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The Net Safety Monitoring ECO-SENSE detector is a truly state-of-the-art H2S gas
sensor/transmitter package designed specifically for 2 wire, loop-powered installations.
An economic and ecological choice, this extremely low power detector functions in
a 4-20mA "sink" mode at less than .75 watts with 10-30 Vdc with a full LED display.
The advanced sensor interface allows a tiny memory chip in the sensor to provide the
ECO-SENSE with parameters such as calibration, range, engineering units and important dates.
A real time clock and calendar allows logging events such as sensor replacement, alarms and
calibrations. Calibration offset and gain factors may be viewed and are useful for
predicting sensor "end of life" conditions.
Operator interface is via a menu driven magnetic keypad allowing full access without
opening the enclosure. There are no potentiometers and all adjustments are performed
through the keypad. Requires only a simple calibration magnetic (included) for non-intrusive
calibration, no other special electronic devices are needed.
The Net Safety ECO-SENSE H2S sensor overcomes noise immunity problems associated with
electrochemical sensors by enclosing all low level signals within a grounded stainless steel
sensor head. An integral "transient voltage suppressor" protects the device in case of
lightning or other surge voltage levels. The ST-490 is enclosed in a rugged, NEMA Type 7
approved, stainless steel enclosure suitable for Class 1, Division 1 hazardous environment
installations and has been certified by CSA, ANSI and ATEX.
SPECIFICATIONS SHEET |
PRODUCT MANUAL
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- Advanced sensor interface allows sensor type, range, calibration and other variables be stored in sensor
- Allows "one man" sensor calibration in hazardous areas without area declassification. No special electronic devices needed
- LCD readout and front panel alarm LED indicators for Alarm1, Alarm2, Fault, and IN CAL are standard
- Isolated 4- 20mA, quick connect cables
- CSA / ANSI / ATEX certifications
- Standard "Fault Supervision" circuitry continuously monitors for failed sensor
- Field replaceable H2S sensor module - range configured on sensor module
- 4-20mA signal may be transmitted thousands of feet on 2-wires
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