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Logger Overview
Datasheet
(371 KB PDF File, 4 Pages)
Common questions
Thermocouple Resources & Links
Thermocouple Accuracy Graphs
Free Downloads
Spectrum
Software
Spectrum Excel Add-in
Veriteq sGo for Palm
OS handhelds
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Thermocouple
Datalogger - Specifications
Specifications for the Veriteq Spectrum 1700 line of precision thermocouple
datalogger recorders.
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
Spectrum, Veriteq
viewLinc (for on-going monitoring & alarming),
Veriteq sGo (for Palm OS), Spectrum
Excel Add-in, and Spectrum
API (for custom applications). |
| 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.
Datalogger Inputs
| |
|
|
| |
|
|
| Narrow Range |
1700-21N |
2 |
1 |
1 |
| 1700-51N |
5 |
1 |
4 |
| Wide
Range |
1700-21W |
2 |
1 |
1 |
| 1700-51W |
5 |
1 |
4 |
Note: One channel on each model provided for Cold Junction
Temperature (CJT) reference using on-board precision-tolerance thermistor.
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
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). |
| |
|
|
|
| 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).
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