Special Conditions For Sensepoint Xcd With Oxygen Sensor - Honeywell Sensepoint XCD Technical Manual

Sensepoint XCD Technical Manual
Special conditions for Sensepoint XCD with Oxygen
Sensor
1.
Compliance with the Technical Manual is required for safe use of Sensepoint XCD.
2.
The following environmental conditions of operation apply for the use of Sensepoint XCD
with oxygen sensor:
Temperature:
Relative humidity:
Pressure:
(extended range for temperature according to EN 50104)
3.
In order to minimise measurement errors, the ambient conditions (temperature, pressure,
humidity) during the calibration of the measuring channels should be as close as possible
to those to be encountered during normal operation.
4.
Measuring values from 20.7 % v/v up to 21.1 % v/v are indicated as
'20.9' % v/v oxygen during operation in the measuring mode. Measuring values below 3
% v/v oxygen are indicated as 0 % v/v oxygen (analogue output 4 mA).
5.
Measuring values above the end of the measuring range are indicated as 25 % v/v O
blinking 'W04'. The analogue output is set to 22 mA.
Fault messages are shown on the display as 'F-XX' and the analogue output is set to
1 mA.
6.
Special states for Analogue output:
•
≤ 1 mA:
•
2 mA:
•
22 mA:
7.
If the Sensepoint XCD is operating in conjunction with a control unit to analyse the
measuring signal, the control unit must operate correctly when the XCD transmits a value
outside of the measuring range.
8.
Use without Weather Protection Cup accessory (P/N SPXCDWP), only.
9.
If substances (e. g. sensor poisons) that could interfere with and affect the sensitivity of
the sensing device are to be expected in the atmosphere to be monitored which may cause
a rapid change of sensitivity, the calibration interval shall be reduced.
10.
Before use, ensure that any alarm delay set is suitable for the intended application.
11.
Before use, consideration must be given to cross sensitivity to other gases. Refer to the
Sensepoint XCD Technical Manual and the Sensor Datasheet for cross interference data.
12.
Some types and concentration of dust in the measured atmosphere may impair the
measuring function of the gas detector.
13.
The Type Examination Certificate applies to the measurement of oxygen up to 25 % v/v.
-20°C to +55°C
10 % to 90 %
80 kPa to 120 kPa
System and other faults
Start up, Inhibit
Over ranging
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