SKF CMSS 785 Series, User Manual

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Appendix A – product specifications
Measurement Capability*
Linear range 2 mm ( 78.7 mil )
Measurement range 0,25 to 2,25 mm (9.8 to 88.5 mil) from sensor tip
Scale factor 7,87 V/mm (200 mV/mil)
Scale factor tolerance ±5% for 5 m systems, ±6,5% for 9 m systems
Linearity (5 m systems) Within ±25 μm (±1 mil) of a straight line of 7,87 V/mm (200 mV/mil)
Linearity (9 m systems) Within ±38 μm (±1.5 mil) of a straight line of 7,87 V/mm (200 mV/mil)
Frequency response DC to 10 kHz (–3dB) – see frequency response graph, A2 below.
Maximum output voltage Approximately –23 V DC
Sensor fault output voltage Approximately –0,6 V DC (Probe OPEN/ Probe SHORT)
Environmental
Temperature limits
Probe –40 to +177 °C (–40 to +350 °F)
Extension Cable –40 to +177 °C (–40 to +350 °F)
Driver –40 to +80 °C (–40 to +176 °F)
System storage As per the driver rating: –40 to +80 °C (–40 to +176 °F)
Temperature characteristic*
Probe 0 to 80 °C - Less than ±3% of full scale
Extension cable 0 to 80 °C - Less than ±4% of full scale
Driver 0 to 60 °C - Less than ±3% of full scale
Loop 0 to 60 °C - Less than ±6% of full scale
Humidity range 30 to 95% RH (non-condensing, non-submerged). Probe only is 100% RH
Environmental Vibration
10 m/s
2
or less (10 to 150 Hz)
Probes and Extension cables
Sensor tip diameter Approximately 5 mm and 8 mm
System cable length 5 or 9 m
Maximum cable tension 98,1 N (10 kgf)
Minimum bend radius 30 mm (without armoured cable)
50 mm (with armoured cable)
Jam/locknut torque
CMSS 75-xU1
CMSS 75-xM1
CMSS 78-xU2
CMSS 78-xM2
1,4 Nm ( 15 kgf.cm ) – 5 mm UNF thread
4,0 Nm ( 41 kgf.cm ) – 5 mm metric thread
6,8 Nm ( 69 kgf.cm ) – 8 mm UNF thread
8,5 Nm ( 87 kgf.cm ) – 8 mm metric thread, including reverse mount
Driver
Power Requirement Within -25.5 VDC +/- 10%
Current consumption (10 kΩ load) Maximum 15 mA
Output impedance 50 Ω, current 5 mA (maximum)
Output noise Approximately 15 mV pk-pk + power supply noise
Dielectric strength of driver Between terminals and mounting plate: 1 mA or less ( 500 V AC / 1 minute )
Insulation resistance of driver Between terminals and mounting plate: 100 MΩ or more at 500 V DC
Terminal type Spring lock terminals
Wire gauge range (for the terminals) 0,2 to 1,5 mm 2 cross sectional area
Screwdriver (to open the terminals) Recommended flat tip screwdriver size: W 2,5 mm × T 0,4 mm
Fixing screw tightening torque 1,18 Nm (12 kgf.cm) or less (for panel mounting drivers)
Weight of driver Approximately 200 g (7 oz.)
* Under controlled conditions (in-situ / site tests may yield wider variances) Target material: JIS SCM440, flat surface, diameter > 15 mm, at
20 °C, 2 mm gap for temperature characteristic. JIS SCM440 is an equivalent to AISI 4140.
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