Specifications - Extech Instruments SD900 User Manual

5. Specifications (at 23 ±5°C)
Display
Memory Card
Input Signal
Internal Resistance
Burden Voltage
Resolution
Accuracy
Datalogger Sampling Time
Data error number
Display update rate
Data Output
Operating Temperature
Operating Humidity
Power Supply
Battery life
Weight
Dimension
Note: Above specification tests performed under environmental RF Field Strength < 3 V/M &
frequency < 30 MHz only.
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60 mm x 50 mm (2.4 x 2.0") LCD
SD memory card, 1 GB to 16 GB (4G or less recommended)
0 to 20mA (3 channels)
10 Ohms
5.6V
0.01mA
± (0.5 % + 0.02mA)
1/2/5/10/30/60/120/300/600 seconds/auto
≤ 0.1% no. of total saved data typically
Approx. 1 second
RS232
0 to 50 °C (32 to 122°F)
< 85% R.H.
9V AC adaptor required for datalogging
6 AAA (UM4) Alkaline or heavy duty 1.5 V batteries are
used for clock backup and measurement display only.
Dependent on sample rate, for new alkaline batteries and
60 second sampling time, > one month is typical.
Fast sample rates will significantly reduce battery life.
The battery life will decrease if the beeper is set ON
199 g (0.44 lbs.)
132 x 80 x 32 mm (5.2 x 3.1 x 1.3")
ISO-9001 Certified
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