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875 Benzene Monitor MANUAL
Introduction to TITAN
The TITAN 875 Benzene Monitor is a fixed benzene monitor certified for Zone 1 hazardous areas. It detects 0-
20ppm concentrations in ambient air, taking one sample per minute.
It monitors both the current benzene concentration and the STEL (Short-Term Exposure Limit, calculated over
the previous 15 minutes).
Real-time display of the measurement is on the LCD and transmitted on a 4-20mA channel. Historic data stored
in Titan can be viewed and stored externally either over the RS485 or the USB connection.
Alarms and warnings are transmitted by the 4-20mA channel and by two relays programmable to be Normally
Open or Normally Closed.
It is powered by a single power supply in the range of range of 19VDC @ 4A to 32VDC @ 2.4A.
The Titan has two modules:
The Housing Module that is
installed permanently.
The Detection Module that can
be removed for servicing and
calibration.
All the operational and calibration
data is stored within the Detection
Module. After the Detection Module
has been calibrated, it will function
correctly when installed in any
Housing Module.
A Detection Module can be
calibrated and tested off-site, then
taken to the installation site and
installed in place of an existing
module. The removed module can
then be serviced ready for installation
later or in another Housing Module.
Technical specification
Measurement Frequency
Response time:
Detectable Range:
Resolution:
Accuracy:
Data log:
Outputs:
Alarms/Alerts Visual:
Flow Rate:
Temperature:
Power Requirement
Weight:
Every 1 minute
T90 < 1 minute
0-20ppm Benzene
+/- 0.1ppm
+/- 0.05ppm or +/-10%, whichever is greater
To internal memory (Up to 2 Years)
4-20mA, RS485, USB, Two programmable
relays (24VDC @1.5A maximum load)
Red, Yellow, Green, LEDs
≥ 160 ml/min in Ambient conditions
Operating: -20 to 55degC (-4 to 130degF)
Nominal 24VDC at 3.2A
15kg
Page 9 of 65
Ion Science Ltd.
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