Input

Selectable filters to suppress the line frequency

50 Hz, 60 Hz, also 10 Hz for special applications (line frequency filter is similar with measuring frequency)

Resistance thermometer

Measured variable

Temperature

Measuring range

Assignable

Span

Min. 25 °C (45 °F) x 1/scaling factor

Sensor type

• Acc. to IEC 751

Pt100 (IEC 751)

• Acc. to JIS C 1604-81

Pt100 (JIS C1604-81)

• Acc. to DIN 43760

Ni100 (DIN 43760)

• Special type (R_RTD ? 500 ?)

Multiples or fractions of the specified basic values can be assigned (e.g. Pt500, Ni120)

Characteristic curve

Temperature-linear, resistance-linear or customer-specific

Type of connection

• Normal connection
• Sum or parallel connection
• Mean-value or differential connection

Connection

2, 3 or 4-wire system

Measuring range limits

Depending on type of connected thermometer (defined range of resistance thermometer)

Sensor breakage monitoring

Monitoring of all connections for wire break (function can be switched off)

Sensor short-circuit monitoring

Configurable response threshold (function can be switched off)

Resistance-based sensor, potentiometer

Measured variable

Actual resistance

Measuring range

Assignable

Span

Min. 10 ?

Characteristic curve

Resistance-linear or customer-specific

Type of connection

• Normal connection
• Differential connection
• Mean-value connection

Connection

2, 3 or 4-wire system

Input range

0 ... 6000 ?;

with mean-value and difference circuits: 0 ... 3000 ?

Sensor breakage monitoring

Monitoring of all connections for wire break (function can be switched off)

Sensor short-circuit monitoring

Configurable response threshold (function can be switched off)

Thermocouples

Measured variable

Temperature

Measuring range

Assignable

Span

Min. 50 ? (90 °F) x 1/scaling factor

Measuring range limits

Depending on type of thermocouple element

Thermocouple element

• Type B

Pt30 %Rh/Pt6 %Rh (DIN IEC 584)

• Type C

W5%-Re (ASTM 988)

• Type D

W3%-Re (ASTM 988)

• Type E

NiCr/CuNi (DIN IEC 584)

• Type J

Fe/CuNi (DIN IEC 584)

• Type K

NiCr/Ni (DIN IEC 584)

• Type L

Fe-CuNi (DIN 43710)

• Type N

NiCrSi-NiSi (DIN IEC 584)

• Type R

Pt13 %Rh/Pt (DIN IEC 584)

• Type S

Pt10 %Rh/Pt (DIN IEC 584)

• Type T

Cu/CuNi (DIN IEC 584)

• Type U

Cu/CuNi (DIN 43710)

Special type (-10 mV ? UTC ? 100 mV)

Characteristic curve

Temperature-linear, voltage-linear or customer-specific

Type of connection

• Normal connection
• Averaging connection
• Mean-value connection
• Differential connection

Reference junction compensation

None, device-internal measurement, external measurement or predefined fixed value

Sensor breakage monitoring

Function can be switched off

mV sensors

Measured variable

DC voltage

Measuring range

Assignable

Span

Min. 4 mV

Input range

-120 ... +1000 mV

Characteristic curve

Voltage-linear or customer-specific

Overload capacity of inputs

Max. ± 3.5 V

Input resistance

? 1 M?

Sensor current

Approx. 180 ?A

Sensor breakage monitoring

Function can be switched off

V sources

Measured variable

DC voltage

Measuring range

Assignable

Characteristic curve

Voltage-linear or customer-specific

Input range/min. Span

• Devices with 7NG3242-xxxx1 or 7NG3242-xxxx0 with U/I plug

-1.2 ... + 10 V/0.04 V

• Devices with 7NG3242-xxxx2

-12 ... +100 V/0.4 V

• Devices with 7NG3242-xxxx3

-120 V ... +140 V/4.0 V

Sensor breakage monitoring

Not possible

?A-, mA sources

Measured variable

DC voltage

Measuring range

Assignable

Characteristic curve

Current-linear or customer-specific

Input range/min. Span

• Devices with 7NG3242-xxxx4

-12 ?A ... +100 ?A/0.4 ?A

• Devices with 7NG3242-xxxx5

-120 ?A ... +1000 ?A/4 ?A

• Devices with 7NG3242-xxxx6

-1.2 mA ... +10 mA/0.04 mA

• Devices with 7NG3242-xxxx7 or 7NG3242-xxxx0 with U/I plug

-12 mA ... +100 mA/0.4 mA

• Devices with 7NG3242-xxxx8

-120 mA ... +1000 mA/4 mA

Sensor breakage monitoring

Not possible

Output

Output signal

Load-independent direct current 0/4 ... 20 mA, can be switched to load-independent DC voltage 0/2 ... 10 V using plug-in jumpers

Current 0/4 ... 20 mA

• Overrange

-0.5 ... +23.0 mA, infinitely adjustable

• Output range following sensor fault (conforming to NE43)

-0.5 ... +23.0 mA, infinitely adjustable

• Load

? 650 ?

