High-Pressure Flow Sensor SS 20.60
High-pressure flow sensor for measurements of flow velocities and flow rate / 
resistant against pressure up to 16 bar / microcontroller measurement converter / easy construction / digital output / optionally with Fieldbus interface

With this high-pressure flow sensor you will be able to measure flow velocities and flow rates of several gases. The high-pressure flow sensor can be delivered in several types. A wide measuring range will be offered through the high pressure flow sensor SS 20.60. Via a temperature range of -20 ºC ... + 120 ºC it is possible to measure flow velocities of 0 ... 200 m/s during a pressure from up to 16 bar. The aerodynamic sensor probe isn't built of movable components. The tolerance of ± 5 ºC will apologize inaccuracy. The sensor is also free of maintenance. The sensor determines the thermal resistance and the flow of volume will convert the measured heat amount into the flow velocity. This measurement principle makes a seperately determination of relative pressure and relative temperature for measurements of norm velocity no more necessary. A digital output makes it possible to connect the high-pressure flow sensor with energy management systems. There are several field of application for the high-pressure flow sensor SS 20.60. For example combustion control, monitoring exhaust air and measurement of air consumption can be done. The high-pressure flow sensor is a great allrounder. For further information about the high-pressure flow sensor SS 20.60, please read the following technical data or call our Hotline: +44 (0)2380 987030. Our engineers and technicians will gladly advise you with the Universal air flow sensor SS 20.250 or all other products in the terms of regulation and control, scales and balances of PCE Instruments.

- High temperature gradient
- Electric temperature compensation
- Measuring dynamic 1:1000
- Resistant against pressure up to 16 bar

- Low weight
- Hard sensor probe
- LED display 
- With Fieldbus or PROFIBUS interface 

Technical data about high pressure air-flow sensor 

Measure variable  

Proper speed wN based in standard conditions with 20 °C and 1013.25 hPa, 

Measurement medium 

Air or nitrogen, further gasses on order 

Measuring range air flow wN 

0…1/ 2.5/ 10/ 20/ 40/ 60/ 120/ 160/ 200 m/s 

Lower detection threshold wN

0.2 m/s

Lower evaluation limit

0.1 m/s

Measuring accuracy 

 ± (3 % from measuring value + [0.4 % from measuring range])

Reproducability

 ± 0.5 % from measuring value 

Response time t90 wN

3 sec. (jump from 0 to 5 m/s air) 

Operation temperature
- Compact sensors
- Sensors
- Electric

-20 ... +85 °C
-20 ... +120 °C
 0 ... +60 °C

Storage temperature

-20 ... +85 °C

Humidity

0 ... 95 % RH

Operating pressure
- athmospheric
- overpressure

700 ... 1300 hPa
0 ... 16 bar (compact sensor only)

Temperature gradient

8 K/min bei wN = 5 m/s

Break time

6 s bei Temperatursprung
ΔtAir = 40 K bei wN = 5 m/s

Temperature dependence

compensating in operating temperature range

Pressure dependence 

independent from pressure of the medium

Zero point correction

press-related flow curve adjustments

Voltage supply

24 V DC ±20 %

Medium, environment 

Non-condensing (up to 95 % RH)

Operation pressure 

Atmospheric (700…1300 hPa) 

Display

Duo LED green/red 

Voltage Supply  

24 V AC/DC ± 10 %, max. 100 mA 

current consumption 
- standard sensor

- FB sensors

75 mA typ. at wN = 0 m/s
140 mA typ. at wN = 200 m/s
250 mA typ. at wN = 160 m/s

inrush current 
- standard sensor
- FB-Fühler 

160 mA for max. 5 s
270 mA for max. 5 s

Settling time

about 10 s after switching on 

Electrical connection standard sensor

Electrical connection   

Housing plug-in connector M12, 4 poles including connection cable with plug
4 x 0.34 m² 

Length of cable (standard) 

5 m 

Length of cable (allowed)
- Voltage output
- Current output
- Digital output

15 m
100 m
100 m

Analog output
- type voltage
- type current

Type can be selected upon ordering
0 ... 10 V
0 / 41) ... 20 mA

Load resistance (allowed)
- voltage output 
- current output

≥ 100 kΩ
≤ 400 Ω

Digital output 

Pulse output 
High-Level: ≥ UB - 3 V
Low-Level: ≤ 0,7 V
Load resistance: ≥ 2 kΩ

Frequency Digital output 
(choosable at order) 

