INSTRUMENTATION > FLOW > EX 80 Series Electromagnetic Liquid Flow Transmitters
The EX81 is an insertion electromagnetic flowmeter for use with conductive liquids in pipe sizes 1" to 3". The EX82 is for use with pipe sizes 4" to 8". With no moving parts, it is highly suitable for corrosive environments and for difficult applications such as those involving changing viscosities and pulsating flows. It is particularly recommended for metering the output of air-driven diaphragm pumps.
Designed for modularity and versatility, the EX81 has a current-sinking pulse output, which can be combined with the appropriate transmitter or indicator depending on the application. For analog output and display of rate and total, an FT420 can be used. For analog only, the AO55 can be mounted directly onto the meter. The PD10 can be used to divide the pulse for pacing chemical metering pumps. If the EX81 is being used with a programmable controller, the output signal can be fed directly with no other conditioning required.
The EX81 requires a special fitting, since it is not depthadjustable. Installation in the fitting ensures correct depth placement in the pipe. Fittings and sensors are available in PVC, brass, and stainless steel.
Power: 12 - 24 Vdc, 250 mA
Flow Range: 0.2 - 20 ft/sec (0.06 - 6.09 m/sec)
Fittings: Since the EX80-Series sensors are not adjustable, they must
be purchased with fittings appropriate to the application. The EX81
is sized for 1" to 3" fittings. The EX82 is for 4" to 8" fittings. Each
fitting ensures that the flow sensor is installed at the correct point.
Every flow sensor and every tee fitting is wet calibrated. Saddle
fittings are normally not wet calibrated, because they are field-
installed on a pipe. In PVC however it is possible to order a saddle
pre-installed on a standard length of pipe, in which case the entire
assembly is wet-calibrated. For all other saddles, the k-factor (pulses
per gallon) is established through testing with various standard
schedules of pipe and provided with the saddle.
Max. Temperature: PVC, ° to 130°F (55°C); Brass & SS, 200°F (93°C)
Pressure: 200 psi (13.8 bar)
Minimum Conductivity: 20 microsiemens/cm
Mechanical Materials: 316 SS, PVC or Brass
Electrodes: Carbon Graphite
Electrode plate: PVDF
Housing: Cast powder-coated aluminum
O-rings: EPDM
Calibration Accuracy: 1% of full scale
| Table 1-Flow Ranges (GPM) | ||
| Pipe Size | Min. Flow | Max. Flow |
| 1" | 0.54 | 54 |
| 1-1/2" | 1.3 | 127 |
| 2" | 2.0 | 209 |
| 3" | 4.5 | 461 |
| 4" | 8.0 | 794 |
| 6" | 18.0 | 1800 |
| 8" | 31.0 | 3120 |
| Model | Material & Style | Size code for pipe size | ||||
| 1" | 1-1/2" | 2" | 3" | 4" | ||
| EF81T-P | PVC/male stub | 100 | 150 | 200 | * | * |
| EF81TC-B | Bronze/female sweat (copper tube) | 100 | 150 | 200 | 300 | 040 |
| EF81T-B | Bronze/female thread | 100 | 150 | 200 | 300 | 040 |
| EF81T-S | 304 SS/female thread | 100 | 150 | 200 | - | - |
| EF81T-C | Carb-Steel female thread | 100 | 150 | 200 | - | - |
| EF81T-CP | CPVC/male stub ends | 100 | 150 | 200 | - | - |
| Option 14 | All 316 SS | Consult Clark | ||||
| *Use EF82S-P with Option-16- see Table 3 | ||||||
| Model | Material & Style | Size code for pipe size | |||
| 3" | 4" | 6" | 8" | ||
| EF82S-P | **PVC | 300 | 400 | 600 | 800 |
| EF82S-F | Ductile Iron | 300 | 400 | 600 | 800 |
| EF82S-Y | Polypro | 300 | 400 | 600 | 800 |
| EF83S-B | Bronze | 300 | 400 | - | - |
| Option 16 | Saddle fitting installed on 16" long pipe stub (PVC only) | ||||
| **PVC saddles are supplied with Buna-N 0-rings only. For chemical service the o-ring must be removed and the saddle must be glued onto the pipe with PVC cement used as directed. | |||||
| Model | Material & Style | Size code for pipe size | |||
| 3" | 4" | 6" | 8" | ||
| EF82W-B | Bronze | 300 | 400 | 600 | 800 |
| EF82W-C | Carbon Steel | 300 | 400 | 600 | 800 |
| EF82W-S | 316 SS | 300 | 400 | 600 | 800 |
These modules mount directly in a meter enclosure (supplied installed) or remote mount on
a wall or in a panel.
FT420: FT420 indicating transmitter features rate and total display and 4-20 mA output. It also provides scaled pulse output for solenoid driven pump pacing, a pulse pass through for use with a PLC, and a programable flow rate setpoint. Power: 4-20 mA Loop Powered, 12-32 VDC A055: 4-20 mA output module is easily scaled using rotary switches to enter the desired top end of range. Power: 12-36 VDC PD10: Output module is easily scaled using rotary switches to enter the desired number of pulses from paddle sensor to equal one pulse output to pump. Power: 6-18 VDC |
 FT420- Meter Mount
FT420- Wall Mount
A055 Meter Mount
PD10 |
| PLEASE CALL 1-800-253-2497 TO ORDER THESE ITEMS | |||
| Model | Material | Output | Fitting |
| EX81 | B = Brass | - = Pulse Output (standard) | Select Model & Size Code From Tables 2, 3, or 4 |
| IEX82 | S = 316 SS | FT420M= FT420 (mounted in meter enclosure) | |
| *FT420W= FT420 (remote wall mounting) | |||
| A055M= A055 (mounted in meter enclosure) | |||
| *A055W= A055 (remote wall mounting) | |||
| PD10M= PD10 (mounted in meter enclosure) | |||
| PD10W= PD10 (remote wall mounting, requires Option 07) | |||
| Options | |||
| 14= 316 SS Fitting | |||
| 16= See Table 3 | |||
| 125= Viton® O-rings | |||
| 40= Submersible (consult Clark) | |||
| 07 = Seametrics connector (to connect wall mount PD10 to meter) | |||
| *Supplied with brackets for wall mounting | |||
