| 接口尺寸： | G 1 Hygienic DIN 11851 Tri-clamp Clamp DIN 32676（mm） | 加工定制： | 是 |
| 防護(hù)等級(jí)： | IP65 | 測(cè)量范圍： | 0-25BAR（kPa） |
| 類型： | WIKA衛(wèi)生型帶數(shù)顯壓力開關(guān)PSA-31 衛(wèi)生型壓力開關(guān)IO-KINK帶數(shù)顯頭 | 防爆等級(jí)： | ATEX |
| 型號(hào)： | PSA-31 | 測(cè)量介質(zhì)： | 液體 |
| 精度等級(jí)： | 1 | 品牌： | WIKA/威卡 |
| 輸出信號(hào)： | 4-20（mA） | 電源電壓： | 10-30（V） |
WIKA PSA-31 衛(wèi)生型 帶數(shù)字顯示 壓力開關(guān)
IO-KINK 醫(yī)藥衛(wèi)生用
Electronic pressure switch with display for sanitary applications
Model PSA-31
Pressure switch model PSA-31
Applications
Food and beverage industry
Pharmaceutical industry
Filling and packaging machinery
Sanitary applications
Special features
Easily-readable, robust display
Intuitive and fast setup
Easy and flexible mounting configurations
Description
Award-winning in design and functionality
The successful design and the excellent functionality of the WIKA switch family were already confirmed by winning the "iF product design award 2009" for the PSD-30 pressure switch.
The robust LED display has been designed using 9 mm high characters （the largest possible） and with a slight incline in order to make reading the pressure as easy as possible from a long way off. A 14-segment display has been used, since it represents text very well.
The 3-key operation makes simple, intuitive menu navigation possible, with no need for additional assistance. The menu navigation is designed in accordance with the latest VDMA standard. The VDMA standard for fluid sensors （24574-1, part 1 - pressure switches） has the aim of simplifying the use of pressure switches by standardising menu navigation and display.
The control keys have been designed as large as possible and are arranged ergonomically to ensure fast and easy adjustments. Operation without any additional assistance is made easier through the tactile feedback.
Customised installation
The installation of the PSA-31 can be flexibly adapted to the individual mounting situation. Due to the almost unlimited rotation of the display and case by more than 300°, the display can be adjusted independently of the electrical connection. The display can thus always be aligned to face the operator, and the M12 x 1 connection positioned to suit the desired cable routing.
High quality
During development of the WIKA switch family a high value was placed on a robust design and the selection of appropriate materials suited to machine building applications. For this reason the case and the threaded connection of the electrical connector are made from stainless steel. Overwinding or tearing off the connector is therefore virtually impossible.
Measuring ranges
Overpressure limit
2 times
Display
14-segment LED, red, 4-digit, 9 mm character size
Display can be turned electronically through 180°
Update
100, 200, 500, 1000 ms （adjustable）
Output signal
Switching output 1 Switching output 2 Analogue signal
PNP - 4 ... 20 mA
PNP - DC 0 ... 10 V
PNP PNP 4 ... 20 mA
PNP PNP DC 0 ... 10 V
Alternatively also available with an NPN instead of a PNP switching output.
With the IO-Link option, switching output 1 is always PNP.
Zero offset adjustment
maximum 3 % of span
Analogue signal
Current output load: ≤ 0.5 kΩ
Voltage output load: > 10 kΩ
Settling time: 3 ms
Switching output
Switch point 1 and switch point 2 are individually adjustable
Normally-open and normally-closed function: freely adjustable
Window and hysteresis function: freely adjustable
Switching voltage: Power supply - 1 V
Switching current: maximum 250 mA
maximum 100 mA with IO-Link option
Settling time: ≤ 10 ms
Voltage supply
Power supply
DC 15 ... 35 V
Current consumption
maximum 100 mA
Total current consumption
maximum 600 mA incl. switching current
maximum 500 mA incl. switching current （with IO-Link option）
Accuracy
Analogue signal
≤ ± 1.0 % of span
Including non-linearity, hysteresis, zero-point and full scale deviations （corresponds to measured error per IEC 61298-2）. Calibrated in vertical mounting position with process connection facing downwards.
