9
The Advanced
®
Model 3250/4250 Service Manual
Model 4250 Cryoscope Specifications
Electrical:
Voltage: 100 to 130 VAC (1.2 A) or 200 to 250
VAC (0.6 A)
Frequency: 50 or 60 Hz
Fuses: 250V time delay (Type T):
2-Amp time delay for 100-130 VAC;
1-Amp time delay for 200-250 VAC
Power: 150 Watts
Memory Backup: integral lithium cell; 10-year
life (typical); (not user-
replaceable)
Sample Volume: 2.0 to 2.5 mL
Sample Capacity: single sample
Readout: 20-character vacuum fluorescent
display
Units: mºC or mºH
Range: 0 to 1000 mºC or mºH
Resolution: 1 mºC or mºH
Communications: On-board printer, DTE EIA-
232/V.24 (RS-232) serial port
and optional barcode scanner
Performance at Reference Conditions
1
Linearity: Less than ±0.5% from a straight line
Repeatability:
± 2 mºC or mºH (1 S.D.) between 0 and -400 mºC
± 0.5% (1 S.D.) between -400 and -1000 mºC
Drift: Less than 1 unit per month
Performance Over Operating Conditions
Temperature Effects: Less than 1 unit for every
5°C (9°F) ambient tempera
ture 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 90 seconds in 30-
second timed mode.
Dimensions inches centimeters
Width: 13.0 33.0
Depth: 18.0 45.7
Height: 12.0 30.5
with Head Up: 16.0 40.6
Weight pounds kilograms
Net: 28.0 12.7
Shipping: 39.0 17.7
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)
Applies to Serial Suffix A - C. Refer to Design Changes for more information.
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