INOR C520, C520X User Manual

C520 / C520X /C520S / C520XS

HART Compatible,
Universal, Dual-input
2-wire Transmitters

The 520 transmitters are universal, isolated, dual-input temperature transmitters

with additional voltage and resistance input. Typical characteristics are

the high accuracy, reliable measurements, product safety and user efciency.

The transmitters are compatible with the HART 6 protocol

offering extended diagnostic information.

High Measurement Accuracy

Long-term stability Drift over 5 years is the maximum of ± 0.05 °C or ±0.05 % of span
High precision Example Pt 100: ± 0,1 °C or 0,05 % of span
Low temperature drift ±0.005 % of span per °C

High Reliability

Dual Sensor Input With for example Pt100, 2- & 3-wire, T/C, Resistance and Voltage
Sensor Drift Detection One sensor with double elements, monitoring the temperature difference
Sensor Back-up Automatic switchover to backup sensor
Robust design 10g vibrations, robust terminals

High Safety

SIL 2 According to IEC 61508-2
NAMUR Compliant to NE 21, NE 43, NE 53, NE 89 and NE 107
EX-approvals ATEX, IECEx: Intrinsically safe

High User Efciency

Easy conguration, installation and maintenance with ConSoft, HART6 Protocol, EDD plus DTM/FDT

enabled systems

INOR Process AB, PO Box 9125, SE-200 39 Malmö, Sweden, Phone: [phone], Fax: [phone], E-mail: [e-mail]

INOR Transmitter OY, Unikkotie13, FI-01300 Vantaa, Finland, Phone:[phone], Fax: [phone], E-mail: support.@inor.se

INOR Transmitter GmbH, Am Bocksborn 5 D-63571, Gelnhausen, Germany, Phone: [phone], Fax: [phone], E-mail: [e-mail]

KROHNE Temperature Division INOR, 7 Dearborn Road, Peabody, MA 01960, USA, Phone: [phone], Fax: [phone], E-mail: [e-mail]

www.inor.com

Features of the 520 transmitters

Basic accuracy and long-term stability

The combination of a high-efcient 50-point linearization and an electronic design based on the most precise and “zero-drift” tech­nology results in a high basic accuracy and excellent long-term stability. The drift over 5 years is guaranteed to maximum of ±0.05
°C or ±0.05 % of the measuring span.

Ambient temperature stability

Features like continuous self-calibration of the input AD converter in every measurement cycle and a “zero-drift” current generation
of the output DA converter have strongly reduced the ambient temperature inuence to a minimum.

Customized linearization

For resistance and mV inputs, the 50-point Customized Linearization can provide a correct process value, in a choice of engineering

units, for a sensor with non-linear input/output relation.

Adjustable ltering

For smoothing down instabilities on the input, an additional lter, with an adjustable ltering level can be activated.

Sensor matching doubles the accuracy

This function compensates for deviations (compared to actual standard values) in connected sensors. A reduction of the total meas­urement error, for the sensor/transmitter combination, of more than 50 % is typical.

Sensor backup

Dual-sensor input allows for backup between two sensors. Should a lead break or short-circuit be detected on one of the sensor
circuits, an automatic switchover to the intact sensor will occur.

Single-sensor or dual-sensor input

The dual-sensor input for RTD, Resistance or Thermocouple allows for 3 output alternatives, each represented by a 4-20 mA signal:

1. The measured value of sensor 1

2. The measured value of sensor 2

3. A calculated value from sensor 1 and 2, e.g. Difference, Average, Minimum and Maximum.

Sensor drift monitoring

If an RTD or thermocouple with double sensor elements is used, the 520 transmitters can detect sensor drift by checking the read-

ing from both elements. If the difference is above a user-dened level, this will be indicated in ConSoft and with a diagnostic HART

message, and the output signal can be forced upscale or downscale.

Sensor isolation monitoring

The isolation resistance of thermocouples and RTD’s as well as the cabling between sensor and transmitter is being monitored. If

the isolation is below a user-dened level, this will be indicated in ConSoft and with a diagnostic HART message, and the output

signal can be forced upscale or downscale. This feature requires an extra lead inside the thermocouple or RTD.

Measurements with RTD’s and potentiometers

The 520 transmitters accept inputs from standardized Platinum RTDs acc. to IEC 60751 and JIS C 1604, Nickel RTD’s acc. to DIN
43760 and Cu10 acc. to Edison Cu Windings No. 15.

