Flowmeter Modules

Flowmeter modules

TTFM

Transit Time Flowmeter Module type 700

The HSE-TRANSONIC Transit Time Flowmeter (TTFM) is an ultrasonic flowmeter for animal research.
It is a coproduction of Hugo Sachs Elektronik and Transonic System Inc., USA and incorporates a complete one channel TRANSONIC ultrasonic transit time flowmeter. It can be used either with inline flow probes or perivascular probes.
An extensive selection of probes for vessel diameters from 0.25 to 36mm are available for chronic and acute studies. The extracorporal inline-probes, ideal for isolated organ preparations, are available in sizes from 1.2 to 22.2 mm.
The module features a built-in digital display for direct reading of mean flow and an analog instrument to show flow, signal quality and scale factors. The TTFM has mean and pulsatile outputs for recording, both can be used simultaneously.

Description

Digital Display shows average flow rate in ml/min or l/min

Analog Display for monitoring analog flow, quality of the ultrasound signal and scale factors. Analog Display shows also Flow signal in MEAS. mode, signal quality in TEST mode and scale factors in CAL mode

NORMAL/LOFLOW low flow scale selection for increased sensitivity (x4) on low flows

ZERO performs an automatic zero adjustment

MEAS/CAL/TEST switch to select the three modes MEASURE/CALIBRATION/TEST

ZERO/SCALE allows to adjust the zero value and to read in the scale factor of the connected probe

POLARITY Inverts the output flow signal in the case a flow probe was mounted in the wrong direction

FILTER three filter positions 100/30/10 Hz for smoothing the PULSATILE OUTPUT, 0.1 Hz fixed for MEAN OUTPUT

BNC OUTPUTS pulsatile and mean analog flow signals can be recorded from the corresponding BNC socket on the frontpanel

INTERNAL OUTPUTS pulsatile and mean analog flow signals are also available on the PLUGSYS system bus

SYNCHRONIZATION for applications with two or more TTFM modules a synchronization output or input can be connected on the PLUGSYS bus, a selector on the unit selects master or slave mode

Power supply 5V/600mA, through connector from PLUGSYS bus system

Dimensions module for PLUGSYS system, width 16E (80.8 mm), height 3U (128.7 mm), depth Europe size (220 mm)

Connector DIN 41612, 96-pin VG

Weight 800 g

EFM

Electromagnetic Flowmeter Module type 693

The HSE Electromagnetic flowmeter Module (EFM) is a plug-in module for the PLUGSYS measuring system. It has been developed to measure the arterial or venous bloodflow using perivascular flow probes in cardiovascular studies, or perfusate flow using cannulated flow probes in organ perfusion systems. The excitation and the input circuit are isolated (floating) to avoid measurement errors due to ground loops and leakage currents (potential separation between excitation coil, sensing electrodes and circuit ground of the PLUGSYS measuring system). The module features a built-in digital display for direct reading of mean flow and an analog display for watching the pulsatile signal . Four flow ranges can be selected, the flow range depends on the flowprobe. The instrument has mean and pulsatile outputs for recording, both can be recorded simultaneously. An electronic circuit allows to synchronize two or more units in the same PLUGSYS system case.

Description

Excitation modified square wave 1 kHz, constant current 500 mA through 2-pin connector, floating output

Input floating input, differential through 3-pin connector, input impedance 20 MOhm, Common mode rejection ratio > 100.000 : 1

Flow range ±100.0 ml/min, ±1000 ml/min, ±10.00 l/min, ±100.0 l/min

Signal output a) on front panel through BNC sockets ± 10 Volt FS, pulsatile and mean
b) through bus connector to PLUGSYS measuring system (jumper selectable) ± 10 Volt FS, pulsatile and mean

Flow direction can be inverted by the switch POLARITY

Output low-pass filter a) on pulsatile output 7 positions 0.1 - 100 Hz selected by rotary switch
b) on mean output selectable by switch: 1 sec or 5 sec

Analog indication through LED bargraph +20 LED´s / -9 LED´s for visual check of the pulsatile signal. Sensitivity 50 mV / LED

Digital indication 4½-digit LED display (decimal point automatically set by the range selector)

Calibration the recording output can be calibrated using the CAL-FACTOR switch, the gain calibration is controlled by the CAL-FACTOR switch and the calibration push-button SET according to the calibration factor of the probe.

