Selecting the Proper Pressure Range for Model 231
Did you know that the proper range selection of your Model 231 can save you hours of troubleshooting in the field? Unlike our single sensor Model 230 Differential Pressure Transducer, the Model 231 utilizes (2) of our own gauge pressure transducers to calculate the differential pressure. This makes your system "Line Pressure" equally as important as your differential pressure selection. The internal sensors of the Model 231 are chosen based on the highest selectable range of the transducer: MS1 = 50 psig, MS2 = 100 psig, MS3 = 250 psig and so on. If your system line pressure exceeds the highest selectable range, the Model 231 will not be able to see a difference in pressure because both of the internal sensor outputs will be fully saturated. This is also true of the 231 with remote sensors option.
Example: If you are monitoring a differential of 50 psid and have a system line pressure of 125 psig. What range should you select: MS1, MS2, or MS3?
At first glance all three ranges have the 50 psid range setting available, now look at the system line pressures to see
if all of them will work for this application.
The MS1 and MS2 ranges are limited to a maximum of 50 and 100 psig of line pressure, so they will not work for this application. The choice for this application would be the MS3 pressure range (250 psig range).
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Now's the Time to Resolve that Mold Problem!
This is the time of year that school maintenance managers review their buildings for mold and replace or install new humidity sensors.
If you're looking for that humidity sensor that is accurate and dependable, Setra's Model SRH is the ideal solution.
Model SRH Humidity Transmitters Feature:
- Field Replaceable Sensor Tip
- Choice of 2%, 3% or 5% RH Accuracy
- Active or Passive Temperature
- 4 to 20 mA, 0 to 5 VDC, or 0 to 20 VDC Output
- Removable Terminal Block
- NIST Traceability (Optional Calibration Certificate)
- Recovers from Repeated Saturation
Learn more... |