Input for plain resistance, such as potentiometers, up to 4000 Ω is available.
2-, 3- or 4-wire connection can be chosen for single-input and 2- or 3-wire connection for dual-input (See Input connections below) .

Measurements with Thermocouples and plain voltage

The 520 transmitters accept inputs from 10 types of standardized thermo¬couples as well as plain mV input up to 1000 mV.
For T/C input, the CJC (Cold Junction Compensation) is either fully automatic, by means of an internal accurate sensor, external
with Pt100 sensor or xed by entering an external CJ temperature.

SIL 2 compliance

Based on a hardware assessment according to IEC 61508-2, consisting of a FMEDA done by Exida, C520S and C520XS are suitable

for use in SIL 2 rated Safety Instrumented Systems (SIS). See the Safety Manual for details.

ConSoft conguration software

The PC conguration software, ConSoft, is a versatile and user-friendly tool for transmitter conguration, loop check-up and sensor
diagnostics. It runs on Windows NT, 2000, XP, Vista, Windows 7 and Windows 8. All features described in this data sheet are handled

in a simple and fail-safe way.

ConSoft is part of the complete Conguration Kit ICON, which also contains a USB Interface and necessary cables.

Conguration alternatives

In addition to ConSoft (see above) the following conguration alternatives are available:
Hand held communicator, e.g. FC375 (Emerson)

Management systems, e.g. AMS (Emerson) and PDM (Siemens)

EDD enabled systems – “520 EDD” available on our website.
DTM/FDT enabled systems – “520 DTM” available on our website.

HART 6 compliance

The 520 transmitters are fully compliant with the HART 6 protocol as well as the previous HART 5.
HART 6 offers the possibility to receive diagnostic information such as sensor errors or sensor conditions, input wiring resistance

too high, sensor backup mode, transmitter error etc. See User Instructions for details.

2

Specications

Input RTD

Pt100 (IEC 60751, α=0.00385) -200 to +850 °C
Pt X (10 ≤ X ≤ 1000) (IEC 60751, α=0.00385) Corresp. to max. 4 000 Ω

Pt100 (JIS C 1604, α=0.003916) -200 to +850 °C
Ni100 (DIN 43760) -60 to +250 °C
Ni120 (Edison Curve No. 7) -60 to +250 °C
Ni1000 (DIN 43760) -50 to +180 °C
Cu10 (Edison Copper Windings No. 15) -50 to +200 °C
Input connection See “Input connections” below

Sensor current ≤300 µA
Maximum sensor wire resistance 3- and 4-wire connection 50 Ω/wire
2-wire connection Compensation for 0 to 40 Ω loop resistance

Input Resistance / Potentiometer

Range 0 to 4000 Ω
Range, potentiometer 100 to 4000 Ω

Zero adjustment Within range

Minimum span 10 Ω

Customized linearization Up to 50 points

Sensor current ≤300 µA

Input connections See “input connections” below

Maximum sensor wire resistance 50 Ω / wire

Input Thermocouple

T/C B Pt30Rh-Pt6Rh (IEC 60584) 400 to +1800 °C
T/C C W5-Re (ASTM E 988) 0 to +2315 °C
T/C D W3-Re (ASTM E 988) 0 to +2315 °C

T/C E NiCr-CuNi (IEC 60584) -200 to +1000 °C
T/C J Fe-CuNi (IEC 60584) -200 to +1000 °C
T/C K NiCr-Ni (IEC 60584) -200 to +1350 °C
T/C N NiCrSi-NiSi (IEC 60584) -250 to +1300 °C

T/C R Pt13Rh-Pt (IEC 60584) -50 to +1750 °C
T/C S Pt10Rh-Pt (IEC 60584) -50 to +1750 °C

T/C T Cu-CuNi (IEC 60584) -200 to +400 °C

Input impedance >10 MΩ

Input connections See “Input connections” below

Maximum wire loop resistance 10000 Ω (Including T/C sensor)

Cold Junction Compensation (CJC) Internal, external (Pt100) or xed

Input Voltage

Range -10 to +1000 mV

Zero adjustment Within range

Minimum span 2 mV

Customized linearization Up to 50 points

Input impedance >10 MΩ

Input connections See “Input connections” below

Maximum wire loop resistance 500 Ω

Double inputs for RTD and Thermocouple

Measure mode Single temperature T1 or T2
Differential temperature T1 - T2 or T2 - T1
Average temperature 0.5 * (T1 + T2)

Minimum temperature Lowest of T1 and T2
Maximum temperature Highest of T1 and T2

Sensor Backup Single or Average mode Failure on one sensor activates automatic
switchover to the other sensor

Sensor Drift Monitoring Single or Average mode Adjustable acceptance level of the

differential temperature of sensor 1 and 2

3

Output

Output signal 4-20 mA, 20-4 mA or customized.

