These advanced instruments provide engineering unit display of a strain gage (mV/V) input and a frequency input. They also compute power and perform 21 functions including limit checks, tare, hold, and max/min capture. You needn't write code or add hardware to be up-and-running a productive test.

The two line alphanumeric readout displays measured and computed data, units of measure and test status. Transducer calibrations are fully automatic, requiring no manual adjustments.

Features

Reads, Displays, Processes And Outputs
Shaft Torque, Speed, Power
Pump/Motor Head, Flow, Fluid Power
Drawbar Force, Velocity, Power
Fast, Rock Solid Readings With High Noise Immunity
2000 Samples/Sec. For Torque, Head Or Drawbar Force Input
1 Millisecond Response For Speed, Flow Or Velocity Input
6 Digit Engineering Unit Display With Legends And 0.01% Resolution
Rs232, Rs422 Or Rs485 Serial Communication
Auto-Scaled ?5v And/Or ?10v Analog Outputs
No Pots, Batteries, Fans, Maintenance, Or External Power Supplies
CE Marked

Compatibility

These instruments are compatible with one 80 to 2000O strain gage bridge, ac or dc excited, and one frequency output sensor. They are particularly well suited for mV/V torque, force, and pressure sensors, and frequency producing speed, flow and velocity transducers.

They are compatible with Himmelstein Torquemeter Models: MCRT 2800T Series, MCRT 28000T Series, MCRT 2900T Series, MCRT 29000T Series, MCRT 27000T Series Wheel Torquemeters and all earlier model Himmelstein Torquemeters. Please consult factory for verification.

