Revision 14
180 August 02, 2019
4 dry contact inputs – user programmable
4 wet inputs, for remote calibration, etc – user
programmable
Intrinsically safe keypad has 20 keys for easy
menu navigation
Two isolated 4 20 mA analog inputs to allow
the ProTech903 to be a communication hub for
other devices that do not include the capability.
Dual processor design using intelligent
colorimetric sensor
Sensor is using 24 Bit AD converter to achieve
greatest sensitivity and incorporates
temperature sensor
Real time clock for accurate event time
stamping
512 Kbytes non-volatile memory for data and
event logging (up to 10 months of H
2
S / total
sulfur concentration data logs)
Field upgradeable program memory
Tape length sensor to accurately measure tape
movement and usage (reported length is within
1% of actual length)
Optional independent optical low tape sensor
2
S 28” Height x 16” Width x 16” Depth
Total sulfur 48” Height x 27
ProTech903 Div II, 40 pounds
ProTech903 Div I, 80 pounds
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