 1 0.07 0.15 fitting on the back
DG 200-11
1
• - - +1.0 +14.5 - - - - 1 0.07 0.15 fitting on the back
DG 200-06 • - - +2.0 +29.0 - - - - 1 0.07 0.15 fitting on the back
DG 200-15
1
• - - +2.0 +29.0 - - - - 1 0.07 0.15 fitting on the back
DG 200-16
2
• - - +2.0 +29.0 - - - - 1 0.07 0.15 fitting on the back
DG 200-10 • - - +2.0 +29.0 - - - - 1 0.07 0.15 bottom fitting
DG 813-00 - • - +1.2 +17.4 make 42/42 4.0/4.0 100/100 3 0.09 0.20 without
protection cap
DG 813-03 - • - +1.5 +21.8 make 42/42 4.0/4.0 100/100 3 0.09 0.20 without
protection cap
DG 813-01 - • - +2.0 +29.0 make 42/42 4.0/4.0 100/100 3 0.09 0.20 without
protection cap
DG 813-05 - • - +2.5 +36.3 make 42/42 4.0/4.0 100/100 3 0.09 0.20 without
protection cap
DG 813-20 - • - +1.2 +17.4 break 42/42 4.0/4.0 100/100 4 0.09 0.20 without
protection cap
DG 813-21 - • - +2.0 +29.0 break 42/42 4.0/4.0 100/100 4 0.09 0.20 without
protection cap
DG 819-21 - • - +2.0 +29.0 break 42/42 ≤4.0 100 /100 4 0.09 0.20 AMP Superseal
DG 819-22 - • - +2.0 +29.0 break 42/42 ≤4.0 100 /100 4 0.09 0.20 Deutsch DT04-2P
DG 815-01 - • - +1.2 +17.4 change-over 250/30 4.0/4.0 250/60 5 0.13 0.29 incl. socket
DG 815-11 • • - +1.2 +17.4 change-over -/30 -/0.25 -/3.0 6 0.13 0.29 incl. socket
DG 815-02 - • - +2.0 +29.0 change-over 250/30 4.0/4.0 250/60 5 0.13 0.29 incl. socket
DG 815-12 • • - +2.0 +29.0 change-over -/30 -/0.25 -/3.0 6 0.13 0.29 incl. socket
1
For FR 043 / FR 072 (with preformed seals)
2
For FNA 008 / FNA 016 (as DG 200-06 but without throttle screw)
Subject to change · 60.20-EN/US · 0818
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Dimensions
A
F
D
E
ØC
B
G
A
C
H
D
F
E
ØG
K
ØB
DG 813
DG 815
DG 902
DG 200
DG 100 / DG101
A
GD
C
F
E
ØB
A
H
D
G
E
red
area
green
area
Fitting on
the back
(DG100)
Seal
Bottom fitting
(DG 101)
H
I
A
K
F
D
E
ØC
G
Protection caps
(on request)
Seal A12 x 15.5
(on request)
Seal A12 x 17
Cable hole - Ø approx. 6.5 mm (0.26 inch)
Clamping bead for strain relief
Seal
A
H
D
C
G
F
E
ØB
A
D
G
E
red
area
Response Pressure 1.0 bar
(14.5 psi)
Response Pressure 2.0 bar
(29.0 psi)
red
area
Bottom fitting
(optional)
Seal
Fitting on
the back
green
area
green
area
Subject to change · 60.20-EN/US · 0818
DG 819
Deutsch DT 04-2P
2-pole
AMP Superseal
2-pole
DT 04-2P
AMP Superseal
A
ØC
H
D
E
ØB
F
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Measurements in mm
Type A B C D E F G H I K
DG 100 / 101* 50 / 84* 64 30 13 G¼ 14 3.2 10* - -
DG 902 76 50 56 10 G¼ 21 18.5 20 34 30
DG 200 47 / 59* 41 26 / 24* 12 M12x1.5 14 / 12* 5 9* - -
DG 813 55 23.3 24 9 M12x1.5 AF 24 13 9 88 74
DG 815 92 50 34 9 M12x1.5 AF 27 40 - - -
DG 819-21 70 23.3 24 9 M12x1.5 AF 24 - - - -
DG 819-22 71 23.3 24 9 M12x1.5 AF 24 - - - -
* Bottom fitting
Type A B C D E F
mm
G H I K
DG 100 / 101* 1.97 / 3.31* 2.52 1.18 0.51 G¼ 14 0.13 0.39* - -
DG 902 2.99 1.97 2.20 0.39 G¼ 21 0.73 0.79 1.34 1.18
DG 200 1.85 / 2.32* 1.61 1.02 / 0.94* 0.47 M12x1.5 14 / 12* 0.20 0.35* - -
DG 813 2.17 0.92 0.94 0.35 M12x1.5 AF 24 0.51 0.35 3.46 2.91
DG 815 3.62 1.97 1.34 0.35 M12x1.5 AF 27 1.57 - - -
DG 819-21 2.76 0.92 0.94 0.35 M12x1.5 AF 24 - - - -
DG 819-22 2.80 0.92 0.94 0.35 M12x1.5 AF 24 - - - -
Symbols
Measurements in inch
1 2 3
4 5 6
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Quality Assurance
Quality management according to DIN EN ISO 9001
Various quality controls during the production process guarantee the leakfree function and solidity of our products.
Spare Parts
1
2
4
7
4
3
8, 9
5
6
DG 100
DG 101
DG 815
DG 819
DG 902
DG 813
Pos. Designation Part No.
1 Seal DG 100.0101
2 Seal DG 902.0103
3 Protection cap DG 902.1701
4 Seal * A12 x 15.5
DIN 7603-Cu
11049900
5 Protection cap * DG 813.0701
6 Protection cap * DG 813.0702
7 Seal A12 x 17
DIN 7603-Cu
11164200
8 Socket
DIN 43650 - AF3
DG 041.1220
9 Socket with 2 LED
DIN 43650 - AF3
DG 041.1200
The functions of the complete filters as well as the outstanding
features of the filter elements assured by ARGO-HYTOS can
only be guaranteed if original ARGO-HYTOS spare parts are
used.
*Not included in basic unit
Illustrations may sometimes differ from the original. ARGO-HYTOS is not responsible for any unintentional mistake in this specification sheet
.
Subject to change · 60.20-EN/US · 0818
