Справочник Пользователя для Emerson 5081-P
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MODEL 5081-P pH/ORP
SECTION 2.0
INSTALLATION
SECTION 2.0
INSTALLATION
2.1
Unpacking and Inspection
2.2
Pre-Installation Set Up
2.3
Orienting the Display Board
2.4
Mechanical Installation
2.5
Power Supply wiring
2.1 UNPACKING AND INSPECTION
Inspect the shipping container. If it is damaged, contact the shipper immediately for instructions. Save the box. If there is
no apparent damage, remove the transmitter. Be sure all items shown on the packing list are present. If items are miss-
ing, immediately notify Rosemount Analytical.
Save the shipping container and packaging. They can be reused if it is later necessary to return the transmitter to the factory.
no apparent damage, remove the transmitter. Be sure all items shown on the packing list are present. If items are miss-
ing, immediately notify Rosemount Analytical.
Save the shipping container and packaging. They can be reused if it is later necessary to return the transmitter to the factory.
2.2 PRE-INSTALLATION SETUP
2.2.1 Temperature Element
The Model 5081-P pH/ORP transmitter is compatible with sensors having Pt 100 and Pt 1000. Sensors from other manu-
facturers may have a Pt 1000 RTd. For Rosemount Analytical sensors, the type of temperature element in the sensor is
printed on the tag attached to the sensor cable. For the majority of sensors manufactured by Rosemount Analytical, the
RTd IN lead is red and the RTd RTN lead is white. The Model 328A sensor has no RTd. The Model 320HP system has
a readily identifiable separate temperature element. Resistance at room temperature for common RTds is given in the
table.
The Model 5081-P pH/ORP transmitter is compatible with sensors having Pt 100 and Pt 1000. Sensors from other manu-
facturers may have a Pt 1000 RTd. For Rosemount Analytical sensors, the type of temperature element in the sensor is
printed on the tag attached to the sensor cable. For the majority of sensors manufactured by Rosemount Analytical, the
RTd IN lead is red and the RTd RTN lead is white. The Model 328A sensor has no RTd. The Model 320HP system has
a readily identifiable separate temperature element. Resistance at room temperature for common RTds is given in the
table.
If the resistance is...
the temperature element is a
about 110 ohms
Pt 100 RTd
about 1100 ohms
Pt 1000 RTd
2.2.2 Reference Electrode Impedance
The standard silver-silver chloride reference electrode used in most industrial and laboratory pH electrodes is low imped-
ance. EVERY pH and ORP sensor manufactured by Rosemount Analytical has a low impedance reference. Certain spe-
cialized applications require a high impedance reference electrode. The transmitter must be re-programmed to recognize
the high impedance reference.
The standard silver-silver chloride reference electrode used in most industrial and laboratory pH electrodes is low imped-
ance. EVERY pH and ORP sensor manufactured by Rosemount Analytical has a low impedance reference. Certain spe-
cialized applications require a high impedance reference electrode. The transmitter must be re-programmed to recognize
the high impedance reference.