KROHNE H250 M40 EN - Manual (Page 56)

7
SERVICE
56
H250 M40
www.krohne.com 11/2012 - 4000640702 MA H250 M40 R02 en
7.2.4 Replacement - Retrofitting ESK4
When replacing or retrofitting an ESK4, the following are required at the time of
ordering:
• SN - serial number or
• SO - sales order
This information can be found on the indicator nameplate.
The ESK4 is factory calibrated, making it possible to replace it or retrofit it without recalibrating.
• De-energise the ESK4.
• Lift and remove the ESK4 with a screwdriver.
• The ESK4 plug-in tongues 1 are plugged in under the two bolts 2 on the baseplate.
• Slight pressure is used to press the ESK4 onto the spring pins 3 until it stops, firmly attaching
the ESK4.
If a change in measuring range, product temperature, product, density, viscosity or pressure is
desired, this can be done with the KroVaCal program and with a HART
® modem. However, each
measuring unit is subject to its own physical limits, which the DroVaCal program correctly
calculates, and may thus reject the desired change. If a change is performed using the program,
the new data is also transmitted to the ESK4.
• Device identification
• Device address
• Serial Number
• Measuring point designation
• Digital measured value query in flow units, % and mA
• Test / setting functions
• Calibration 4.00 and 20.00 mA
• Set current output to any desired value
WARNING!
Do not damage the indicating element!
MA_H250_M40_R02_en_640702_PRT.book Page 56 Wednesday, November 28, 2012 12:23 PM