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CONVERTERS OF Pt100 RESISTANCE,
TRANSMITTER RESISTANCE AND THERMOELECTRIC VOLTAGE
PX24, PXN24, PXN230 |
INPUT/OUTPUT ISOLATED, Pt100 RESISTANCE, TRANSMITTER RESISTANCE AND
THERMOELECTRIC VOLTAGE CONVERTER |
Profile: |
| PX24 |
PXN24, PX230 |
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Description: |
- designed for DIN 35 rail mounting
- input and output are isolated from each other as well as from supply circuits
- conversion accuracy < 0,3% |
The module has been designed to convert the output of a
resistance thermometer, resistance transmitter or thermocouple into a unified outputs (0..10V, 0..20mA,
4..20mA). The resistance sensors may be either two-wire or three-wire connected. The module can handle output
voltages of any standard Platinum or Nickel sensors, carrying out their temperature-to-resistance transfer
function linearization at a time. Two options of the resistance transmitter circuit connection are available,
namely, variable resistance and potentiometer. The converter can also handle any standard thermocouple voltages.
It provides the thermocouple cold junction compensation at the place of the converter's input terminals. However,
no linearization of the thermocouple voltage vs. temperature response curve is provided. The converter is
particularly well-suited for heavy electromagnetic interference environment operation and features input-to-output
isolation. |
Electrical specifications: |
| - operating temperature range: |
-25...+70°C |
| - supply voltage: |
12..30V DC, maximum ripple: 0,5V (as measured across the device terminals), for PX24 |
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24V DC ± 30% for PXN24 |
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230V AC ± 10% ( 45 - 65 Hz ) for PXN230 |
| - power input: |
max. 2VA |
| - current limit: |
30mA±5mA |
| - maximum output voltage: |
27V |
| - output voltage amplitude: |
min. 15V (R load = 750W) at 20mA (except PX24) |
| - voltage output load: |
max. 10mA |
| - inputs: |
Pt100, 1000 to IEC 751, any range from -50 to +600°C |
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(TMAX-TMIN) = cca 50...600°C |
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Ni100, 500, 1000 preferably for TKR 6180 ppm/K |
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variable resistance ranging 50W .. 800W in 3w connection |
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variable resistance ranging 1kW .. 10KW 2w connection (terminal 2 not connected) |
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potentiometer ranging 50W .. 10kW |
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thermocouple E, J, K, T, R, S, B, T without linearization |
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arbitrary range (TMAX-TMIN) = cca 50...1600°C |
| - input connection: |
two or three-wire / two-wire for a thermocouple |
| - resistance sensor lead-in wire resistance compensation: |
< 0,03%/1W (for three-wire connection) |
| - cold junction temperature compensation: |
by means of a Pt100 internal sensor fitted at the converter terminals < ±1°C |
| - linearization method: |
parabolic curve for Pt and Ni, otherwise no linearization |
| - output: |
0..1V, 0..5V, 0..10V, 0..5mA, 0..20mA, 4-20mA |
| - accuracy: |
measurement error: |
< 0,3% |
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linearity error: |
< 0,1% |
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temperature induced error: |
< 0,02%/°C |
| - enclosure: |
casing / terminal board: |
IP40 / IP10 |
| - dielectric strength: |
4000Vr.m.s., 50Hz/1 min |
| - settling time: |
300ms |
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| Type tests: |
Standard type test:
EMC:
Safety: |
to CSN EN 60770-1
to CSN EN 61326-1
assessed acc. to CSN EN 61010-1 |
Terminal connection: |
1, 2, 3 ...........
4,5.................
6,7................. |
see application examples
output (5 is +)
24V DC power supply terminals (7 is +), or 230V AC depending on the type
these are not connected in PX24, the converter is powered via its output line |
| The terminals accept wires with cross sections not exceeding 2,5mm2. |
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Converter dimensions:
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Ordering instructions:
The device has a fixed factory setting. The input
signal type and range cannot be changed. The output setting is fixed, too. The output type
of PX24 cannot be selected, it is fixed to 4..20mA. This information must therefore be
included in your purchase order.
Your purchase order should include: converter type,
input signal type and range, output signal type and range, number of pieces. Special
requirements must be discussed with us beforehand.
Most frequently ordered input ranges:
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| RTD |
Pt100 -50...+50°C
Pt100 -50...+100°C
Pt00 -20...+60°C
Pt100 0...+50°C
Pt100 0...+100°C
Pt100 0...+200°C
Pt100 0...+250°C
Pt100 0...+300°C
Pt100 0...+400°C
Pt1000 0…+100°C
Pt1000 0…+200°C
Ni1000 0…+100°C
Ni1000 0…+200°C |
OV |
3w 0...100W
3w 5...105W
2w 0...500W
2w 0...1000W
2w 0...10000W
2w 0...10KW |
Tc |
"J" 0…+200°C
"J" 0...+400°C
"J" 0...+600°C
"J" 0...+800°C
"K" 0...+100°C
"K" 0...+400°C
"K" 0...+600°C
"K" 0...+900°C
"K" 0...+1000°C
"K" 0...+1200°C
"S" 0...+1400°C
"S" 0...+1600°C
... other ranges by request |
| Potentiometer |
Pot. 0...100W
Pot. 5...105W
Pot. 0...105W
Pot. 0...1KW
Pot. 0...10KW |
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| Examples: |
PX24 Potentiometer 0...1KW, 2 pcs.
PXN24 Pt100 0...+100°C/4..20mA, 1 pc.
PXN230 Tc "K" 0...+1000°C/0..10V, 3 pcs. |
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Czech version 
English version 