Type 8188

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Electrical data

Operating voltage (U

n)

• Without display/configuration module:

– 9.6…35 V DC

– 9.6…30 V DC (Ex ia instrument)

• With display/configuration module:

– 16…35 V DC

– 16…30 V DC (Ex ia instrument)

Power source (not supplied)

Limited power source according to UL/EN 60950-1 standards or limited energy circuit

according to UL/EN 61010-1 §9.4

DC reverse polarity protection

Yes

Residual ripple (for DC)

For 9.6 V < U

n < 18 V: ≤ 0.7 Veff (16…400 Hz)

For 18 V < U

n < 35 V: ≤ 1.0 Veff (16…400 Hz)

Overvoltage category according to

IEC 61010‑1

Category III

Protection class according to

IEC 61010‑1

Class III

Starting current

≤ 3.6 mA, ≤ 10 mA for 5 ms after the switching on

Load resistor

(U

n - Umin.)/0.022 A

Output

4…20 mA/HART

Range of the output signal

3.8…20.5 mA/HART (default setting)

Signal resolution

0.3 µA

Max. output current

21.5 mA

Fault signal

Current output: last valid measured value, ≥ 21 mA or < 3.6 mA (adjustable)

Voltage supply cable

• Cable diameter: 5…9 mm

• Wire cross-section (spring-loaded terminals):

– Massive wire, stranded wire: 0.2…2.5 mm2 (AWG 24…14)

– Stranded wire with end sleeve: 0.2…1.5 mm2 (AWG 24…16)

Process/Port connection & communication

Process connection

Thread G or NPT ‑ ¾", 1"

Electrical connection

Cable gland M20 x 1.5

Approvals and Certificates

Directives

CE directive

The applied standards, which verify conformity with the EU Directives, can be found on the

EU Type Examination Certificate and/or the EU Declaration of conformity (if applicable)

NAMUR recommendation

• NE21 – Electromagnetic compatibility of equipment

• NE43 – Signal level for fault information from measuring transducers

• NE53 ‑ Compatibility of field devices and display/adjustment components

• NE107 ‑ Self‑monitoring and diagnosis of field devices

Certification

ATEX/IECEx: EN IEC 60079‑0, EN 60079‑11, EN 60079‑26

Detailed information can be found in chapter “2.1. Certifications” on page 6.

Environment and installation

Ambient temperature

Operation and storage: ‑ 40…+ 80 °C (‑ 40…+ 176 °F) (with display/configuration module)

Temperature derating

Depending on the device variant.

Detailed information can be found in chapter “5.3. Temperature derating diagram” on

page 13.

Relative air humidity

20…85 %, without condensation

Height above sea level

Max. 2000 m (by default; max. 5000 m with connected overvoltage protection)

Degree of protection according to

IEC/EN 60529

IP66/IP67 with cable plug mounted and tightened M20 x 1.5

Pollution degree

Degree 4 (when used with fulfilled housing protection)

1.) Depending on the mounting conditions, deviations can occur which can be rectified by adapting the adjustment or changing the measured value offset in the DTM service

mode.

2.) The blocking distances can be optimized by a false signal suppression.

3.) Time span, after a sudden change in the measuring distance of max. 0.5 m in liquid applications, until the output signal has assumed for the first time 90 % of the final value

(IEC 61298-2).