MGS-250 Manual
16 6490-9000
Revision
4
1.5. Specifications
Table 4: Technical Specifications
Specification
Description
Power Supply
24 VDC @ 0.15 A min;
24 VAC, 5 VA min @ 50/60 Hz, 2.5 W max
Power Monitoring
Green LED
Visual Alarm
Red 4-digit LED display
Audible Alarm
Buzzer (audible alarm), enable/disable
Fault Monitoring
Fault codes presented to user
Analog Outputs
4-20 mA; 0-5 V; 0-10 V; 1-5 V; 2-10 V
Relay
1 relay rated 1 A @ 24 VAC/VDC (0.5A, 125V AC UL
rating)
Range 0-3500
ppm
Squelch
1
Readings below 75 ppm are squelched by default
Communication:
Modbus RTU over
RS-485
Baud rate:
9,600 or 19,200 (selectable)
Start bits:
1
Data bits: 8
Parity:
None, odd, even (programmable)
Stop bits:
1 or 2, programmable
Retry time: 500 ms (min time between retries)
End of msg: Silent 3.5 characters
Alarm Delay
Selectable; 0 to 15 minutes
IP Rating
Not IP rated. An accessory splash shield is available
for areas requiring additional protection from wash
down.
Response Time
T90 < 5 minutes
Temperature Rating
-22
q
to 104
q
F (-30
q
to 40
q
C)
Humidity and
Elevation
5-90% relative humidity, non-condensing,
0-10,000 ft. altitude
Weights/Dimensions
6.3 oz, 4.0” x 5.5” x 1.5” (180 g, 102 x 140 x 37 mm)
Enclosure
ABS plastic; UL flammability rating of 94V-0
Approvals
CE, UL/CSA/IEC/EN 61010-1
1 When filtering is disabled (see parameter P.-19 on page 42), the unit will respond to
concentrations sub-10 ppm.
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