PR Electronics HART 7 temperature converter, loop-powered PR 3337

2026-03-16

3337_800x600px.jpg

PR3337 HART 7 temperature converter, loop-powered

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 6.2…35 VDC
Max. required power 0.80 W
Internal power dissipation 22 mW…0.8 W

Isolation voltage

Isolation voltage, test / working 2.5 kVAC / 300 VAC (reinforced)
Zone 2 / Div. 2 250 VAC

Response time

HART mode, (0…90%, 100…10%) 60 ms…60 s, programmable
DIP mode, (0…90%, 100…10%) < 60 ms
Voltage drop 6.2 VDC
Signal / noise ratio Min. 60 dB
Programming DIP switches
Signal dynamics, input 23 bit
Signal dynamics, output 18 bit
EMC immunity influence < ±0.5% of span
Extended EMC immunity: NAMUR NE21, A criterion, burst < ±1% of span
Incorrect DIP-switch setting identification 3.5 mA

Input specifications

RTD input

Temperature range, Pt100 -200…+850°C
Accuracy: the greater of Better than 0.05% of span or 0.1°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

TC input

Temperature range, TC J -100…+1200°C
Temperature range, TC K -180…+1372°C
Accuracy: the greater of Better than 0.05% of span or 0.5°C
Temperature coefficient: the greater of 0.1°C/°C or ≤ ±0.01%/°C
Sensor cable resistance < 5 kΩ per wire
Cold junction compensation (CJC): Accuracy @ external Pt100 input Better than ±0.15°C
Cold junction compensation (CJC): Accuracy @ internal CJC Better than ±2.5°C

Output specifications

Common output specifications

Updating time 10 ms

Current output

Programmable signal ranges 4…20 and 20…4 mA
Load (@ current output) ≤ (Vsupply – 6.2) / 0.023 [Ω]
Load stability ≤ 0.01% of span / 100 Ω
Sensor error indication 3.5 mA or 23 mA / acc. to NAMUR NE43 or OFF
HART protocol revisions HART 7

国内销售
International sales