PR Electronics Pt100 converter PR 3102

2026-03-12

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PR3102 Pt100 converter

Environmental Conditions

Operating temperature -25°C to +70°C
Storage temperature -40°C to +85°C
Calibration temperature 20…28°C
Relative humidity < 95% RH (non-cond.)
Protection degree IP20
Installation in Pollution degree 2 & meas. / overvoltage cat. II

Mechanical specifications

Dimensions (HxWxD) 113 x 6.1 x 115 mm
Weight approx. 70 g
DIN rail type DIN EN 60715/35 mm
Wire size 0.13…2.5 mm2 / AWG 26…12 stranded wire
Screw terminal torque 0.5 Nm
Vibration IEC 60068-2-6
2…25 Hz ±1.6 mm
25…100 Hz ±4 g

Common specifications

Supply

Supply voltage 16.8…31.2 VDC
Max. required power 0.52 W
Max. power dissipation 0.52 W

Response time

Response time (0…90%, 100…10%) < 30 ms / 300 ms (selectable)
Signal / noise ratio Min. 60 dB
Programming DIP switches
Signal dynamics, input 23 bit
Signal dynamics, output 18 bit
Accuracy Better than 0.1% of sel. range
EMC immunity influence < ±0.5% of span
Extended EMC immunity: NAMUR NE21, A criterion, burst < ±1% of span
Incorrect DIP-switch setting identification 0 V / 0 mA output; LED 0.5 s / 1 Hz

Input specifications

RTD input

Temperature range, Pt100 -200…+850°C
Min. measurement range (span) 10°C
Accuracy: the greater of Better than 0.1% of span or 0.2°C
Temperature coefficient: the greater of 0.02°C/°C or ≤ ±0.01%/°C
Sensor current < 150 µA
Sensor cable resistance < 50 Ω per wire
Effect of sensor cable resistance (3-/4-wire) < 0.002 Ω / Ω
Sensor error detection Yes – selectable via DIP-switch
Broken sensor detection > 800 Ω
Shorted sensor detection < 18 Ω

Output specifications

Common output specifications

Updating time 10 ms

Current output

Signal range 0…23 mA
Programmable signal ranges 0 / 4…20 mA
Sensor error indication (0…20 mA) 0 mA or 23 mA / OFF
Sensor error indication (4…20 mA) 3.5 mA or 23 mA / acc. to NAMUR NE43 or OFF
Load (@ current output) ≤ 600 Ω
Load stability ≤ 0.01% of span / 100 Ω
Current limitation @ low output load < 60 mA peak / < 4 mA average

Voltage output

Programmable signal ranges 0/1…5 and 0/2…10 V
Sensor error indication 0 V / 10% above the max. / none
Load (@ voltage output) ≥ 10 kΩ
Open output < 18 V

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