4" (101mm) Pressure Chart Recorder
This product has been replaced by the PW476
Dickson's best selling pressure monitoring instruments. Our 4-inch (101mm) line of recorders produce a permanent visual record of your variable pressure data. These recorders provide a complete written history at the source.
- 0-300 PSI, 24-Hour
- Compact and durable design
- Single AA battery operation
Charts are sold separately.
Dickson Expert Services
Our Dickson Data Division has specially trained representatives to address the needs of customers with large installations or unique demands. Please call 888-452-4626.
- Ambient Operating RH Conditions 0-95% RH non-condensing
- Ambient Operating Temperature Conditions -22.0 to 122.0F (-30.0 to 50.0C)
- Battery Life (Avg) 1 Year
- Calibration Options N100, N300
- Channels CH1: Pressure
- Chart Rotation Speed 24 Hour
- Dimensions 2.9 x 6.9 x 6.3in
- Enclosure Velox PBT NEMA 4X Weather Resistant
- Fitting 1/4" NPT Thread, 5/8" Hex
- IP Rating 56
- Included Accessories One AA Battery, Red Pen and Quick Start Guide. *Charts sold separately.
- Mounting Options Stem or Wall Mount (With Keyhole)
- Power Source Battery; One AA Battery (User Replaceable)
- Pressure Accuracy 2% of Full Scale
- Pressure Range 0.0 to 300.0PSI
- Response Time 1 Second
- Unit Weight 3 lbs
- Units/Pkg 1
- Warranty 12-Month Limited
Why should I calibrate?
All instruments lose accuracy over time due to normal usage and the environmental conditions to which they are exposed.
How often should I calibrate?
For most applications, the recommended calibration interval is every twelve months.
What is NIST Calibration?
NIST stands for the National Institute for Standards and Technology. This organization is responsible for maintaining the master for different measurements, such as the standard "foot", standard, "second", or standard "pound". NIST also maintains the standard for temperature, humidity and pressure.
NIST Traceable means that the measuring standard can be traced directly back to the master standard maintained by the NIST organization.
NIST-Traceable does not tell you the measurement accuracy of a metrologty service in any detail. Only metrology services that can document their ISO 17025 standard provided data on their best measurement uncertainty.
Frequently Asked Questions
If the pen does not respond to pressure changes there may be a clog in the capillary. The unit will need to be serviced by Dickson.
Make sure the chart is not hung up or restricted.
Make sure the pen does not have too much tension, pinching the chart to the dial plate.
Make sure there is a good battery being used and it's in correctly.
Make sure the center strip of the chart is inserted properly into the black center hub of the recorder, making sure the chart is not ripped or torn.
What is the tolerance of the unit it is being compared to?
It's ok if the unit is within the sum of the two tolerances
Remember that the unit's tolerance speaks to the Chart Recorder only, there is any additional that applies to the probe
Has an outside calibration house attempted calibration? It may not have been adjusted properly
When was the last time the unit was sent to the Dickson Calibration Lab for a recalibration?
Walk through zero adjustment, found in the manual
For units with Pen Adjustment - rotate screw to adjust the unit to match another unit of greater accuracy after both units have stablized in the same environment.
Chart Recorders - make sure the correct chart is being used.
K-Thermocouple capable units are capable of using any K-type thermocouple probe or extension but keep in mind that long extensions to extend the distance may require a Zero adjustment. (Refer to manual)
As a general rule: If the unit is not responding properly, and you have more than one thermocouple, swap probes to see if it is the probe or the unit that is defective.
Make sure the output signal of the transmitter is calibrated to its full measuring range.
Make sure the range selected on the recorder matches the transmitter exactly and that the proper chart is being used.