8
The Advanced
®
Model 3250/4250 Service Manual
Model 3250 Osmometer Specifications
Electrical:
Voltage: 100 to 240 VAC (1.4 - 0.75 A)
Frequency: 50 or 60 Hz
Fuses: 2-Amp time delay (Type T) 250 VAC
Power: 95 Watts
Memory Backup: integral lithium cell; 10 years
min. (not user-replaceable)
Sample Volume: 0.2 or .25 mL
Sample Capacity: single sample
Readout: 20-character digital display
Units: mOsm/Kg H
2
O
Range:
Low: 0 to 2000 mOsm/Kg H
2
O
High: 1400 to 4000 mOsm/Kg H
2
O
Resolution: 1 mOsm/Kg H
2
O
Communications:
RS-232C and barcode scanner ports
Performance at Reference Conditions
1
Linearity: Less than ±0.5% from a straight line
Repeatability:
0 to 400 mOsm: Std. Deviation <
2 mOsm/Kg H
2
O
400 to 4000 mOsm: Std. Deviation < 0.5% of value
mOsm/Kg H
2
O
Drift: Less than 1 mOsm/Kg H
2
O per
month
Performance Over Operating Conditions
Temperature Effects: Less than 1 mOsm/Kg H
2
O
for every 5°C (9°F) ambient
temperature change.
Operating Conditions
Temperature: 18°C to 35°C (64°F to 95°F)
Room Humidity: 5 to 80% relative humidity;
(non-condensing)
Storage Temperature: -40°C to +45°C
(-40°F to +113°F)
Start-up Time: From stand-by: immediately
From power on: under 5 minutes
Test Time: Approximately 2 minutes per sample
in 0 to 2000 mOsm range; moderately
longer in high range.
Dimensions inches centimeters
Width: 13 32
Depth: 18 46
Height: 16 41
Weight pounds kilograms
Net: 23 10
Shipping: 34 15
Warranty: One-year limited warranty on work-
manship and all parts except glass,
plastic and parts warranted by their
makers.
Certification:
Refer to Regulatory Notices (see page 14) for appli-
cable standards.
Installation Class: I
Over-Voltage Category: II
Pollution Degree: 2
Moisture Protection: IPX0 (Ordinary)
1
Reference Conditions: 20 to 25°C (68 to 77°F); 40 to 60% Relative Humidity; tolerances of reference or calibration solutions
excluded.
Applies to Serial Suffix D and Higher. Refer to Design Changes for more information.
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