Uniphos UNIPHOS-500 DT Uniphos 500DT Digital Universal Gas Transmitter with relay (LEL, O2, CO, CS2, PVC, VOC, CO2, H2S, SO2, PH3, COCl2, Cl2, Br2, HCL, HF, HCN, NO2, NH3, ETO, IIC, HCHO, CAN)

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

Optional: Module Smart Sensor exclude
Uniphos 599DS:Flammable (Pellistor, %LEL) : 0-100% LEL:: 1% LEL 
Uniphos 599DS-PPM: Flammable (Solid State, ppm): 50 - 2000 ppm:: 1 ppm 
Uniphos 599DS-IR: Flammable (Infrared, %LEL): 0 - 100% LEL::1% LEL 
Uniphos 510DS: Oxygen (O2) : 0-25% V/V:: 1% V/V 
Uniphos 520DS: Carbon Monoxide (CO): 0 - 1000 ppm:: 1 ppm 
Uniphos 521DS: Carbon Disulphide (CS2) : 0 – 100 ppm::1 ppm 
Uniphos 522DS-VC: Vinyl Chloride (PVC) ( Vinyl Chloro Monomer): 0 - 100 ppm:1 ppm 
Uniphos 599DS-PID: VOC (Volatile Organic Compounds): 0 - 1000 ppm:: 1 ppm 
Uniphos 599DS-PID- Hi : VOC (Volatile Organic Compounds): 0 - 6000 ppm:: 1 ppm 
Uniphos 525DS: Carbon Dioxide (CO2) : 0 - 5% v/v:: 0.1% v/v. 
Uniphos 530DS: Hydrogen Sulphide (H2S): 0 - 100 ppm::1 ppm 
Uniphos 535DS: Mercaptan: 0 - 20 ppm:: 0.1 ppm 
Uniphos 540DS: Sulphur Dioxide (SO2): 0 – 20 ppm:: 0.1 ppm 
Uniphos 540DS-Hi: Sulphur Dioxide (SO2: 0 - 2000 ppm:: 1 ppm 
Uniphos 550DS: Phosphine (PH3): 0 – 5/10 ppm:: 0.01 ppm 
Uniphos 555DS: Phosgene (COCl2): 0 - 1 ppm:: 0.01 ppm 
Uniphos 560DS: Chlorine (Cl2): 0 - 20 ppm:: 0.1 ppm 
Uniphos 561DS: Bromine (Br2): 0 - 20 ppm:: 0.1 ppm 
Uniphos 570DS: Hydrogen Chloride (HCL): 0 - 30 ppm:: 1 ppm 
Uniphos 572DS: Hydrogen Fluoride (HF): 0 - 10 ppm:: 0.1 ppm 
Uniphos 575DS: Hydrogen Cyanide (HCN): 0 - 100 ppm:: 1 ppm 
Uniphos 581DS: Nitrogen Dioxide (NO2): 0 - 20 ppm:: 1 ppm 
Uniphos 582DS: Ammonia (NH3) : 0 - 100 ppm:: 1 ppm 
Uniphos 582DS-Hi: Ammonia (NH3): 0 - 1000 ppm:: 1 ppm 
Uniphos 583DS: ETO (Ethylene Oxide): 0 - 20 ppm:: 0.1 ppm 
Uniphos 590DS: Hydrogen (IIC): 0 - 1000 ppm:: 1 ppm 
Uniphos 598DS: Formaldehyde (HCHO): 0 - 10 ppm:: 1 ppm 
Uniphos 5XXDS: Acrylonitrile (ACN): 0-50/60 ppm:: 1 ppm