The pressure transmitter PiezoSwitch is well suited for measuring absolut and relativ pressure of fluids and gases in pipelines with temperature ranges from -40°C bis 125°C. Two available switch outputs enable the switching functions. The flush-mounted processconnection PZM-type with o-ring-sealing and stainless steel diaphragm is certified EHEDG Type EL-ASEPTIC CLASS 1. It is ideal for measurements with highest hygienic demands and prescriptions. The PZM-Type connection comes with a wide range of adapters and reduces sustainably the cost of operation.
For applications without any elastomer-gaskets the metallicaly sealing and adjustable version K3 can be used. The housing of the PiezoSwitch is complete of hygienic design. The pressure transmitter is resistant against overload of pressure and temperature and against CIP- and SIP applications. The sensor measuring range of the piezoresistive and vacuum-tight sensor with stainless steel diaphragm is from -1/0…1bar up to -1/0…30bar.
Features:
- Signaloutput 4...20mA, 2-L
- UP to 2 PNP-Switchoutputs, 24V DC, max. 50mA, with indication
- LED-Display to show actual measured value
- simple operation with 3 buttons only: menu supported configuration of measuring range and switchpoints directly on the unit
- Measuring ranges from -1/0...30bar, free programmable, with TurnDown 4
- Process connection: G1" with sealing conus, with unionnut, without elastomers, adjustable. Alternativly EHEDG EL-ASEPTIC certified modular system type PZM with more than 8 different process adapters and welding sockets
Specification:
General details | |||||||||||
Device type / measuring principle | PiezoSwitch PS / piezoresistive | ||||||||||
Input | |||||||||||
Measuring ranges [bar] | Relative | -1/0...1 | -1/0...2,5 | -1/0...5 | -1/0...10 | -1/0...30 | |||||
Absolute | 0...1 | 0...2,5 | 0...5 | 0...10 | 0...30 | ||||||
Overload protection | 3 | 8 | 15 | 30 | 90 | ||||||
Setting the measuring ranges | with 3 keys within the transmitter | ||||||||||
Setting ranges | Measuring range begin | zero | : 0.....75% | of the sensor’s nominal measuring span | |||||||
Measuring span | span | : 25...100% of the sensor’s nominal measuring span | |||||||||
Turndown (TD) | : 4 | ||||||||||
Burst pressure DIN16086 | ≥ 4-fold nominal pressure range | ||||||||||
Output | |||||||||||
Output signal | 2-wire: 4...20mA | ||||||||||
Fault signal | 22mA | ||||||||||
Current limitation | 21mA | ||||||||||
Signal range | 3,8...20,5mA acc. Namur NE43 | ||||||||||
Switch output | 2x PNP, max. 50mA | ||||||||||
Measuring accuracy | |||||||||||
Reference conditions | acc. DIN IEC 770 | ||||||||||
Linearity, hysteresis and repeatability as per the limit point method | ≤ ± 0,5% of the sensor’s nominal measuring range | ||||||||||
DIN IEC 770 | |||||||||||
Activation time | < 2s (the device will carry out a self-test) | ||||||||||
Setting time | < 1s | ||||||||||
Long-time drift | ≤ 0,2% of the span per year | ||||||||||
Thermal hysteresis | ≤ ± 0,2% of the sensor’s nominal measuring range / 10K (+20...+80°C) from 10...30bar | ||||||||||
≤ ± 0,3% of the sensor’s nominal measuring range | / 10K (+20...+80°C) from 1...5bar | ||||||||||
Conditions of use | |||||||||||
Installation position / calibration position | Any position / standing vertically | ||||||||||
Medium temperature | -40...+125°C / 140°C 1 h | ||||||||||
Ambient storage temperature | -10...+85°C (below -20°C danger of cable breakage) | ||||||||||
Protection class acc. to EN60529 | IP 67 and IP 69K | ||||||||||
Electromagnetic compatibility | acc. to EN 61326-1 | ||||||||||
Construction | |||||||||||
Electrical connection | Round plug-in connector M12x1, 5-pole, nickel-plated brass (stainless steel available on request) | ||||||||||
Process connection | - Membrane, flush-welded, CrNiSt | ||||||||||
- EHEDG Typ EL-ASEPTIC CLASS 1 certified connection system PZM with press screw M38x1.5 and elastomer sealing | |||||||||||
- Process seal EPM (FDA-conform) (range -20...+150°C) | |||||||||||
- G1“ with metallic sealing conus and union nut, adjustable (K3) | |||||||||||
Materials | - Field housing / lid: | CrNiSt 1.4301 (304) | |||||||||
- Housing seal: | FPM (Viton®) | ||||||||||
- Pressure compensation element: | Polyamide | ||||||||||
- Process connection / connection adapter: | CrNiSt 1.4404 (316L) | ||||||||||
- Process membrane: | CrNiSt 1.4435/1.4404 (316L) | ||||||||||
Filling fluid | Silicon oil (FDA) | ||||||||||
Display and operation | |||||||||||
Display | 4 units 7-segment display incl. decimal point, 2x status LED for switch point | ||||||||||
Operation | 3-key concept | ||||||||||
Auxiliary energy resources | |||||||||||
Power supply / burden | 24...30V DC, max. burden: 600 Ω | ||||||||||
Accessories PiezoSwitch PS | |||||||||||
Certificates | Declaration of conformity | ||||||||||
Material certificates acc. EN 10204 (on request) | |||||||||||
EHEDG-Certifikate (on request) | |||||||||||
Download Data Sheet: Flush-mounted Pressure Transmitter and Switch PiezoSwitchPS Type
Ref: Hengesbach.com
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