INSTRUMENTATION > FLOW > Variable Area Flowmeter And Switch For High Pressure Applications
DS04 Flow Meter/Switch CLARK SOLUTIONS

Variable Area Flowmeter And Switch For High Pressure Applications


DESCRIPTION
The flow meter and switch model DS04 works according to a modified variable area principle. The float is guided in a cylindrical measuring tube by means of a slotted nozzle. 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.

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 measuring and switching range of the meter.


TECHNICAL SPECIFICATIONS
Max Pressure:
  brass version: 2900 psi/200 bar
  stainless steel version: 4350 psi/300 bar
Pressure Drop: 0.29-5.8 psi/0.02-0.4 bar
Max Temperature: 212°F/100°C
  (320°F/160°C on request) for liquids
  194 °F / 90 °C for gases
Materials:
  Wetted Parts: brass version: nickel plated
    brass
    stainless steel version: st. steel 316
    Ti/1.4571
O-rings: Buna (optionally: Viton, EPDM)
Electrical plug acc. to DIN 43650
Connection: (optionally: 1m cable
    connection)
Accuracy: ±5% f.s. for water,
    ± 10% f. s. for air
Analog output: see model DSxx-A in
    section "accessories"
FEATURES

Small Mounting Dimensions

Materials: Brass or Stainless Steel

Scales for Water and Air

High Switching Accuracy

Very Small Switch Hysteresis

Robust Design without Glass Measuring Tube

Suitable for Pressures up to 4350 psi / 300 bar

APPLICATION
The variable area flow meter and switch model DS04 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.

VERSIONS
  • flow switch only with Reed contact
  • optionally as flow meter and switch with external pointer
    indicator and contact
MEASURING RANGES
Water: 1.5-23.8 GPH … 65-790 GPH
Air: 2-59 SCFH … 7-51 SCFM
      (at 14.7 psia/1.013 bar abs. and 68°F/20°C)

MATERIALS
brass or stainless steel
CONTACTS
Function  
N/O: 250V, 3A, 100VA
SPDT:  250V, 1.5A, 30VA
*EX-N/O:  250V, 2A, 60VA
*EX-SPDT:  250V, 1A, 30VA
*Per ATEX 100aEXII 2 G, EEx m II T6
DIMENSIONS:
Model Mounting dimensions in inch / mm Weight (lbs / g)
SW D D1 B NPT / G T L without indication with indication
DS04.1.x.x.x 1.06/27 1.18/30 1.85/47 2.80/71 1/4" 0.55/14 5.12/130 1.76/800 1.87/850
DS04.2.x.x.x 1.06/27 1.18/30 1.85/47 2.80/71 1/2" 0.59/15 5.12/130 1.76/800 1.87/850
DS04.2.x.x.05 1.06/27 1.18/30 1.85/47 2.80/71 1/2" 0.59/15 5.83/148 1.87/850 1.98/900
DS04.3.x.x.x 1.34/34 1.57/40 2.24/57 2.80/71 3/4" 0.71/18 5.98/152 2.97/1350 3.08/1400
DS04.4.x.x.06/07 1.42/36 1.42/36 2.09/53 2.99/76 1" 0.75/19 6.14/156 2.31/1050 2.42/1100
DS04.4.x.x.08 1.97/50 1.97/50 2.64/67 2.99/76 1" 0.79/20 7.87/200 6.06/2750 6.17/2800
DS04 With Indicator Diagram
Electrical Connection
ORDERING INFORMATION
Order Number Example: DS04. 4. 1. 1. WA06. 1. 1. 1. 0
Variable Area Flowmeter And Switch For High Pressure Applications
Model Connection Material Scale Measuring ranges Version No. of contacts Contact function
DS04.1 and DS04.2 DS04.2 and DS04.3 DS04.3 and DS04.4 DS04.4 only
Water Air Water Air Water Air Air
DS04 1N=1/4" NPT female 1=brass 1=for water WU01=1.5–23.8 GPH LU01=2–59 SCFH WU05=32–285 GPH LU05=80–760 SCFH WU06=50–555 GPH LU07=2–24.5 SCFM LU08=7–51 SCFM 0=switch only, without flow rate indication 0=without contact 0=without contact
2N=1/2" NPT female 2=all st. steel AISI 316 Ti/1.4571 2=for air (at 14.7 psia/1.013 bar abs. and 68°F/20°C) WU02=3.0–47.5 GPH LU02=8–127 SCFH WA05=2-18 l/min LA05=40-360 Nl/min WU07=65–790 GPH LA06=60-700 Nl/min

LA08 = 200 - 1400 Nl/min

 1=1 contact 1=N/O
3N=3/4" NPT female WU03=1.0–127 GPH LU03 = 15 – 340 SCFH     WA06=3-35 l/min LA07=80-1000 Nl/min   2=2 contacts 2=SPDT
4N=1" NPT female   WU04=16–190 GPH LU04=40–510 SCFH WA07=4-50 l/min 1=flow meter and switch, with side indicator   3S=Ex-N/O (EEx m II T6)
1=G 1/4 female   WA01=0.1-1.5 l/min LA01=1-28 Nl/min     3U=Ex-SPDT (EEx m II T6)
2=G 1/2 female WA02=0.2-3 l/min LA02=4-60 Nl/min  
3=G 3/4 female WA03=0.3-8 l/min LA03=6-160 Nl/min  
4 = G 1 female WA04=1-12 l/min LA04=20-240 Nl/min
 
Options
0 = without
1 = please indicate
This product sold by PKP Process Instruments, Inc., a joint venture of Clark Solutions
and PKP Prozessmesstechnik GmbH.