Lake Shore 234, User Manual

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Lake Shore Model 234/234D User’s Manual
Introduction 1-7
Table 1-1. Model 234 Specifications (Continued)
Output Electronic Accuracy:
Voltage: ±4.5 mV (±0.025% of full scale ±0.02% resistor accuracy)
Temperature Equivalence:
0 - 10 K 4.5 mK 0 - 200 K 90.0 mK
0 - 20 K 9.0 mK 0 - 300 K 135.0 mK
0 - 100 K 45.0 mK 75 - 325 K 112.5 mK
Output Temperature Coefficient:
Voltage: ±1.25 mV/°C (±0.01%/°C + ±0.0025%/°C of load resistor)
Temperature Equivalence:
0 - 10 K ±1.2 mK/°C 0 - 200 K ±25 mK/°C
0 - 20 K ±2.5 mK/°C 0 - 300 K ±36 mK/°C
0 - 100 K ±12 mK/°C 75 - 325 K ±30 mK/°C
COMPUTER INTERFACE
(For full serial interface specifications, see Table 4-1.)
Type: RS-232C Electrical Format, Serial Three-Wire
Connector: RJ11 telephone type jack
MECHANICAL
Ambient temperature range: 15 °C to 35 °C (59 °F to 95 °F)
Power requirement: +5 (±0.25) VDC, 500 mA (234) / 750 mA (234D)
234 Size: 12.8 cm (5 in.) high, 18.5 cm (7.3 in.) deep, 3 cm (1.2 in.) wide
234D Size: 4.4 cm (1.7 in.) high, 23 cm (9 in.) deep, 14 cm (5.5 in.) wide
234 Mounting: Euroboard end panel and back plane. Transmitter
does not use electrical bus format, only its physical
shape and power supply.
NOTES
1. Product Specifications are subject to change without notice.
2. Total system temperature accuracy in a given temperature range is
the sum of the specifications given for input, calibration, and output.