UMMPS-1 Installation and Maintenance
January 2003 5
Maintenance
The transmitter requires no periodic or scheduled maintenance.
Transmitter accuracy and responsiveness can be degraded should gelled or solidified material plug or partially plug
the holes in the protective cap or accumulate within the cap and coat the diaphragm. To remove this material, lift the
transmitter from the vessel. Apply a low-pressure stream of clean water to unplug the holes and wash material from
inside the cap. A mild detergent that will not leave a residue may be added to the water.
The protective cap may be unscrewed from the transmitter body for cleaning. If the cap is difficult to unscrew and
additional leverage is needed, carefully insert a 1/8" (3.2mm) diameter metal rod through two opposing holes in the
cap. Do not scratch the diaphragm while inserting the rod.
When installing the cap, be careful not to damage the threads in the cap. Use your hands, no tools, and feel for
proper thread engagement.
CAUTION
Do not scratch the transmitter diaphragm.
Harsh solvents may damage the protective cap.
Do not use the transmitter without the protective cap.
Model Designation
Each transmitter has a nameplate with the transmitter’s model designation printed on it. The following table lists the
available transmitter models. If ordering, select the desired measuring range, read across the table to the Range
Character (*) and insert that character into the model number at the head of the column.
Example: 7MF1570-1MA01
SITRANS P Pressure Transmitter, MPS Series (Submersible Sensor),
Two-Wire System
7MF1570-1*A01
Measuring Range Cable Length (L) * Range Character
0-6 ft WC 32.8 ft (10 m) K
0-12 ft WC 32.8 ft (10 m) L
0-20 ft WC 82.0 ft (25 m) M
0-30 ft WC 82.0 ft (25 m) N
0-60 ft WC 82.0 ft (25 m) P
Accessories
Junction Box (to connect transmitter cable to field wiring) 7MF1570-8AA
Cable Hanger (to mount/hand the transmitter) 7MF1570-8AB
To Next Page