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Generates pulses and reads frequency. Converts any input into any output signal.
Powers, reads and simulates digital sensors. Sources and reads millivolts, Volts and milliamps.
Powers, reads and simulates 2-wire transmitters
Simultaneous input and output readings Outputs pre-set number of pulses Scale factors for flow readings Stop-watch pulse counting
TRANSMITTER SIMULATION AND CALIBRATION
To simulate process conditions model CLF-II can be connected to loop powered transmitter inputs, allowing easy performance tests on system software. For transmitter calibration model CLF-II offers an integral 24VDC power supply and loop current read-out. Transmitter readings may be scaled into engineering units like psi, pascal, bar etc. Readings in percents (%) on
4-20mA ranges can be obtained directly by pressing the "% /mA" key; useful when testing or adjusting alarm settings.
SIMULTANEOUS READINGS
Signal outputs and measurement inputs are fully electrically isolated from each other to read output and input simultaneously. This feature helps to observe related signals like signal converters, flow computers and controllers. Almost any input-output mix can be selected.
FUNCTIONS FOR PLC TESTING
Square wave pulses can be generated with frequencies from 0.01Hz to 10kHz. Pulse height is adjustable between 100mV and 24 Volts. Output can drive 34mA to simulate signals from photo-electrics, electro-magnetic sensors and proximity switches. With this powerful function the user can even test electro-mechanical devices such as counters and relays. Pulse generation can either be
"free running" or a "counted number". A counter input with adjustable thresholds offers you a test facility for your digital sensors.
SIGNAL CONVERTER FUNCTION
Any input can beconverted into any output signal.
For example, frequency can be converted into milliamps, Millivolts into Volts, Volts into millivolts etc. An input signal can be also be converted into a same type of output but with different zero and span settings like 4-20mA into
0-20mA or low frequency into high frequency. Zero and span settings for both input and output are fully programmable. These features enable the user to create a signal transmitter (converter) when a regular type of transmitter is not available.
EXTENDED USE ON ALKALINE BATTERIES
Thanks to low power CMOS components and the use of alkaline cells, CLF-II operates for more than 20 hours in the measurement mode from one set of alkaline batteries. Battery condition is monitored indicating replacement priorities at two levels. For bench use, tester may be line powered by using a battery eliminator adaptor.
FACTORY FLOOR DESIGN
The model CLF-II has been designed for use in industrial environments such as factory floors, process plants, service departments and maintenance workshops. The unit is rugged and has a raintight front. Connectors are suitable for use with 4mm test plugs. A strong and handy carrying case protects the tester when stored in a toolbox and accommodates the test leads and instructions. Special carrying straps allow you to use the tester hands-free.
INSTRUMENTATION CALIBRATION
Millivolts, Volts, milliamps, and frequency can be measured and generated at the same time. Both accuracy performance and stability allow you to calibrate field and control room instrumentation. Menu structured operation and LCD "man-machine" dialogues make the operating manual almost obsolete. Functions are available to ramp signals automatically and to store 2 to 6 pre-set output values. Pre-set values can be recalled manually or automatically with interval times between
10 and 100 seconds; a handy feature when stroking control valves.
FLOW COMPUTER TESTING
Special functions are available to simulate signals from turbine meters, Vortex flow transmitters and differential pressure flow transmitters. Scaling can be performed on both measurement and output signals on frequency and milliamp ranges. On both ranges the user can set the scale ends between
-9999 and +9999. In addition to the milliamp ranges, a square root function may be selected. Scaled readings may represent engineering units such as liters/min, gallons/hour etc. The "counted number of pulses" feature offers a unique test facility for batch counters, frequency and flow indicators.
| To Order (Specify Model No.) | ||
| Model No. | Price | Description |
| CLF-II | $1940 | Multi-Calibrator for PLC's & Control Systems |
| CLBPS | 110 | Charger/power supply |
| FTL | 55 | Test leads & small parts for CLF-II |
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