cec 4-126 Quick Start Manual

Description
The 4-126 is a seismic type velocity transducer designed for measuring vertical vibrations at temperatures up to +700°F (+371°C). A
seismic mass magnet moves on precision bearings. A coil is attached to the case and relative movement between the magnet and
coil produce the output signal when the case is in motion. This air damped system operates above its natural frequency and the
output is proportional to velocity. The sealed enclosure assures complete protection of the moving parts from external
contamination.
Specifications
Sensitivity
4-126-0001:
4-126-0104:
4-126-0110:
Frequency Range
4-126-0001:
4-126-0104:
4-126-0110:
Frequency Response
Amplitude Range
Acceleration Range
Linearity
Transverse Response
Temperature Range
Thermal Coefficient of Sensitivity
Damped Resonant Frequency
Excitation
Insulation Resistance
Polarity
Weight
Accessories Included
Optional Accessories
See Pg. 2 for Sensor Installation Information
Cable Assemblies
CEC manufactures many types of specialized cable assemblies for use with the various velocity sensor applications that exist. The
mating connector CEC P/N 173960 is the common connector used across the entire CEC velocity sensor product line. Following is
a list of several typical cable assemblies used with this sensor type:
Cable Assembly P/N
169500-XXXX
173970-XXXX
82406-XXXX
Note: The –XXXX of the cable assembly P/N represents the length in inches. Example: 10 ft. = 120 inches or -0120.
701225-25-XXXX
@+75°F (+24°C), 100 Hz, 2 IPS (50.8 mm/sec) RMS into a 10,000 ohm resistive load
145 ±4 mV/ips
135 ±4 mV/ips
145 ±4 mV/ips
45 – 1500 Hz
45 – 2000 Hz
45 – 2000 Hz
±7% of the mean sensitivity
0.15 inch peak-to-peak, maximum
1 to 50 g peak
±1% output at 20 g's within dynamic range (vertical at 100 Hz)
2% maximum
-65°F to +700°F (-54°C to +371°C)
0.02%/°F (0.01%°C) from +75°F (+25°C)
< 15 Hz nominal
Self-generating
0.1 meg-ohm minimum
Pin 1 is positive when case is moved away from base
6 oz (170 g)
Calibration Record
Cable and connector assembly (P/N 169500-XXXX)
Connector (P/N 173960)
Cable P/N Connector "A" P/N
167811
174123
168567 173960 "Special Low Temp"
Type 4-126
Velocity Vibration Transducer
Made in the United States of America
Connector "B" P/N
173960
173960-0002
Prepped Leads
Prepped Leads
Prepped Leads
1