STR550 (obsolete product)

Indicator - Panel meter


Indicator / interceptor / Quick viewer, format 96 x 48 (1/8 DIN) with integrated Tracker function.
Front panel with IP54 silicon membrane keypad with 4 buttons, 128x64 LCD monochromatic display with settable backlight colour. Display of process variables, parameters, traces, and Bar Graphs in horizontal (96x48) or vertical (48x96) modes.
This device has a universal analogue input (RTD/TC/standard linear inputs) for the acquisition of process signals even with fast passage (sampling up to 242Hz/4.2 ms).

As with most Pixsys instruments, the STR550 contains all the most popular hardware solutions in a single product code: 2 relays that can be used in a range of alarm modes, two linear outputs 0...10Volt and 0/4...20mA for the fast retransmission of process variables, a Slave RS485 Modbus RTU serial for interfacing with the PLC networks, OP, SCADA/PC Panel. The product also includes 2 configurable digital inputs and a 24Vdc/30mA power supply for Loop Powered external sensors.
The instrument manages functions such as saving maximum peak, minimum peak, and peak-peak values, the Totalizer function, typical of flow controllers, and the Sum for weighing systems.
For configuration, in addition to the usual Pixsys tools (Memory Card and Labsoftview software), the product includes a channel with RFid (NFC) wireless technology, which can be used with the new Pixsys RF-Programmer devices.

The device has a power supply range of 24 to 230 V AC/DC.

User friendly, multimedia support and traceability

For the entire range of Pixsys products we provide technical support for installation, programming and operation via our online forum and via Skype.

The interface of the STR550 indicator ensures that the product is easy to use and that the user is also supported by auxiliaries for programming such as MEMORY-CARD or the LABSOFTVIEW programming software.

Programming tutorial videos are available on our youtube channel.

As for the entire range of PIXSYS products, thanks to the QR code the traceability of the product is guaranteed for its entire life cycle; the information and documentation online can be also be accessed by reading the QR CODE that directs your mobile device to the product's technical specifications and verifies its warranty conditions.

<p>Vertical bargraph str550 </p>

Vertical bargraph

<p>Horizontal bargraph indicator str550 </p>

Horizontal bargraph

Indicator tutorial - English

Ordering codes

1 Analogue input + 2 Relays + 1 Out 0...10V + 1 Out 0/4...20mA + RS485 Modbus RTU /Slave

Main features

96x48 (Front panel) x 48 mm / or 1/8Din
Power supply
24...230VAC/DC ±10% 50/60 Hz (galvanical isolation 2500V)
6 VA
LCD (8 backlight colors)
Operating conditions
Temperature 0-45 °C, humidity 35..95 uR% (non condensing)
Box: Polycarbonate V0
Approx. 165 g
Front panel:IP54 (IP65 with gasket) - Box and Terminal blocks:IP20
Quick set-up options
Software LABSOFTVIEW and/or Memorycard
extractable terminal blocks and spring locking


1 Analogue
Res.16 bit, Selectable for TC type K, S, R, J, T, E, N, B (automatic compensation of the cold junction 0..50 °C, ± 0,2% F.S. ± 1 Digit F.S.), thermoresistances PT100, PT500, PT1000, Ni100, PTC1K, NTC10K (β 3435K), process signals 0-10 V(54000 points), 0/4-20mA(40000 points), 0-60 mV (16000 points), Potentiometer 6 KΩ, 150 KΩ (50000 points) Customizable linear input (max 16 steps)
2 Digital
PNP inputs programmable for Run / Hold / Tare-Zero / Alarms rearmament / Peaks reset/ Totalizer reset / Activate-Reset Sum / Parameters-Setpoints Lock
Sampling time
4,1 ms (Frequency from 4,12 Hz to 242 Hz)


2 Relays
2A - 250VAC (resistive charge)
2 analogue
1 output 0...10V (60000 points) - 1 output 0/4...20mA (60000 points)
1 Auxiliary
24 VDC - 30mA for external sensors supply (loop-powered)
Serial communication
RS485 Modbus RTU - Slave (1200...115200 Baud) galvanically isolated from Power supply/Inputs/Outputs

Software features

Alarms regulation
ON - OFF with hysteresis
Alarm mode
Absolute / Threshold, Band with instantaneous/delayed/retentive/by digital input activation, Sensor failure / Activation by serial line
Sum Function
By digital input or by keyboard it is possible to sum different process measurements over time
Totalizer Function
Visualisation of instant process value and total value since last reset
Trend visualization
Trend visualisation with selectable time basis 1 to 3600s
Analogue retransmission
Process values / Setpoints
Digital transmission via RS485
Process values / Setpoint / Parameters
Latch-on function
Semi-automatic setting of limits/ calibration values for analogue input
Text menus
automatic backlight colors change in case of alarms
Measure unit visualization
Selection of different measure units

User Manual - Video - Application Notes - Datasheet

Video STR550
Video Youtube
Manuale - User Manual STR550 2300.10.169-RevB
English / Italiano
File modello/model 3D (PDF 3D - .STP)
English / Italiano
PDF 3D - STEP (.stp)


Size and Installation