Specifications
Entek IRD 6666 and 6667 Protection Monitors
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Specifications
The following are the technical specifications for the 6666.
Inputs
Transducer type
1 to 6 temperature sensor inputs
6666 monitor accepts input from RTDs through external terminal
block
6667 monitor accepts input from thermocouples through external
thermocouple conditioning unit (terminal block)
Sensitivity
Configured at the factory
Input range
Input at the terminal block configured at the factory
0–5 VDC between the terminal block and the 6667 monitor
Signal Conditioning
Amplitude range
Full scale setting configured at the factory
Accuracy
Within ± 2.5% of full scale
Outputs
Recorder
Per channel, not electrically isolated, 4 to 20 mA, 20 mA equal
to full scale of the monitor display
Load resistance 600 ohms max
Accuracy - additional ± 2% (typical)
Serial data
Per module, 4-wire RS-422/485 for output to host computer,
PLC, or DCS (distributed control system)
MODBUS RTU protocol
Baud Rate
4800, 9600, 19200, 38400
Data transferred
From serial port: overall amplitude, relay status, 30 minute trend
(1 minute interval), 30 minute trend prior to trip (1 minute
interval)
First out alarm
First out Alert alarm line, common to all channels
First out Danger alarm line, common to all channels
Alarms
Setpoints
User-configured Alert and Danger setpoints for each channel
Engineering units used for alarms are the same as the display
units
Setpoint accuracy
± 1%
Setpoint repeatability
± 0.1% (10 bit resolution)
Alarm delay/start-up
User-configured alarm delay and machine start-up periods
Time periods are user-configured from 0 to 30 seconds in 0.1
second increments