PR 6437A 2-Wire HART 7 Temperature Transmitter
Product Overview
Advanced 2-wire HART 7 temperature transmitter supporting RTD, TC, potentiometer, linear resistance and bipolar mV inputs. Features single or true dual inputs with sensor redundancy and drift detection capabilities.
Environmental Conditions
| Operating temperature |
-50°C to +85°C (standard) -40°C to +80°C (SIL) |
| Storage temperature |
-50°C to +85°C |
| Calibration temperature |
23...25°C |
| Relative humidity |
< 99% RH (non-cond.) |
| Protection degree |
IP20 |
Mechanical Specifications
| Dimensions (HxWxD) |
109 x 23.5 x 104 mm |
| Weight (single input / dual input) |
150 g / 160 g |
| Wire size |
0.13...2.08 mm² AWG 26...14 stranded wire |
| DIN rail type |
DIN EN 60715/35 mm |
| 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 |
7.5*...48** VDC |
| Power dissipation, per channel |
≤ 850 mW |
| Additional min. supply voltage when using test terminals |
0.8 V |
| Min. load resistance at >37 V supply |
(Vsupply - 37) / 23 mA |
Performance Characteristics
| Isolation voltage, test / working |
2.5 kVAC / 55 VAC |
| Response time |
75 ms |
| Programmable damping |
0...60 s |
| Polarity protection |
All inputs and outputs |
| Warm-up time |
< 5 min. |
| Start-up time |
< 2.75 s |
| Programming |
HART & PR 5909 Loop Link communications interface |
| Write protection |
Jumper or software |
| Signal / noise ratio |
> 60 dB |
| Long-term stability, better than |
±0.05% of span / year (±0.18% of span / 5 years) |
| Signal dynamics, input |
24 bit |
| Signal dynamics, output |
18 bit |
| Effect of supply voltage change |
< 0.005% of span / VDC |
| Accuracy |
See manual for details |
| EMC immunity influence |
< ±0.1% of span |
| Extended EMC immunity: NAMUR NE21, A criterion, burst |
< ±1% |
Input Specifications
RTD Input
| RTD type |
Pt10...10000, Ni10...10000, Cu5...1000 |
| Basic accuracy, e.g. Pt100 |
≤ ±0.04°C |
| Cable resistance per wire |
50 Ω (max.) |
| Effect of sensor cable resistance (3-/4-wire) |
< 0.002 Ω / Ω |
| Sensor current |
< 0.15 mA |
| Sensor error detection |
None, Shorted, Broken, Shorted or Broken |
TC Input
| Thermocouple type |
B, E, J, K, L, N, R, S, T, U, W3, W5, LR |
| Basic accuracy, e.g. TC K |
≤ ±0.25°C |
| Cold junction compensation (CJC) |
Constant, internal or external via a Pt100 or Ni100 sensor |
| Sensor error detection |
None, Shorted, Broken, Shorted or Broken |
Linear Resistance Input
| Measurement range / min. range (span) |
0 Ω...100 kΩ / 25 Ω |
| Cable resistance per wire (max.) |
50 Ω |
| Sensor current |
< 0.15 mA |
| Sensor error detection |
None, Broken |
Potentiometer Input
| Potentiometer min....max. |
10 Ω...100 kΩ |
| Measurement range / min. range (span) |
0...100% / 10% |
| Cable resistance per wire (max.) |
50 Ω |
| Sensor current |
< 0.15 mA |
| Sensor error detection |
None, Shorted, Broken, Shorted or Broken |
mV Input
| Measurement range |
-800...+800 mV (bipolar) -100...1700 mV |
| Min. measurement range (span) |
2.5 mV |
| Input resistance |
10 MΩ |
| Sensor error detection |
None, Broken |
Output Specifications
| Normal range, programmable |
3.8...20.5 / 20.5...3.8 mA |
| Extended range (output limits), programmable |
3.5...23 / 23...3.5 mA |
| Basic accuracy |
≤ ±1.6 μA (0.01% of full output span) |
| Updating time |
10 ms |
| Load (@ current output) |
≤ (Vsupply -7.5)/0.023 [Ω] |
| Load stability |
< 0.01% of span / 100 Ω |
| Sensor error indication |
Programmable 3.5…23 mA |
| NAMUR NE 43 Upscale/Downscale |
> 21 mA / < 3.6 mA |
| HART protocol revisions |
HART 7 and HART 5 |
Compliance & Approvals
Regulatory Compliance
| EMC |
2014/30/EU & UK SI 2016/1091 2014/30/EU |
| RoHS |
2011/65/EU & UK SI 2012/3032 |
| ATEX |
2014/34/EU & UK SI 2016/1107 |
| EAC |
TR-CU 020/2011 |
| EAC Ex |
TR-CU 012/2011 |
International Approvals
| ATEX |
DEKRA 18ATEX0135X |
| IECEx |
IECEx DEK. 16.0029X |
| CSA |
CSA 16.70066266 |
| c FM us |
FM16US0287X / FM16CA0146X |
| INMETRO |
DEKRA 23.0002X |
| NEPSI |
GYJ23.1253X |
| EAC Ex |
EAEU KZ 7500361.01.01.08756 |
| EU RO MR Type Approval |
MRA0000023 |
| SIL |
SIL 2 / SIL 3 certified & fully assessed acc. to IEC 61508 |
Note: * / ** See manual for detailed specifications and operating conditions.