§ PLUG-IN TRANSDUCER § 2-OUTPUT TYPESENSOR TRANSDUCER

RESISTANCE TEMPERATURE TRANSDUCER
WRHTP2 –■ Use
By inputting resistance value of a 3-wire thermal
resistance based on the JIS, this device insulates andconverts the resistance value into a DC signal
proportional to temperature.

WRHTP2-1A4H51(80×50×133mm/500g)■ Connection diagram■ Features
1. Constant voltage/current output.
2. Withstand voltage between input, output, auxiliary
supply and outer case is AC2, 000V (50/60Hz), complete
insulation for 1 min..
3. Withstand voltage between 1st output and 2nd output
is AC1, 000V.
4. Impulse withstands voltage 5kV, 1.2/50µs (between
electric circuit and outer case) positive/ negative
polarity 3 times each is guaranteed.

■ Specification
Kind ofresistancethermomet
er bulb

Input*

1st Output(load resistance)

2nd Output(load resistance)

1:Pt, 100ΩTempera-A1: 0-50℃

C5: -20-100℃

1: DC0-100mV(≧200Ω)

1: DC0-100mV (≧200Ω)

at 0℃

ture span

A2: 0-60℃

C6: -20-120℃

2: DC0-1V (≧200Ω)

2: DC0-1V(≧200Ω)≧50℃

A3: 0-80℃

D1: -30-50℃

3: DC0-5V(≧1kΩ)

3: DC0-5V(≧1kΩ)

2:Pt, 50Ω

Specified

A4: 0-100℃

D2: -30-60℃

4: DC 0-10V (≧2kΩ)

at 0℃

current:

A5: 0-120℃

D3: -30-80℃

5: DC1-5V

2mA

A6: 0-150℃

E1: -50-50℃

A: DC0-1mA (≦12kΩ)

A: DC0-1mA (≦7kΩ)

3:Cu,100Ω

A7: 0-200℃

E2: -50-60℃

B: DC0-5mA (≦2.4kΩ)

B: DC0-5mA (≦1.4kΩ)

at 0℃

A8: 0-300℃

E3: -50-80℃

C: DC0-10mA(≦1.2kΩ)

C: DC0-10mA (≦700Ω)

B1: -10-40℃

E4: -50-100℃

D: DC0-16mA (≦750Ω)

D: DC0-16mA (≦430Ω)

4:Cu,50Ω

B2: -10-50℃

E5: -50-120℃

E: DC1-5mA (≦2.4kΩ)

E: DC1-5mA (≦1.4kΩ)

at 0℃

B3: -10-60℃

E6: -50-150℃

F: DC4-20mA(≦600Ω)

F: DC4-20mA (≦350Ω)

C1: -20-40℃

F1: -70-30℃

0: other than those above

0: other than those above

0:other

C2: -20-50℃

F2: -70-80℃

than those

C3: -20-60℃

G1: -100-100℃

H: DC4-20mA(≦800Ω)

5: DC1-5V (≧1kΩ)

above

C4: -20-80℃

00: other thanthose above(≧1kΩ)

DC1-5V(≧250kΩ)
With output switching
function

4: DC 0-10V (≧2kΩ)
5: DC1-5V(≧1kΩ)

Auxiliary supply
1: AC100V±10%,50/60Hz
2: AC110V±10%,50/60Hz
3: AC200V±10%,50/60Hz
4: AC220V±10%,50/60Hz
5: DC24V±10%0: other than those above

Common specification
Tolerance: ±0.5%
Response time:≦0.5sec./90%
Consumption VA:
AC power source:3VA
DC power source:3.5W
Weight:AC power source:500g
DC power source:400g

1: AC100V+10%, -15%,50/60Hz2: AC110V+10%, -15%,50/60Hz
3: AC200V+10%, -15%,50/60Hz
4: AC220V+10%, -15%,50/60Hz
5: DC24V+10%, -15%,* Operating temperature range of thermal resistance: -200-＋650℃● Open of current output: even if the current output terminal is used in a state of regular open, there is no problem. Also, a voltage of approx. 25V occurs on the output terminal.

● Built-in linearizer
Thermal electromotive force of a thermocouple is not proportional to temperature.
It is the linearizer that converts thermal electromotive force into an output
proportional to temperature.

Products List3

§ PLUG-IN TRANSDUCER § 2-OUTPUT TYPESENSOR TRANSDUCER● Built-in burnout
The device detects disconnection of thermocouple and does scale-out of output to positive (+) side.
Scale-out to negative (-) side is also manufacturable if specified.
● Specified current
Specified current is a current flowing into a thermal resistance. Change of resistance value can bemeasured by voltage drop caused by the specified current. In the case of Pt, standard specified current
is 2mA.
● Built-in external conducting wire resistance compensating circuit
External conducting wire resistance is the resistance value of a conducting wire excluding theresistance value of element S. As the influence of external conducting wire resistance, it does
compensate when resistance values of all conducting wires are the same, but it becomes an error whenresistance values of all conducting wires are different from each other. Generally, taking into
consideration the variousness of conducting wires, use the product under ranges listed in the tablebelow.
ThermalExternal conducting wire resistanceresistanceInput span ≧100℃

50℃≦Input span < 100℃

Pt 100Ω≦10Ω/line≦5Ω/line

Pt50Ω≦5Ω/line≦2.5Ω/line

Cu 100Ω≦10Ω/line≦5Ω/lineCu≦5Ω/line≦2.5Ω/line50Ω■ Block diagram①Constant current circuit (measuring current)②Reference voltage circuit③Linearity correction circuit④Burnout detecting circuit⑤High input resistance amplifying circuit⑥Differential amplifying circuit⑦Pulse width modulation circuit⑧Pulse width demodulation circuit⑨Output circuit⑩Insulated power source circuit■ Purchase specifications

Type●Item to specify

WRHTP2 –1A4

H5

1Auxiliary
supply2nd Output

1st Output
Input
Kind of thermal resistance

Products List4