Telemetry Systems
Brake Testing • Fatigue Analysis
Powertrain • Efficiency Testing
Automotive • Aerospace
Military • Heavy Equipment
• Strain Gage or Thermocouple Based Measurements
• Non Contacting Digital Wireless Link
• Transmitter Powered by Induction or Battery
• ± 10V Analog Voltage Output
• Ruggedized and Weather Sealed
www.michsci.com
Michigan Scientific
Corporation
Series 320
Digital Telemetry Components
Fixed Gain
Strain Gage Transmitter
Thermocouple
Transmitter
Programmable Gain
Strain Gage Transmitter
Transmitter Options
+
Receiver
Or
Induction Power
Receiver/Induction Power Options
Battery Power
Split Collar
Transmitter
Induction Power
Paddle Type Primary
Transmitter Power Options
Receiver and
Induction Power
Induction Power
Loop Type Primary
TELEMETRY
Driveline Measurements
Propshaft Torque
Paddle Style Primary Coil
The Primary Induction Coil is housed in a
sealed “Paddle”form factor. This is useful
for installations where rugged mounting
is needed, and where there is little relative
motion between the primary and
secondary.
Primary Induction Coil
Paddle Style
Instrumentation Examples
• Flexplate Torque
• Half Shaft Torque
• Driveshaft Torque
Measurement of Vehicle Propshaft Torque
Split Collar Secondary
Induction Coil
Halfshaft Torque
Coil Loop Primary Coil
The primary loop induction coil allows
for more relative motion between the
primary and secondary coils. A typical
application is Half Shaft torque with a
telemetry split collar.
Accomidates relatively large
radial and axial displacements.
Measurement of Vehicle Half Shaft Torque
TELEMETRY
Acceleration From Rest Then Brake Stop
1,200
Flexplate Torque (average)
1,000
Left Front Half Shaft Torque
800
Rear Propshaft Torque
Torque (Nm)
600
400
200
0
-200
-400
-600
0
2
4
6
8
10
12
Time (sec)
14
16
18
Acceleration From Rest Then Brake Stop
Flexplate Torque Engine Firing Pulses
800
Torque (Nm)
150
Torque (Nm)
600
400
100
50
0
-50
-100
200
Flexplate Torque
Flexplate Torque (average)
0
-200
Flexplate Torque
Flexplate Torque (average)
-400
0
2
4
6
8
10
12
Time (sec)
14
16
18
TELEMETRY
Flexplate Measurements
Multichannel Telemetry Receiver
The Telemetry Induction Power and Receiver
electroncs are available separately or combined
in a single enclosure. The Induction Power
energizes a primary power loop or paddle coil to
wirelessly transfer power to a secondary coil which
then powers the telemetry transmitters.
Receiver/ Induction Combined
Primary Induction
Power Regulator
Secondary Induction
Telemetry Transmit-
Dynamic Engine Torque Measurement
General Specifications
PARAMETER
SPECIFICATION
Transmitter
Analog channels
up to 3 (strain gage or thermocouple)
Bridge excitation voltage
3.0 VDC
Bridge amplifier input range
customer specified
Channel Filter Selection
2-pole low-pass, customer specified (1kHz typ)
Data sampling rate
3 kHz all channels sampled simultaneously
System resolution
12 bits
Channel to channel skew
(sample and hold)
Operating temperature
-40°F to +257°F ( - 40°C to +125°C)
Power requirement
4 to 9 VDC / 35 mA not including strain gages
Dimension (L x W x H)
1.50 x 1.60 x 0.35 in. (38.1 x 40.64 x 8.89 mm)
Weight
0.88 oz. (25g)
Receiver
Output at full scale
± 10 V
Output resolution
0.0244% Over +/- 10 Volts
Channel filter type
2-pole low-pass Bessel
Channel filter selection
100Hz, 1kHz (jumper selectable)
Current output per channel
±10mA
Operating temperature
-40°F to +158°F (- 40°C to +70°C)
RF antenna connector
reverse polarity SMA
Power requirement
9 to 36VDC / 500mA
Dimensions (L x W x H)
9.25 x 3.5 x 1.75 in. (235 x 88.9 x 45.47 mm)
System General
Total system delay (unfiltered data)
<670 μs Max
RF channels available
16 Min
321 East Huron Street
Milford, Michigan 48381
Tel: 248-685-3939
Fax: 248-684-5406
http://www.michsci.com
Michigan Scientific
Corporation
Email: mscinfo@michsci.com