Super Systems DP2000 - Manual (Page 6)

SSi Super Systems Inc.
Product Manual - Model DP2000 Portable Dew Point Analyzer
SSi Manual 4545 – DP2000 Super Systems, Inc. Page # 6 of 17
Revision Level “F” (800 ) 666-4330
contains the dielectric ceramic relative humidity (RH) sensor, as well as a built in
temperature sensor to determine its dry bulb temperature. Information from both of these
sensors is used to compute the resultant dew point, which is displayed on the digital LED
display.
MAINTENANCE / SAFETY ISSUES –
One of the added features of the DP2000 is the ability to monitor the sensor’s operating
temperature through the built-in thermister in the probe tip. The temperature of the
sample gas can be determined by pressing the switch labeled “Sensor Temp”. It is spring
loaded, so it will automatically return to displaying dew point.
Maintaining proper sensor temperature will prevent the premature failure of the sensor.
The operating temperature of the sensor should remain below 140
° F (60°C) at all times.
Periodic checks of the sensor temperature will verify that the sensor is not being exposed
to excessive heat. If these periodic checks show a high sensor temperature, then the
length of sample tubing should be increased to allow for adequate cooling of the sample
before it passes the sensor tip.
Continuous operation of the DP2000 Dew Point Analyzer will lead to premature failure,
since many the internal components are not designed for uninterrupted use. If continuous
monitoring of Dew Points is required, please contact Super Systems, Inc. at (800) 666-
4330 to inquire about products intended specifically for this application.
FACTORY CALIBRATION –
Factory calibration is recommended every six months if the unit is used regularly. SSi’s
calibration is NIST traceable and includes a numbered “Certificate of Calibration”. This
certificate also indicates the accuracy of the analyzer before and after calibration. Please
contact Super Systems, Inc. at (800) 666-4330 for more information regarding this
service.
FIELD CALIBRATION –
It is also possible to calibrate the DP2000 in the field, which will require the optional
calibration kit (Part Number 31030). The instructions for a field calibration are shown
here, however please feel free to contact Super Systems at 800-666-4330 if you would
like to review the process with us before you begin.
The calibration kit consists of two bottles of saturated salt solution in which each bottle
generates a precise relative humidity percentage (R.H.%) value. One bottle is 11.3%
R.H., and the other is 75.3% R.H. These two specific calibration points are already pre-
programmed into the microprocessor board.
1.0 Open the unit