Operating instructions for transmitter for temperatureheadmounting for Pt100, programmableType Series PA2250

LABOM Mess- und Regeltechnik GmbH Im Gewerbepark 13 27798 Hude GermanyHotline: +45 4408 804-444 Fax: +49 4408 804-100 e-mail: sales@labom.com www.labom.com

Operating Instruction BA_027_2019-08_10.00Page 1/4

BTA-No. 027 Rev. 1E5

Operating Instructions for transmitter for temperature,headmounting for Pt 100, programmable, Type sereies PA2250

Further information required? Hotline +49 (0) 4408 804-444

LABOM Mess- und Regeltechnik GmbH · P.O. Box 12 62 ∙ 27795 Hude ∙ Germany · Im Gewerbepark 13 ∙ 27798 Hude ∙ Germany Tel. +49 4408 804-0 ∙ Fax +49 4408 804-100 ∙ e-mail: info@labom.com ∙ www.labom.com

Mounting and operating

These operating instructions refer to installation, commissioning, servicing and adjustment. Statutory regulations, valid standards, additional technical details in the relevant data sheet, details of the type plate and any additional certificates are to be observed along with these operating instructions.

Installation, operation and maintenance of the instrument may be executed by authorized personnel, only, using suitable equipment.

Warning: If the instrument is used incorrectly it is possible that serious injuries or damage can occur!

Be sure connections to the process are sealed, tightened and secured in line with sound engineering practice.

The standard nominal pressure rating and the permissible operating temperature of the gasket should be observed for all process connections.

Process connections that are mechanically defective can cause injuries or give rise to process faults. Suitable precautions should be taken to avoid this. Bulb and measuring element are subjected to high pressures in gas expansion thermometers. Improper handling of these parts can result in personal injury.

Store and transport thermometers under dry, clean condition and, where possible, in their original packaging. Permissible storage temperature: -20°C to +60°C. Avoid shock and vibrations.

Essentially, thermometers consist of a bulb to which an indicating unit is rigidly connected. With bimetal thermometers the temperature is transmitted directly to the pointer by means of a shaft with flat spiral spring joint. Gas expansion thermometers, on the other hand, have an integrated pressure chamber at the bottom and an indicating unit with a spring-type element mounted securely on top. Unless otherwise specified, the lower edge of the screwing acts as the minimum depth of immersion.

The instruments will be supplied as per specification with various kinds of cases and process connections. Before mounting the instrument ensure that process connection, media compatibility, thermostability and meas. range are suitable for the process at hand.

Gaskets must be chosen that are suited to the process connection and resistant to the measured medium.

To minimize the measuring error due to heat dissipation, immerse the bulb as far as possible into the measured medium.

Measuring instruments that should not have any oil or grease residues in the process connection are marked „Free of oil and grease“.Vibrations and pulsating measured media can significantly affect theservice life of measuring elements. We recommend cases with liquid filling.

Operating with capillary: Lay the capillary securely and free of vibrations. The temperature influence on the capillary must be taken into consideration. If the capillary is exposed to process temperature, this must be calibrated at the factory.

Introduction Operating with clip-on bulb The bulb is slightly U-shaped, thus enabling easy mounting on piping by means of steel bands. The clip-on bulb should be completely insulated. Positionable version: When the bulb has been mounted, the case may be rotated once by ± 180° with respect to the pipeline, by loosening the screwing.

The instrument requires no maintenance. Safety instructions

Application instructions The loading capacity of the bulb depends on these parameters: measured medium, pressure of measured medium, temperature of measured medium, flow velocity, positioned length, material.

Thermowells

Thermowells allow thermometers to be fitted and removed during plants operation. By using the appropriate materials, they protect the device bulb from corrosion by aggressive media. They also provide protection from damage caused by high process pressures resp. mechanical vibrations resulting from flow currents. Before mounting, apply heat conducting pastes. The thermal resistance between thermowell and bulb can thereby be considerably improved. Adequate air cushions are to be provided when heat conducting pastes resp. oils are used, so as to avoid excessively high internal pressures caused by thermal expansion of the heat conducting medium. Water should also be prevent from entering, because the bulb and, where applicable, the protective tube could be destroyed by ice formation at low temperatures.

