Omega RD100B manual Standard Performance, Specifications 12-19, Resolution, Excludes, ON/OFF input

12.6 General Specifications

Standard Performance

Item		Specifications
Measurement and recording accuracy
		The following specifications apply to operation of the recorder under standard operation conditions:
		Temperature:		23 ± 2°C
		Humidity:		55% ± 10%RH
		Power supply voltage:		90 to 132 or 180 to 264 VAC
		Power supply frequency: 50/60 Hz ± 1%
		Warm-up time:		At least 30 minutes.
		Other ambient conditions such as vibration should not adversely affect the operation
	Input Type	Range Type	Measurement (Digital Display)				Recording (Trend)
			Measurement Accuracy		Highest Res.	Recording Accuracy		Resolution
	DC voltage	20 mV			10 ∝V		Measurement	Pen model:
		60 mV			10 ∝V		accuracy	Dead band 0.2%
							± (0.3% of	of recording span
		200 mV			100 ∝V
							recording span)	Dot model:
		2 V	±(0.1% of rdg + 2 digits)		1 mV
								Resolution 0.1 mm
		6 V			1 mV
		20 V			10 mV
		50 V	±(0.1% of rdg + 2 digits)		10 mV
	DC voltage	1-5 V	±(0.1% of rdg + 2 digits)		1 mV
	TC	R	±(0.15% of rdg + 1)		0.1°C
		S	except R,S: 0 to 100°C, ±3.7°C
	(excludes	B	100 to 300°C, ±1.5°C
	RJC		B: 400 to 600°C, ±2°C
	accuracy)		Accuracy not warranted for
			values less than 400°C
		K	±(0.15% of rdg + 0.7°C)
			except ±(0.15% of rdg + 1°C)
			for –200 to –100°C
		E	±(0.15% of rdg + 0.5°C)
		J	±(0.15% of rdg + 0.5°C)
		T	except ±(0.15% of rdg + 0.7°C)
			for J: –200 to –100°C
		N	±(0.15% of rdg + 0.7°C)
		W	±(0.15% of rdg + 1°C)
		L	±(0.15% of rdg + 0.5°C)
		U
			except ±(0.15% of rdg + 0.7°C)
			for L: –200 to –100°C
		WRe	±(0.2% of rdg + 1°C)
	RTD	Pt100	±(0.15% of rdg + 0.3°C)
		JPt100
	ON/OFF input	Level	Threshold level (2.4 V)		–		–
		Contact	accuracy ± 0.1 V
			≤ 1 KΩ: ON, ≥ 100 kΩ: OFF
			(Parallel capacitance
			0.01 ∝F or less)

Measuring accuracy in case of linear scaling

Accuracy during scaling (digits) = measuring accuracy (digits) ⋅ multiplier + 2 digits (rounded up) where the multiplier = scaling span (digits)/measuring span (digits).

Example: Assuming that

• range type:	1-5 V
• measuring span:	1.000 to 5.000 V
• scaling span:	0.000 to 2.000 Then,

Measuring accuracy = ±(0.1% ⋅ 5 V + 2 digits)

=±(0.005 V [5 digits] + 2 digits)

=±7 digits

Multiplier = {2000 digits (0.000 to 2.000)}/4000 digits (1.000 to5.000) = 0.5

Accuracy during scaling = ±(7 ⋅ 0.5 + 2) digits = 6 digits (rounded up)

Reference junction compensation

Internal/External selectable for each channel

12

Specifications

12-19