Omega RD100B manual Effects of Operating Conditions, Other Specifications, 12-20

12.6 General Specifications

Item	Specifications
Reference junction compensation accuracy
	Above 0°C with input terminal temperature balanced (60 minutes after power on)
	Type R, S, B, W, WRe: ±1.0°C
	Type K, J, E, T, N, L, U: ±0.5°C
Maximum input voltage	±10 VDC (continuous) for ranges of 200 mV or less, TC, RTD, and DI ranges
	±60 VDC (continuous) for 2 VDC or higher ranges
Input resistance	Approximately 10 MΩ or more for ranges of 200 mV or less and TC
	Approximately 1 MΩ for 2 VDC or higher ranges
Input source resistance	Volt, TC:	2 kΩ or less
	RTD input:	10 Ω or less per wire (The resistance of all three wires must be equal).
Bias current	10 nA or less (except when burnout detection function is enabled)
Common mode rejection ratio 120 dB (50/60 Hz ± 0.1%, 500 Ω unbalanced, between the minus terminal and ground)
Normal mode rejection ratio	40 dB or more (50/60 Hz ± 0.1%)
Noise rejection	By the integrating A/D converter: The integration time is 16.7 ms, 20 ms, or 100 ms (dot model)
	Low-pass filtering (pen model): Filter time constant is 2 s, 5 s, or 10 s
	Moving average (dot model):		The number of samples is 2 to 16.

Effects of Operating Conditions

Item	Specifications
Ambient temperature	With temperature variation of 10°C:
	Measurement: ±(0.1% of rdg + 1 digit) or less
	Recording:	Measurement fluctuation + ±0.2% of the recording span or less
	* Excluding the error of reference junction compensation
Power supply fluctuation	With variation within 90 to 132 V and 180 to 264 VAC (50/60 Hz):
	Measurement: ±1 digit or less
	Recording:	±0.1% of the recording span or less
	With variation of ±2 Hz from rated power frequency (power supply voltage 90 to 132, 180 to 264 VAC):
	Measurement: ±(0.1% of rdg + 1 digit) or less
	Recording:	Same as the measurement fluctuation
Magnetic field	AC (50/60 Hz) and DC 400 A/m fields:
	Measurement: ±(0.1% of rdg 10 digit) or less
	Recording:	±0.5% of the recording span or less
Input source resistance
DC voltage range	With variation of +1 kΩ:
	Ranges of 200 mV or less: Within ±10 ∝V
	Ranges of 2V or more:		±0.1% of rdg
TC range	With variation of +1 kΩ: ±10 ∝V or less
RTD range	With variation of 10 Ω per wire (resistance of all three wires must be equal):
	Measurement: ±(0.1% of rdg + 1 digit) or less
	Recording:	Measurement fluctuation + ±0.1% of the recording span or less
	With maximum difference of 40 mΩ between wires: Approx. 0.1°C (for Pt100)
Mounting position	With a backward tilt of 30° or less
	Measurement: ±(0.1% of rdg + 1 digit) or less
	Recording:	Indication fluctuation + ±0.1% of the recording span or less
Vibration	When a sinusoidal vibration along all three axis at a frequency between 10 to 60 Hz and an
	acceleration of 0.2 m/s2 is applied for 2 hours
	Measurement: ±(0.1% of rdg + 1 digit) or less
	Recording:	Indication fluctuation + ±0.1% of the recording span or less

Other Specifications

Item	Specifications
Clock	With a calendar function
Accuracy of clock	±100 ppm, excluding a delay (of 1 second, maximum) caused each time the power is turned on.
DST	The date/time for switching between standard time and DST can be specified.
Memory backup	A built-in lithium battery backs up the setup parameters and runs the clock
	(battery life: approximately ten years at room temperature).
Key lock function	Password for releasing the key lock can be set.
Key lock items	RCD key, MENU key, DISP MENU key, FEED key, and function under the FUNC key (Alarm ACK, computation start/
	stop, print, message, printout buffer clear, periodic printout reset, and pen or ribbon cassette exchange)
Internal light	Lights up the recording area of the chart paper. Uses a dedicated LED.
Noise	Machine Noise Information Ordinance 3.GSGV, Jan 18, 1991
	Maximum noise level: 60 dB (A) or less (complies with ISO7779)

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