Difference b/w MWP and Calibration Range

What is the meaning of b/w in the sentence, "What is the difference b/w"?

I've seen this before. It makes no sense. What ever happened to spelling words out?

I believe it is a shorthand for between, but yeah I could see where the confusion would come into play not seeing it before.

We have become so lazy that we can't even put forth a little effort to be understood. It's a shame.

2500 inches of water are equal to 6.35 kilograms /cm2. Make that conversion yourself here. As for the difference between calibration and working pressure, consult the users manual for your particular device, (you didn't tell us what it is), and consider the process application. Many apps require a narrow cal range but must withstand wide variances in process value. I hope that's vague enough for you.

Well first of all sorry for the 'B/W' the short hand for between, I must have realized that this is a professional forum... won't happen again :)

secondly as commented by RDGRNR, well this is a remote seal type pressure transmitter(yokogawa) with capillary tube installed at a vessel containing liquid urea. The normal pressure being 3 to 5 kg/cm2. The transmitter specs read, Calibration range: 0-2500inH2o and MWP : 0-60kg/cm2.

Thanks for the enlightenment. What "genius" decided that b/w could be substituted for between? And what group of lazy idiots decided that was an acceptable redefinition of the English language?

As you may have surmised, I am from the old school.

Maximum Working Pressure (MWP)
The maximum total pressure permissible in a device under any circumstances during operation, at a specified temperature. It is the highest pressure to which it will be subjected in the process. It is a designed safe limit for regular use. Note: MWP can be arrived at by two methods:
1) designed, by adequate design analysis, with a safety factor and
2) tested, by rupture testing of typical samples.

from
INSTRUMENT ENGINEERS' HANDBOOK: Process Measurement and Analysis
by Bela G. Liptak, 4th Edition

The calibration range is the range over which that the unit can measure and produce a viable output signal.

If the transmitter is for a level application, the values for its scaled range (internally) might not start at zero because of the effect of the fill fluid in the capillaries (and the specific gravity of the medium). For instance, the LRV might be -1188"w.c., the URV might be 742"w.c. in order to produce an output where 4.0ma is at the zero level and 20.0ma is at the upper level.

Logic: there would be no point in having the calibration range greater than the MWP, would there?

Ring-ring. Ring-ring. "Hello? Is that Ffarquar Instruments' technical helpline? Oh, good. I've got one of your NBG30 pressure transmitters rated MWP=100psig, and every time I try to calibrate it 0-250psig, the diaphragm blows out. Can you help?"