×

Sigma Hellas Ltd contact information

If you still have problems, please let us know, by sending an email. Thank you!

Working Hours

Mon - Fri: 08:00 - 16:00 (EET)
Sat: Closed
Sun: Closed

FORGOT YOUR DETAILS?

Flow-Liquids

Flow measuring of liquids is needed in many industries and in certain applications accurate flow measurement is so important that it can make the difference between profit and loss. Flow is classified into open channel flow and closed conduit flow. Most devices measure flow indirectly and are commonly divided into those that sense or measure velocity and those that measure pressure or head.

The sensors that Sigma offers are from the first category and are further subdivided in to impeller, ultrasonic and calorimetric.

IMPELLER FLOW SENSORS
Low-Flow Paddle Wheel Sensors

These versatile impeller flowmeters are availalble in 3/8", 1/2”, 3/4”, and 1" nominal pipe sizes with female NPT threads (SAE optional). They employ jewel bearings to allow for very low minimum flow rates and superior life.

  • Accurate at low flows
  • Simple and durable
  • Compatible with a variety of chemicals
  • Visual flow monitoring
  • Inexpensive
  • Six blade impeller
  • For small pipe sizes (3/8” to 1”)
  • Flow Rates from 0.27-18.9 Lit/min (0.07-5 Gal/min) to 0.5-40 Lit/min (1.9-150 Gal/min)

 

Flow Sensors with PVC Tee

The flow sensor features a six bladed impeller design with a proprietary, non magnetic sensing mechanism. The forward swept impeller shape provides higher, more constant torque than four bladed impeller designs and is less prone to be fouled by water borne debris. The forward curved shape coupled with the absence of magnetic drag provides improved operation and repeatability even at lower rates. This is more important where the impeller may exposed to metallic or rust particles found in steel or iron pipes. As liquid flow turns the impeller, a low impedance 8VDC square wave signal is transmitted with a frequency proportional to the flow rate. This signal can travel up to 600m (2000') between the sensor and the display unit without the need for amplification. All the sensors are supplied with 20' of Belden type 9320  (two conductor shield) cable and can be fitted in Tees from 1/2" up to 2" diameter.

100/200 series Paddle Wheel Flow Sensors

The 100/200 series of Paddle Wheel Flow Sensors are adjustable depth insertion paddlewheels that come in brass or 316 stainless models to fit 3” to 48” pipe. Installation fittings are standard 1-1/2" (101/201) NPT. Fittings such as saddles and weldolets may be purchased either locally or from us.

Wide flow range
Single moving part
Six bladed impeller
Rugged cast aluminum housing
Removable jewel bearings & rotor
Easy depth adjustable 3” to 48” pipe sizes

MAGMETER FLOW SENSORS
MAGMETER FLOW SENSOR EX80

Magmeters have the same form factor as paddle wheel sensors but replace the moving paddle wheel with a magnetic induction circuit. The absence of any moving parts makes these sensors perfect for dirty environments where debris would foul a paddle wheel sensor. As long as there is a minimum conductivity of 20 µS/cm the magmeter will work.

  • No moving parts to wear out
  • Dedicated fittings for simplicity
  • Retainer clip automatically sets correct depth
  • Rugged cast aluminum housing
  • Meter extends only about 1/8 of pipe diameter, minimizing potential for clogging with debris
  • Easy to install and easy to maintain
  • Pipe sizes 1" to 12"
  • Flow rate 0.28 - 20 ft/sec (0.08 - 6.09 m/sec)

 

MAGMETER FLOW SENSOR EX100/200

Magmeters have the same form factor as paddle wheel sensors but replace the moving paddle wheel with a magnetic induction circuit. The absence of any moving parts makes these sensors perfect for dirty environments where debris would foul a paddle wheel sensor. As long as there is a minimum conductivity of 20 µS/cm the magmeter will work.

  • Low-flow performance and accuracy superior to any mechanical flow sensor
  • No moving parts to wear out
  • Dedicated fittings for simplicity
  • Adjustable depth
  • Reverse flow output available
  • Easy to install and easy to maintain
  • Pipe size 3” to 48” (up to 72” optional)
  • Flow rate 0.28 - 20 ft/sec (0.08 - 6.09 m/sec)
Ultrasonic stand-alone inline sensor - 7000 & 8000 series
for flow rate measuring systemrobust ultrasonic flow rate sensors that offer:-

  • Flow rate, totalizing, and medium temperature indication suited for water up to a flow rate of 100 l/minute
  • Binary, analogue and pulse outputs for signal processing
  • R 1/2 & R 3/4 process connection via adapter fitting

SPECIFICATIONS
Ultrasonic flow rate sensor, DC PNP/NPN, Plug and socket, 4-digit alphanumeric display
Application: water; flow monitoring / temperature monitoring

Operating voltage:       20...28 V DC
Electrical design:          DC PNP/NPN
Output:OUT1:            normally open / closed programmable or pulse
OUT2:            normally open / closed programmable or analogue (4...20 mA / 0...10 V,
scaleable)
Current rating:            2 x 250 mA

Flow monitoring: 

Measuring range:        model 7000: 0...50 l/min; 0,0...3,0 m³/h
model 8000: 0..100 l/min; 0,01..6,0 m³/h

Temperature monitoring:

Temperature range:    5,0...80,0 °C
Pressure rating:          16 bar
Electrical Connection:  M12 connector
Process connection:    model 7000: G3/4, model 8000: G1
Housing material:        housing: AlMgSi0.5 anodised; sealing: Viton; connector housing: brass Optalloy-
plated; PA 6.6; cover film: polyamide
Sensor material:         gunmetal (2.1096.01); stainless steel (316L); PPR (Hostalen); Viton; PES
(Ultrason 2010); Centellen 200
Medium temp:           5...80 °C
Operating temp:        5...60 °C
Protection:                IP 67, III
Display:                     Display unit: 4 LED green (l/min, m³/h, m³, °C); Function display: 2 LED yellow;
Switching status: 2 LED yellow; Measured values: 4-digit alphanumeric display;
Programming: 4-digit alphanumeric display

Accessories (to be ordered separately):Socket, adapter fittings G 3/4~R 1/2, G1 ~ R 1/2, G1 ~ R3/4

 

 

 

SI5 series flow sensors for fluids and gases.The SI flow sensor provides a SPST relay output. The sensor can be used in a variety of applications that require fluid or gas monitoring. The sensor’s 316 stainless steel sensor tip is inserted directly into the flow stream. The SI features a programmable microprocessor-based pushbutton set up with automatic high- and low-teach function.

 

SI1 series flow transmitters for fluids and gases

The SI flow transmitters provide a 4-20 mA analogue output via an industry standard Micro DC connector. The SI's sensor tip is inserted directly into the flow stream. The microprocessor-based pushbutton set up features "teach" function. A bar graph display provides visual indication of operating status.

SI2 series flow sensors for sanitary applications.

Sanitary flow sensors are solid state sensors with no moving parts that can break and contaminate the process, which are designed to monitor flow in food, beverage and other sanitary applications and meet 3A, FDA and EHEDG requirements. These sensors use a versatile adapter system that allows the sensor to fit multiple process connection sizes.

SF series two piece flow system for remote indication & control.

The SF Series flow sensor uses a sensor probe and a control monitor for remote monitoring of fluids and gases. Control monitors feature potentiometer adjustable set point with bar graph display. Two models are available: DC switching output and AC relay output. The sensor probes use a unique modular adapter system that allows various mounting options.

 

Explosion proof  SF series flow sensor with 2 piece design for remote indication and control of flow.

TOP