Temperature converter, loop-powered - isolated
3331
- Excellent accuracy, better than 0.05% of span
- Slimline housing of 6.1 mm
- Excellent EMC performance and 50/60 Hz noise suppression
- Selectable < 30 ms / 300 ms response time
- Pre-calibrated temperature ranges selectable via DIP-switches
Application
- The 3331 temperature converter measures a standard Pt100, TC J and K temperature sensor, and provides an isolated passive analog current output signal.
- High 2 port isolation provides surge suppression and protects the control system from transients and noise.
- The 3331 can be mounted in the safe area or in Zone 2 / Division 2 areas.
- Approved for marine applications.
Technical characteristics
- Flexibly loop powered by 5.5...35 VDC via connectors.
- < 30 ms fast response time with simultaneous sensor error detection when selected.
- Selectable 300 ms response time when signal dampening is needed.
- Selectable internal/external CJC.
- Excellent conversion accuracy in all available ranges, better than 0.05% of span.
- Meeting the NAMUR NE21 recommendations, the 3331 provides top measurement performance in harsh EMC environments.
- The device meets the NAMUR NE43 standard defining out of range and sensor error output values.
- All terminals are protected against overvoltage and polarity error.
- High galvanic isolation of 2.5 kVAC.
- Excellent signal/noise ratio of > 60 dB.
Mounting / installation / programming
- Selectable DIP-settings for easy configuration of more than 1000 factory calibrated measurement ranges.
- The narrow 6.1 mm housing allows up to 163 units to be mounted per meter of DIN rail, without any air gap between units.
- Wide ambient temperature range of -25...+70°C.
Data sheet & Manuals
Data sheet
- 3331.pdf
- Latest version
Manuals
- 3000V106_UK.pdf
- 3000V105_UK.pdf
- 3000V104_UK.pdf
- 3000V103_UK.pdf
- 3000V102_UK.pdf
- 3000V101_UK.pdf
- 3000V100_UK.pdf
- Previous versions
- Latest version
Manuals in Russian
- 3000V106_RU.pdf
- 3000V105_RU.pdf
- 3000V104_RU.pdf
- 3000V103_RU.pdf
- 3000V102_RU.pdf
- Previous versions
- Latest version
Approvals & Certificates
ATEX certificate
- 3331_issue12.pdf
- Latest version
IECEx certificate
- 3331IEC_issue 11.pdf
- Latest version
UKEX certificate
- 3331UKEX_Issue1.pdf
- Latest version
FM certificate
- 3xxx_FM17CA0003X_US0004X.pdf
- 3xxx_FM_3041043_C.pdf
- Previous versions
- Latest version
UL certificate
- UL3101_02_11_12_13_3331_33_37.pdf
- Latest version
DNV marine certificate
- DNV_3xxx_TAA00001RW.pdf
- Latest version
EAC declaration
- EAC_EMC_declaration_Ex_3000_5000_6000_9000.pdf
- Latest version
EAC Ex certificate
- EAC_Ex.pdf
- Latest version
Metrology Pattern Approval (MPA), Russia
- MPA_Russia.pdf
- Latest version
Supplementary documentation
EU Declaration of Conformity
- 3331DoC_EU_105_UK.pdf
- 3331DoC_EU_104_UK.pdf
- 3331DoC_EU_103_UK.pdf
- 3331DoC_EU_102_UK.pdf
- 3331DoC_EU_101_UK.pdf
- 3331DoC_EU_100_UK.pdf
- Previous versions
- Latest version
UKCA Declaration of Conformity
- 3331DoC_UKCA_100_UK.pdf
- Latest version
CCC statement
- 3000_series_CCC_statement.pdf
- Latest version
EMC data
- 3000_EMC_data.pdf
- Latest version
PR default configurations
- PR_default_configurations.pdf
- Latest version
Safety note
Safety note
Order form
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 | 5.5...35 VDC |
| Max. required power | 0.80 W |
| Internal power dissipation | 19 mW...0.8 W |
Isolation voltage |
|
| Isolation voltage, test / working | 2.5 kVAC / 300 VAC (reinforced) |
| Zone 2 / Div. 2 | 250 VAC |
Response time |
|
| Response time (0...90%, 100...10%) | < 30 ms / 300 ms (selectable) |
| Voltage drop | 5.5 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 |
| Min. measurement range (span) | 10°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 |
| Min. measurement range (span) - TC J & K | 50°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 |
| Internal CJC error detection | Yes |
| External CJC error detection | Yes - selectable via DIP-switch |
| Open Thermocouple detection | Yes - selectable via DIP-switch |
Output specifications
Common output specifications |
|
| Updating time | 10 ms |
Current output |
|
| Programmable signal ranges | 4...20 and 20...4 mA |
| Load (@ current output) | ≤ (Vsupply - 5.5) / 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 |
I.S. / Ex marking
| ATEX | II 3 G Ex ec IIC T4 Gc |
| IECEx | Ex ec IIC T4 Gc |
| FM, US | Cl. I, Div. 2, Gp. A, B, C, D T4 or Cl. I, Zone 2, AEx nA IIC T4 |
| FM, CA | Cl. I, Div. 2, Gp. A, B, C, D T4 or Cl. I, Zone 2, Ex nA IIC T4 |
| EAC Ex | 2Ex nA IIC T4 Gc X |
Observed authority requirements
| EMC | 2014/30/EU & UK SI 2016/1091 |
| LVD | 2014/35/EU & UK SI 2016/1101 |
| ATEX | 2014/34/EU & UK SI 2016/1107 |
| RoHS | 2011/65/EU & UK SI 2012/3032 |
| EAC | TR-CU 020/2011 |
| EAC Ex | TR-CU 012/2011 |
Approvals
| ATEX | KEMA 10ATEX0147 X |
| IECEx | KEM 10.0068X |
| UKEX | DEKRA 21UKEX0055X |
| c FM us | FM17US0004X / FM17CA0003X |
| c UL us, UL 61010-1 | E314307 |
| EAC Ex | RU C-DK.HA65.B.00355/19 |
| DNV Marine | TAA00001RW |
Need support to select the right product for your application?
Our sales engineers are ready to help specify the right device to meet your needs.
Reach out by phone to get in touch with us straight away – or use the contact form or quick quote function to send your RFQ directly from the website. You’ll get a response within 24 hours on normal business days.
You can expect to get a confirmed delivery date via email within 2 days after we have received your order.
As soon as your package leaves our warehouse, you’ll receive tracking details via email. And if you have any questions along the way we’re just a phone call or email away.
 |
State-of-the-art manufacturing Our 8,500 sqm integrated and automated manufacturing campus in Denmark covers the entire value-chain from design and development to manufacturing. It allows us to design and optimize for testing and manufacturing thereby constantly driving quality up and costs down. |
 |
Dedicated Presale / Aftersales
|
 |
Product reliability |
 |
Product deployment
|
 |
Smart products
Check out our range of communication interfaces
|
