Series SF Sight Flow Transmitter

±2% FS Accuracy, 4 to 20 mA Output, Pressure up to 500 psig (34 bar)

The Series SF Sight Flow Transmitter is a Series of sight indicators which can display flow or contents of pipelines and provide an analog 4 to 20 mA signal proportional to the flow rate. It is available with a 316 SS or clear polycarbonate cover.

Calibration Option available under Accessories.

Product Applications

  • Cooling and lubrication circuits
  • HVAC systems
  • Aggressive chemical metering
  • Batching systems

Models & Ordering

Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

COVID-19 Update: Due to high customer demand, lead time on some products may be up to two weeks. While this is a developing health situation, we are working continuously to take the necessary measures to ensure that the products you need are available with minimal interruption.

Model Description Usually Ships* Price Code Order
Ships: Same Day
Price: $693.00
Sight flow transmitter, 316 stainless steel cover. Same Day* $693.00 N Order
Ships: Same Day
Price: $693.00
Sight flow transmitter, clear polycarbonate cover. Same Day* $693.00 N Order


Compatible liquids.
Wetted Materials:
316 SS shaft and case, Iglide® bearings, Buna-N seal and acetal copolymer, (polycarbonate cover on Model SF11).
Flow Range:
0.5 to 15 GPM (2 to 60 LPM).
±2% FS.
0.5% FS.
Temperature Limits:
20 to 225°F (-7 to 107°C).
Pressure Limits:
500 psig (34 bar) Model SF10, 200 psig (14 bar) Model SF11.
Response Time:
2 s to 90% (step change in flow rate).
Supply Voltage:
12 to 35 VDC.
4 to 20 mA.
Loop Resistance:
1150 Ω max.
Process Connection:
1/2" female NPT.
Electrical Connection:
Wire leads, 22 AWG x 9' (2.7 m).
Maximum Particle Size:
Agency Approvals:


  • Integrates tangential turbine technology with hermetically sealed circuitry to provide accurate flow measurement and control in the harshest environments
  • 2-wire loop-powered design transmits a 4 to 20 mA signal proportional to flow rate for remote flow monitoring
  • Clear polycarbonate viewing cover option for visible indication of flow
  • 316 SS cover offers added protection with pressure limit up to 500 psig (34 bar)
  • LED power indication, adjustable zero and span, polarity protection and over current limiting
  • Accurately measures flow in both directions and can be mounted in any orientation


Model Number Description Usually Ships* Price Code Order
NISTCAL-FL1 NIST traceable calibration certificate for variable area flowmeters. NOTE: EQUAL CERTS WILL BE CHARGED PER UNITS PURCHASED. Less Than 1 Week $268.00 N Order

Product Literature


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