Zero flow automatic zero adjustment by pressing a button

Synchronization synchronization output or input can be connected to the PLUGSYS bus for synchronization of more units, a selector on the unit selects the master or slave mode

Power Supply 5V 0.4 A and 24V 0.8 A through connector from the PLUGSYS bus system

Dimensions Module for 19" rack, width 12 E (60.6 mm), height 3 U (128.7 mm), depth Eurocard size (220 mm)

Connector DIN 41612, 96-pin VG

Weight 400 g

HUGO SACHS ELEKTRONIK-HARVARD APPARATUS GmbH
Gruenstrasse 1 · D-79232 March-Hugstetten · GERMANY
Phone: +49 (0) 76 65 - 92 00-0 · Fax: +49 (0) 76 65 - 92 00-90

Description
Digital Display	shows average flow rate in ml/min or l/min
Analog Display	for monitoring analog flow, quality of the ultrasound signal and scale factors. Analog Display shows also Flow signal in MEAS. mode, signal quality in TEST mode and scale factors in CAL mode
NORMAL/LOFLOW	low flow scale selection for increased sensitivity (x4) on low flows
ZERO	performs an automatic zero adjustment
MEAS/CAL/TEST	switch to select the three modes MEASURE/CALIBRATION/TEST
ZERO/SCALE	allows to adjust the zero value and to read in the scale factor of the connected probe
POLARITY	Inverts the output flow signal in the case a flow probe was mounted in the wrong direction
FILTER	three filter positions 100/30/10 Hz for smoothing the PULSATILE OUTPUT, 0.1 Hz fixed for MEAN OUTPUT
BNC OUTPUTS	pulsatile and mean analog flow signals can be recorded from the corresponding BNC socket on the frontpanel
INTERNAL OUTPUTS	pulsatile and mean analog flow signals are also available on the PLUGSYS system bus
SYNCHRONIZATION	for applications with two or more TTFM modules a synchronization output or input can be connected on the PLUGSYS bus, a selector on the unit selects master or slave mode
Power supply	5V/600mA, through connector from PLUGSYS bus system
Dimensions	module for PLUGSYS system, width 16E (80.8 mm), height 3U (128.7 mm), depth Europe size (220 mm)
Connector	DIN 41612, 96-pin VG
Weight	800 g

Description
Excitation	modified square wave 1 kHz, constant current 500 mA through 2-pin connector, floating output
Input	floating input, differential through 3-pin connector, input impedance 20 MOhm, Common mode rejection ratio > 100.000 : 1
Flow range	±100.0 ml/min, ±1000 ml/min, ±10.00 l/min, ±100.0 l/min
Signal output	a) on front panel through BNC sockets ± 10 Volt FS, pulsatile and mean b) through bus connector to PLUGSYS measuring system (jumper selectable) ± 10 Volt FS, pulsatile and mean
Flow direction	can be inverted by the switch POLARITY
Output low-pass filter	a) on pulsatile output 7 positions 0.1 - 100 Hz selected by rotary switch b) on mean output selectable by switch: 1 sec or 5 sec
Analog indication	through LED bargraph +20 LED´s / -9 LED´s for visual check of the pulsatile signal. Sensitivity 50 mV / LED
Digital indication	4½-digit LED display (decimal point automatically set by the range selector)
Calibration	the recording output can be calibrated using the CAL-FACTOR switch, the gain calibration is controlled by the CAL-FACTOR switch and the calibration push-button SET according to the calibration factor of the probe.
Zero flow	automatic zero adjustment by pressing a button
Synchronization	synchronization output or input can be connected to the PLUGSYS bus for synchronization of more units, a selector on the unit selects the master or slave mode
Power Supply	5V 0.4 A and 24V 0.8 A through connector from the PLUGSYS bus system
Dimensions	Module for 19" rack, width 12 E (60.6 mm), height 3 U (128.7 mm), depth Eurocard size (220 mm)
Connector	DIN 41612, 96-pin VG
Weight	400 g