MODEL: B6U

B6U SPECIFICATIONS

ES-7451 Rev.20 Page 3/6

http://www.m-system.co.jp/

1) K thermocouple, 0 – 1000°C

Absolute value accuracy (Table 1): 0.25°C

0.1% × 1000°C = 1°C > 0.25°C

CJC error (0.5°C) added: 1 + 0.5 = 1.5°C

1.5°C ÷ 1000°C × 100 = 0.15 %

➠ Overall accuracy including CJC error = ±0.15 % of span

2) K thermocouple, 50 – 150°C

Absolute value accuracy (Table 1): 0.25°C

0.1 % × (150 – 50)°C = 0.1°C < 0.25°C

CJC error (0.5°C) added: 0.25 + 0.5 = 0.75°C

0.75°C ÷ (150 – 50)°C × 100 = 0.75 %

➠ Overall accuracy including CJC error = ±0.75 % of span

• RTD

1) Pt 100, -200 – 800°C

Absolute value accuracy (Table 1): 0.15°C

0.15°C ÷ (800 – -200)°C × 100 = 0.015 % < 0.1 %

➠ Overall accuracy = ±0.1 % of span

2) Pt 100, 0 – 100°C

Absolute value accuracy (Table 1): 0.15°C

0.15°C ÷ 100°C × 100 = 0.15 % > 0.1 %

➠ Overall accuracy = ±0.15 % of span

STANDARDS & APPROVALS

Refer to the manuals to comply with the standards.

EU conformity:

ATEX Directive

Ex ia EN 60079-11

EMC Directive

EMI EN 61000-6-4

EMS EN 61000-6-2

RoHS Directive

EN 50581

Safety approval:

FM: Intrinsically safe

Class I, Division 1, Groups A, B, C and D

Class I, Zone 0, AEx ia IIC

T4, T5 and T6

(Class 3600)

(Class 3610)

(ANSI/ISA 60079-0)

(ANSI/ISA 60079-11)

FM: Nonincendive

Class I, Division 2, Groups A, B, C, and D

Class I, Zone 2, Group IIC

T4, T5 and T6

(Class 3600)

(Class 3611)

IECEx intrinsic safety

Ex ia IIC T4, T5 and T6 Ga

(IEC 60079-0)

(IEC 60079-11)

TIIS: Intrinsic safety

Ex ia IIC T5 X

ATEX Intrinsic safety

II 1G, Ex ia IIC, T4 , T5 and T6 Ga

(EN 60079-0)

(EN 60079-11)

Functional safety

(IEC 61508-1)

(IEC 61508-2)

(IEC 61511-1)

SAFETY PARAMETERS

Operating temperature

For IECEx, ATEX and FM:

T4: -40 to +80°C

T5: -40 to +65°C

T6: -40 to +50°C

For TIIS:

T5: -20 to +60°C

Ex-data:

• Output circuit

Ui (Vmax): 30 V

Ii (Imax): 96 mA

Pi (Pmax): 720 mW

Ci: 0 μF (TIIS Intrinsic Safety: ‘Negligible value')

Li: 0 mH (TIIS Intrinsic Safety: ‘Negligible value')

• Sensor circuit

Uo (Voc): 6.4 V (TIIS Intrinsic Safety: 6.0 V)

Io (Isc): 30 mA

Po: 48 mW

Co (Ca): 20 μF

Lo (La): 10 mH