Specifications

Strain Gage Input		Any 80.© to 2k.© transducer, directly wired or transformer coupled. 4, 6, or 7 wire circuits are accommodated.
Transducer Excitation		3Vrms, 3030Hz �0.01% sine wave. Regulated, and short circuit protected.
Sensitivity		0.5 to 5mV/V with 50% overrange; automatically scaled.
Input Impedance		100M.© in parallel with 33pF.
Automatic Null		In Phase: �10% of F.S. (with 50% overrange), �60% of F.S. (with 0% overrange). Quadrature: �1mV/V.
Auto Calibration		Dual polarity shunt calibration with provision for CAL resistor feedback.
Spurious Signal Rejection		60Hz: 120dB common mode, 100dB normal mode. Carrier quadrature: 60dB.
Antialias Filter		200Hz, 7 pole Bessel response filter.
Low Pass Filtering		4 pole Bessel response digital filter with 11 cutoff frequencies from 0.1 to 200Hz in 1-2-5 steps.
Signal-to-Noise Ratio¹		with 1/10/100/200Hz filters 86/76/66/62dB @ 1mV/V F.S. and 86/80/72/66dB @ 5mV/V F.S.
Resolution		0.01% of F.S.
Overall Accuracy (at 77^oF/25^oC)		0.02% of F.S., worst case.
Temperature Effects		Zero: �ð"0.001% of F.S./^oF (max); Span: �0.001% of F.S./^oF (max).
Frequency Input		Any uni-directional or bi-directional (quadrature) source including self generating and zero velocity magnetic pickups, optical encoders, flowmeters, etc. When used with bi-directional sensors, the conditioner outputs both *direction* and *magnitude*.
Input Impedance and Configuration		Differential or single ended inputs. 100k.© differential, 50k.© single ended.
Input Threshold (keypad selectable)		10, 20, 50, 100, or 200mVpk-pk (between inputs) or TTL.
Maximum Voltage		�130VDC or 130Vrms.
Input Signal Bandwidth		0.001 to 200kHz (10 to 200mV pk-pk threshold), 0.001 to 400kHz (TTL threshold).
Display Ranges and Resolution		Rangeless (use any F.S. Engineering Unit value) with 50% overrange. Resolution is 0.01% of F.S.
Low Pass Filter (keypad selectable)		20kHz (-3dB) or none. This filter is not available for TTL inputs.
Response Time		Greater of: 1 ms, typical (2 ms worst case) or the input pulse length.
Common Mode Rejection		80dB (60Hz), 55dB (0 to 10kHz).
Low Pass Filtering of Sampled Data		Unfiltered or 4 pole Bessel filter. Cutoff frequencies from 0.1 to 100 Hz in 1-2-5 steps.
Overall Accuracy		0.01% of F.S. @ +77^oF (+25^oC), 0.015% of F.S. @ +41^oF to +122^oF (+5^oC to +50^oC).
Excitation Supplies		+12V@125mA² or +5V@250mA². short circuit (current limit) and overvoltage (fuses) protected.
Maximum Transducer Cable Length		500ft except 200ft for 100.© or lower strain gage transducers.
System Display		2 line by 16 alphanumeric characters, each 0.2" wide by 0.3" high. Backlit LCD with adjustable contrast.
Views		Select either 2 Channels, 1 Channel with Limit Status, or 1 Channel with I/O Status.
Data Displayed		Select from Current, Max, Min, Spread, Held data and Tare value.
Data Format		Engineering units with 6 digits (1-2-5 format) and 5 character, upper or lower case, user-entered legend/descriptor.
System Response (per channel)		Data Sampling & Max/Min Update Rates: 2000Hz (hardware channels), 50Hz (CH3 calculation). Limit Checking Rate: 1000Hz (hardware channels), 50Hz (CH3 calculation). Logic I/O Response Time: 1ms (hardware channels), 20ms (CH3 calculation). Update Rate for Each Analog Output: 1000Hz.
System Control		All I/O functions can be OR�d in any combination. The pattern function adds ANDing capabilities.
Input Actions/Channel		Logic inputs, outputs, and internal Matrix signals control following actions. Tare, Clear Tare, Hold, Clear Hold, Reset Max/Min, Clear Latched Limits, Check Limits, Do Max/Mins, Apply +ð%CAL, Apply -ð&CAL.
Output Events/Channel		The following events drive Logic outputs and internal Matrix signals. HI Limit, NOT HI Limit, IN Limit, NOT IN Limit, LO Limit, NOT LO Limit, At Max, NOT At Max, At Min, NOT At Min.
Three User-defined Patterns		Patterns of Logic inputs, outputs and Matrix signals drive Logic outputs and internal Matrix signals.
Limit Checking		Each channel has a HI and LO limit which may be latched or unlatched, absolute or signed, and with or without hysteresis. Select either Current, Max, Min, Spread or Held data for limit checking. Limit violations on any or all channels can be set to trigger backlight flashing in any of the display view modes.
Four Logic Inputs		Each with programmable destination, protected to �130VDC or 130Vrms.
Type		TTL compatible, Schmitt Trigger, low-true with 47k.© pull-up. Input current is -100.¼A @ 0V.
Six Logic Outputs		Each with programmable source, short circuit (current and thermal limits) and overvoltage (fuse) protected.
Type		Open collector, low-true. Operating @ 24V (max) and 0.3A max sink current.
External +5VDC Power (on I/O connector)		250mA, short circuit (current limit) and overvoltage (fuse) protected.
Serial Communication Port		(selectable as RS232, RS422, or RS485. Supports 32 devices on RS485 port and 1 device on RS232/422)
BAUD Rate		300 to 38400. Maximum Cable Length: 4000ft (RS422/RS485), 50ft (RS232).
120.© Termination Resistors (RS485)		user selectable for RXD and TXD.
RS422/485 Transceivers		Slew-rate limited, short circuit protected (current & thermal limits).
RS232 Drivers		Short circuit protected (current limit).
Serial I/O�s		Use a 9 pin D connector. They are ð"15kV ESD protected and float (100k.©) with respect to Earth Ground.
Notes:		1. The ratio expressed in decibels (dB), of Full Scale to noise spread. Measurements are made for a 1 minute interval using a 350.© bridge. 2. Both excitation voltages can be used simultaneously with the following restrictions: 4.8 x (12V current) + (5V current) "d700mA AND 12V current "d 125mA AND 5V current "d 250mA 3 Applies to strain gage channel only. Frequency measurement is absolute with guaranteed accuracy and only requires user engineering unit scaling. 4. Specification is subject to change without notice.

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