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Universal I/F Converter; 4222; PR Electronics;

Universal I/F Converter

Techno Supply  »  Products  »  PR Electronics  »  Universal I/F Converter
Universal I/F Converter
Universal I/F Converter
Key features

Input for RTD, TC, Ohm, potentiometer, mA and V
Frequency output NPN, PNP and TTL
Generates frequencies from 0.001...25000 Hz
2-wire supply > 16 V
Universal AC or DC supply


Programmable via detachable display front (4501), process calibration, signal simulation, password protection, error diagnostics and selection of help text in several languages.

Linearized, electronic temperature measurement with RTD or TC sensor.
Conversion of linear resistance variation to a frequency signal, e.g. from solenoids and butterfly valves or linear movements with attached potentiometer.
Power supply and signal isolator for 2-wire transmitters.
Process control by way of a frequency signal transmitted to e.g. a PLC or a process computer.
Galvanic separation and conversion of analog signals to frequency signals.


When 4222 is used in combination with the 4501 display / programming front, all operational parameters can be modified to suit any application. As the 4222 is designed with electronic hardware switches, it is not necessary to open the device for setting of DIP switches.

A green front LED indicates normal operation.

Continuous check of vital stored data for safety reasons.

3-port 2.3 kVAC galvanic isolation.


Environmental Conditions

Specifications range -20°C to +60°C

Calibration temperature 20...28°C

Relative humidity < 95% RH (non-cond.)

Protection degree IP20


Mechanical specifications

Dimensions (HxWxD) 109 x 23.5 x 104 mm

Dimensions (HxWxD) w/ 4501 / 4511 109 x 23.5 x 116 / 131 mm

Weight approx. 155 g

Weight incl. 4501 / 4511 (approx.) 170 g / 255 g

Wire size 1 x 2.5 mm2 stranded wire

Screw terminal torque 0.5 Nm


Common specifications


Supply voltage, universal 21.6...253 VAC, 50...60 Hz or 19.2...300 VDC


Isolation voltage

Isolation voltage, test / working 2.3 kVAC / 250 VAC


Response time

Temperature input, programmable (0...90%, 100...10%) 1...60 s

mA / V input (programmable) 0.4...60 s


Auxiliary supplies

2-w. supply (term. 44...43) 25...16 VDC / 0...20 mA

Fuse 400 mA SB / 250 VAC

Max. power consumption ≤ 2.5 W

Communications interface Communication enabler 4511 / Programming front 4501

Signal / noise ratio Min. 60 dB (0...100 kHz)

Accuracy Better than 0.1% of selected range

EMC immunity influence < ±0.5% of span

Extended EMC immunity: NAMUR NE 21, A criterion, burst < ±1% of span


Input specifications

RTD input

RTD type Pt100, Ni100, lin. R

Cable resistance per wire (max.) 50 Ω

Sensor current Nom. 0.2 mA

Sensor error detection Yes

Short circuit detection < 15 Ω

TC input

Thermocouple type B, E, J, K, L, N, R, S, T, U, W3, W5, LR

CJC via internally mounted sensor < ±1.0°C

Sensor error detection Yes

Sensor error current: When detecting / else Nom. 2 μA / 0 μA

Current input

Measurement range 0...20 mA

Programmable measurement ranges 0...20 and 4...20 mA

Input resistance Nom. 20 Ω + PTC 50 Ω

Voltage input

Measurement range 0...12 VDC

Programmable measurement ranges 0/0.2...1, 0/0.5...2.5, 0/1...5, 0/2...10 VDC

Input resistance Nom. 10 MΩ


Output specifications

Frequency output range 0...25000 Hz

Min. frequency (span) 0.001 Hz

Other output types PNP, NPN and TTL

Sensor error indication, programmable 0...26250 Hz

*of span = of the currently selected measurement range



EMC 2004/108/EC

LVD 2006/95/EC

UL UL 508

EAC TR-CU 020/2011

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19. 3403 2300
Av. Santo Estevão, 509
Vila Rezende - 13405-249

Piracicaba, SP - Brazil
Techno Supply Import and Export Ltda.
CNPJ 05.505.756/0001-06