
H/US/8000/03-2018/00 Klay Instruments
CONTENTS
SECTION PAGE
1 Introduction 2/8
1.1 Description Series 8000-SAN 2/8
1.2 Description Series 8000 2/8
1.3 Barometric reference 2/8
2 Dimensional Drawing 3/8
2.1 Dimensional Drawing 8000-SAN 3/8
2.2 Dimensional Drawing 8000 3/8
2.3 Installing Weld-on nipple 3/8
3 Installing Transmitter 4/8
3.1 Installing Transmitter 8000-SAN 4/8
3.2 Installing Transmitter 8000 4/8
3.3 Mounting Position 4/8
3.4 Mounting Position Effect 4/8
3.5 Calibration 4/8
SECTION PAGE
4 Wiring 5/8
4.1 Digital Local Indicator 5/8
4.2 Hazardous area (Ex) 5/8
4.3 Functional Safety –SIL 6/8
4.4 Traceability year of manufacturing 6/8
4.5 CE / EMC-rules 6/8
4.6 External Load 6/8
5 Specifications 7/8
6 Precautions and Warnings 8/8
Attachment: EU-Declaration of conformity
1 INTRODUCTION
The Series 8000 and Series 8000-SAN are solid-state pressure and level transmitters based upon a bridge resistive
silicon sensor, with a very high burst pressure. The sensor element is mounted in a stainless steel foot. A strong
stainless steel "flush" diaphragm protects the sensor from the process medium. Special oil fills the chamber
surrounding the sensor and transfers pressure from the flush mounted diaphragm to the sensor.
Pressure on the sensor element creates a very small deflection of the silicon substrate and bridge network. The
resulting strain in the silicon resistors causes a change in the bridge resistance that is proportional to the pressure
applied. The transmitter electronics detects this change in bridge resistance and converts it into 4-20 mA. The
amplifier system is based on a single Integrated Circuit, which ensures a perfect linearity in the 4-20 mA output.
The Series 8000 and 8000-SAN are available as SIL2, proven in use (Option G200).
1.1 DESCRIPTION SERIES 8000-SAN
The Series 8000-SAN are specially designed with a flush mounted diaphragm so they fully meet the needs of the
food, pharma and chemical industries. The Series 8000-SAN is available as 3-A version (Sanitary Standard - Option
G153) and EHEDG (Sanitary standard - Option G150). Standard the wetted parts are made of AISI 316, other
materials are available, like Hastelloy C. Various process connections can be delivered, such as Tri-Clamp (1.5” ,2”
and 3”), SMS (1.5” and 2”), dairy milk couplings (DN 25, 40 and 50), flanges (DIN and ANSI) and sanitary weld-on
nipples (ø 1.89, 2.44 and 3.35 inch.)
1.2 DESCRIPTION SERIES 8000
The Series 8000 are specially designed for the pulp and paper or similar industries, where clogging is a problem.
The very compact construction of the Series 8000 permits flush installation with the tank- or pipe wall. Standard the
wetted parts are made of AISI 316, a lot of other materials like Hastelloy C are available as an option.
All transmitters are fully temperature compensated, which means that various process temperatures have nearly no
effect on the accuracy of the output signal. When a failure occurs, the transmitter is repairable. However, for
optimum accuracy the transmitter has to be send back to the factory.
1.3 BAROMETRIC REFERENCE
The Series 8000 is in basic a so-called Relative Transmitter which means that barometric changes will not affect the
zero (4 mA). The venting is placed in the electronic housing and is the barometric reference to atmospheric
pressure. The venting must be kept clean.