Alco Controls
Alco Controls
Alco Controls
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Pressure Transmitter Series PT4<br />
PT4 Pressure Transmitters convert a pressure<br />
into a linear electrical output signal.<br />
Features<br />
• Pressure sensitive piezo-based cell with strong<br />
primary output signal for precise and noiseless<br />
operation<br />
• Sealed gauge absolute pressure reference<br />
principle provides the regulation accuracy<br />
independent from atmospheric pressure<br />
variation<br />
• Vibration, shock and pulsation resistant<br />
• Protection class IP 65<br />
• Compact dimensions<br />
• Output signal 4 to 20 mA<br />
• Calibrated for specific temperature and<br />
pressure ranges to fulfill application demands<br />
in airconditioning and refrigeration systems<br />
• Variable supply voltage<br />
• CE-mark under EC EMC-Directive<br />
• Standard pressure ranges compatible with<br />
former PT3 ALCO pressure transmitters<br />
Options<br />
• Other pressure ranges and calibrations<br />
PT4-xxS<br />
Standards:<br />
• per EMC Directive<br />
PT4-Lxx<br />
• Underwriter Laboratories<br />
UL LISTED SDFY2/SDFY8.E258370<br />
Selection Chart Transmitters<br />
Type Part No. Output Pressure Max. working Pressure<br />
signal range pressure PS Connection<br />
(bar)<br />
(bar)<br />
PT4-07S 802 320 -0.8 ... 7 25<br />
7/16” -20 UNF<br />
PT4-18S 802 322 4 ... 20 mA 0 ... 18 33<br />
(with schrader<br />
PT4-30S 802 324 0 ... 30 33<br />
valve opener)<br />
PT4-50S 802 326 0 ... 50 50<br />
Cable Assemblies<br />
Type Part No. Temperature Cable Leads<br />
range<br />
length<br />
C° (m)<br />
PT4-L15 804 593 1.5<br />
PT4-L30 804 594 -50 ... +80 °C 3.0 2 x 0,34 mm 2<br />
PT4-L60 804 595 6.0<br />
PT4-Lxx<br />
A2.5.1/0706/E<br />
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