• No-load voltage

? 30 V

Voltage 0/2 ... 10 V

• Overrange

-0.25 ... +10.75 V, infinitely adjustable

• Output range following sensor fault

-0.25 ... +10.75 V, infinitely adjustable

• Load resistance

? 1 k?

• Load capacitance

? 10 nF

• Short-circuit current

? 100 mA (not permanently short-circuit-proof)

• Electrical damping

• adjustable time constant T₆₃

0 ... 100 s, in steps of 0.1 s

• Current source/voltage source

Infinitely adjustable within the entire operating range

Sensor fault/limit signaling

By operation indicator, relay output or HART interface

Operation indicator

Flashing signal

• Limit violation

Flashing frequency 5 Hz

• Sensor fault

Flashing frequency 1 Hz

Relay outputs

Either as NO or NC contact with 1 changeover contact

• Switching capacity

? 150 W, ? 625 VA

• Switching voltage

? 125 V DC, ? 250 V AC

• Switching current

?  2.5 A DC

Sensor fault

Signalling of sensor or line breakage and sensor short-circuit

Limit monitoring

• Operating delay

0 ... 10 s

• Monitoring functions of limit module

• Sensor fault (breakage and/or short-circuit)
• Lower and upper limit
• Window (combination of lower and upper limits)
• Limit and sensor fault detection can be combined

• Hysteresis

Configurable between 0 and 100 % of measuring range

Auxiliary power

Universal power supply unit

115/230 V AC/DC or 24 V AC/DC

Tolerance range for power supply

• With 115/230 V AC/DC PSU

80 ... 300 V DC; 90 ... 250 V AC

• With 24 V AC/DC PSU

18 ... 80 V DC; 20.4 ... 55.2 V AC (in each case interruption-resistant up to 20 ms in the complete tolerance range)

Tolerance range for mains frequency

47 ... 63 Hz

Power consumption with

• 230 V AC

? 5 VA

• 230 V DC

? 5 W

• 24 V AC

? 5 VA

• 24 V DC

? 5 W

Electrical isolation

Electrically isolated circuits

Input, output, power supply and sensor fault/limit monitoring output are electrically isolated from one another. The HART interface is electrically connected to the output.

Working voltage between all electrically isolated circuits

The voltage U_rms between any two terminals must not exceed 300 V

Measuring accuracy

Accuracy

• Error in the internal reference junction

? 3 °C ± 0.1 °C / 10 °C (? 5.4 °F ± 0.18  °F / 18 °F)

• Error of external reference junction terminal 7NG3092-8AV

? 0.5 °C ± 0.1 °C / 10 °C (? 0.9 °F ± 0.18 °F / 18 °F)

• Digital output

See "Digital error"

• Analog output I_AN or U_AN

? 0.05 % of meas. span plus digital error

Influencing effects (referred to the digital output)

Compared to the max. measuring span:

• Temperature drift

? 0.08 % / 10 °C (? 0.08 % / 18 °F)

? 0.2 % in the range -10 ... +60 °C (14 ... 140 °F)

• Long-term drift

? 0.1 % / year

Influencing effects referred to the analog output I_AN or U_AN

Compared to the measuring span:

• Temperature drift

? 0.08 % / 10°C (? 0.08 % / 18 °F)

? 0.2 % in the range -10 ... +60 °C (14 ... 140 °F)

• Power supply

? 0.05 % / 10 V

• Load with current output

? 0.05 % on change from 50 ? to 650 ?

• Load with voltage output

? 0.1 % on change in the load current from 0 mA to 10 mA

• Long-term drift (start-of-scale value, measuring span)

? 0.03 % / month

Response time (T₆₃ without electrical damping)

? 0.2 s

Insulation tests

Auxiliary power relative to input and output

3.54 kV DC; 2 s

Input relative to output and limit monitor

2.13 kV DC; 2 s

Output relative to limit monitor

2.13 kV DC; 2 s

PE/ground conductor relative to auxiliary power, input, output, and limit monitor

