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CONVERTERS OF Pt100 RESISTANCE,
TRANSMITTER RESISTANCE AND THERMOELECTRIC VOLTAGE
PP100, PO100, PQ100 |
TWO-WIRE CONNECTION, Pt100 RESISTANCE, TRANSMITTER RESISTANCE AND
THERMOELECTRIC VOLTAGE CONVERTER |
Profile: |
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PP100 (PO100) |
PQ100 |
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Description:
- designed to be mounted in the unified head of a "B" type thermometer
- supply voltage of 12...34V to be fed via the output line 4 to 20mA, in arbitrary polarity
- conversion accuracy < 0,3%
- low cost |
The module has been designed to convert the output of a
resistance thermometer ("PP"), resistance transmitter ("PO") or thermocouple ("PQ") into a unified output of 4 to
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 input and output
circuits are not isolated from each other. |
Electrical specifications: |
| - operating temperature range: |
-25...+80°C |
| - supply voltage: |
12...34V DC, stabilized (measured across the connecting terminals) |
| - supply voltage ripple: |
max. 0,5V |
| - connecting wire polarity: |
arbitrary |
| - current limit: |
- sensor short circuit: 3,7mA±0,05mA |
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- sensor open circuit: 29mA±1mA |
| - inputs: |
PP100: |
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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PO100: |
resistance transmitter 0..100, 5...105, 1000, 10 000W... |
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PQ100: |
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 |
| - Pt100 lead-in wire resistance compensation: |
< 0,03%/1W |
| - cold junction temperature compensation: |
using a Pt100 sensor at the converter terminals < ±1°C |
| - measuring current for "PP" and "PO": |
typically 0,2mA |
| - linearization method: |
parabolic curve for Pt and Ni, otherwise no linearization |
| - output: |
4-20mA |
| - accuracy: |
measurement error: |
< 0,15% |
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linearity error: |
< 0,1% |
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temperature induced error: |
< 0,01%/°C |
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supply voltage effect: |
< 0,01%/V |
| - enclosure: |
casing / terminal board: |
IP68 / IP10 |
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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: (see the Figure) |
| PP100, PO110: |
Soldering pins......for RTD connection (by arrangement, terminals may be fitted instead)
Terminal board.....output current loop (polarity insensitive)
Standard connection is two-wire. Three-wire connection for RTD sensor is available by special order. |
| PQ100: |
+,-......................to measure Tc (the device measures the temperature of the terminals to compensate for the cold junction temperature)
Terminal board....output current loop (polarity insensitive) |
| The terminals accept wires with cross sections not exceeding 2,5mm2. |
Converter dimensions and circuit diagrams:
|
PP100
(PO100) |
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| PQ100 |
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Ordering instructions:
Your purchase order should include: converter type, input signal type and range, number of pieces and special requirements, if any.
Most frequently ordered input ranges:
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| PP100: |
Pt100 -50...+50°C
Pt100 -50...+150°C
Pt00 -20...+60°C
Pt100 0...+50°C
Pt100 0...+80°C
Pt100 0...+100°C
Pt100 0...+120°C
Pt100 0...+150°C
Pt100 0...+180°C
Pt100 0...+200°C
Pt100 0...+250°C
Pt100 0...+300°C
Pt100 0...+400°C
Ni1000 -50...+50°C
Ni1000 -50...+150°C
Ni1000 0...+50°C
Ni1000 0...+100°C
Ni1000 0...+150°C
Ni1000 0...+200°C |
PO100: |
3w 0...100W
3w 5...105W
3w 10...75W
3w 0...220W
3w 0...470W
2w 0...500W
2w 0...1000W
2w 0...10000W
Pot. 0...100W
Pot. 5...105W
Pot. 0...105W
Pot. 0...130W
Pot. 0...500W |
PQ100: |
"J" 0...+200°C
"J" 0...+300°C
"J" 0...+400°C
"J" 0...+600°C
"J" 0...+800°C
"K" 0...+100°C
"K" 0...+200°C
"K" 0...+400°C
"K" 0...+600°C
"K" 0...+900°C
"K" 0...+1000°C
"K" 0...+1200°C
"K" 0...+1600°C
"L" 0...+200°C
"L" 0...+600°C
"L" +200...+600°C
"S" 0...+1400°C
"S" 0...+1600°C
... other ranges by request |
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| Examples: |
PP100 Pt100 0...+100°C, 1 pc., input terminals must be fitted
PO100 5...105W variable resistance, 10 pcs.
PQ100 0...600°C Tc "K", 1 pc. |
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