Non-linearity
≤ ± 0.5 % of span BFSL （per IEC 61298-2）
Adjustment accuracy of the switch points
≤ ± 0.5 % of span
Display
≤ ± 1.0 % of span ± 1 digit
Long-term drift
≤ ± 0.2 % of span （per IEC 61298-2）
Temperature coefficients depending on the process connection
Clamp DIN 32676, DN 32
Typical temperature coefficient of zero point
0 ... 20 °C 0.75 % of span / 10 K
20 ... 80 °C 0.45 % of span / 10 K
Typical temperature coefficient of span
0 ... 80 °C 0.1 % of span / 10 K
All other process connections
Typical temperature coefficient of zero point
0 ... 20 °C 0.7 % of span / 10 K
20 ... 80 °C 0.2 % of span / 10 K
Typical temperature coefficient of span
0 ... 80 °C 0.1 % of span / 10 K
Reference conditions
Temperature: 15 ... 25 °C
Atmospheric pressure: 950 ... 1050 mbar
Humidity: 45 ... 75 % relative
Nominal position: Process connection lower mount
Power supply: DC 24 V
Load: see "Output signal"
Operating conditions
Temperatures and humidity
Ambient temperature: -20 ... +80 °C
Storage temperature: -20 ... +80 °C
Rated temperature range: 0 ... 80 °C
Permissible humidity: 45 ... 75 % relative
Ingress protection
IP 65 and IP 67
The stated ingress protection （per IEC 60529） only applies when plugged in using mating connectors that have the appropriate ingress protection.
Medium temperature depending on the process connection
G1 hygienic
-20 ... +125 °C （+150 °C possible for up to 60 minutes）
All other process connections
-20 ... +100 °C （+135 °C possible for up to 60 minutes）
Vibration resistance
10 g （IEC 60068-2-27, vibration under resonance）
Shock resistance
50 g （per IEC 60068-2-6, mechanical shock）
Process connections
Standard Thread
Hygienic G 1, flush 1） 2）
Grooved union nut DIN 11851 DN 40
with conical coupling 3） DN 50
Tri-clamp 1 1/2"
2"
Clamp DIN 32676 DN 32
DN40
DN 50
1） Sealing from EPDM or FKM
2） Suitable for WIKA adapter system model 910.61; see data sheet AC 09.20
3） For a 3-A conform connection of process connections with milk thread fittings per DIN 11851, profile sealings from SKS Komponenten BV or Kieselmann GmbH have to be used.
Electrical connections
Connections
Circular connector M12 x 1, 4-pin
Circular connector M12 x 1, 5-pin 1）
1） Only for version with two switching outputs and analogue signal
Electrical safety
Overvoltage protection: DC 40 V
Short-circuit resistance: S+ / SP1 / SP2 vs. U
Reverse polarity protection: U+ vs. U
Insulation voltage: DC 500 V
Connection diagram
Materials
Wetted parts
Process connection: Stainless steel 1.4435 / 316L
Non-wetted parts
Case: Stainless steel 304
Keyboard TPE-E
Display window: PC
Display head: PC+ABS-Blend
Pressure transmission medium
KN59 Neobee® M-20, FDA conform
Approvals, directives and certificates
Certificates
3-A （74-03）
This instrument is 3-A marked based on a third party verification for conformance to the 3-A standard 74-03.
CE conformity
This instrument is a pressure accessory as defined by the
97/23/EC pressure equipment directive.
EMC directive 2004/108/EC, EN 61326 emission （group 1,
class B） and interference immunity （industrial application）
RoHS conformity
Yes
Available documentation and certificates
Material certificate per EN 10204-3.1
Confirmation of the class and indication accuracy
FDA conformity
Manufacturer's declaration regarding EU regulation 1935/2004 EC
Others on request
Dimensions in mm
Pressure switch
