INSTRUMENTATION > FLOW > 7000/8000 Series Flow Meter With Optional Outputs
CLARK SOLUTIONS

7000/8000 Series Flow Meter With Optional Outputs

Differential Pressure Orifice Type, Liquids & Gases

DESCRIPTION
Use the 7000/8000 series flow meters for measuring the flow rate of liquids, gases, compressed air and steam in closed pipes. We also make indicating flow switches and flow transmitters for process indication and control. Meters feature a large easy to read analog dial with 270 degree pointer movement.

Our flow meters are suited to a wide range of applications where affordability, reliability and ruggedness are important considerations.

Liquid flow meters are suitable for potable and nonpotable water, irrigation water, glycol-water mixtures, fuel oils, lubricating oils, gasoline and many other low and medium viscosity liquids (maximum viscosity 500 centipoise).

Gas flow meters are suitable for compressed air and most other compressed gases including carbon dioxide, helium and hydrogen, acetylene, nitrogen. Standard pressure rating is to 180 psig. Optional high pressure to 400 psig. Not recommended for toxic gases.

Steam flow meters measure saturated steam flow at pressures up to 120 psig.

Any of our flow meters can be fitted with a flow transmitter for sending a signal to a remote device such as a computer, data logger, chart recorder or remote indicator.

Don't get just a blind flow switch. Get a flow switch that also shows you the flow rate! Any of our flow meters can be fitted with one or two reed switches to provide a signal of low or high flow rates.
Flow Meter7000/8000 Series Flow Meter With Optional Outputs
Cutaway View
SPECIFICATIONS
General
Accuracy: ± 3% F.S.
Repeatability: ± 1% F.S.
Pressure, max: 180 psig(12.6 kg./cm2);
   400 psig optional
Pressure, min.: 10 psig (0.67 kg/cm2)
Temperature, max.: 212°F 100°C;
   350°F 177°C optional
Temperature, min.: -30°F -34°C;
   -80°F -62°C optional
Viscosity, max.: 5 centipoise (to 500 cps
   optionally available)
Pressure Drop: Bronze, Max 5 PSIG;
   SS & Monel, Max 7 PSIG
7000 Series Cutaway View
TRANSMITTERS
Option: 4-wire (option W, Y, Z) 2-wire (option W2, W3)
Accuracy:    
  Horizontal Flow ±3% F.S. above 30% F.S. ±3% F.S. above 15% F.S.
  Vertical Flow ±5% F.S. above 30% F.S. ±3% F.S. above 15% F.S.
Ambient Temp Limit:  120ºF (50ºC) 120ºF (50ºC)
Current Output: 4-20 mA, 800 ohms max. (linear with flow) 4-20 mA, 650 ohms max. (350 ohms with option R)  (signal proportional to flow rate squared)
Frequency Output (Option Y): 1000 Hz F.S. 5 V peak, 270 µs on time n/a
Electrical Rating:  General Purpose General Purpose (IS applied for)
Power Input: 24 Vdc, 100 mA 24 Vdc, 25 mA
Meter Housing & Indicator orientation Choices & Designations
Reed Switches
Setability: ±5% F.S.
Repeatability: ±1% F.S.
Hysteresis: 7 to 13% F.S.
Contact Rating: 3 watts
Voltage: 175 Vdc - max
245 Vac - max
Current : 250 mA max switching
1.0 Amp max. carry
Meter Housing & Indicator orientation
Choices & Designations
7000 Series
Table 1 Dimensions 7000 Series
Pipe Size A B C D H-Hex, S-Square Weight (lbs)
1/4" NPT 151 78 38 32S 4
1/2" NPT 151 78 38 32S 4
3/4" NPT 151 78 38 32H 4
1" NPT 154 78 44 38H 5
1-1/2" NPT 162 78 64 54H 5
2" NPT 172 81 81 70H 7
3" NPT 190 106 117 102H 12
8000 Series
Table2 Dimensions 8000 Series
Pipe Size A B Weight (lbs)
1/2" 168 43 4
3/4" 179 51 5
1" 184 60 5
1-1/2" 198 79 7
2" 203 95 8
2-1/2" 217 108 9
3" 225 127 11
4" 252 156 15
5" 263 187 20
6" 280 213 24
8" 311 264 33
Dial
Table 3 Dials & Scales
