Sensepoint Xcd-Rtd Calibration Procedure - Honeywell VA201T Calibration Handbook

Sensepoint XCD-RTD Calibration Procedure

It is recommended to periodically carry out a gas response check on the Sensepoint XCD RTD to ensure
correct operation. This may be done in two ways;
1. A simple Response Check often referred to as a "BUMP TEST" is a test using calibration gas applied to
the sensor via the Weather Protection or using the Sensepoint Gassing Cap.
If a BUMP TEST is done via the Weather Protection it may be necessary in windy conditions to increase
the flow rate of the test gas by a further 1 LPM, OR, to shelter the weather protection from the wind.
2. A full gas calibration of the sensor as described in the following section, using ONLY the Gassing Cap
Zero and Span Calibration
CAUTION
Before initial calibration allow the detector to stabilize for 30 minutes after applying power.
When in zeroing and span calibration mode the current output from the detector is inhibited (default 2mA) to
avoid false alarms.
To calibrate the detector, use an appropriate span gas cylinder, constant flow regulator and the Sensepoint
Toxic Gassing Cap (refer to Sensepoint Technical Manual for details). The flow rate is used of approximately
1 to 1.5 litres per minute for calibration.
Apply the gas at the flow rate for the recommended application concentration and time please see table below.
Gas
H2S
H2S
H2S
CO
CO
CO
Cl2
Cl2
O2
NH3
NH3
H2
H2
SO2
SO2
NO
NO2
NO2
Sensepoint XCD-RTD
Gassing Cap
Gassing Cap Kit 2106D2114
Test Gas Concentrations
Recommended Test
Range
Concentration
0 to 20ppm
0 to 50ppm
0 to 100ppm
0 to 100ppm
0 to 200ppm
0 to 500ppm
0 to 5ppm
0 to 15ppm
0 to 25% V/V
0 to 50ppm
0 to 1000ppm
0 to 1000ppm
0 to 10000ppm
0 to 15ppm
0 to 50ppm
0 to 100ppm
0 to 10ppm
0 to 50ppm
Calibration Handbook
Spanner Wrench
Potentiometer Trimmer
Application
Time
10ppm 3 min
20ppm 3 min
50ppm 3 min
50ppm 3 min
100ppm 3 min
250ppm 3 min
3ppm 10 min
10ppm 10 min
19% V/V 1 min
25ppm 10 min
500ppm 10 min
500ppm 3 min
3000ppm 3 min
10ppm 5 min
20ppm 5 min
50ppm 5 min
5ppm 5 min
20ppm 5 min
141
Operating Temp.
Min. Max.
-20°C +50°C
-20°C +50°C
-20°C +50°C
-20°C +50°C
-20°C +50°C
-20°C +50°C
-20°C +50°C
-20°C +50°C
-15°C +40°C
-20°C +40°C
-20°C +40°C
-5°C +40°C
-5°C +40°C
-15°C +40°C
-15°C +40°C
-5°C +40°C
-15°C +40°C
-15°C +40°C