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CLARK SOLUTIONS
DS02 Miniature Variable Area Flow Switch
DESCRIPTION
The flow meter and switch model DS02 works according to a modified variable area principle. The float is guided in a cylindrical measuring tube by means of a spring. The flowing medium moves the float in the flow direction. A Reed contact is mounted outside the meter in a sealed housing. When the float reaches the position of the Reed contact the switch will close. With higher flows the float moves further upward until it reaches a built-in float stop, still keeping the switch closed. This ensures a bistable switch function at any time. The Reed contact is adjustable over the full switching range of the meter.
TECHNICAL SPECIFICATIONS
Max Pressure:
DS02.1/2 4350 psi / 300 bar (brass),
5000 psi / 350 bar (stainless steel)
DS02.3/4 3600 psi / 250 bar (brass),
4350 psi / 300 bar (stainless steel)
Pressure Drop:
DS02.1: 0.29-2.9 psi/0.02-0.2 bar
DS02.2: 0.29-4.35 psi/0.02-0.3 bar
DS02.3/4: 0.29-5.8 psi/0.02-0.8 bar
Max Temperature: 212°F/100°C
(optionally 320°F/160°C) for liquids,
(160° optional)
Materials:
Brass Version: housing: nickel plated
brass
St. Steel Version: stainless steel:
316 Ti / 1.4571
Electrical Connections - plug acc. to
DIN 43650 (optionally: 1m cable
connection for DS02.1, N/O only)
Accuracy - ±10% f.s.
Analog Output: see model DSxx-A in
section "accessory"
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FEATURES
Small Mounting Dimensions
Materials: Brass or Stainless Steel
Scales for Water and Air
Universal Mounting Position
High Switching Accuracy
Very Small Switch Hysteresis
APPLICATION
The variable area flow and switch model DS02 is used for monitoring the flow of low viscosity liquids and gases, i.e., in cooling circuits of welding machines and laser systems, for pump monitoring, compressors and many other applications.
SWITCHING HYSTERESIS
By careful selection of the Reed contacts, the switching hysteresis could be reduced to only 0.02" - 0.06" / 0.5 - 1.5 mm float movement.
MEASURING RANGES
Water: 0.08 - 0.95 GPH … 16 - 40 GPM
5 - 60 ml/min … 60 - 150 l/min
Air: 0.4 - 2.75 SCFH … 7.0 - 22.0 SCFM
0.6 -2.2 Nl/min … 200 - 650 Nl/min
(at 14.7 psia/1.013 bar abs. and 68 °F/20 °C)
MATERIALS
brass or stainless steel
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| CONTACTS |
| Function |
DS02.1 |
DS02.2 |
DS02.3 / DS02.4 |
| N/O |
200 V, 1A, 20VA |
230 V, 3A, 60 VA |
250 V, 3A, 100VA |
| SPDT |
200 V, 1A, 20VA |
250V, 1.5A, 50 VA |
250V,1,5 A,50 VA |
| *NO |
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250V, 2A, 60VA |
| ex-SPDT* |
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250V, 1A, 30VA |
| *Per ATEX 100aEXII 2 G, EEx m II T6 |
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| Model |
Mounting dimensions in inch / mm |
Weight
(lbs / g) |
| SW |
D |
B |
NPT / G |
T |
L |
| DS02.1 |
0.67 / 17 |
0.67 / 17 |
1.85 / 47 |
1/4 |
0.39 / 10 |
2.56 / 65 |
0.31 / 140 |
| DS02.2 |
1.06 / 27 |
1.22 / 31 |
2.05 / 52 |
1/2 |
0.55 / 14 |
3.53 / 90 |
0.77 / 350 |
| DS02.3 |
1.61 / 41 |
1.85 / 47 |
2.99 / 76 |
3/4 |
0.83 / 21 |
5.98 / 152 |
2.43/1100 |
| DS02.4 |
1.61 / 41 |
1.85 / 47 |
2.99 / 76 |
1 |
0.67 / 17 |
5.12 / 130 |
2.65/1200 |
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ORDERING INFORMATION
Order Number Example: DS02. 1. 1. 1. W13 1. 1. 0