Temperature linear for RTD & T/C

HART protocol HART 6
HART physical layer FSK 1200

Representation T1 or T2 or Difference, Average, Min
or Max of T1 and T2
Update time Single input: ~300 ms; Double input: ~600 ms
Resolution 1.5 µA

Adjustable output ltering Level 0 to 7 (0=off)

Permissible load 635 Ω @ 24 VDC incl. 250 Ω loop resistance

NAMUR Compliance Current limitations and failure currents
acc. to NAMUR, NE 43

Sensor Isolation Monitoring

Detection of low sensor isolation Adjustable acceptance level for

minimum isolation

Sensor Drift Monitoring

Detection of deviation between two sensors Adjustable acceptance level for maximum

deviation

Sensor Failure Effects

Output control acc. to NAMUR NE 43 Individual upscale/downscale action for Sensor

break, Sensor short-circuit, Sensor drift

(only double RTD or T/C) and Low sensor isolation
Output control acc. to NAMUR NE 89 Individual upscale/downscale action when

Maximum sensor wire resistance exceeded.

Status information via HART communication Sensor break, Sensor short-circuit, Sensor drift,
acc. to NAMUR NE 107 and via ConSoft Low sensor isolation and Sensor redundancy

switchover (Sensor backup)

General data

Line frequency rejection Selectable 50 Hz, 60 Hz or 50/60 Hz

Isolation 1500 VAC, 1 min
Ex-approvals C520X/C520XS ATEX: II 1G Ex ia IIC T6...T4 Ga
IECEx: Ex ia IIC T6...T4 Ga
Power supply, polarity protected C520/C520S 10 to 36 VDC, Standard power supply
C520X/C520XS 10 to 30 VDC, I.S. power supply

Environment conditions

Ambient temperature Storage -40 to +85 °C
Operating -40 to +85 °C

Humidity 5 to 95 %RH
Vibration Acc. to IEC 60068-2-6, test Fc, 10 to 2000 Hz, 10 g

Shock Acc. to IEC-60068-2-31, test Ec

EMC Standards EN 61326-1:2006; EN 61326-3-1:2009, NAMUR
NE 21

Immunity performance Criteria A, Surge test influence max. ±0.5 %
of span

Housing

Mounting DIN B head or larger, DIN-rail (with adapter)
Material PC/ABS, RoHS compliant
Flammability acc. to UL V0

Connection Single/stranded wires Max. 1.5 mm², AWG 16
Weight 50 g
Protection, housing / terminals IP 65 / IP 00

4

Accuracy and stability

Accuracy (reference 20 °C) RTD and Thermocouple See table below
Resistance Digital accuracy¹) 0-1000 Ω: Max of ±20 mΩ or ±0.020 % of MV
1000-4000 Ω: ±0.025 % of MV or max 0.5 Ω
Resistance Analog accuracy¹
Voltage Digital accuracy¹
Voltage Analog accuracy¹

)

)

)

±0.03 % of span
±5 µV or ±0.010 % of MV
±0.03 % of span

Temperature inuence RTD and Thermocouple See table below

Resistance ±0.005 % of span per °C
Voltage ±0.005 % of span per °C

Cold Junction Compensation (CJC) ±0.5 °C within ambient temperature -40 to +85 °C
Temperature inuence CJC ±0.005 °C per °C
Sensor wire inuence RTD and Resistance, 2-wire Adjustable wire resistance compensation
RTD and Resistance, 3-wire Negligible, with equal wire resistance
RTD and Resistance, 4-wire Negligible
Thermocouple and Voltage Negligible
Supply voltage inuence Within specied limits <±0.001 % of span per V
Long-term drift Max of ±0.01 °C or ±0.01 % of span per year

)

¹

Total accuracy = Sum of digital and analog accuracy, calculated as an RMS (Root Mean Square) value

Accuracy specications and minimum spans for RTD and Thermocouples

Conformance level 95 % (2σ)

Input type Temperature range Minimum span Accuracy Temperature Inuence

Maximum of: (Deviation from ref. temp. 20 °C)
RTD Pt100 -200 to +850 °C 10 °C ±0.1 °C or ±0.05 % of span ±0.005 % of span per °C
RTD PtX 1) Corresp. to max. 4 kΩ 10 °C ±0.1 °C or ±0.05 % of span ±0.005 % of span per °C