Transportation and storage

Designs and dimensions for protective tubes are laid down in EN 43772.

Accuracy Mechanical design

EN 13190, class 1 or class 2 The class designation does not cover any errors caused by linkage re-adjustments or the influence of capillaries. You may clear these errors by re-adjusting the trimming pointer.

Scale ranges Scale ranges, measuring ranges and error limits according to EN 13190. Triangles at the edge of the scale face mark the measuring range.

Mounting and operating

Ex approval

These operating instructions refer to installation, commissioning, servicing and adjustment. Statutory regulations, valid standards, additional technical details in the relevant data sheet, details of the type plate and any additional certificates are to be observed along with these operating instructions. Installation, operation and maintenance of the instrument may be executed by authorized personnel, only, using suitable equipment.

Warning: If the instrument is used incorrectly it is possible that serious injuries or damage can occur!

Prior to the disassembly of the pressure transmitter the impulse ducts between the measuring transmitter and the process have to be locked and relieved from pressure.

The standard nominal pressure rating and the permissible operating temperature of the gasket should be observed for all process connections. Operation outside the allowed nominal pressure rating, especially with clamp connections, is only possible with suitable clamps. In this case, note DIN 32676 for stipulations on heat resistance.

Pressure transmitters that are mechanically defective can cause injuries or give rise to process faults. Suitable precautions should be taken to avoid this.

The CE marking on the instruments certifies compliance with valid EU directives for bringing products to market within the European Union. The following directives are met: EMC directives EMC 2004/108/EG Pressure Equipment Directive PED 97/23/EG Ex directive ATEX 94/9/EG

Electrical equipment in hazardous areas should only be installed and commissioned by competent personnel. Modifications to devices and connections destroy the operating safety, the ex proofing and the guarantee. The limit values detailed in the certificate of conformity are to be observed certificate no. TüV 99 ATEX 1414 X marking II 1/2 G Ex ia IIC T4/T5/T6 Ga/Gb II 2 G Ex ia IIC T4/T5/T6 Gb

. Before mounting the instrument ensure that pressure range, overpressure resistance, media compatibility, thermostability and pressure port are suitable for the process at hand.

Conduct process installation before electrical installation. Measuring instruments that should not have any oil or grease residues in the pressure port are marked „Free of oil and grease“.

Gaskets must be chosen that are suited to the process connection and resistant to the measured medium.

Excess pressure on the minus side of the measuring system can damage the instrument.

Check for pressure tightness when commissioning the transmitter.

Wire up the instrument with power switched off. The housing in protection class IP67 consists of a two chamber system in which the measuring cell is aerated directly in relation to the environment by means of a PTFE filter system.

The mounting position should be taken into consideration when checking the zero output. Standard transmitters are adjusted at the factory for vertical mounting. Changes to the mounting position can cause zero shifts at pressure ranges < 2 bar. These drifts can be corrected by adjustment on site.

When the instrument is opened any contact with the electrical connections can affect the signals. This situation can be avoided by switching off the supply voltage or by disconnecting the signal circuit.

The types of protection IP67 are only achieved, when the threaded ring has been screwed tight after electrical connection/parameterization.

The instrument requires no maintenance. The instrument can only be protected against electromagnetic interference (EMC) if the conditions for screening, earthing, wiring and potential isolation are met during installation.

To avoid soiling and damage remove protective cap or wrapping in front of the separating diaphragm before mounting.

Do not touch the flush mounted separating diaphragm, as there is a danger of deformation at measuring ranges to 10 bar / 150 psi. Instrument zero point and measuring characteristics could also be affected.

Measuring instrument and diaphragm seal are a closed system and should not be separated. Avoid overtightening the process screw joints as this can result in zero displacements at the pressure transmitter (fixing error).

When using systems with capillary for vacuum measurements always mount the pressure transmitter underneath the diaphragm seal. The instruments are set at the factory with pressure transmitter and diaphragm seal at the same height. Correct any differences in height between diaphragm seal and pressure transmitter arising from conditions on site on the pressure transmitter when placing the instrument into operation (see zero point correction). When correcting for elevation be aware of the adjustment limits.

