Type 8791

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1.6. Linear remote position sensor (ELEMENT Type 8798)

Note:

When the positioner is mounted remotely from the actuator, the length of the pneumatic control lines influences the dynamics and achieva-

ble accuracy of the positioner control loop. The length of the control air lines should therefore be selected as short as possible.

Product properties

Actual position signal

Digital (RS485)

Detection range of the sensor

3…45 mm (stroke range of valve spindle)

Electrical data

Operating voltage

24 V DC ± 25 %, UL: NEC Class 2

Protection class

III according to DIN EN 61140

Power consumption

< 0.3 W

Electrical connection

Cable gland (cable length)

1x M16 × 1.5 (cable Ø5…10 mm) on screw terminals (0.14…1.5 mm²)

Connection cable

10 m

Approvals and conformities

Protection class

IP65 and IP67 according to EN 60529, 4X according to NEMA 250 standard

Explosion protection

Ignition protection class

II 3G Ex ec IIC T4 Gc

II 3D Ex tc IIIC T135 °C Dc

North America (USA/Canada)

UL Recognized for the USA and

Canada

cULus certificate: 238179

Further information can be found in chapter “2.5. North America (USA/Canada)” on page 9.

Others

China Compulsory Certification (CCC)

The products with Ex approval are suitable for import and use for hazardous applications in

China. Further information can be found in chapter “2.6. Others” on page 10.

Further information can be found in chapter “2. Approvals and conformities” on page 9.

Environment and installation

Ambient temperature

- 25…+ 80 °C

1.7. Rotative remote position sensor (NAMUR)

Note:

When mounting the remote positioner away from the actuator, the length of the pneumatic control lines influences the dynamics and

accuracy of the position control loop. The length of the control air lines should therefore be as short as possible.

Product properties

Stroke range when mounted to linear

actuator

3…130 mm, depending on the lever in the attachment kit

Actual position signal

Digital (RS485)

Measuring range

Rotation angle 30°…180°

Electrical data

Operating voltage

10…30 V DC

Protection class

III according to DIN EN 61140

Power consumption

< 0.8 W

Electrical connection

2 m round cable (shielded)

Approvals and conformities

Protection class

IP65 according to EN 60529

North America (USA/Canada)

UL Recognized for the USA and

Canada

cULus certificate: E226909

Further information can be found in chapter “2.5. North America (USA/Canada)” on page 9.

Further information can be found in chapter “2. Approvals and conformities” on page 9.

Environment and installation

Ambient temperature

- 25…+ 80 °C