Data Logger Technical Specifications
| Casing | Polycarbonate, 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 the 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 the 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
Thermochron™ data logger specifications
| 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 a prolonged time. |
| Battery | Built-in: Non-replaceable |
| Estimated lifetime: 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 the 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 per month over full temperature range. |
Thermochron is a registered trademark of Maxim Integrated Products.
Data Logger Technical Specifications
Sensor Specifications
Internal and Fixed External Thermistor Sensor Accuracy
| Range | Accuracy |
| -40 to 0 °C | ± 0.3 °C |
| 0 to 70 °C | ± 0.2 °C |
| 70 to 85 °C | ± 0.3 °C |
| 85 to 100 °C | ± 0.5 °C |
Fixed External Humidity Sensor Accuracy
10-90 % ± 2% RH, Compensated for -5 + 60 °C ambient temperature
Remote Thermistor Sensors’ Ranges and Resolutions
Two different external temperature sensors available
| Type | Ranges | Resolution | Accuracy | |
| T1 | – 40 to 85 °C | < 0.1 °C | As for built-in sensor | |
| T2 | -100 to 20 °C | < 0.1 °C | -90 to 20 °C ± 0.8 °C | |
| -100 to -90 °C ± 1.0 °C | ||||
Remote Pt100 Sensor
Four different temperature ranges available.
| Type | Ranges | Resolution | Accuracy |
| A | -200 + 120 °C | 0.2 °C | -200 – 100 °C ± 2.0 °C |
| -100 – 40 °C ± 1.0 °C | |||
| -40 + 120 °C ± 0.5 °C | |||
| B | -40 + 120 °C | 0.1 °C | -40 + 120 °C ± 0.3 °C |
| C | -40 + 280 °C | 0.2 °C | -40 + 100 °C ± 0.4 °C |
| +100 + 200 °C ± 0.6 °C | |||
| +200 + 280 °C ± 1.0 °C |
4-20 milli-Amperes input
Accuracy: ± 1% of range
Connection through supplied 2 meter cable with connector for logger.
Time Accuracy
Synchronisation up
to:
± 1 second; ± 1 minute per month.