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CONVERTERS OF Pt100 RESISTANCE,
TRANSMITTER RESISTANCE AND THERMOELECTRIC VOLTAGE
PP110, PO110, PQ110
PP112, PO112 |
TWO-WIRE CONNECTION, Pt100 RESISTANCE, TRANSMITTER RESISTANCE AND
THERMOELECTRIC VOLTAGE CONVERTERS |
Profile: |
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Description:
- supply voltage of 12...34V to be fed via the output line 4 to 20mA, in arbitrary polarity
- conversion accuracy < 0.3%
- DIN rail mounted design (TIP-Tl21 box)
- 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; the PQ110 model provides
external compensation of the cold junction temperature by means of a Pt100 sensor, thus eliminating the need
for an expensive thermocouple feed line. 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.
The PP112 (PQ112) model houses two independent converters PP110 (PQ110)
in a single casing. This design features a significant saving in volume occupied. |
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: |
PP110, PP112: |
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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PO110, PO112: |
resistance transmitter 0..100, 5...105, 1000, 10 000W... |
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PQ110: |
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: |
three or two-wire / two-wire for a thermocouple |
| - Pt100 lead-in wire resistance compensation: |
< 0,03%/1W |
| - cold junction temperature compensation: |
by means of a Pt100 sensor fitted at the converter terminals < ±1°C |
| - measuring current for "PP" and "PO" types: |
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: |
IP40 / 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) |
| PP110, PO110: |
1,2,3...inputs (1, 3 for two-wire connection)
4,5......output current loop
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| PP112, PO112: |
1A,2A,3A...converter 1 input
1B,2B,3B...converter 2 input
4A,5A........output current loop 1
4B,5B........output current loop 2
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| PQ110: |
1,2......for Tc measurement (terminal 2 +)
3,4......output current loop
5,6,7...for internal or external compensation
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The output current loop is polarity insensitive.
The terminals accept wires with cross sections not exceeding 2,5mm2. |
Converter dimensions and circuit diagrams:
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Terminal board jumpers are used to toggle between the internal/external cold junction compensation. |
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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| PP110, 112: |
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 -30...+60°C
Ni1000 0...+50°C
Ni1000 0...+100°C
Ni1000 0...+150°C
Ni1000 0...+200°C |
PO110, 112: |
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 |
PQ110: |
"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: |
PP110 Pt100 0...+100°C, 1ks
PO110 5...105W potentiometer, 10 pcs.
PQ110 0...600°C Tc "K", 1 pc., including a Pt100 sensor for external compensation
PP112 2xNi1000 TKR6180 -25...+125°C, 3 pcs.
PO112 2x0...1000W variable resistance, 1 pc. |
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Czech version 
English version 