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XDT User’s Manual
10
3.2 Instrument Technical Specifications
Enclosure: .........................XDT-OEM bare board
XDT-NEMA tabletop or surface mount, watertight IP65 tested, and NEMA 12 tested
XDT-PM panel-mount, DIN 43700 dimensional standard, optional NEMA 12 type protection gasketing
available
Dimensions & Weight:......XDT-OEM: 4.25” x 5.15” x 2.25”, 0.6 lbs (fully optioned) without cables.
XDT-NEMA: 4.73” x 6.3” x 3.55”, 2.1 lbs (fully optioned) w/cables.
XDT-PM: 5.67” x 2.84” x 2.95” DIN 43700 standard, 1.3 lbs (fully optioned) w/cables.
refer to appendix E for detailed dimensions
Environmental Range: ......Operating temperature of electronics: 14°F to 122°F (-10°C to 50°C)
Storage temperature of electronics: -40°F to 176°F (-40°C to 80°C)
Humidity: 0 to 90% RH non-condensing
Altitude: 0 to 6500 feet (2000 meters)
Mains Supply Voltage:......100 to 250VAC autoranging, 50/60Hz, 10VA, internal 0.5A, 250V fast acting fuse.
Optionally the instrument may be configured with DC power capability: 15 to 30VDC 0.5A.
Electrical connections:......21 contact pluggable screw terminal block, 1.3mm diameter pins on 5mm centers.
Wiring requirements: ........ For AC Power
: 18AWG or heavier wire, an external means for disconnecting the power source is
required to meet National Electrical Code requirements.
For Sensor signal: RG58 coaxial cable, or RG6 for cable longer than 100’. A 6 foot cable is provided as
a standard, other lengths ordered as options. When changing cable, refer to cable compensation section.
Input resolution:................0.1°C dewpoint.
Indicators: .........................3.5 digit backlit LCD with custom legends, audible indicator.
Engineering units:.............°C,°F, PPM, LBS H
2
O/mm scf,gm H
2
O/m
3
.
Controls:............................Four push buttons, user’s selections are stored in EEPROM.
Outputs:............................. Analog
: voltage by order or current user selectable 4-20mA or 0/24mA. Linear to the selected engi-
neering units, the range is programmable. Output resolution is 0.1°C dewpoint, linearity 1%, max load
resistance 500 Ohms.
Digital
RS-232C (9600,8,E,1), can interface to a Personal Computer or other RS-232 device.
Alarm relay contacts:........Ordinary use, explosion-proof housed, and safe area instruments: 10A, 250VAC or 30VDC.
Intrinsically Safe Div 2 instruments use hermetically sealed relays: 3A, 120VAC
Isolation: ...........................Sensor is isolated from power ground, analog output and RS-232, but they are shunted with a 33V tran-
sorb, a 1M Ohm resistor and 0.1uF capacitor. Refer to Electrical Connections section.
Approvals/Classifications: CE for electromagnetic compatibility, accredited laboratory tested and certified
UL and cUL for ordinary field wired use
Intrinsically Safe configurations: for NEC standard IS installations UL,
for CENELEC standard IS installations DEMKO,
refer to instrument labeling