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S 120 residual oil sensor

The new residual oil sensor S 120 monitors oil contents of compressed air and gases permanently or for spot checks when used as portable unit in conjunction with S 551. The simple installation and the outstanding performance makes S 120 the ideal choice when residual oil contents needs to be measured and monitored.

Oil free compressed air is not an easy task to be achieved. Monitoring is a must in many industries and applications to avoid contaminations in products and risks for health of humans. S 120 makes this monitoring task affordable and reliable.

For best accuracy and long term stability, the sensor applies an automatic calibration. Sensor contaminations and sensor life time are monitored and will be indicated to the user. An over range detection will remove the sampling air from the sensor to protect it against contamination.

Application

Medical air
Pharmaceuticals
Breathable air
Marine air
Food and beverage
Medical engineering
High speed trains
Semiconductor fabs
Conveyance of hygroscopic food
High tech processes
Electronics industry

Limits of oil vapor
Compressed air class 1 (EN ISO 8573-1): 0.01 mg/m³
Medical applications (EAB 407/1238): 0.1 mg/m³
Breathing apparatus (EN 12021): 0.5 mg/m³

Product features

Measures residual oil contents in compressed air and other gases
Can be used for permanent or in portable applications
Measures down to 0.003 mg/m³
Easy connection through sampling hose and quick connect
Output signals:
– 4 … 20 mA
– RS-485 / Modbus/RTU
– Relay switch (NO)
PID sensor for highest accuracy
Service and Alarm indication through LED
Connectable to CS-iTEC displays and data loggers as well as third parties displays and control units

Technical data

Technical data S 120
Measuring range	0.003 … 10.00 mg/m³
Sensor type	PID (photoionization detector)
Detection limit	0.003 mg/m³
Accuracy	5% of reading +- 0.003 mg/m³
Operating pressure	3 … 15 barg (higher pressure on request)
Gas humidity	< 40% rel. humidity, no condensation
Sample flow rate	< 2 l/min, measuring gas is released to ambient
Gas connection	6 mm quick connect
Electrical connection	M12 connector
Sensor life time	6000 operating hours. Will be indicated. Sensor exchange by service
Gas temperature	-20 … 50 ºC (at inlet)
Ambient conditions	-20 … 50 ºC
Transport temperature	-30 … +70 °C
Output signal	4…20 mA (0 … 10 mg/m³) RS-485, Modbus/RTU Relay: NO, 32 VDC / 500 mA
Power supply	24 VDC ± 5%, 8 W
Display & data logger	5” touch screen, 100 million values (option)
Application	Downstream of activated carbon filters Downstream of oil-free compressors Wherever upstream drying and filtration is applied
Casing/dimensions	PC, Al alloy, 271 X 205 X 91 mm
Classification	IP65
EMC	According to IEC 61326-1
Settings	Various sensor settings can be performed through CS-iTEC display units or through the related service software
Weight	2400 g
Sample rate	1 s

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