0 ... 10 / 16 / 20 / 40 / 100 Hz
(depending on system)

Minimum impulse duration 

min. 1 / (2 x fmax)

1)This output type offers an error alarm (error current 2 mA)

Other specifications

- Casing
- Sensor pipe
- Sensor probe
- Sensor element

anodised aluminium
stainless steel X6 CrNiMoTi 1.4571
Thermoplast PPO/PA
platinum Resistor-Elements

Fixation

brass through bolt, pressure tight, movable, mounting threads G1/2 x 12

Installation tolerance

± 5 ° relatively to direction of flow

Installation position

arbitrary, vertical drop flow increases the lowest Measurement limit to wN = 2 m/s

Dimensions
- Casing Standard
- Casing Fieldbus
- Sensor probe
- Sensor pipe

67,3 mm x 56,5 mm (Ø x H)
67,3 mm x 103,5 mm (Ø x H)
8 mm x 15,2 mm x 12,5 mm (B x H x T)
15 mm (Ø)

Installation Length
- Compact sensors
- Installation sensors

120 / 180 / 250 / 400 mm optionally
190 mm , deposed by housing with 3 m connection cable

Weight

450 g max. (without cable)
800 g (SS 20.60 FB)

Protection class

IP 65 (housing)
IP 67 (sensor)

Fieldbus Device Type (optionally)

Norm

ISO / DIS 11 898
DeviceNet Specification Volume I + II

Electric connection 

8 pole screw connector on inside of the housing 
cable feeding via 3 cable bushings

Connection resistance

connection resistance (120 Ω, 0,25 W) is factory set off and can be enabled by a DIP-Switch or Software

Baud rate

125 / 250 / kbit/s, Defaultvalue 125 kbit/s, adjustable via DIP-switch or Software

Adress

0 ... 63, Defaultvallue Adress 63 (MAC ID 63), adjustable via DIP-switch or Software

Operation Type

Poll mode, Change of State (COS), cyclic

Processdata

32 bit, Volumeflow respectively Flowspeed selectable

Automatic threshold

High and low threshold for flow speed and volumeflow adjustable 

Warning Flag

signalling when values exceed the measuring  range

Alarm Flag 

Signalling a sensordefect

Status display 

Duo-LED shows state of fieldbuscommunication

PROFIBUS DP-Type (optionally)

Norm

PROFIBUS Norm
EN 50 170

Electric connection 

8 pole screw connector on inside of the housing 
cable feeding via 3 cable bushings

Connection resistance

connection resistance (390-220-390 Ω,) is factory set off and can be enabled by a 2-pole DIP-Switch or Software

Baud rate

9600 Bd - 12 MBd, setiing automatically by PROFIBUS-Master

Adress

0 ... 99, adjustable via BCD turn-switch 

Operation Type

"Data Exchange" with PROFIBUS DP-V0

Processdata

32 bit, Volumeflow respectively Flowspeed selectable

Automatic threshold

High and low threshold for flow speed and volumeflow adjustable 

Warning Flag

signalling when values exceed the measuring  range

Alarm Flag 

Signalling a sensordefect

Status display 

Duo-LED shows state of PROFIBUS-communication

Delivery content high-pressure flow sensor SS 20.60  

1 x high-pressure flow sensor (depends on type), 1 x manual description

Purchasable equipment for universal air flow sensor 

Welded sleeve (art. nr. 524916 (steel) or art. nr. 524882 (stainless steel) 

Through bolt made of stainless steel (art. nr. 511958) to 16 bar Overpressure, with protection of pressure  

Here you will find an overview of all the measuring instruments available at PCE Instruments.

Contact:
PCE Instruments UK Limited
Unit 11 Southpoint Business Park
Ensign Way, Southampton
United Kingdom, SO31 4RF
Phone: +44(0) 23 809 870 30
Fax: +44(0) 23 809 870 39

Contact:
PCE Americas Inc.
1201 Jupiter Park Drive, Suite 8
Jupiter 33458 FL
USA
Phone: +1-410-387-7703
Fax: +1-410-387-7714

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