Product outline

F490A is a compact, lightweight handheld digital indicator for strain gauge type sensors that allows measurement of load, pressure and torque. The measurement data is recorded in CSV format in its internal memory, and the file can be referred to and copied through USB interface. F490A is equipped with fulfilling functions such as a variety of information displays, four types of hold functions including Peak and Bottom, multi-calibration function that enables storing six channels of calibration values and allows them to be selected by a field sensor, and a HO / LO limit comparison function. The operation of AA alkaline batteries provides continuous use for approx. 30 hours*.

* Connectable to 350 Ω series sensor while backlight is off.

Specifications

Analog section｜Display section｜Setting section｜Recorder｜Hold section｜Measuring mode｜Display mode｜Clock｜Interface｜General specifications｜Attachments

Analog section
Excitation voltage	DC 3 V±10%, Output current: within 35 mA
Signal input range	-3.0 to +3.0 mV/V
Calibration range	-3.0 to -0.05 mV/V, +0.05 to +3.0 mV/V
Accuracy	Non-linearity: within 0.02% FS (at 3.0 mV/V input) Zero drift: within 0.3 μV/℃ RTI Gain drift: within 5 ppm/℃
A/D converter	Speed: Selectable from 80, 400, or 1200 times/sec. Resolution: 24 bit (binary), Approx. 1/30000 at 3.0 mV/V input

Display section
Display unit	128 × 64 dot black and white LCD
Measured value	5 digits: -99999 to +99999, Sign: Character height: 14 mm
Status display	Status display 1: R(Recording)/ A(AC adapter on use)/ U(USB in connection)/ N(NOV RAM reading)/ B(Backup battery abnormal) Status display 2: HI/ OK/ LO/ PEAK/ BOTTOM/ HOLD

Setting section
Setting items	･ Tare/ equivalent input calibration/ span calibration/ zero calibration(one-touch zero)/ weight unit setting/ channel setting/ HI setting/ LO setting/ machine ID setting/ setting value lock ･ Unit/ digital filter/ MD(period, range)/ ZT(period, range)/ near zero/ digital zero/ minimum scale/ ADC sampling rate ･ Data/ buzzer/ backlight/ auto off/ version display/ memory check/ initialization ･ Hold: mode/ range/ start level/ end level/ monitoring time ･ Graph: time axis/ mode/ trigger edge/ trigger level/ pre-trigger ･ Operation mode/ HI/LO comparison mode/ measuring mode/ recording mode/ real-time output* * Not usable at simple operation mode

Setting section

Setting items

･ Tare*/ equivalent input calibration/ span calibration/ zero calibration(one-touch zero)/ weight unit setting*/ channel setting/ HI setting/ LO setting/ machine ID setting*/ setting value lock
･ Unit/ digital filter/ MD(period, range)/ ZT(period, range)/ near zero/ digital zero/ minimum scale/ ADC sampling rate
･ Data/ buzzer/ backlight/ auto off/ version display/ memory check/ initialization
･ Hold: mode/ range/ start level/ end level/ monitoring time
･ Graph: time axis*/ mode*/ trigger edge*/ trigger level*/ pre-trigger*
･ Operation mode/ HI/LO comparison mode/ measuring mode*/ recording mode*/ real-time output*
* Not usable at simple operation mode

Recorder
Recording function	･ Records when [REC] key is pressed ･ Records when stability is detected ･ Records the Hold value when the Hold is cancelled ･ Interval recording(records data at every fixed interval) ･ Records graph data(records data displayed in graph)
Recording media	Internal memory
Recording method	Text form of CSV format
Recording data	ID, number of recordings, recording data, measured channels, measured values, unit
Number of recording data	20,000 data

Hold section
	･ Hold Mode: Peak/ Bottom/ P-P/ Sample ･ Data monitoring range: All ranges/ level/ level+time

Measuring mode
	Load measuring/ counting

Display mode
	Measured value/ graph/ recorded data/ measured value (in mV/V equivalent)

Clock
Display	Year (last two digits), month, day, hour, minute
Accuracy	Lunar inequality 1 minute. (ordinary temperature)

Interface
	USB interface

General specifications
Internal power supply	AA alkaline batteries or Nickel metal-hydride rechargeable battery (4 pcs)
External power supply	Special AC adapter (Optional)
Power consumption	Approx. 60 mA (when a 120 Ω sensor is connected, backlight OFF) Approx. 70 mA (When a 120 Ω sensor is connected, back light ON)
Backup power supply	Lithium battery for storing of setting values and recorded data (stores up to 5 years or more)
Continuous usage duration	Approx. 30 hours (when connected to 350 Ω sensor with backlight OFF) Approx. 12 hours (when connected to 120 Ω sensor with backlight OFF)
Operating conditions	Operation temperature: -10℃ to +40℃ Humidity: 80% RH or lower（non-condensing)
External dimension	86(W) × 132(H) × 30(D) mm (Not including projections)
Weight	Approx. 290 g (including the 95 g weight of battery)
CE marking certification	EMC directives: EN61326-1 Safety standard: EN62311

Attachments
Sensor connector	1
AA alkaline battery	4
CD-ROM	1
Operation manual	1

Optional accessories

Model
AP0516	Special AC adapter
CA81-USB	USB Type-A – miniUSB cable 1.8 m
AP0520A	Special AC adapter (for free power source)
CBB-01-4W	4-wire terminal block connector
TM400 AC CABLE EU	AC cable (for Europe)

Please note that there are possibilities of individual differences in a color tone on display devices such as LEDs, fluorescent display tubes and LCDs due to manufacturing process or production lots.

Download

Operation manual(PDF)
Product catalogue(PDF)		⇒Download Page
External dimension	DXF （ZIP）
External dimension	PDF
Support tools
Software