Chromalox 2104 Technical Manual 85
Digital Input Accepts dry-contact closure
Analog Output Option
Assignable Functions Process Variable
Active Setpoint
Output #1 Command
Output #2 Command
Output Signal 4-20mA into 0-800Ω load
1-5 Vdc into 100KΩ or greater load
Selectable via DIP switch
Range Programmable over selected sensor span for
retransmission of Process Variable and Active Setpoint,
fixed to 0 to 100% for transmission of output commands
Accuracy ±0.2% of programmed span, ±1 LSD
Digital Communications (Optional)
RS-232 Single-drop, isolated
RS-422/485 Multi-drop, isolated, field selectable by switch
Baud rates 1200, 2400, 4800, 9600, 19.2K
Protocols ASCII Line, Computer Interface
Instrument Power 100 to 240 Vac, +10%, -15%;
12 to 24 Vac/Vdc, ±10%; 50 to 60 Hz
Operating Environment 32 to 150°F (0 to 65°C) ambient temperature, relative
humidity less than 95%, non-condensing
Dimensions
Overall 3.8 x 3.8 x 4.75 inches (96 x 96 x 121mm)
Depth Behind Projection 4.0 inches (102 mm)
Front Panel Projection 0.75 inches (19 mm)
Panel Cutout 3.6 x 3.6 inches (92 mm x 92 mm)
Case Material High Impact, Black ABS Plastic
Front Panel NEMA 4X Construction
Influence of Line Voltage
Variation ±0.1% of Sensor Span/10% change in nominal line
voltage
Noise Rejection
Common Mode Noise 140dB at 60 Hz
Series Mode Noise ±0.1% of Sensor Span with 300mV peak to peak, 50 or
60Hz series mode noise
RFI Typically less than 0.5% of Sensor Span at a distance of 1
meter (3.1 feet) from transmitter (4W, 464Mhz)