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Model 211 specifications

Input specifications

Sensor type	Sensor temperature coefficient	Input range	Excitation current	Display resolution	Measurement resolution	Electronic accuracy	Instrument temperature coefficient
Silicon diode	negative	0 V to 2.5 V	10 µA ±0.05%⁸	100 µV	20 µV	±200 µV ±0.01% of rdg	±10 µV ±5 PPM of rdg/°C
GaAlAs diode	negative	0 V to 7.5 V	10 µA ±0.05%⁸	100 µV	20 µV	±350 µV ±0.02% of rdg	±20 µV ±5 PPM of rdg/°C
100 Ω platinum RTD, 250 Ω full scale	positive	0 Ω to 250 Ω	1 mA ±0.3%⁹	10 mΩ	2 mΩ	±0.004 Ω ±0.02% of rdg	±0.2 mΩ ±5 PPM of rdg/°C
100 Ω platinum RTD, 500 Ω full scale	positive	0 Ω to 500 Ω	1 mA ±0.3%⁹	10 mΩ	2 mΩ	±0.004 Ω ±0.02% of rdg	±0.2 mΩ ±5 PPM of rdg/°C
1000 Ω platinum RTD	positive	0 Ω to 5000 Ω	1 mA ±0.3%⁹	100 mΩ	20 mΩ	±0.06 Ω ±0.04% of rdg	±2.0 mΩ ±5 PPM of rdg/°C
Cernox^® RTD	negative	0 Ω to 7500 Ω	10 µA ±0.05%⁸	100 mΩ	50 mΩ	±0.8 Ω ±0.04% of rdg	±20 mΩ ±15 PPM of rdg/°C

⁸ Current source error has negligible effect on measurement accuracy
⁹ Current source error is removed during calibration

Thermometry

Number of inputs	1
Input configuration	Inputs can be configured from the front panel to accept any of the supported input types
Isolation	Measurement is not isolated from chassis ground
A/D resolution	24-bit
Input accuracy	Sensor dependent—refer to Input Specifications table
Measurement resolution	Sensor dependent—refer to Input Specifications table
Maximum update rate	7 rdg/s
User curve	One 200-point CalCurve™ or user curve in non-volatile memory

Sensor input configuration

	Diode/RTD
Measurement type	4-lead differential
Excitation	Constant current
Supported sensors	Diodes: Silicon, GaAlAs RTDs: 100 Ω platinum, 1000 Ω platinum, Carbon-glass, Cernox^®, and Rox™
Standard curves	DT-470, DT-670, CTI-C, PT-100, and PT-1000
Input connector	Shared 25-pin D-sub

Front panel

Display	5-digit LED
Number of reading displays	1
Display Units	K, ºC, ºF, V, and Ω
Reading source	Temperature and sensor units
Display update rate	2 rdg/s
Temp display resolution	0.001º from 0º to 99.999º, 0.01º from 100º to 999.99º, 0.1º above 1000º
Sensor units display resolution	Sensor dependent, to 5 digits
Display annunciators	K, °C, °F, V/Ω
Keypad	4 full travel keys, numeric and specific functions
Front panel features	Display brightness control, keypad lock-out

Interface

Serial interface
Electrical format	RS-232C
Max baud rate	9600 baud
Connector	9-pin D-sub
Reading rate	Up to 7 rdg/s
Software support	LabVIEW™ driver
Alarms
Number	2, high and low
Data source	Temperature
Settings	High setpoint, Low setpoint, Dead band, Latching or Non-latching
Actuators	Display message, relays
Relays
Number	2
Contacts	Normally open (NO), normally closed (NC), and common (C)
Contact rating	30 VDC at 1 A
Operation	Activate relays on high or low input alarm or manual
Connector	Shared 25-pin D-sub
Analog output
Isolation	Output is not isolated from chassis ground
Update rate	7 rdg/s
Data source	Temperature

	*Voltage*	*Current*
Range	0 V to 10 V	4 mA to 20 mA
Accuracy	±1.25 mV	±5.0 µA
Resolution	0.3 mV	0.6 µA
Min load resistance	500 Ω	NA
Compliance voltage	NA	10 V
Load regulation	NA	±0.02% of reading 0 to 500 Ω

	*Temperature*	*Sensor units (fixed by type)*
Scales:	0 K to 20 K	Diodes: 1 V = 1 V
	0 K to 100 K	100 Ω platinum: 1 V = 100 Ω
	0 K to 200 K	1000 Ω platinum: 1 V = 1000 Ω
	0 K to 325 K	NTC resistor: 1 V = 1000 Ω
	0 K to 475 K
	0 K to 1000 K

Settings	Voltage or current, scale
Connector	Shared 25-pin D-sub

General

Ambient temperature range	15 °C to 35 °C at rated accuracy, 10 ºC to 40 ºC at reduced accuracy
Power requirements	Regulated +5 VDC at 400 mA
Size	96 mm W × 48 mm H × 166 mm D (3.8 in × 1.9 in × 6.5 in)
Mounting	Panel mount into 91 mm W × 44 mm H (3.6 in × 1.7 in) cutout
Weight	0.45 kg (1 lb)
Approvals	CE mark, RoHS

Power supply (109-132)

Power requirements	100 to 240 VAC, 50 or 60 Hz, 0.3 A max
Output	+5 V at 1.5 A
Size	40.5 mm W × 30 mm H × 64 mm D (1.6 in × 1.2 in × 2.5 in)
Weight	0.15 kg (0.33 lb)

2111 Single 1/4 DIN panel-mount adapter

2112 Dual 1/4 DIN panel-mount adapter

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