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Precision Current Loop (4-20mA) & Voltage Datalogger
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Specifications for the Veriteq Spectrum 4000 line of precision current loop (4-20mA) and voltage dataloggers.
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 General
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| 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 to100% RH |
| Interfaces |
RS-232 serial port; half-duplex; 19,200 baud. Contact factory for optional USB interface products. |
| Mounting |
Magnetic strips; velcro optional |
| PC Software |
Compatible with the following software packages: Veriteq Spectrum, Veriteq sGo (for Palm OS), Veriteq viewLinc (for on-going monitoring & alarming), 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.
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Current loop & voltage inputs
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| Input Type |
Current Loop |
Analog Voltage |
| Available Range(s) |
0 to 22mA |
1, 5, 10 Vdc |
| Precision |
5.5 microamps |
0.025% F.S. |
| Accuracy |
0.15% F.S. at 25°C |
0.15% F.S. at 25°C |
| Input Impedances |
50 ohms |
>1 MOhm |
| Isolation |
One common per logger |
One common per logger |
| Overload Protection |
60mA max. (reverse-polarity protected) |
+/-30 volts max. (reverse-polarity protected) |
Memory
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| Memory Type |
Non-volatile 105K x 8 EEROM |
| 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. Chart below details typical sampling rates and length of time logger will retain data in memory before wrapping around or stopping (see Memory Modes). |
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| 1 |
2 |
3 |
4 |
5 |
| 10 seconds |
8.1
days |
4.1
days |
2.7
days |
2.0
days |
1.6
days |
| 30 seconds |
24.3
days |
12.2
days |
8.1
days |
6.1
days |
4.9
days |
| 1 minute |
1.6
months |
24.3
days |
16.2
days |
12.1
days |
9.7
days |
| 5 minutes |
8.1
months |
4.1
months |
2.7
months |
2.0
months |
1.6
months |
| 15 minutes |
2.0
years |
1.0
year |
8.1
months |
6.1
months |
4.9
months |
| 1 hour |
8.0
years |
4.0
years |
2.6
years |
2.0
years |
1.6
years |
Terminal Connections
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Each 4000 series data logger has six input terminals. Two of the terminals are labeled "COM" and refer to common connections. The function of the four other terminals (CH1, CH2, CH3, and CH4) differ, depending on the model, as described in the following table:
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Terminal Functions:
| Model Number |
Terminal Label |
| CH 1 |
CH 2 |
CH 3 |
CH 4 |
| 4000-1CW |
CX |
-- |
-- |
-- |
| 4000-101 |
-- |
VS |
-- |
-- |
| 4000-411 |
V |
VS |
V |
VS |
| 4000-4CW |
CX |
C |
CX |
C |
| 4000 |
CX |
VS |
CX |
VS |
Function Codes:
| Code |
Description |
| V |
0 to 10Vdc |
| VS |
0 to 10Vdc / 1Vdc (Software switchable) |
| CX |
4 to 20mA (with XPS switch) |
| C |
4 to 20mA |
| -- |
Not used |
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