Siemens 7MF8.24 Series User Manual

Operation
6.5 Local operation
SITRANS P300 with HART communication
6-26 Operating Instructions, 06/2005, A5E00359579-02
Requirement
You are familiar with the correct operation of the transmitter and the associated safety
information.
Zero point calibration for gauge pressure transmitter
To calibrate the zero point, proceed as follows:
1. Pressurize the transmitter.
2. Set mode 7.
3. Press the keys <UP> and <DOWN> simultaneously.
4. Save with the <MODE> key.
Zero point calibration for absolute pressure transmitter
Note
You need a reference pressure known to you which lies within the measuring limits.
To calibrate the zero point, proceed as follows:
1. Create the reference pressure.
2. Set mode 7.
3. Set the reference pressure on the digital display.
4. Save with the <MODE> key.
See also
Operating via keys (Page 6-12)
6.5.8 Current sensor
Introduction
The pressure transmitter is set to constant current operation in mode 8. An external current
sensor can be connected in constant current operation. Then the current no longer
corresponds to the process variable. The following output currents can be adjusted
irrespective of the input pressure:
• 3.6 mA
• 4.0 mA
• 12.0 mA

Siemens 7MF8.24 Series Specifications

General

Manufacturer	Siemens
Accuracy	±2 mm (0.08 inch)
Output Signal	4 to 20 mA HART
Housing Material	Aluminum
Process Connection	Threaded, Flanged
Electrical Connection	M20 x 1.5 or 1/2" NPT
Ambient Temperature Range	-40°C to +80°C (-40 to +176 °F)