Be sure to install and securely fasten the capillary to avoid vibrations. Roll up overlengths with a minimum radius of 50 cm. Shock and changes in temperature can impact on measurements.

Process and ambient temperatures can cause zero displacements at the pressure transmitter with some system designs. We can supply you with an error analysis.

Should you need to adjust the zero-point on site, then undo the front threaded ring to gain access to the controls. You will find instructions on using the keyboard in your manual. To set the measuring span, you should apply an accurate reference pressure.

Store and transport pressure transmitters under dry, clean condition and, where possible, in their original packaging. Permissible storage temperature: –25°C.....+60°C. Avoid shock and vibrations.

Safety instructions

Mounting and operating

CE marking

Instructions for the operation with diaphragm seal

General

Transportation and storage

Zero-point correction

Ex approval KEMA 03 ATEX 1535X II 1G Ex ia IIC T4/T6 (gas) II 1D Ex iaD 20 80 °C / 105 °C (dust) max. ambient temperature: for T4: 85°C for T6: 60°C zone 0, 1, 2, 20, 21, 22

Connection parameter: Ui: 30 V DC Ii: 120 mA DC Pi: 0.84 W Ci: 1.0 nF Li: 10 µH

vibration: IEC 68-2-6 Test FCLloyd‘s specification No. 1: 4g/2...100 Hz

The integration of the measuring transmitter PA2251 in resistance thermometers, type series GA2xx1, complies with ATEX Guidelines.

For installation in a DIN Form B connecting head or on a DIN rail using special fittings.

▪ Linear temperature measurement with Pt 100....Pt 1000, Ni 100...Ni 1000 sensors.▪ Conversion of linear resistance changes into an analogue standard current signal, for example from valves.

Store and transport transmitter under dry, clean condition and, where possible, in their original packaging.Permissible storage temperature: -40 up to 85 °C. Avoid shock and vibrations.

▪ The PA2250 can be programmed by operators within seconds for measuring temperature ranges in all standard resistance thermometers.▪ The resistance thermometer and resistance input have cable compensation at 3-wire connections.

Temperature: -40 °C up to +85 °CCommon specifications:Supply voltage DC standard, PA2250 8...35 V DC Ex, PA2251 8...30 V DCInternal consumption 25 mW...0,8 WVoltage drop 8 VDCWarm-up period 5 min.Communication interface loop link Signal/noise ratio min. 60 dBResponse time (programmable) 0,33...60 sSignal dynamic, input 19 bitSignal dynamic, output 16 bitCalibration temperature 20...28 °C

Application

Transportation and storage

Technical performance

Technical data

Operating Instructions BA_019_2019-08_10.00 Transmitter for temperature - headmounting Page 2/4

BTA-No. 027

Technical Dataaccuracy, the greater of general and basis values:

general values

input type absolute accuracy temperaturecoefficient

all ≤ ± 0.1 % of span ≤ ± 0.1 % of span/°C

basic values

input type basic accuracy temperaturecoefficient

RTD ≤ ± 0.3 °C ≤ ± 0.01 °C/°CLin.R ≤ ± 0.2 Ω ≤ ± 20 m Ω /°C

EMC immunity influence....... ≤ ± 0.5 % of span

response time (programmable) 0.33...60swarm-up time 5 min

type min-value max-value min-spanPt 100 -200 °C +850 °C 25 KNi 100 - 60 °C +250 °C 25 KLin. R 0 Ω 10 kΩ 30 Ω

El. spezification, signal input

Connection diagram

input:

output:

2-wire 2-wire 3-wire 3-wire

2-wire installationresistance4...20 mA

resistance thermometer4...20 mA

2-wire installationcontrol room

2-wire installationcontrol room

Programming· Loop Link is a battery-powered communications interface that is needed for programming PA 2250/51 (internal software art.-no. PRetop 5333)· For programming please refer to the drawing below and the help functions in PReset.

Block diagram

input +

input -

supply +

supply -

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BTA-No. 027