Description
Technical Description – PhaseGuard ST 40
In-Line Phase Switch for Turbidity
The PhaseGuard ST 40 measures the phase transitions for turbidity. Two models of the PhaseGuard cover the possible applications: Phase switch for turbidity (PhaseGuard ST 40 – S) and for very high turbidity (PhaseGuard ST 40 – H). The PhaseGuard ST 40 is equipped with an optimised universal measuring range in absorption percent. Simple configuration and communication via one of the available interfaces, from 4…20 mA current interfaces to bus systems, guarantee simple application and system integration. The PhaseGuard ST 40 comes in a new, fresh design with an integrated colour touchscreen display. This makes the PhaseGuard ST 40 easy to identify in the system. The status is displayed directly in the device at the measuring point. The security of the data on the new interfaces is guaranteed.
A Closer Look
Advantages
- In-Line Sensing – proven solution for phase detection through turbidity
- Real-Time Monitoring with very short response time
- Process Optimization & Control, CIP-Monitoring
- Permanent device monitoring in the background
- Extremely low maintenance e.g. due to seal-less design
- Cost efficiency & high reliability
- Coloured display and simple configuration directly on the device
- Simple configuration directly on the device and easy system integration
- Hygienic design according to EHEDG and compliant to Regulation (EC) No 1935/2004 on materials and articles intended to come into contact with
food - Swiss Engineering / Swiss Made
Typical Applications include:
- Monitoring and controlling of interfaces in beverages such as beer, fruit juices, etc.
- Optimization of beer / yeast separation steps
- Monitoring of clean in pipe processes (CIP), e.g. in the dairy industry
- Minimizing product losses and increasing yields
- Recognition of interfaces for product change over or product push-out
- Faster processing time due to better resolution of start-stop conditions
Specs at a Glance
| Measuring principal | Absorption |
| Wavelength | 870mm |
| Measuring range | 0..100% |
| Resolution | 0.5 % Absorption |
| Accuracy | +/-1% Absorption * |
| Response time | < 0.3 s at 0 Seconds Integration time (Step response -limit value switch) |
| Path length | 10 mm (Modell
PhaseGuard ST 40 S2XX – 0000) 5 mm (Modell PhaseGuard ST 40 H2XX – 8000) |
| Medium temperature | -10 … +100 °C
-10 … +85°C at ambient temperature 55°C -10 … +75°C at ambient temperature 60°C |
| Cleaning surroundings | CIP/SIP- compatible up to 120 °C @2h
-10 … +50 °C 0 … 100 % relative humidity |
| Medium pressure | Max. 1 MPa (10 bar) @100 °C |
| Pipe connections | Inline VARINLINE® – housing or compatible
DN 40 … DN 150, 1 1/2“… 6“ |
| Operating voltage | 24 VDC ± 10 % (Interface PoE according to standard) |
| Warm up time | < 3 min |
| Power consumption | Max. 3 W |
| Protection class | IP 66 |
| Dimensions | Ø 100.5 x 137 mm |
| Material | Housing: Stainless steel 1.4301 / AISI 304
Sensor head material: Stainless steel 1.4404 / AISI 316L Window material: Sapphire Touchscreen: Soda-Lime tempering glas |
| Weight | 1.5kg |
| Display | Display: 2.4“ with Touchscreen
Resolution: 320 x 240 Pixel |
| Interfaces | |
| LT (Standard) | 1 Current output 0/4 … 20 mA,
max. 700 Ohm, 1 digital input, 2 digital outputs |
| IO | 6 configurable inputs/outputs: – Max. 2 digital inputs: 5 … 28 VDC – Max. 4 digital outputs: High-Side Switch max. 20 mA – Max. 4 current outputs: 0/4 … 20 mA, max. 700 Ohm – Modbus RTU |
| PoE | Ethernet LAN connection with Power over Ethernet: – Ethernet according to 10/100BaseT
– POE according to 802.3af, Class 0 – Sigrist Web interface |
| Profibus | Profibus DP-V1 Slave |
| Profinet | Profinet IO, Conformity class B |
| * in reference to factory standard |
Sigrist Communication Software
Software for Sigrist devices of the Edge generation
Available upon request.