Specifications for the Vaisala Veriteq's Very Low Temperature Logger, the VL-1000-VLT.

Technical Specifications

Size

92x58x28mm
115g

Operating Range

-90° C to +35° C. and
0 to 100% RH non-condensing

Measurement Range

-90 to 0°C

Accuracy (1 Year)

+/- 1°C over -90° C to 0° C

Interfaces

RS-232 serial port; half-duplex; 19,200 baud. Contact factory for optional USB interface products.

Mounting

Magnetic strips; velcro optional

PC Software

Designed for use with Veriteq VeriteqLog Validatable software.

Clock

Temperature-compensated over operating range.

Electromagnetic Compatibility

FCC Part 15 and CE

Power Source

Internal lithium battery with life of 5 years at 1 min. sampling rate. Battery is factory-replaceable.

Memory Type

Non-volatile 32K x 8 EEPROM

Memory Size

26,900 12-bit samples

Memory Modes

User-selectable: Wrap when memory full (FIFO), or Stop when memory full.

Sample Rate

User-selectable (in intervals of 10 seconds) from once per minute to once per day.

Recording span

Recording span depends on sample interval selected. Table below details typical sampling rates and the length of time the data logger will retain data in memory before wrapping around or stopping (see Memory Modes).

Sample Interval	Recording Span
1 minute	18.7 days
5 minutes	3.1 months
15 minutes	9.3 months
1 hour	3.1 years

Memory Protection

Data retention > 20 years backup without power.

Warranty

Two years