RTD Ni 100 -60 to +250 °C 10 °C ±0.1 °C or ±0.05 % of span ±0.005 % of span per °C
RTD Ni 120 -60 to +250 °C 10 °C ±0.1 °C or ±0.05 % of span ±0.005 % of span per °C
RTD Ni 1000 -50 to + 180 °C 10 °C ±0.1 °C or ±0.05 % of span ±0.005 % of span per °C

RTD Cu10 -50 to +200 °C 83 °C ±1.5 °C or ±0.1 % of span ±0.01 % of span per °C
T/C type B +400 to +1800 °C 700 °C ±1 °C or ±0.1 % of span 2) ±0.005 % of span per °C
T/C type C 0 to +2315 °C 200 °C ±1 °C or ±0.1 % of span 2) ±0.005 % of span per °C
T/C type D 0 to +2315 °C 200 °C ±1 °C or ±0.1 % of span 2) ±0.005 % of span per °C
T/C type E -200 to +1000 °C 50 °C ±0.25 °C or ±0.1 % of span 2) ±0.005 % of span per °C

T/C type J -200 to +1000 °C 50 °C ±0.25 °C or ±0.1 % of span 2) ±0.005 % of span per °C
T/C type K -200 to +1350 °C 50 °C ±0.25 °C or ±0.1 % of span 2) ±0.005 % of span per °C
T/C type N -100 to +1300 °C 100 °C ±0.25 °C or ±0.1 % of span 2) ±0.005 % of span per °C
T/C type N -250 to -100 °C 100 °C ±1 °C 2) ±0.05 % of span per °C

T/C type R -50 to +1750 °C 300 °C ±1 °C or ±0.1 % of span 2) ±0.005 % of span per °C
T/C type S -50 to +1750 °C 300 °C ±1 °C or ±0.1 % of span 2) ±0.005 % of span per °C
T/C type T -200 to +400 °C 50 °C ±0.25 °C or ±0.1 % of span 2) ±0.005 % of span per °C

1)

(10 ≤ X ≤ 1000)

2)

CJC error is not included

5

RTD

RTD

RTD

RTD 1

RTD 2

RTD 1

RTD 2

RTD

RTD

RTD

RTD 1

RTD 2

RTD 1

RTD 2

T/C

100%0%

100%0%

100%0%

100%0%

RTD

RTD

RTD

RTD 1

RTD 2

RTD 1

RTD 2

mV

T/C 1

T/C

T/C 2

T/C

RTD

mV 1

mV 2

100%0%

100%0%

100%0%

100%0%

Input connections

RTD

RTD

RTD

RTD 1

RTD 2

RTD 1

RTD 2

mV

T/C 1

T/C

T/C 2

T/C

RTD

R

LOAD

I

OUT

mV 1

mV 2

100%0%

100%0%

100%0%

100%0%

10/0.39

RTD

2-wire connection

Low isolation

detection lead

RTD

3-wire connection

Low isolation

detection lead

RTD

4-wire connection

Low isolation

detection lead

Double RTD

2-wire connection

Low isolation

detection lead

Double RTD

3-wire connection

Output connections

Output load diagram

R

(Ω) =(U-10)/0.022

LOAD

A-B and B-C are possible
connections for HART
modem or Communicator

Resistance

2-wire connection

Low isolation

detection lead

Resistance

3-wire connection

Low isolation

detection lead

Resistance

4-wire connection

Low isolation

detection lead

Potentiometer

3-wire connection

Thermocouple

Low isolation

detection lead

Double thermocouple

Low isolation detection lead

Combined RTD & Thermocouple

(RTD also for remote CJC)

Low isolation detection lead

Voltage

mV

Double Voltage

mV

Dimensions

53/2.08

PC communication port

DIN-rail adapter

44.5/1.75

24/0.95

C520X

All information subject to change without notice.

C520

Supply voltage U (V DC)

Ordering information

C520 70C5200010

C520S, SIL 2 compatible

C520X 70C520X010

C520XS, SIL 2 compatible 70C520XS10
ICON PC conguration kit (USB-conn.) 70CFGUS001
Conguration 70CAL00001
Head mounting kit 70ADA00017
DIN-rail adapter 70ADA00015

6

70C5200S10

86DBQ00013 2018-04