TC converter - isolated

3111

The 3111 temperature converter measures standard TC J and K temperature sensors, 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 3111 can be mounted in the safe area or in Zone 2 / Division 2 areas.
Approved for marine applications.

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.
Selectable internal/external CJC.
Excellent conversion accuracy in all available ranges, better than 0.05% of span.
Meeting the NAMUR NE21 recommendations, the 3111 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.

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.

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

Supply
Supply voltage	16.8...31.2 VDC
Max. required power	0.70 W
Max. power dissipation	0.70 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)
Signal / noise ratio	Min. 60 dB
Programming	DIP-switches
Signal dynamics, input	23 bit
Signal dynamics, output	18 bit
Accuracy	Better than 0.05% of selected 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

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

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
Open output	< 18 V

ATEX	II 3 G Ex nA IIC T4 Gc
IECEx	Ex nA 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