3112
Pt100 converter - isolated
- Excellent accuracy, better than 0.05% of span
- Slimline housing of 6 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
Manuals : 
Data sheet :
Application
- The 3112 temperature converter measures a standard 2-, 3- or 4-wire Pt100 temperature sensor, and provides an isolated analog voltage or current output.
- High 3 port isolation provides surge suppression and protects the control system from transients and noise.
- The 3112 can be mounted in the safe area or in Zone 2 / Division 2 areas.
- Approved for marine applications.
Technical characteristics
- Flexibly powered by 24 VDC (±30%) via power rail or connectors.
- < 30 ms fast response time with simultaneous sensor error detection when selected.
- Selectable 300 ms response time when signal dampening is needed.
- Excellent conversion accuracy in all available ranges, better than 0.05% of span.
- Meeting the NAMUR NE21 recommendations, the 3112 provides top measurement performance in harsh EMC environments.
- The device meets the NAMUR NE43 standard defining out of range and sensor error output values.
- A visible green LED indicates operational status of the unit and the input sensor.
- 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 mm housing allows up to 165 units to be mounted per meter of DIN rail, without any air gap between units.
- Wide ambient temperature range of -25...+70°C.
Environmental Conditions
Specifications range -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 & measurement / 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 x 2.5 mm2 / AWG 26...12 stranded wire Screw terminal torque 0.5 Nm Vibration IEC 60068-2-6 : 2007 Vibration: 2...25 Hz ±1.6 mm Vibration: 25...100 Hz ±4 g Common specifications
Supply voltage 16.8...31.2 VDC Max. power consumption 0.7 W Isolation voltage, test 2.5 kVAC Isolation voltage, working 300 VAC (reinforced) / 250 VAC (Zone 2, Div. 2) Accuracy Better than 0.05% of selected range Signal / noise ratio > 60 dB Signal dynamics, input 23 bit Signal dynamics, output 18 bit Response time (0...90%, 100...10%) < 30 ms / 300 ms (selectable) EMC immunity influence < ±0.5% of span Extended EMC immunity: NAMUR NE 21, A criterion, burst < ±1% of span Incorrect DIP-switch setting identification 0 V / 0 mA output; LED 0.5 s / 1 Hz Input specifications
Temperature range, Pt100 -200...+850°C Accuracy, RTD: the greater of Better than 0.05% of span or 0.1°C Temperature coefficient, RTD: the greater of 0.02°C/°C or ≤ ±0.01%/°C Sensor current, RTD < 150 µA Sensor cable resistance, RTD < 50 Ω per wire Effect of sensor cable resistance (3-/4-wire), RTD < 0.002 Ω / Ω Sensor error detection, RTD Yes - selectable via DIP-switch Broken sensor detection > 800 Ω Shorted sensor detection < 18 Ω Output specifications
Programmable current ranges 0 / 4...20 mA Range limits (0...20 mA) 0...20.5 mA Sensor error indication (0...20 mA) 0 mA or 23 mA / OFF Range limits (4...20 mA) 3.8...20.5 mA acc. to NAMUR NE43 Sensor error indication (4...20 mA) 3.5 mA or 23 mA / acc. to NAMUR NE43 or OFF Load (@ current output) ≤ 600 Ω (12.6 V / 21 mA) Open output < 18 V Updating time 10 ms Load stability, current output ≤0.01% of span / 100 Ω Programmable voltage ranges 0/1...5 and 0/2...10 V Low range 0/1...5 V Limits, low range 0/0.875...5.125 V High range 0/2...10 V Limits, high range 0/1.75...10.25 V Sensor error indication, voltage output 0 V / 10% above the max. / none Load (@ voltage output) ≥ 10 kΩ Current limitation @ low output load < 60 mA peak / < 4 mA average Approvals
EMC EN 61326-1 LVD 2006/95/EC EN 61010-1 ATEX 2004/108/EC KEMA 10ATEX0147 X IECEx KEM 10.0068X FM 3041043-C DNV Marine Stand. f. Certific. No. 2.4 GL V1-7-2 EAC TR-CU 020/2011 EN 61326-1 UL UL 61010-1