Resistance thermometer
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Measured variable
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Temperature
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Sensor type
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Pt25 to Pt1000
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- to JIS C 1604; a=0.00392 K-1
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Pt25 to Pt1000
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Ni25 to Ni1000
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over special characteristic (max. 30 points)
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Sensor factor
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0.25 ... 10 (adaptation of the basic type, e.g. Pt100 to version Pt25 ... Pt1000)
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Units
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°C or °F
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Connection
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1 resistance thermometer (RTD) in 2-wire, 3-wire or 4-wire system
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- Generation of average value
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2 identical resistance thermometers in 2-wire system for generation of average temperature
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2 identical resistance thermometers (RTD) in 2-wire system (RTD 1 – RTD 2 or RTD 2 – RTD 1)
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Interface
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Parameterizable line resistance ≤ 100 Ω (loop resistance)
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No balancing required
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No balancing required
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Sensor current
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≤ 0.45 mA
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Response time
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≤ 250 ms for 1 sensor with open-circuit monitoring
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Open-circuit monitoring
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can be switched off
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Short-circuit monitoring
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can be switched off (value is adjustable)
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Range
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Parameterizable (see table "Digital measuring errors")
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Min. measured span
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10 °C (18 °F)
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Characteristic
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Temperature-linear or special characteristic
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Resistance-based sensors
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Measured variable
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Actual resistance
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Sensor type
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Resistance-based, potentiometers
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Units
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Ω
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Connection
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1 resistance-based sensor (R) in 2-wire, 3-wire or 4-wire system
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- Generation of average value
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2 resistance-based sensors in 2-wire system for generation of average value
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2 resistance thermometers in 2-wire system (R1 – R2 or R2 – R1)
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Interface
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Parameterizable line resistance ≤ 100 Ω (loop resistance)
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No balancing required
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No balancing required
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Sensor current
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≤ 0.45 mA
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Response time
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≤ 250 ms for 1 sensor with open-circuit monitoring
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Open-circuit monitoring
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can be switched off
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Short-circuit monitoring
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can be switched off (value is adjustable)
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Range
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Parameterizable, max. 0 ... 2200 Ω (see Table "Digital measuring errors")
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Min. measured span
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5 Ω ... 25 Ω (see Table "Digital measuring errors")
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Characteristic
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Resistance-linear or special characteristic
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Thermocouple elements
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Measured variable
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Temperature
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Sensor type (thermocouples)
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Pt30Rh-Pt6Rh to DIN IEC 584
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W5%-Re to ASTM 988
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W3%-Re to ASTM 988
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NiCr-CuNi to DIN IEC 584
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Fe-CuNi to DIN IEC 584
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NiCr-Ni to DIN IEC 584
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Fe-CuNi to DIN 43710
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NiCrSi-NiSi to DIN IEC 584
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Pt13Rh-Pt to DIN IEC 584
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Pt10Rh-Pt to DIN IEC 584
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Cu-CuNi to DIN IEC 584
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Cu-CuNi to DIN 43710
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Units
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°C or °F
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Connection
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1 thermocouple (TC)
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- Generation of average value
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2 thermocouples (TC)
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2 thermocouples (TC) TC1 – TC2 or TC2 – TC1
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Response time
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≤ 250 ms for 1 sensor with open-circuit monitoring
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Open-circuit monitoring
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can be switched off
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Cold junction compensation
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With integrated Pt100 resistance thermometer
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With external Pt100 IEC 60571 (2-wire or 3-wire connection)
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Cold junction temperature can be set as fixed value
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Range
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Parameterizable (see table "Digital measuring errors")
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Min. measured span
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Min. 50 ... 199 °C (90 ... 180 °F) (see table "Digital measuring errors")
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Characteristic
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Temperature-linear or special characteristic
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mV Sensor
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Measured variable
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DC voltage
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Sensor type
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DC voltage source (DC voltage source possible over an externally connected resistor)
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Units
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mV
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Response time
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≤ 250 ms for 1 sensor with open-circuit monitoring
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Open-circuit monitoring
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can be switched off
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Short-circuit monitoring
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can be switched off (value is adjustable)
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Range
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-10 ... 70 mV -100 1100 mV
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Min. measured span
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2 mV or 20 mV
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Overload capacity of the input
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-1.5 ... +3.5 V DC
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Input resistance
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≥ 1 MΩ
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Characteristic
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Voltage-linear or special characteristic
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Output
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Output signal
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4 ... 20 mA, 2-wire
With SITRANS TH300, additional communication acc. to HART Rev. 5.9
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Power supply
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11 ... 35 V DC (to 30 V with EEx)
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Max. load
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(Uaux – 11 V)/0.023 A
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Overrange
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3.6 ... 23 mA, continuously adjustable (default range: 3.84 mA ... 20.50 mA)
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Error signal (e.g. in the event of sensor breakage)
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3.6 ... 23 mA, continuously adjustable (default value: 22.8 mA)
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Sample cycle
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0.25 s nominal
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Damping
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Software filter 1st order 0 ... 30 s (parameterizable)
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Protection
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Against reversed polarity
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Electrically isolated
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Input against output (1 kVeff)
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Measuring accuracy
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Digital measuring errors
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See Table "Digital measuring errors"
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Reference conditions
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24 V ± 1%
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500 Ω
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23 °C
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> 5 min
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Error in the analog ouput (digital/analog converter)
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< 0.1 % of span
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Error due to internal cold junction
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< 0.5 °C (0.9 °F)
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Temperature effect
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< 0.1% der max. span/10°C (18 °F)
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Power supply effect
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< 0.005% of span/V
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Effect of load impedance
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< 0.012% of span/100 Ω
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Long-term drift
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< 0.02% of max. span
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< 0.03% of max. span
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< 0.04% of max. span
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Rated conditions
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Ambient temperature
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Storage temperature
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-40 ... +85 °C (-40 ... 185 °F)
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Functional temperature
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-40 ... +85 °C (-40 ... 185 °F)
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Relative humidity
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< 98%, with condensation
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Electromagnetic compatibility
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acc. to DIN EN 61326 and NE21
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Construction
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Material
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Molded plastic
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Approx. weight
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50 g (0.11 lb)
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Dimensions
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See "Dimension drawings"
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Cross-section of cables
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Max. 2.5 mm² (AWG 13)
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Degree of protection to EN 60529
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IP40
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IP00
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Certificate and approvals
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Explosion protection ATEX
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- "Intrinsically-safe" type of protection
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II 1G EEx ia IIC T6/T4 II 2(1)G EEx ia/ib IIC T6/T4
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- "Operating equipment that is non-ignitable and has limited energy" type of protection
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II 3G EEx nAL IIC T6/T4
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PTB 05 ATEX 2040X
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Explosion protection to FM for USA and Canada (cFMUS)
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PID 3024169
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IS Cl I, II, III, Div 1, GP ABCDEFG T4/T5/T6 IS Cl I, ZN 0, 1 AEx ia IIC T4/T5/T6 NI Cl I, II, III, Div 2, GP ABCDFG T4/T5/T6 Cl I, ZN2, GP IIC T4/T5/T6
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Software requirements for SIPROM T
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PC operating system:
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Windows ME, 2000 and XP; also Windows 95, 98 and 98 SE, but only in connection with RS 232 modem.
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