Uniphos DT 500-1M 智能数字气体变送器

Operating voltage: 18 to 28 VDC
Power Consumption: Less than 3 watt
Enclosure: Flame proof, cast aluminium alloy 
Cable entries: ½” NPT (2 entries)
Size: 230mm x 220mm x 120mm
Weight: 2.5 Kg (Approx.) 
3-wire cable system:
Wire 1: Supply voltage
Wire 2: signal 4 - 20 mA
Wire 3: return ground
Recommended cable specifications: 3 core 
copper wire, shielded armored cable R-12 ohm/Km
per core and C - 0.15 mFd per Km and reactance 
0.107 ohms/Km
Output signal: Industry standard 4 - 20 mA 
sourcing (Cable load driving capacity : 650 ohm 
maximum) RS - 485 (MOD - BUS) on 4 core cable