SRO 100

	GMH	336 Mountain Way Drive Orem, UT 84058 U.S.A. Telephone: (801) 225-8970 Fax: (801) 225-9008 E-mail: info@gmheng.com
Engineering

SR0100 Programmable Frequency Digital Indicator

The SRO100 Programmable Digital Indicator may be used in any application requiring a programmable frequency counter with a scaled output. The SRO100 also includes a configurable power supply and measurement interface for use with other GMH Engineering products including the Delta DRS1000 Non-Contact Speed Sensor and the HFW80 Fifth Wheel.

The SRO100 has an easy to read backlit LCD display with six large digits. Besides displaying the measured value, the unit can record Max/Min readings and register Hi/Lo alarms with an audible beeper. The easy-access front keyboard provides straightforward menu navigation. Multiple configurations may be saved in the non-volatile memory with password protection.

The SRO100 can communicate with other intelligent systems via its built-in RS-232 and RS-485 serial communication ports enabling an external device to receive measurements and to control multiple SRO100 units.

Typical Applications

Speed measurements
Fluid flow measurements
Shaft speed measurements
Rate meter

Features

Six digit programmable frequency meter
Up to 1 MHz input frequency
Pulse or frequency input
RS-232 or RS-485 serial communication
Power supply connections for sensor
Large, backlit LCD for easy readability

Specifications

Input	Display Options
Pulse 0 to 12 V single-ended 0 to 5 V nominal differential 2 V nominal switching threshold	Lead zero blanking Decimal point Engineering Units Beep on/off Backlighting on/off
Frequency Measurement
Range: 1 to 999,999 Hz Resolution: 1 Hz Accuracy: 20 ppm (overall error) Transition rise/fall time: 30 ms max Update rate: 1 sample per second Smoothing: 1,2,4,8 sample averaging	Supply Voltage: 6.0 to 16.0 VDC (Your supply voltage should match your sensor's voltage requirements if you are using the SRO100's External Sensor Power Port without "Option 1")
Scale Factor Calibration: 2 pt linear	Supply Current: 30 mA
Serial Communication	External Sensor Power Port: SRO100 Supply voltage (1 A max) or optional 5 VDC regulated (400 A max)
Baud rates: 1200, 2400, 9600 & 19200 Protocols: RS-232 and RS-485 32 unique, user selectable addresses
Temperature Range: 32º to 120º F (0º to 50º C)	Weight: 0.5 lbs. (0.227 kg.)

Please contact GMH Engineering for price and delivery. (801) 225-8970 or info@gmheng.com

Information furnished by GMH Engineering is believed to be accurate and reliable. No responsibility is assumed by GMH Engineering for its use, whether correct or incorrect. Nor can GMH Engineering be held liable for consequences for any infringements of patents or other rights of third parties which may result from its use. Information in this document is current as of date of writing and is subject to change. Test data are representative of sensor performance under specific test conditions. Actual performance will vary with application and environment.