Temperature-Relay Type TR122D(A)

Pt100 Temperature-Relay, 1 Sensor Pt100, Digital display, 2 Limits, with pre-alarm and alarm,
Transducer for Pt100 (RTD) and resistance

Temperature-Relay Type TR122D(A)

Part number

no analog output
with analog output

Product description

 

Switching-Relays Typs TR 122 D(A) monitor the input-signal for 2 limits. The TR 122 DA transduces the measured temperature/resistance to a proportional DC-current. 
Applications of the TR 122 D(A) are:

  • Monitoring of temperatures with pre-alarm and alarm in machines and plants
  • Controlling of temperatures e.g. for heated sample gas lines or refrigerating plants
  • Transducer for Pt 100 (RTD) and resistance (TR 122 DA only)

Overview of Functions

  • 1 input sensor, Pt 100 (RTD) or resistance
  • Measuring ranges -199...850°C / 0...850 Resolution 0,1 °C /  within the ranges -19,9...99,9 °C / 0-99,9 
  • 2 relay outputs (each 1 change-over contact)
  • 1 analog output 0/4-20 mA scaleable (TR 122 DA only, not potentially separated from the inputs)
  • Universal power supply AC/DC 24-240 V
  • Storage and display of the measured MIN- and MAX-values

 

Technical data

Power Supply

Rated supply voltage Us

.......

AC/DC 24 – 240 V, 0 / 50 / 60 Hz < 3 W < 5 VA

 

Tolerance

.......

DC 20,4 - 297 V,
AC 20 - 264 V

 

Output

Relay output

.......

2 x 1 change-over contact (CO)

 

Switching voltage

.......

max. AC 415 V

 

Switching current

.......

max. 5 A

 

Switching capacity

.......

max. 1250 VA (ohmic load)
max. 48 W at DC 24 V

 

Reduction factor for cos ϕ 0,7

.......

3-wire, max. resistance 3 x 25 Ω

 

Nominal operational current Ie

AC15

.......

Ie = 1 A  .....  Ue = 400 V
Ie = 2 A  .....  Ue = 250 V

 

DC13

.......

Ie = 2 A    .....  Ue = 24 V
Ie = 0,2A  .....  Ue = 125 V
Ie = 0,1A  .....  Ue = 250 V

 

Recommended fuses for contacts

.......

T 3,15 A (gL)

 

Expected life mechanical

.......

1 x 107 switching cycles

 

Expected life electrical

.......

1 x 105 switching cycles at AC 250 V / 5 A
2 x 105 switching cycles at AC 250 V / 3 A
6 x 105 switching cycles at AC 250 V / 1 A

 

Test conditions (EN 50178 / EN 60 947)

Rated impulse voltage

.......

4000 V

 

Contamination level

.......

3

 

Rated insulation voltage Ui

.......

250 V

 

On-time

.......

100 %

 

Rated ambient temperature range

.......

-20 °C ... +60 °C (EN 60068-2-1 dry heat)

 

EMV – interference resistance

.......

EN 61000-6-2

 

EMV – emitted interference

.......

Vibration resistance EN 60068-2-6

 

Sensor connection

Measuring time tM

.......

< 2,5 s
< 5 s in case of changes > 5 K or < 1 K
< 15 s in case of sensor error

 

Tolerance

.......

±0,3 % of measured value ±0,5 K

 

Sensor current

.......

≤0,8 mA

 

Temperature drift

.......

<0,04°C/K

 

Analog output

Current output 0/4-20 mA

.......

max. 500 Ώ, Precision 0,3 % of Full-Scale

 

Temperature drift

.......

< 0,015 %/K

 

Error from impedance

.......

(250Ώ  - load)/250Ώ  * 0,3 % of current

 

At error short circuit Er1

.......

output 0 mA

 

Other errors

.......

output 22 mA

 

Housing

Design

.......

S12

 

Dimensions (height x width x depth)

.......

82 x 42 x 121 mm

 

Wire connection, one wire

.......

12-pole, each 2 x 1,5 mm2

 

Protection class housing

.......

IP 40

 

Protection class terminal

.......

IP 20

 

Mounting position

.......

any

 

Installation

.......

Snap mounting on DIN-rail 35 mm
According to EN 60715 or screws M4

 

Weight

.......

app. 250 g