Detcon DM-700 User Manual
Page 42
Model DM-700
DM-700 Instruction Manual
Rev. 4.0
Page 38 of 48
Electrical Specifications
Input Voltage:
11-30 VDC
Power Consumption:
Normal operation = 30mA (<0.75 watt); Maximum = 50mA (1.2 watts)
Inrush Current = 1.67A @ 24V
RFI/EMI Protection:
Complies with EN61326
Analog Output:
Linear 4-20mA DC current
1000 ohms maximum loop load @ 24VDC
0 mA
All Fault Diagnostics
2 mA
In-Calibration
4-20 mA
0-100% full-scale
22 mA
Over-range condition
Serial Output:
RS-485 Modbus™ RTU
Baud Rate 9600 BPS (9600,N,8,1 Half Duplex)
Status Indicators:
4-digit LED Display with gas concentration, full-script menu
prompts for AutoSpan, Set-up Options, and Fault Reporting
Faults Monitored:
Loop Fault, Input Voltage Fault, Missing Sensor Fault,
Zero Fault, Processor Fault, Memory Fault, Calibration Fault(s)
Cable Requirements:
Power/Analog: 3-wire shielded cable
Maximum distance is 13,300 feet with 14 AWG
Serial Output: 2-wire twisted-pair shielded cable specified for RS-485 use
Maximum distance is 4,000 feet to last sensor
Mechanical Specifications
Length:
7.6 inches (190 mm), Includes Splashguard
Width:
2.2 inches (55 mm)
Weight:
2.5 lbs (1.2 Kg)
Mechanical Connection:
¾” Male NPT threaded connection
Electrical Connection:
Five 18 gauge wire leads - 5.5” long