Level Transmitters

• 2 wire system
• Continuous 4-20 mA DC output
• Simple, low cost & reliable
• Trouble free operation for conductive / non conductive liquids, slurries
• Flame-proof, lP-65, llA, llB, CMRI Certified housing

Description :

SYSTECH offers capacitance type level transmitters. The probe is based on properties of capacitor. Vessel wall & probe forms two electrodes. If vessel is of non conductive material, the probe will be double rod type. The distance between electrode & surface remain unchanged. The variable is the depth of the material being measured which represents the dielectric constant between two electrodes. Air & vacuum have relative dielectric constant as 1 & that of liquids, it is greater than 1. The capacitance of the capacitor therefore depends on how much material lies between the probe & vessel wall i.e. whether the probe is covered with or free from material. The capacitor changes with change in level of the material & provides corresponding 4-20 mA DC continuous output.

Technical Specifications :

Probe Length	As per requirement ( max 3 mtr )
Type Of Output	4 to 20 mA DC , to wire
Accuracy	+ 2% Of F.S.
Linearity	+ 2%
Process Temperature	250oC Max
Process Pressure	30 Kg/cm2 Max
Probe MOC	SS 316 with Teflon Coating
Power Supply	24 VDC, External
Power Consumption	< 6 VA
Response Time	< 1000 msec
Temperature Coefficient	+ 0.1% Per oC
Transmitter Enclosure	Flame- Proof, IP-65, IIA, IIB CMRI Certified
Process Connections	Flanged / Threaded
Mounting	Top of the Tank
Operating Conditions	Temperature 0 to 55oC / Humidity 5 to 95% Non condensing
OPTIONAL
Local Display	8 x 1 LCD