Range Smallest Increment Range Smallest Increment
Max Min Max Min
1 0.15 0.01 100 15 1
2 0.30 0.05 120 15 1
3 0.40 0.05 150 20 2
4 0.50 0.10 200 30 2
6 0.50 0.10 240 30 2
8 1.0 0.10 250 30 5
10 1.5 0.10 300 40 5
15 2.0 0.20 400 50 10
20 3.0 0.50 600 50 10
25 3.0 0.50 800 100 10
30 4.0 0.50 1000 150 10
40 5.0 1.0 1500 200 20
50 6.0 1.0 2000 300 20
60 5.0 1.0 3000 400 50
80 10.0 1.0 4000 500 100
Connection Detail
Table 4
7000 Series (Threaded) Full Scale Flow Range
Size Liquid Gas (Option I)
Inches mm GPM LPM SCFM Nm3/h
1/4 08 2 8 10 15
1/4 08 3 15 20 30
1/4 08 4 25 30 50
1/2 15 2 8 10 15
1/2 15 3 10 20 30
1/2 15 4 15 30 50
1/2 15 6 25 40 80
1/2 15 10 40 60 100
3/4 20 6 25 60 100
3/4 20 10 40 100 150
3/4 20 15 60 150 200
3/4 20 20 80 200 300
1 25 15 60 150 250
1 25 20 80 200 400
1 25 30 120 300 500
1 25 40 150 400 600
1-1/2 40 30 120 300 500
1-1/2 40 40 150 400 600
1-1/2 40 60 240 600 1000
1-1/2 40 100 400 800 1200
2 50 40 150 400 600
2 50 60 240 600 1000
2 50 100 400 800 1200
2 50 150 600 1000 1500
2 50 200 800 1200 2000
3 80 200 800 1000 1500
3 80 300 1000 2000 3000
3 80 400 1500 3000 5000
3 80 500 2000 4000 6000
Table5
7000 Series Low Flow Option ES, Full Scale Flow Range
Size Liquid Gas (Option I)
Inches mm GPH LPM cc/m SCFH Nm3/h 
1/2 15 4 15 200 40 1
1/2 15 6 20 300 60 2
1/2 15 10 40 400 100 3
1/2 15 15 60 600 150 4
1/2 15 20 80 1000 200 6
1/2 15 30 120 2000 300 8
1/2 15 40 150 3000 400 10
1/2 15 60 240 4000 - -
1/2 15 100 400 6000 - -
Table 6
8000 Series (Wafer) Full Scale Flow Range
Size Liquid Gas (Option I)
Inches mm GPM LPM SCFM Nm3/h
2-1/2 65 80 240 600 1000
2-1/2 65 100 400 800 1200
2-1/2 65 150 600 1000 1500
2-1/2 65 200 800 1200 2000
4 100 300 1000 1500 50
4 100 400 1500 3000 100
4 100 600 2400 5000 150
4 100 800 3000 6000 200
5 125 300 1000 1500 50
5 125 400 1500 3000 100
5 125 600 2400 5000 150
5 125 800 3000 6000 200
6 150 600 2400 3000 100
6 150 800 3000 5000 150
6 150 1000 4000 8000 250
6 150 2000 8000 15000 400
8 200 600 2400 5000 150
8 200 1000 4000 8000 250
8 200 2000 8000 15000 400
8 200 3000 12000 20000 600
Table 7 Options
Option Description
A Viton seals
B EPR seals
B2 Teflon seals
C Calibrate for Sp. Gravity
D Gasketed case (NEMA-4X)
E Non-standard flow rate
ES Low flow (below 2GPM)
G Custom scale/dial
H High pressure service (400 psig/Inconel bellows)
I Compressed Gas Service
J Peak Flow Indicator (second pointer w/reset)
K Saturated steam service; EPR seals, SS bellows, inverted housing, max 120 PSI
N Ammonia Service
P Panel Mount (1/4 &1/2")
R Digital Display (rate & total)
R2 Remote readout, Bronze
R3 Remote readout, SS
T Expanded Temp. (to 350oF)
V High Viscosity (5-500 cps)
W 4-20 mA (linear)
W2 4-20 mA w/local mechanical indicator, (requires external square root extractor)
W3 Same as W2, no indicator
IS Instrinsic Safety for W2 & W3 (consult factory for details)
Y Frequency Output 
    PLEASE CALL 1-800-253-2497 TO ORDER  
    A) Select Size (pipe size at meter inlet) - Tables 4,5,6
    B) Specify model series
         7 = 7000 Series (NPT Connections)
         8 = 8000 Series (Wafer Style Flange Mount) 
    C) Specify Body Material 
         1 = Bronze
         2 = Monel
         3 = 316 SS 
    D) Specify Flow Direction ("Meter Housing & Indicator Orientation" illustration) 
    E) Flow Rate & Units (select from Tables 4,5,6) Be sure to designate option I if intended for gas service. 
    F) Options (select from options Table 7) 
    G) Switches (if required)
         1S2 = One SPDT reed switch
         2S2 = Two SPDT reed switches
    EXAMPLE: 3/4 7 1 R 20 AD 1S2