0.71 kV AC; 2 s

Electromagnetic compatibility

According to EN 61326 and NAMUR NE21

Certificates and approvals

Intrinsic safety

• for 7NG3242-xAxxx

II (1) G [Ex ia Ga] IIC

• for 7NG3242-xBxxx

II (1) D [Ex ia Da] IIIC

EC type-examination certificate

TUV (German Technical Inspectorate) 01 ATEX 1675

Other certificates

EAC Ex (GOST)

Conditions of use

Installation conditions

Location (for devices with explosion protection)

• Transmitters

Outside the hazardous area

• Sensor

Within hazardous area Zone 1 (also in Zone 0 in conjunction with the prescribed protection requirements for the sensor)

Ambient conditions

Ambient temperature

-25 ... +70 °C (-13 ... +158 °F)

Storage temperature

-40 ... +85 °C (-40 ... +185 °F)

Climatic class

• Relative humidity

5 ... 95 %, no condensation

Design

Weight

Approx. 0.24 kg (0.53 lb)

Enclosure material

PBT, glass-fibre reinforced

Degree of protection according to IEC 529

IP20

Degree of protection according to VDE 0100

Protection class I

Type of installation

35-mm DIN rail (1.38 inch) (EN 50022) or 32-mm G-type rail (1.26 inch) (EN 50035)

Electrical connection / process connection

Screw plug connectors, max. 2.5 mm? (0.01 inch?)

Parameterization interface

Protocol

HART, version 5.9

Load with connection of

• HART communicator

230 ... 650 ?

• HART modem

230 ... 500 ?

Software for PC/laptop

SIMATIC PDM version V5.1 and later

°C / (°F)

?

°C / (°F)

IEC 751

• Pt10

-200 ... +850
(-328 ... +1562)

20

3.0 (5.4)

• Pt50

-200 ... +850
(-328 ... +1562)

50

0.6 (1.1)

• Pt100

-200 ... +850
(-328 ... +1562)

100

0.3 (0.5)

• Pt200

-200 ... +850
(-328 ... +1562)

100

0.6 (1.1)

• Pt500

-200 ... +850
(-328 ... +1562)

100

1.0 (1.8)

• Pt1000

-200 ... +850
(-328 ... +1562)

100

1.0 (1.8)

JIS C 1604-81

• Pt10

-200 ... +649
(-328 ... +1200)

20

3.0 (5.4)

• Pt50

-200 ... +649
(-328 ... +1200)

50

0.6 (1.1)

• Pt100

-200 ... +649
(-328 ... +1200)

100

0.3 (0.5)

DIN 43760

• Ni50

-60 ... +250
(-76 ... +482)

50

0.3 (0.5)

• Ni100

-60 ... +250
(-76 ... +482)

100

0.3 (0.5)

• Ni120

-60 ... +250
(-76 ... +482)

100

0.3 (0.5)

• Ni1000

-60 ... +250
(-76 ... +482)

100

0.3 (0.5)

?

?

?

Resistance (linear)

0 ... 24

5

0.08

0 ... 47

15

0.06

0 ... 94

30

0.06

0 ... 188

50

0.08

0 ... 375

100

0.1

0 ... 750

100

0.2

0 ... 1500

75

1.0

0 ... 3000

100

1.0

0 ... 6000

100

2.0

°C / (°F)

°C (°F)

Type B

100 ... +1820
(+212 ... +3308)

3 (5.4)

Type C

0 ... +2300
(+32 ... +4172)

2 (3.6)

Type D

0 ... +2300
(+32 ... +4172)

1 (1.8)

Type E

-200 ... +1000
(-328 ... +1832)

1 (1.8)

Type J

-210 ... +1200
(-346 ... +2192)

1 (1.8)

Type K

-200 ... +1372
(-328 ... +2501)

1 (1.8)

Type L

-200 ... +900
(-328 ... +1652)

2 (3.6)

Type N

-200 ... +1300
(-328 ... +2372)

1 (1.8)

Type R

-50 ... +1760
(-58 ... +3200)

2 (3.6)

Type S

-50 ... +1760
(-58 ... +3200)

2 (3.6)

Type T

-200 ... +400
(-328 ... +752)

1 (1.8)

Type U

-200 ... +600
(-328 ... +1112)

2 (3.6)

mV sources (linear)

mV

?V

-1  ... +16

35

-3 ... +32

20

-7 ... +65

20

-15 ... +131

50

-31 ... +262

100

-63 ... +525

200

-120 ... +1000

300

V sources (linear)

V

mV

-1.2 ... +10

3

-12 ... +100

30

-120 ... +140

300

?A/mA sources (linear)

?A/mA

?A

-12 ... +100 ?A

0.05

-120 ... +1000 ?A

0.5

-1.2 ... +10 mA

5

-12 ... + 100 mA

50

-120 ... +1000 mA

500