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Operating Instructions PT-LE

8

5.

Configuring the Output Signal

The user can configure the PT-LE's output signal. This can be done in various ways

Output

SW Pos 3

SW Pos 4

Comments

0…10V

on

off

R

Last

!Nȍ

2…10V

on

off

R

Last

!Nȍ

0…20mA

off

off

max. load

ȍ

4…20mA

off

on

max. load

ȍ

The two-wire model must be configured by the manufacturer.

6.

Setting the Measuring Range (Option)

The transducer with 4 measuring ranges can be adapted to the measuring 
assignment in question. The teaching of 4 measuring ranges into the appliance has 
been undertaken by the manufacturer. The switches 1 and 2 of SW can be used to 
select the measuring range in question before the transducer is switched on.

SW Pos 1

SW Pos 2

Measuring 

range

off

off

1

on

off

2

off

on

3

on

on

4

The limiting values of the measuring ranges are noted on the label on the side of the 
PT-LE. Display-optional appliances indicate the limiting value of the selected 
measuring range for 1.5 seconds after being switched-on. The appliance should be 
re-zeroed following any measuring range change-over. This is because the 
amplification change-over may produce offset voltages.

Pos 1

Pos 2

Summary of Contents for PT-LE

Page 1: ...1 Differential Pressure Transducer PT LE Operating Instructions...

Page 2: ...bols 5 2 Description oft he Transducer 6 3 Startup 6 3 1 Functional Description 6 3 2 Supply Voltage Connections in the Appliance 6 3 3 Connections for Two Wire System 7 4 Resetting Offset 7 5 Configu...

Page 3: ...e entire service life of the transducer x They must be passed on to the succeeding personnel charged with operations x Any additions coming from the manufacturer must be inserted The manufacturer rese...

Page 4: ...rsons as assigned by the plant operator are to operate the transducer Do not perform any functional test involving compressed or breathable air This would otherwise damage those transducers with low m...

Page 5: ...dling the equipment WARNING It points to a hazard possibly extending from injures through to death should the instructions not be followed CAUTION It points to a hazard which could cause considerable...

Page 6: ...ically mounted on a wall not subject to any vibrations To stop any condensed water entering the measurement cell the transducer together with the hose connections for positive gauge pressure and negat...

Page 7: ...4 3 2 1 5 4 3 2 1 4 Resetting Offset After starting the pressure transducer give it some 15 minutes to warm up During this time the output signal may be unstable Zero point calibration of the applianc...

Page 8: ...teaching of 4 measuring ranges into the appliance has been undertaken by the manufacturer The switches 1 and 2 of SW can be used to select the measuring range in question before the transducer is swi...

Page 9: ...s output so that any adjusted time delay will also cause a delay in relay triggering 9 In case of Malfunctions Fault descritpion Possible cause Corrective action No output signal Supply voltage is not...

Page 10: ...k Ohm 0 4 20 mA RL 500 Ohm 4 20 mA two wire 17 32 V RL 500 Ohm Switching contact optional max 230 VAC 6 A min 500 mW Display optional 3 digit LCD Overload range from 2 5 kPa 50 kPa 2 5 kPa 10 kPa 140...

Page 11: ...Operating Instructions PT LE 11 11 Dimensional Drawing no LCD with LCD...

Page 12: ...er and supplier in a wide variety of industries Originating from the Netherlands Observator has grown into an internationally oriented company with a worldwide distribution network and offices in Aust...

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