10
The Advanced
®
Model 3250/4250 Service Manual
Model 4250 Cryoscope Specifications
Electrical:
Voltage: 100 to 240 VAC (1.4 - 0.6 A)
Frequency: 50 or 60 Hz
Fuses: 2-Amp time delay (Type T) 250 VAC
Power: 95 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:
0 to -400 mºC: Std. Deviation <
2 mºC or mºH
-400 to -1000 mºC: Std. Deviation < 0.5% of value
mºC or mºH
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: 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)
Applies to Serial Suffix D and Higher. Refer to Design Changes for more information.
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