• Self-powered data logger connects directly with commonly available thermocouple temperature probes


• Single & multi-input data logger models record temperature from
  
  -240° C to 1760° C


• User-configurable data logger inputs accept type J, K, T, E, R and S thermocouples


• High impedance inputs maximize accuracy and allow use with long or thin gauge thermocouple probes


• Automatic cold junction temperature compensation


• Completely self-contained with internal memory and ten-year battery

Veriteq VL-1700 Thermocouple temperature data loggers are accurate and easy to use recorders designed for a broad range of industrial temperature measurement applications.

Compact Alternative to Chart Recorders

Compact and efficient alternatives to chart recorders and bulky data acquisition systems, VL-1700 loggers are fully compatible with any type J, K, T, E, R and S thermocouple probe. Equipped with a ten-year lithium battery and an internal non-volatile memory, each data logger features multi-year data capacity and full-range cold-junction temperature compensation. Available in both narrow and wide range versions, they provide reliable and high accuracy temperature monitoring from -240° C to 1760° C.

Easy to Set up and Use

VL-1700 data loggers require no programming or complicated equations. To operate, simply select a thermocouple type, make your connections to the terminal block, and begin recording. The recorders are completely self-contained and self-powered, eliminating the need for bulky transmitters, signal conditioners or external power sources, making them a convenient choice for remote in-field applications.

Simple yet powerful data logging software

Specifications

General

Size	2.8 x 2.1 x 0.7" (71x53x18mm); 60g (2.2 oz.)
Operating Range	-40 to 85° C. (-40 to 185° F.) and 0 to 95% RH
Interfaces	RS-232 serial port; Ethernet; PoE
Mounting	Magnetic strips; Velcro optional
PC Software	Compatible with the following software packages: Veriteq vLog, Veriteq viewLinc (for on-going monitoring & alarming), Veriteq sGo (for Palm OS).
Clock	Accuracy: +/- 1 min./month at 0 to 50° C.
Electromagnetic Interference	Meets FCC Part 15 for digital devices; meets CE requirements for radiated emissions, electrostatic discharge, & radiated susceptibility.
Power Source	Internal lithium battery with life of 10 years at 1 min. sampling rate.

System Operation

Series 1700 Thermocouple dataloggers record low-level millivolt thermocouple signals. The system automatically processes these signals and references them to the logger's on-board cold junction temperature sensor to produce accurate temperature readings.Two types of Series 1700 dataloggers are available: The narrow range "N" series provides high precision and exceptional low-temperature performance; the wide range "W" series provides a broader temperature measurement range ideal for high temperature applications. The following two charts detail the input specifications , measurement ranges, and rated accuracies of these two series of units.

Data Logger Inputs

1700 Series Type	1700 Series Models	No. of Channels
		Total	CJT	Thermocouple
Narrow Range	1700-21N	2	1	1
	1700-51N	5	1	4
Wide Range	1700-21W	2	1	1
	1700-51W	5	1	4

Thermocouple Input Channels

Compatible thermocouple types:	J, K, T, E, R & S
Input Impedance:	10M ohms

1700 Series Type:	Input Range:	Resolution:	Accuracy:
Narrow Range	-7.2 to 7.8 mV	0.004 mV	+/- 0.014 mV @ 25°C
Wide Range	-4.6 to 55.4 mV	0.016 mV	+/- 0.055 mV @ 25°C

Thermocouple Ranges & Accuracy

Temperature Accuracy
Thermocouple	Type K	Type J	Type T	Type E	Type R	Type S
Temperature Measurement Range (°C)	-220 to 210	-130 to 160	-240 to 190	-110 to 140	-50 to 790	-50 to 850
	-100 to 1370	-50 to 900	-100 to 350	-50 to 740	-50 to 1760	-50 to 1700
Instrument Temperature Accuracy @mid range (°C)	0.36	0.28	0.40	0.24	1.4	1.5
	1.3	1.0	1.2	0.70	4.4	5.1
Resolution  @mid range (°C)	0.10	0.08	0.11	0.07	0.40	0.43
	0.37	0.29	0.34	0.20	1.3	1.5

Cold Junction Temperature Channel

Measurement range	-40°C to +85°C (-40°F to +185°F)
Accuracy	+/-0.25°C over +20°C to +30°C (+/-0.45°F over +68°F to +86°F) +/-0.35°C over -20°C to +70°C (+/-0.63°F over -4°F to +158°F)

Connection Diagram

Connecting thermocouple probes using an 1700-51N/51W logger:

To connect a typical two-wire probe, attach the red lead to one of the logger's two common (COM) input terminals. Attach the other probe lead to a channel input (CH1, CH2, CH3 or CH4)

 Memory

Data Sample Capacity	70,000 12-bit samples
Memory Modes	User-selectable: Wrap when memory full, or Stop when memory full.
Memory Protection	Data retention > 20 years backup without power.
Sampling Rates	User-selectable (in intervals of 10 seconds) from once every 10 seconds to once a day.
Recording Span	Recording span depends on sample interval selected and number of channels enabled. Below chart details typical sampling rates and length of time logger will retain data in memory before wrapping around or stopping (see Memory Modes).

Sample Interval	Recording Span
	Number of channels
	2	3	4	5
10 seconds	4.1 days	2.7 days	2.0 days	1.6 days
30 seconds	12.2 days	8.1 days	6.1 days	4.9 days
1 minute	24.3 days	16.2 days	12.1 days	9.7 days
5 minutes	4.1 months	2.7 months	2.0 months	1.6 months
15 minutes	1.0 year	8.1 months	6.1 months	4.9 months
1 hour	4.0 years	2.6 years	2.0 years	1.6 years

Note: Channel count is based on the number of thermocouple inputs enabled (or available) plus one channel for cold junction temperature (CJT).