Miniature variable area flow switch |
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| PLEASE CALL 1-800-253-2497 TO ORDER THESE ITEMS |
| Model |
Connection |
Material |
Scale |
Measuring Ranges |
No. of Contacts |
Contact Function |
| DS02.1 only |
DS02.2 only |
DS02.3 or DS02.4 |
DS02.4 only |
| Water |
Air |
Water |
Air |
Water |
Air |
Water |
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DS02
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2N=1/2" NPTF |
1=brass, spring of st. steel 304/1.4310 |
1=water |
WU101=0.08-0.95 GPH |
LU1002=1.30-4.70 SCFH |
WU202=0.30-3.35 GPH |
LLU2010=5.5-21.0 SCFH |
WU3030=160-480 GPH |
LU30180=125-380 SCFH |
WU3150=16.0-40.0 GPM |
1=1 contact |
1=N/O |
| 2=air (14.7 psia/1.013 bar abs. & 68°F/20°C) |
WU102=0.65-2.05 GPH |
LU1006=3.50-12.70 SCFH |
WU206=3.20-9.50 GPH |
LU2020=12.0-42.0 SCFH |
WU3045=240-710 GPH |
LU30300=210-635 SCFH |
W3150=60-150 l/min |
2=2 contacts |
2=SPDT |
| 3N=3/4" NPTF |
WU106=1.6-9.5 GPH |
LU1008=5.3-17.0 SCFH |
WU21=6.5-28.5 GPH |
LU2030=17.0-64.0 SCFH |
WU3060=320-950 GPH |
LU30650=7.00-23.0 SCFM |
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3S=Ex-N/O (EEx m II T6), DS02.3, DS02.4 only |
| 2=all stainless steel 316 Ti/1.4571 |
WU11=3-19 GPH |
LU1012=6.5-25.5 SCFH |
WU23=13.0-51.0 GPH |
LU2035=21.0-74.0 SCFH |
WU3090=8.00-24.0 GPM |
L30180=60-180 Nl/min |
| 1=G 1/4 female |
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WU12=6.5-41.5 GPH |
LU1022=6.0-47.0 SCFH |
WU27=32.0-111 GPH |
LU2090=50.0-190 SCFH |
W3030=11-30 l/min |
L30300=100-300 Nl/min |
| WU13=8.0-48.0 GPH |
LU1024=15.0-51.0 SCFH |
WU213=48.0-205 GPH |
LU2220=115-465 SCFH |
W3045=15-45 l/min |
L30650=200-650 Nl/min |
3U=Ex-SPDT (EEx m II T6), DS02.3, DS02.4 only |
| 2=G 1/2 female |
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WU15=16.0-80.0 GPH |
LU1034=25.0-72.0 SCFH |
WU220=65.0-315 GPH |
LU2240=140-510 SCFH |
W3060=20-60 l/min |
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| W101=5-60 ml/min |
LU1056=34-119 SCFH |
WU230=130-480 GPH |
LU2300=170-640 SCFH |
W3090=30-90 l/min |
| 3=G 3/4 female |
W102=40-130 ml/min |
LU1080=42-170 SCFH |
W202=0.02-0.2 l/min |
LU2525=5.00-18.50 SCFM |
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| W106=0.1-0.6 l/min |
L1006=1.7-6.0 Nl/min |
W206=0.2-0.6 l/min |
L2010=2.5-10 Nl/min |
| 4=G 1 female |
W11=0.2-1.2 l/min |
L1008=2.5-8.0 Nl/min |
W21=0.4-1.8 l/min |
L2020=5.5-20 Nl/min |
| W12=0.4-2 l/min |
L1012=3-12 Nl/min |
W23=0.8-3.2 l/min |
L2030=8-30 Nl/min |
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W13=0.5-3 l/min |
L1022=3-22 Nl/min |
W27=2-7 l/min |
L2035=10-35 Nl/min |
| W15=1.0-5 l/min |
L1024=7-24 Nl/min |
W213=3-13 l/min |
L2090=24-90 Nl/min |
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L1034=12-34 Nl/min |
W220=4-20 l/min |
L2220=55-220 Nl/min |
| L1056=16-56 Nl/min |
W230=8-30 l/min |
L2240=65-240 Nl/min |
| L1080=20-80 Nl/min |
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L2300=80-300 Nl/min |
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L2525=140-525 Nl/min |
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| Options |
| 0 = without |
| 1 = please indicate |
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This product sold by PKP Process Instruments, Inc., a joint venture of Clark Solutions
and PKP Prozessmesstechnik GmbH. |
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