Data Logger Technical Specifications
| Casing |
Polycabornate, watertight to IP68 Humidity loggers splash
proof from top |
| Size |
65 × 31 × 106 mm |
| Weight |
115 g |
| Ambient |
-40 + 85 °C |
| Battery |
1 × ½AA, 3.6V |
| T-TEC 6: Expected battery life: 3-4 years |
| T-TEC 7: Expected battery life: 2 years, Low battery warning
on display |
| Sensor (see sensor specifications) |
Temperature: Precision Thermistor or Pt100 |
| Humidity: capacitive precision |
| Memory |
E model: 12,000 to 25,000 sets of measurements |
| C model: 10,600 sets each sensor |
| F model: 10,600 sets each sensor (21,200 if only one) |
| A & P: 20,000 to 60,000 sets of measurements |
| Interface |
Special interface cable to serial port and/or special
interface cable to USB Port |
| Security ID |
Permanent serial number |
| Warranty |
1 Year (not incl. sensor) |
| Resolution |
Temperature: Better than 0.1 °C (see sensor specifications) |
| Humidity: Better than 0.1%RH |
Special Alarm functions
T-TEC 6: Audio alarms, T-TEC 7 visual alarms
When starting the logging, one or two alarms may be set as minimum
and/or maximum alarms. A period of grace may be set in minutes. Alarms
can be programmed to reset themselves once a day at a chosen time. Type
C loggers (For temperature and Humidity) have alarm functions for
temperature only.
Special Relay Output
Some types may be supplied with optional relay
output. Change-over relay, all three contacts available.
Contacts: Gold clad silver contacts. Nominal switching capacity
(Resistive load) 1A/30V DC, 0.5A 125V AC
| Casing |
Stainless Steel, Polypropylene seal |
| Size |
17.35mm diameter 5.9mm height |
| Weight |
3.2 g |
| Ambient |
-40 to 85 °C. Should not be exposed to temperatures in
excess of 70 °C for prolonged time. |
| Battery |
Built in: Non-replaceable |
Estimated life time: 5-7 years, depending on:
- ambient temperature
- number logs taken
- resolution (DS1922 and DS1923)
- Logging interval (DS1922 and DS1923)
|
| Sensor |
Built in, semiconductor |
| Memory |
DS1921: 2,048 logs
DS1922: 4096 or 8192 (depending on resolution)
DS1923: 2,048 or 4,096 (depending on resolution) |
| Interface |
|
| USB adaptor |
| Security ID |
Engraved unique serial number on case. This number also
embedded in internal electronics. |
| Resolution |
1921: ±0.5 °C |
| 1922: ±0.5 °C (low resolution) or ±0.0625 °C (high
resolution) |
|
1923: ±0.5 °C (low resolution) or ±0.0625 °C (high
resolution) |
| Accuracy |
±1 °C from -20 + 70 °C, at time of calibration at
factory. |
| Time Accuracy |
Maximum 8 minutes minutes per month over full
temperature range. |
Thermochron is a registered trademark of Maxim Integrated Products.
