Alco Controls - Grobelny

Technical Data
Supply Voltage Nominal 24 Vdc Sensor lifetime
A2.5.1/0604/E
Range (polarity protected) 8... 30 Vdc at full stroke at 25°C 5.000.000 cycles
Operating current max. 20 mA output Burst pressure >150 bar
Protection class acc. to EN 60529 IP65 Medium compatibility HFC, HCFC
Load resistance
R ≤ L
U - 8.0V
B
0.02A
not suitable for ammonia and
inflammable refrigerants!
Temperatures Materials
Operating ambient housing -40.....80 °C Housing cover, pressure connector, Stainless steel
Medium -50...135 °C diaphragm with medium contact 1.4435 / AISI 316L
Transportation and storage -40.....85 °C Vibration at 10 ... 2000 Hz max. 4 g
Accuracy Performance
Temperature range Total error*
PT4-07S -40 ... 0°C ≤ ± 1 % FS
0 ... +60°C ≤ ± 2 % FS
-40 ... +80°C typically ≤ ±2 % FS
PT4-18S -20 ... +20°C ≤ ± 1 % FS
-40 ... +60°C ≤ ± 2 % FS
-40 ... +80°C typically ≤ ±2 % FS
PT4-30S 0 ... +40°C ≤ ± 1 % FS
-20 ... +60°C ≤ ± 2 % FS
-40 ... +80°C typically ≤ ±2 % FS
PT4-50S 0 ... +40°C ≤ ± 1 % FS
-20 ... +60°C ≤ ± 2 % FS
-30 ... +80°C typically ≤ ±2 % FS
*) Total error includes non-linearity, hysteresis, repeatability as well as offset and span
drift due to the temperature changes.
Note: % FS is related to Percentage of Full sensor Scale.
Electrical connection
Pressure transmitters PT4 with current output (2-wire connection)
offer following advantages:
1. More suitable for signal transmission over long
distances
2. Higher immunity to electromagnetic interference
Note: Changing the length of the electrical connection
lead beyond 1.5 m can have a negative impact on electromagnetic
compatibility. Additional protection may be
required.
Electronic Controller
Part Supply, +24Vdc Signal, 4-20mA
PT4-xxS (Pressure transmitter) Pin (terminal) 3 Pin (terminal) 1
PT4-Lxx (Plug/Cable) Brown wire White wire
Former PT3 (Transmitter with fixed cable) Brown wire White wire
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