Model 2100
Engine and Transmission Test Stands

　

Direct mounting without cutting or modifying existing drive shafts Unaffected performance by torsional vibrations Measurement of torsional phenomena such as diesel firing pulse shape

　

The 2100 Systems are well suited for both short and long term testing, monitoring or controlling in those areas where other methods are affected by vibration, dust, moisture, high RPM's, and large axial and radial shaft movements. The pre-fabricated bolt-on collar makes for quick short term installations and the power induction system makes for carefree non-stop, long term operation.

The clamp-on collar is specifically machined to fit each application. This collar has a pre-assembled antenna and an installed transmitter in its machined pocket. The transmitter receives power from and broadcasts the data signal to the stationary loop of the induction supply module. The RF data signal is then carried to the receiver where it is converted to a high voltage bipolar output. The receiver has front panel locking controls for GAIN, ZERO, DISPLAY SCALE, RECEIVED SIGNAL STRENGTH, and IPS POWER adjustment.

Transmitters and receivers operating at different frequencies are available for up to 10 point of measurements. Transmitters located within approximately 10 feet of each other should always be at different frequencies.

SYSTEM COMPONENTS
System Includes:
	Model 2101	Single Channel Data Coupler
	Model 2102-2110	Dual Channel Data Coupler
	Model 2116S	Transmitter
	Model 2145A	Receiver
	Model 2175a	Induced Power Supply
	Model 2126A	Module Support Ring

　

SPECIFICATIONS

　

Transmitters:
	All 2100 systems use 2116S transmitters. Single or dual channel can be made in a battery-powered form in which case the 1219C transmitter is used.

　

	SENSOR INPUT		4 Arm Wheatstone Bridge or equivalent
	MAXIMUM SENSITIVITY		175 m in/in, ±50% input to ±10 Volts output
	DATA BANDWIDTH		DC to 1000 Hz
	SENSOR EXCITATION		6VDC Nominal, 18 mA max (350 Ohm minimum resistance)
	WEIGHT		± 17 grams (6 ounces)
	STATIC G FORCE		15,000 (orientation specific)
	VIBRATION		100g, 0-1 kHz (any axis)
	MODULE POWER CONSUMPTION		350 milliwatts
	POWER SOURCE		160 kHz induction power
	RF OPERATING FREQUENCIES		10.7 MHz to 16 MHz
	OPERATING TEMP. RANGE		-55°C to +125°C
	COMPENSATED TEMP. RANGE		0°C to +75°C
	CALIBRATION		CAT - Calibrate Any Time standard
	OPTIONS:
	DATA BANDWIDTH		DC to 2000 Hz
	COMPENSATED TEMP. RANGE		0°C to +125°C

　

Receivers:

　

	FULL SCALE DATA OUTPUT		± 10 VDC ± 10% @ 1mA maximum
	GAIN ADJUSTMENT RANGE		± 50 % of nominal
	ZERO ADJUSTMENT RANGE(@ max. sensitivity)		± 50% of full scale
	OPERATING TEMPERATURE RANGE		-15°C to +65°C
	COMPENSATED TEMPERATURE RANGE		0°C to +50°C
	POWER SOURCE		7.5 to 15 VDC adjustable
	RECEPTION FREQUENCIES		13 MHz to 22 MHz
	DATA BANDWIDTH		DC to 1000 Hz
	WEIGHT		2.7 Kg (6 pounds)
	DATA FILTER		Dynamic Range Constant time delay - 8 pole Bessel
	RF SENSITIVITY		-75db
	Options:
	INPUT POWER - DC		10-32 VDCOption A (10-18 VDC at 1500mA) or Option B (18-32 VDC at 800 mA)
	DATA BANDWIDTH		DC - 2000 Hz

　

Power Supply:
	The 2100 Series products use the 2175A Induction Power Supply (IPS) for systems up to 3 channels. Systems with 4 to 6 channels use 2175B and systems with 7 or more channels use 2175C. the 2175 IPS receives variable DC power via the coaxial cable connected to the receiver.
	The IPS contains an oscillator that operates at 160 kHz (-10, +20 kHz) whose signal is fed to current amplifiers. the current amplifiers drive a resonant transformer/capacitor circuit through the stationary antenna.
	The 160 kHz power is coupled into the rotating antenna loop as in an air core transformer. The RF signal is received from the rotation antenna loop capacitively. A toroid transformer in the IPS separates the RF signal from the 160 kHz and places it on the coaxial cable for routing to the receiver.

　

Module Support Ring:
	The 2126A High-Speed Collar is standard for the 2100 Series products. The collar is normally made from the highest strength fiberglass epoxy materials available. A strap-on collar which encloses the transmitter in a waterproof box is also available for certain applications.

　

	SHAFT CLEARANCE		±2 inch around the shaft
	PIECES		2 connected by 5/16 bolt
	ROTATING ANTENNA		Embedded in a groove .125 inch deep and .25 inch from outer circumference
	COLLAR GAPS		.06 inch (do not allow to touch)
	SHAFT SPEEDS		up to 15,000 RPM depending on shaft diameter

　

Antennas:
	The stationary antenna is normally made as a loop of 5/32 inch diameter brass. The two ends of the loop are mounted in the 2175 IPS.
	The rotation antenna is normally made of copper wire which is installed in the collar at the factory. Other forms are available.
	The typical gap between the rotating collar (antenna) and the stationary antenna is .25 to .50 inch. this allows for shaft movement.