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CLARK SOLUTIONS
DS20 Compact Variable Area Flowmeter
F.S. Ranges From 1.0 to 250 l/h, Alarm & Analog Output Options
DESCRIPTION
The flowmeter Model DS20 works according to the proven variable area principle.
A float is guided in a cylindrical measuring tube. The flowing medium moves the float in the flow direction. An externally mounted pointer indicator is magnetically coupled to the float and thus, following the float position, indicates the flow rate on a scale.
This indicator assembly is equipped with a scale calibrated to the operating conditions in the system and additionally may contain alarm contacts or an analog output.
Model DS20 is used for measuring and 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.
By using only stainless steel AISI 316 Ti for the wetted parts the meter is especially suited for aggressive media.
FEATURES
- For Liquids & Gases
- Pressure to 160 bar (2322 PSI)
- Temperature to 200oC
- AISI 316 Ti Stainless Steel Construction
- Individually Calibrated
- Alarm & Analog Outputs Available
VERSIONS
DS20.1 Flowmeter with local indication
DS20.2 Flowmeter with local indication, 1 min. contact
DS20.3 Flowmeter with local indication, 1 max.contact
DS20.4 Flowmeter with local indication, 1 min.
contact and 1 max. contact
DS20.5 Flowmeter with local indication and analog
output 4-20 mA
Optionally: valve on inlet or outlet (process
connections on back)
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SPECIFICATIONS
Materials:
Wetted Parts: st. steel AISI 316 Ti
Housing: stainless steel
Mounting Position: vertical, flow from bottom to top
Rated Pressure: 40, 100, or 160 bar depending on
process connection
Max. Temperature:
Local Indication: -80°C...+200°C
With Alarm Contacts: -40°C...+150°C
Analog Output: -40°C...+150°C
Electrical Protection: IP 65
Accuracy: +/- 4% of full scale
Alarm Contacts: SJ 3.5-N (NAMUR), inductive
Voltage Rating: 8 VDC (R i = 1 kOhm)
Supply Voltage: 5...25 VDC
Analog Output:
Output Signal: 4...20 mA
Supply Voltage: 14...30 VDC
Load: (Supply voltage-13.5V) ÷ .02 A
PROCESS CONNECTIONS
Flowmeter Supplied Without Needle Valve:
All screw connections are in accordance with model code,
100 bar rated pressure is standard.
Flowmeter Supplied With Needle Valve:
All screw connections in accordance with model code,
40 bar rated pressure (standard) or 100 bar rated pressure.
Flange connections are not possible.
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| Range No. |
Water Flow 20¡C (l/h) |
Air Flow @20¡C, 1.013 bar abs. (l/h) |
Pressure Drop (mbar) |
| 1 |
0.1...1 |
4...40 |
6 |
| 2 |
0.16...1.6 |
6...60 |
6 |
| 3 |
0.25...2.5 |
10...100 |
6 |
| 4 |
0.4...4 |
15...150 |
6 |
| 5 |
0.6...6 |
20...200 |
6 |
| 6 |
1...10 |
32.5...325 |
8 |
| 7 |
1.6...16 |
50...500 |
8 |
| 8 |
2.5...25 |
80...800 |
8 |
| 9 |
4...40 |
140...1400 |
11 |
| 10 |
6...60 |
200...2000 |
11 |
| 11 |
10...100 |
325...3250 |
11 |
| *12 |
16...160 |
500...5000 |
13 |
| *13 |
25...250 |
800...8000 |
13 |
| * Supplied with 3/8" connections unless provided with needle valve when 1/4" connections are provided. |
| Note: All flowmeters are calibrated for the actual working conditions. Virtually any units of measurement can be rendered on the flowmeter scale at no cost addition. |
| Some commonly ordered units include: |
ml/min |
ml/h |
| gph |
gpm |
| scfh scfm |
scfm |
| lpm |
lpd |
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ORDERING INFORMATION
Order number ABCDE
Example: DS20 41T60315 |
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| PLEASE CALL 1-800-253-2497 TO ORDER THESE ITEMS |
| A=Model |
B=Process connection |
C=Measuring ranges |
D=Valve (only for PN40)-1/4" connections only |
E=Version |
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Pressure rating (bar) |
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Valve Seat |
| DS20 |
41G4= |
G 1/4 female |
40 |
1...13= |
measuring range no. acc. to table |
0= |
without |
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1= |
local indication only |
| 41G6= |
G 1/4 female |
100 |
1= |
valve at inlet |
silver |
| 41G7= |
G 1/4 female |
160 |
2= |
valve at inlet |
PCTFE |
2= |
local indication, 1 min. contact |
| 41T4= |
1/4" NPTF |
40 |
99= |
other (please indicate in writing) |
3= |
valve at outlet |
silver |
| 41T6= |
1/4" NPTF |
100 |
4= |
valve at outlet |
PCTFE |
3= |
local indication, 1 max. contact |
| 41T7= |
1/4" NPTF |
160 |
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| *42T4= |
3/8" NPTF |
40 |
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4= |
local indication, 1 min. and 1 max. contact |
| *42T6= |
3/8" NPTF |
100 |
| *42T7= |
3/8" NPTF |
160 |
5= |
local indication, analog output 4...20 mA |
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Pressure rating (lbs) |
| 01A1= |
ANSI Flange, 1/2" |
150 |
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| 02A1= |
ANSI Flange, 1.0" |
150 |
| 01A2= |
ANSI Flange, 1/2" |
300 |
| 02A2= |
ANSI Flange, 1.0" |
300 |
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| Options |
| 1=special calibration or other feature(s) needed, provide written details |
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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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