Adhar Instruments & Services make VW Read Out Unit model AIS-1800 is microprocessor based recorder designed to measure most types of commercially available VW instruments requiring sweep excitation signal. The unit is portable, robust and suitable for harsh environment.
It is capable of storing and displaying time stamped engineering unit data. The unit will also simultaneously measure.

Specifications:
Sensors : Vibrating Wire and Thermistor
Frequency Range : 350Hz to 6000Hz with measuring time 0.01ms
Excitation to sensors : 5V typical square wave, peak to peak
Display : 16 characters, single line alpha numeric LCD
Engineering unit : me (micro strain),KSC (Kg/Cm²), kg, t, mm, m, C and degree
Calibration Factor : Programmable to linear gauge factor and polynomial
Date & Time : Real Time Clock for date & time
Computer interface : RS-232 Serial Interface with baud rate 1200,2400 selectable
Power requirement : 6V, 4AH field maintenance free rechargeable battery
Storage capacity : 8KB NVRAM, 700 data points
Operating Temperature : -10° to 80?
Date entry : Through membrane pad
Data Download Parity: None, Start & Stop Bit: Single, Hand Shake: Hardware, data bit: 8
Data transfer format: Text & Comma delimited ASCII,
Program required: HyperTerminal Rechargeable battery : 12V, 4Ah, up to 36 hrs. In continuous use